31A-331 open-joist-triforce-spec-guide-usaF r i e n d ly Field Adjustability
Peace of mind underfoot™ www.openjoisttriforce.com
O PEN J OIST
SPECIFIERGUIDEUS EditionBuilt by
This brochure is intended to provide general information for designer and end-user.
For further information or assistance with our open joist TRIFORCE®, please contact
your Barrette Structural representative
In keeping with its on-going product development engagement, Barrette Structural
periodically revises its literature. Please visit our website www.openjoisttriforce.com
to verify that this is an updated version.
Date Revised: March 2014
www.openjoisttriforce.com
info@ojtriforce.com
Iwww.openjoisttriforce.com US Specifier Guide
Open Joist | Specifier Guide
Peace of mind underfoot™
II US Specifier Guide Open Joist TRIFORCE®
IIIwww.openjoisttriforce.com US Specifier Guide
An unusual building
The open joist TRIFORCE® is manufactured in a new facility built with glued laminated lumber posts and beams, designed in
function of the principles of sustainable development. Our plant with an area of 180 000 pi2, is the largest industrial building
using glued laminated lumber in eastern Canada.
Here are the principles of sustainable development that we have applied during this project:
• Support for the lumber industry and its workers.
• Third processing of a natural resource.
• Training of specialized workers, wood joist assemblers, whose expertise is already being used to advantage on other projects.
• Lumber derived from a certified forest that respects the principles
of sustainable forestry.
• Use of a local and renewable resource.
• Energy savings.
• Reduction in greenhouse gases (GHG).
• Solar walls.
• Insulating with aesthetics in mind.
• Protecting the water table.
IV US Specifier Guide Open Joist TRIFORCE®
Table of Contents
2 Evaluation Reports
3 Features and Benefits
3 Adjustment
4 Identification
5 Design Values
6 Stocking Lengths
7 L/480 Span Chart
8 L/360 Span Chart
9 L/480 Load Chart
10 L/360 Load Chart
11 Strongback Recommendation Chart
12 Installation
13 Storage & Handling
14 Typical Details
15 Rim Board Connection
16 Interior Bearing Wall Blocking
17 Parallel Non-Load Bearing Wall Support
18 Perpendicular Blocking
19 Cantilevers
20 Steel Beam Connections with Hangers
21 Steel Beam Connections without Hangers
22 Multiple Joist Connectors (MJC) For Concentrated Side Load
23 Reinforcement for Concentrated Side Load
24 Reinforcement for Concentrated Top Load
25 Allowable OSB Panel End Hole Penetrations
25 Mechanical Clearances
26 Strongbacks
27 TRIFORCE® Floor Performance
28 Fire Performance
29 1-Hour Fire Resistance Rated Floor Assembly
31 Sound Performance
32 QuickTools Software
33 Single Framing Connectors
35 Double Framing Connectors
37 Warranty
2www.openjoisttriforce.com US Specifier Guide
Canada CCMC-13474-R
United-States ESR-2999
MEA 300-00-E City of New-York #434B City of Houston
FL#5828 State of Florida
Evaluation Reports
3 US Specifier Guide Open Joist TRIFORCE®
Features and Benefits
FEATURES BENEFITS
SOLID SAWN KILN-DRIED CHORDS
• Wide nailing surface 2.5" and 3.5"
• Glued finger joints eliminate potential squeaking
• Dimensional stability
• Ease of installation
SOLID SAWN KILN-DRIED WEBS
• 2" X 2" webs
• Most effective wood usage
• Environmentally-friendly
WEB STOCK OSB END DETAIL
• 24" trimmable end
• Trimmable one end only
• Manufactured in 2-foot increments
GLUED FINGER JOINTS
TRIANGULATION
• Long-term performance
• Accuracy
• No plate corrosion
• No potential mechanical, electrical and plumbing damage due to metal connectors
• Eliminates potential squeaking
TRIANGULATED CONFIGURATION
• Proven
• Light handling
• No on-site thinking for holes to allow mechanical, electrical and plumbing installation
• Increased floor performance
QUALITY GUARANTEED
• Independent third-party inspection
• Individually tested to exceed load capacity
• Unrivaled floor performance
Adjustment
2x3"2X3"
OSB Panel
24"24" max
34 ⅛"
www.openjoisttriforce.com US Specifier Guide 4
Identification
14" OJ318
Grades: 14 = 1.4E
15 = 1.5E
18 = 1.8E
20 = 2,0E
Depths: 9 ½"
11 ⅞"
14"
16"
Flange: 2X3"
2X4"
The Barrette Structural open concept floor system
The strength of triangulation, accuracy of finger-jointed assembly, maximization of dimensional lumber and
environmentally-friendly field adjustability, makes open joist TRIFORCE® product the only trimmable all-wood,
open-webbed, finger-jointed, floor joists without metal plate connectors.
Reengineering wood components for your needs
For more than 25 years, OPEN JOIST 2000® products have demonstrated their strength and durability throughout North
America and Europe. The open joist TRIFORCE® product is the logical continuity of the OPEN JOIST 2000® products also
aiming for your “Peace of mind underfoot™”!
5 US Specifier Guide Open Joist TRIFORCE®
Design Values
OJ Series Reference Design Properties
Allowable Stress Design (ASD)
Series Depth Flange Width Ma Va EI K Joist Weight
Inches Inches (lbs-ft)(lbs)EI (x106lb/in²)(x 106 lbs)plf
OJ-314
9.5 2.5 2344 945 170 2,7 2.70
11.875 2.5 3035 1100 285 3,7 2.80
14 2.5 3635 1240 412 4,6 2.85
16 2.5 4131 1373 554 5,5 2.95
OJ-315
9.5 2.5 2836 945 182 2,7 2.70
11.875 2.5 3672 1100 305 3,7 2.80
14 2.5 4420 1240 442 4,6 2.85
16 2.5 5124 1373 594 5,5 2.95
OJ-318
9.5 2.5 3607 945 219 2,7 2.73
11.875 2.5 4670 1100 366 3,7 2.83
14 2.5 5621 1240 530 4,6 2.88
16 2.5 6516 1373 712 5,5 2.98
OJ-320
9.5 2.5 3738 945 243 2,7 2.73
11.875 2.5 4840 1100 407 3,7 2.83
14 2.5 5826 1240 589 4,6 2.88
16 2.5 6753 1373 791 5,5 2.98
OJ-414
9.5 3.5 3339 945 238 3,3 3.23
11.875 3.5 4324 1100 398 4,6 3.33
14 3.5 5178 1240 577 5,7 3.43
16 3.5 5884 1373 776 6,8 3.53
OJ-415 11.875 3.5 5231 1100 427 4,6 3.35
14 3.5 6296 1240 618 5,7 3.45
OJ-418
9.5 3.5 5138 945 306 3,3 3.25
11.875 3.5 6652 1100 512 4,6 3.35
14 3.5 8007 1240 742 5,7 3.45
16 3.5 9282 1373 997 6,8 3.55
OJ-420
9.5 3.5 5325 945 340 3,3 3.25
11.875 3.5 6894 1100 569 4,6 3.35
14 3.5 8298 1240 824 5,7 3.45
16 3.5 9620 1373 1 108 6,8 3.55
1) The tabulated design properties are reference design values for normal duration load. Reference allowable design moment and shear properties, Ma and Va must be corrected in accordance with applicable code adjustment factors2) Allowable moment capacity must not be increased by any repetitive member use factor.3) Maximum deflection at mid-span is calculated as follows for a uniformly loaded joist.
Deflection(∆) = +5wL4
384EI K
wL2 Where:L = Span
EI = Bending stiffnessK = Shear deflection factor
w = Uniform Load
6www.openjoisttriforce.com US Specifier Guide
Open Joist TriForce® Series Allowable Bearing Reactions
Series
Depth 2x3 Block End (lbs)OSB End (lbs)
(in)1 ½"3 ½"1 ½"1 ½" with web stiffeners 3 ½"
OJ-300 OJ-400
9.5 1 514 1 830 845 1 255 1 193
11.875 1 581 1 951 890 1 320 1 250
14 1 595 2 059 1 050 1 340 1 320
16 1 595 2 160 1 070 1 360 1 350
1) Unless Otherwise indicated, the tabulated reaction values are for normal duration of load and are permitted to be increased for other load durations in accordance with applicable code adjustment factors. These values are also limited by flange perpendicular to grain bearing stress of 425 psi.2) End reactions require a minimum bearing length of 1 ½" linear interpolation between bearing lengths is permitted.3) A length of up to 24 inches may be removed from the OSB end without modification of the tabulated allowable design properties.4) Web Stiffeners must be installed in accordance with guidelines presented in this guide.
Stocking Lengths
Available Stocking Lengths
Open joist TRIFORCE® offers new dimensions in height and length. The new open joist TRIFORCE® is offered in standard sizes of
the industry, 9 ½", 11 ⅞", 14" and 16". Open joist TRIFORCE® has a new material configuration system based on a 24" adjustable
OSB panel end. The simplified material configuration system offers a more efficient and economical product to our distributors
and loyal customers.
Depth Series Weight lbs/ft Stock Lengths (feet)
8 10 12 14 16 18 20 22 24 26 28 30
9 ½OJ314 2.70 ✖✖✖✖✖
OJ418 3.25 ✖
11 ⅞
OJ314 2.80 ✖✖✖✖✖
OJ315 2.80 ✖
OJ415 3.35 ✖
OJ418 3.35 ✖
14
OJ314 2.85 ✖✖✖✖✖
OJ315 2.85 ✖✖
OJ415 3.45 ✖
OJ418 3.45 ✖✖
16
OJ314 2.95 ✖✖✖✖✖
OJ315 2.95 ✖✖
OJ418 3.55 ✖✖✖
OJ420 3.55 ✖✖
2x3 Block End OSB End
7 US Specifier Guide Open Joist TRIFORCE®
L/480 Span Chart
Maximum Allowed Floor Spans for residential application
Nailed & Glued Subfloor - Improved Criteria L/480
9.5"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"11'-6"
14'-0"14'-0"14'-0"14'-0"13'-0"14'-0"14'-0"12'-11"-----
16'-0"16'-0"15'-7"14'-7"-----16'-0"14'-2"----------
18'-0"OJ418 2x4 18'-0"18'-0"17'-5"16'-2"18'-0"18'-0"17'-0"-----
11.875"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"13'-2"
16'-0"16'-0"16'-0"16'-0"14'-10"16'-0"16'-0"14'-8"-----
18'-0"OJ315 2x3 18'-0"18'-0"17'-9"16'-4"18'-0"17'-8"16'-2"-----
OJ418 (S)2x4 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"17'-10"
20'-0"OJ415 2x4 20'-0"20'-0"19'-9"18'-4"20'-0"20'-0"19'-3"-----
OJ418 (S)2x4 20'-0"20'-0"20'-0"19'-4"20'-0"20'-0"20'-0"-----
22'-0"OJ418 2x4 22'-0"22'-0"20'-9"-----22'-0"21'-7"20'-4"-----
14"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"
16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"14'-4"
18'-0"OJ315 2x3 18'-0"18'-0"18'-0"17'-11"18'-0"18'-0"17'-9"-----
20'-0"OJ315 2x3 20'-0"20'-0"20'-0"-----20'-0"19'-5"----------
OJ418 (S)2x4 20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"18'-11"
22'-0"OJ415 2x4 22'-0"22'-0"22'-0"20'-11"22'-0"22'-0"21'-2"-----
24'-0"OJ418 2x4 24'-0"24'-0"23'-7"-----24'-0"24'-0"23'-1"-----
26'-0"26'-0"25'-0"----------26'-0"24'-6"----------
16"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"
16'-0"OJ314 2x3 16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"15'-4"
OJ318 (S)2x3 16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"
18'-0"OJ315 2x3 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"17'-1"
OJ318 (S)2x3 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"
20'-0"OJ315 2x3 20'-0"20'-0"20'-0"19'-3"20'-0"20'-0"19'-1"-----
OJ418 (S)2x4 20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"19'-2"
22'-0"
OJ418 2x4
22'-0"22'-0"22'-0"22'-0"22'-0"22'-0"22'-0"-----
24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"-----
26'-0"26'-0"26'-0"26'-0"24'-2"26'-0"26'-0"24'-1"-----
28'-0"OJ420 2x4 28'-0"28'-0"26'-10"-----28'-0"27'-11"----------
30'-0"30'-0"28'-6"----------30'-0"---------------
Notes :1) Spans apply to simple span application only.2) Minimum end bearing length is 1½", except for bold spans minimum 1½" at the OSB section with web stiffeners. 3) Maximum spans are measured centerline to centerline of bearing and are based on uniformly loaded joists.4) Dead load deflection is limited to L/240 and Total load deflection is limited to L/240.5) Live Load is limited to L/480.6) The spans shown consider a minimum 5/8" thick rated sheathing nailed and glued to joist in accordance with the applicable code or a 3/4" at 24" o.c.7) Allowable spans take into consideration the composite effect from glued and nailed subfloor for deflections.8) Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.9) The nailing specifications are to be in accordance with in force building code and the adhesives used should comply with APA Specification AFG-01 or ASTM D3498.10) (S) = Special grade, verify availability.
∆L≤ L/480
8www.openjoisttriforce.com US Specifier Guide
L/360 Span Chart
Maximum Allowed Floor Spans for residential application
Nailed & Glued Subfloor - Improved Criteria L/360
9.5"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"11'-6"
14'-0"14'-0"14'-0"14'-0"13'-0"14'-0"14'-0"12'-11"-----
16'-0"16'-0"15'-11"14'-7"-----16'-0"14'-2"----------
18'-0"OJ418 2x4 18'-0"18'-0"18'-0"17'-9"18'-0"18'-0"17'-0"-----
11.875"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"13'-2"
16'-0"16'-0"16'-0"16'-0"14'-10"16'-0"16'-0"14'-8"-----
18'-0"OJ315 2x3 18'-0"18'-0"18'-0"16'-4"18'-0"17'-8"16'-2"-----
OJ418 (S)2x4 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"17'-10"
20'-0"OJ415 2x4 20'-0"20'-0"20'-0"19'-6"20'-0"20'-0"19'-3"-----
OJ418 (S)2x4 20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"-----
22'-0"OJ418 2x4 22'-0"22'-0"22'-0"21'-2"22'-0"21'-7"20'-4"-----
14"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"
16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"14'-4"
18'-0"OJ315 2x3 18'-0"18'-0"18'-0"17'-11"18'-0"18'-0"17'-9"-----
20'-0"OJ315 2x3 20'-0"20'-0"20'-0"-----20'-0"19'-5"----------
OJ418 (S)2x4 20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"18'-11"
22'-0"OJ415 2x4 22'-0"22'-0"22'-0"21'-4"22'-0"22'-0"21'-2"-----
24'-0"OJ418 2x4 24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"23'-1"-----
26'-0"26'-0"26'-0"25'-9"24'-1"26'-0"24'-6"----------
16"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Floor span c/c Maximum Floor span c/c
8'-0"
OJ314 2x3
8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"8'-0"
10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"10'-0"
12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"12'-0"
14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"14'-0"
16'-0"OJ314 2x3 16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"15'-4"
OJ318 (S)2x3 16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"16'-0"
18'-0"OJ315 2x3 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"17'-1"
OJ318 (S)2x3 18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"18'-0"
20'-0"OJ315 2x3 20'-0"20'-0"20'-0"19'-3"20'-0"20'-0"19'-1"-----
OJ418 (S)2x4 20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"20'-0"19'-2"
22'-0"
OJ418 2x4
22'-0"22'-0"22'-0"22'-0"22'-0"22'-0"22'-0"-----
24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"24'-0"-----
26'-0"26'-0"26'-0"26'-0"24'-2"26'-0"26'-0"24'-1"-----
28'-0"OJ420 2x4 28'-0"28'-0"28'-0"-----28'-0"27'-11"----------
30'-0"30'-0"30'-0"29'-4"-----30'-0"---------------
Notes :1) Spans apply to simple span application only.2) Minimum end bearing length is 1½", except for bold spans minimum 1½" at the OSB section with web stiffeners.3) Maximum spans are measured centerline to centerline of bearing and are based on uniformly loaded joists.4) Dead load deflection is limited to L/240 and Total load deflection is limited to L/240.5) Live Load is limited to L/360.6) The spans shown consider a minimum 5/8" thick rated sheathing nailed and glued to joist in accordance with the applicable code or a 3/4" at 24" o.c.7) Allowable spans take into consideration the composite effect from glued and nailed subfloor for deflections.8) Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.9) The nailing specifications are to be in accordance with in force building code and the adhesives used should comply with APA Specification AFG-01 or ASTM D3498.10) (S) = Special grade, verify availability.
∆L≤ L/360
9 US Specifier Guide Open Joist TRIFORCE®
L/480 Load Chart
Maximum Allowed Live Load Chart for residential application
Glued & Nailed Subfloor with Continuous Strongbacks at Mid Span
9.5"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
282 211 174 136 272 196 158 121
10'-0"167 128 105 81 162 114 90 66
12'-0"106 81 68 51 102 69 53 -----
14'-0"70 54 45 -----67 43 ----------
16'-0"49 ---------------44 ---------------
18'-0"OJ418 2x4 57 44 ----------57 43 ----------
11.875"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
314 232 191 149 299 217 176 134
10'-0"233 171 140 109 218 156 125 94
12'-0"157 114 92 71 142 99 77 56
14'-0"111 79 63 48 96 64 48 -----
16'-0"79 57 45 -----66 42 ----------
18'-0"OJ315 2x3 60 46 ----------60 ---------------
OJ418 (S)2x4 92 71 60 49 92 71 58 -----
20'-0"OJ415 2x4 60 46 ----------60 46 ----------
OJ418 (S)2x4 69 53 45 -----69 53 45 -----
22'-0"OJ418 2x4 53 41 ----------53 ---------------
14"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
319 236 194 152 304 221 179 137
10'-0"252 185 152 118 237 170 137 104
12'-0"191 139 113 88 176 124 98 73
14'-0"136 98 79 60 121 83 64 45
16'-0"100 71 57 42 85 56 42 -----
18'-0"OJ315 2x3 84 65 54 -----80 53 ----------
20'-0"OJ315 2x3 63 49 40 -----59 ---------------
OJ418 (S)2x4 98 75 63 98 70 58 -----
22'-0"OJ415 2x4 65 50 42 -----65 48 ----------
24'-0"OJ418 2x4 59 45 ----------59 45 ----------
26'-0"47 ---------------47 ---------------
16"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
324 239 197 154 309 224 182 139
10'-0"256 188 154 120 241 173 139 105
12'-0"211 154 126 98 196 139 111 83
14'-0"156 113 92 70 141 98 77 55
16'-0"OJ314 2x3 116 83 66 50 101 68 51 -----
OJ318 (S)2x3 154 112 90 69 139 97 76 54
18'-0"OJ315 2x3 111 81 65 49 98 66 50 -----
OJ318 (S)2x3 127 99 79 60 121 83 64 45
20'-0"OJ315 2x3 83 62 49 -----73 47 ----------
OJ418 (S)2x4 120 86 69 52 105 71 54 -----
22'-0"
OJ418 2x4
99 76 62 46 93 62 47 -----
24'-0"78 60 50 41 78 54 40 -----
26'-0"62 48 40 -----62 48 ----------
28'-0"OJ420 2x4 55 42 ----------55 ---------------
30'-0"46 ---------------46 ---------------
Notes :1) Uniform loads shown are for Full span (bearing included), higher loads could be applied using longer end bearing length.2) Minimum end bearing length is 1½", except for bold loads, minimum 1½" with web stiffeners at the OSB section.3) Dead load deflection is limited to L/240 and Total load deflection is limited to L/240.4) Live load deflection is limited to L/480.5) Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.6) The nailing specifications are to be in accordance with in force building code and the adhesives used should comply with APA Specification AFG-01 or ASTM D3498.7) (S) = Special grade, verify availability.
∆L≤ L/480
10www.openjoisttriforce.com US Specifier Guide
L/360 Load Chart
Maximum Allowed Live Load Chart for residential application
Glued & Nailed Subfloor with Continuous Strongbacks at Mid Span
9.5"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
287 211 174 136 272 196 158 121
10'-0"177 129 105 81 162 114 90 66
12'-0"117 84 68 51 102 69 53 -----
14'-0"82 58 45 -----67 43 ----------
16'-0"59 40 ----------44 ---------------
18'-0"OJ418 2x4 76 59 50 -----70 43 ----------
11.875"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
314 232 191 149 299 217 176 134
10'-0"233 171 140 109 218 156 125 94
12'-0"157 114 92 71 142 99 77 56
14'-0"111 79 63 48 96 64 48 -----
16'-0"81 57 45 -----66 42 ----------
18'-0"OJ315 2x3 76 53 42 -----61 ---------------
OJ418 (S)2x4 123 91 73 55 111 76 58 40
20'-0"OJ415 2x4 81 62 51 -----75 48 ----------
OJ418 (S)2x4 93 72 61 47 92 62 45 -----
22'-0"OJ418 2x4 71 54 46 -----62 ---------------
14"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
319 236 194 152 304 221 179 137
10'-0"252 185 152 118 237 170 137 104
12'-0"191 139 113 88 176 124 98 73
14'-0"136 98 79 60 121 83 64 45
16'-0"100 71 57 42 85 56 42 -----
18'-0"OJ315 2x3 95 68 54 40 80 53 ----------
20'-0"OJ315 2x3 74 52 40 -----59 ---------------
OJ418 (S)2x4 119 85 68 52 104 70 53 -----
22'-0"OJ415 2x4 80 63 50 -----65 48 ----------
24'-0"OJ418 2x4 79 61 51 -----74 46 ----------
26'-0"63 48 ----------50 ---------------
16"Dead loads: 15 psf Dead loads: 30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Maximum Live Load (psf)Maximum Live Load (psf)
8'-0"
OJ314 2x3
324 239 197 154 309 224 182 139
10'-0"256 188 154 120 241 173 139 105
12'-0"211 154 126 98 196 139 111 83
14'-0"156 113 92 70 141 98 77 55
16'-0"OJ314 2x3 116 83 66 50 101 68 51 -----
OJ318 (S)2x3 154 112 90 69 139 97 76 54
18'-0"OJ315 2x3 113 81 65 49 98 66 50 -----
OJ318 (S)2x3 136 98 79 60 121 83 64 45
20'-0"OJ315 2x3 88 62 49 -----73 47 ----------
OJ418 (S)2x4 120 86 69 52 105 71 54 -----
22'-0"
OJ418 2x4
108 77 62 46 93 62 47 -----
24'-0"98 69 55 41 83 54 40 -----
26'-0"83 63 50 -----74 48 ----------
28'-0"OJ420 2x4 74 57 45 -----66 40 ----------
30'-0"61 47 ----------47 ---------------
Notes :
1) Uniform loads shown are for Full span (bearing included), higher loads could be applied using longer end bearing length.
2) Minimum end bearing length is 1½", except for bold loads, minimum 1½" with web stiffeners at the OSB section.
3) Dead load deflection is limited to L/240 and Total load deflection is limited to L/240.
4) Live load deflection is limited to L/360.
5) Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.
6) The nailing specifications are to be in accordance with in force building code and the adhesives used should comply with APA Specification AFG-01 or ASTM D3498.
7) (S) = Special grade, verify availability.
∆L≤ L/360
11 US Specifier Guide Open Joist TRIFORCE®
Strongback Recommendation Chart
Mid Span Continuous Strongbacks Recommendation For Maximum Span Charts
9.5"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Strongbacks Strongbacks
8'-0"
OJ314 2x3
None None None None None None None None
10'-0"None None None None None None None None
12'-0"None None None None None None None None
14'-0"None None 1-2x4 None None None None -----
16'-0"1-2x4 2-2x4 1-2x4 -----1-2x4 1-2x4 ----------
18'-0"OJ418 2x4 2-2x4 1-2x6 2-2x6 2-2x6 2-2x4 1-2x6 1-2x6 -----
11.875"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Strongbacks Strongbacks
8'-0"
OJ314 2x3
None None None None None None None None
10'-0"None None None None None None None None
12'-0"None None None None None None None None
14'-0"None None None None None None None None
16'-0"None 1-2x4 1-2x4 None None None 1-2x4 -----
18'-0"OJ315 2x3 1-2x4 1-2x6 1-2x6 1-2x6 1-2x4 2-2x4 1-2x6 -----
OJ418 (S)2x4 None 1-2x4 1-2x4 2-2x4 None 1-2x4 1-2x4 2-2x4
20'-0"OJ415 2x4 2-2x4 1-2x6 2-2x6 1-2x8 2-2x4 1-2x6 1-2x6 -----
OJ418 (S)2x4 1-2x4 1-2x6 2-2x6 2-2x6 1-2x6 1-2x6 1-2x6 -----
22'-0"OJ418 2x4 1-2x6 2-2x6 1-2x8 2-2x8 1-2x6 2-2x6 2-2x6 -----
14"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Strongbacks Strongbacks
8'-0"
OJ314 2x3
None None None None None None None None
10'-0"None None None None None None None None
12'-0"None None None None None None None None
14'-0"None None None None None None None None
16'-0"None None None None None None None None
18'-0"OJ315 2x3 None 1-2x6 1-2x6 1-2x6 None 1-2x6 1-2x6 -----
20'-0"OJ315 2x3 1-2x6 1-2x6 1-2x6 -----1-2x6 1-2x6 ----------
OJ418 (S)2x4 None 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6
22'-0"OJ415 2x4 1-2x6 1-2x6 2-2x6 2-2x6 1-2x6 1-2x6 2-2x6 -----
24'-0"OJ418 2x4 1-2x6 2-2x6 2-2x8 2-2x8 1-2x6 2-2x6 2-2x6 -----
26'-0"2-2x6 2-2x8 2-2x10 2-2x8 2-2x6 1-2x8 ----------
16"LL=40 psf DL=15 psf LL=40 psf DL=30 psf
Spacing o.c.12"16"19.2"24"12"16"19.2"24"
Subfloor thickness - CSP 5/8"5/8"5/8"3/4"5/8"5/8"5/8"3/4"
Length Series Strongbacks Strongbacks
8'-0"
OJ314 2x3
None None None None None None None None
10'-0"None None None None None None None None
12'-0"None None None None None None None None
14'-0"None None None None None None None None
16'-0"OJ314 2x3 None None None None None None None None
OJ318 (S)2x3 None None None None None None None None
18'-0"OJ315 2x3 None None 1-2x6 1-2x6 None None 1-2x6 1-2x6
OJ318 (S)2x3 None None None None None None 1-2x6 1-2x6
20'-0"OJ315 2x3 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 -----
OJ418 (S)2x4 None None 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6
22'-0"
OJ418 2x4
None 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 1-2x6 -----
24'-0"1-2x6 1-2x6 2-2x6 2-2x6 1-2x6 1-2x6 2-2x6 -----
26'-0"1-2x6 2-2x6 1-2x8 1-2x8 1-2x6 2-2x6 2-2x6 -----
28'-0"OJ420 2x4 2-2x6 2-2x8 2-2x8 -----2-2x6 2-2x8 ----------
30'-0"2-2x8 2-2x10 2-2x10 -----2-2x8 ---------------
Notes :
1) Specified continuous strongbacks installed at mid span shown, take into consideration a performance criterion.
2) Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.
3) Live load deflection is limited to L/360.
4) This table of continuous strongback for maximum spans can also be used for Maximum spans when live load deflection is limited to L/480.
www.openjoisttriforce.com US Specifier Guide 12
1. Except for cutting length, TRIFORCE®
flanges should never be cut, drilled
or notched.
2. Install TRIFORCE® joists so that top
and bottom flanges are within ½” of
true vertical alignment.
3. At the ends, joists must be restrained
to prevent rollover. Use rim board or
blocking panels.
4. For Cantilevered TRIFORCE® joists,
brace top and bottom flanges, and
brace ends with closure panels,
rim board.
5. Apply concentrated loads only on the
top flange. Concentrated loads shall
not be suspended from the bottom
flange with the exception of light
loads, such as ceiling fans or light
fixtures.
6. TRIFORCE® must be protected
from weather prior to installation.
7. Joists are to be used in dry
conditions only.
8. Never install a damaged
TRIFORCE® joist.
9. When strongbacks are installed, the
strongbacks must be of dry lumber.
10. When a joist interferes with a
plumbing pipe, the joist may be
moved up to 3” to allow piping.
OSB Panel End openings are allowed
per the Allowable Hole through the
OSB Panel End chart (see page 25).
When moving a joist, check subfloor
thickness with code requirements
when joist spacing exceeds 19.2” o.c.
11. End bearing length
must be at least 1 ½”.
12. To transfer loads from above, rim
boards, squash blocks or blocking
panels shall be used at exterior walls
and interior bearing walls.
13. Joists shall not be in direct contact
with masonry or concrete.
14. Install all bracing and sheathing to
each TRIFORCE® joist before applying
any construction loads on the floor
system. Stack building material
over beams or bearing walls only,
otherwise additional shoring material
may be needed.
15. Nails installed perpendicular to the
wide face of the flange shall be
spaced not closer than 2 ½ inches
o.c. for 8d common nails.
16. Details on the following pages show
only TRIFORCE® specific fastener
requirements. For other fastener
requirements, see applicable
building code.
17. The adhesives used for floor systems
should comply to ASTM D3498-03
Standard Specification for Standard
Specification for Adhesives for
Field-Gluing Plywood to Lumber
Framing for Floor Systems. Follow
manufacturer guidelines for
field-glued floors.
Installation
Not Permitted
Joist flanges
shall not be notched,
cut or drilled
to allow piping
All information in this document is general and is given as general information to an informed tradesman, that must have
all the proper qualifications and knowledge for installing floor joists properly as per manufacturers specifications and as per
local code.
The warranty shall not extend to products misused, neglected, subjected to abnormal storage, use or exposure or which
have been altered in any manner or not maintained in accordance with published instructions. The products must be
handled and installed in accordance with the manufacturer's published instructions.
Not Permitted
13 US Specifier Guide Open Joist TRIFORCE®
Storage & Handling
Storage Notes:
1. Keep TRIFORCE® bundles wrapped to
protect from weather
2. Use wood stickers to separate
bundles under each automatically
inserted stickers.
3. Always store, stack and handle
TRIFORCE® vertically and level –
never flat/ horizontal.
4. Do not store TRIFORCE® in direct
contact with the ground.
5. Store longest material lowest
to the ground.
6. For optimal moisture protection, keep
TRIFORCE® at least 6 inches up off
the ground.
7. To protect from dirt and weather,
delay unwrapping the TRIFORCE®
bundles until the time of installation
and delivery.
8. Take care to avoid forklift damage.
If the ground is unlevel in the storage
area, reduce forklift speed to avoid
"bouncing" the load.
9. When handling with a crane, pick up
the load using a spreader if necessary
to minimize handling stresses. Keep
TRIFORCE® vertical.
10. Maintain stack height within
safe limits.
11. Do not lift TRIFORCE® joist by
top flange.
12. Do not stack other material on top of
TRIFORCE® bundles.
13. Bundle wrap can be slippery,
especially when wet. Avoid walking
on material.
JOIST SPACING BELOW PLUMBING WALL
PARALLEL TO WALL
JOIST SPACING BELOW PLUMBING WALL
PERPENDICULAR TO WALL
Every third Joist may be shifted up to 3" to avoid plumbing penetration interference
Every third Joist may be shifted up to 3" to avoid plumbing penetration interference
Additional joists may be required (See Layout)Additional joists may be required (See Layout)
Joist Spacing
Joist Chord Width 2x4 Wall 2x6 Wall
2X3 Chord 6"8"
2X4 Chord 7"9"
Chart Dimension24" Max.3" Max.3" Max.
www.openjoisttriforce.com US Specifier Guide 14
Typical Details
Detail N12P
Cantilevered Balcony
Page 19 Detail N13
Solid Lumber
Cantilever
Perpendicular
To Open Joist
Page 19
Detail N3P1B
End To End Joist
Page 16
Detail N2
Rim To JoistPage 15
Detail N10V11P
Reinforcement
Under
Concentrated
Load
Page 23
Detail N8PB
Reinforcement For Cantilevered JoistPage 19
Detail N17
Mechanical
Clearances
Page 25
Detail N5
Strongback
Page 26
Detail N15EP
Steel Beam
With Solid
Wood Filler
Hanger required
Page 20
Detail 11VS
Reinforcement
for Concentrated
Top Load
Page 24
15 US Specifier Guide Open Joist TRIFORCE®
Rim Board Connection
Standard Sizes For Performance Rated Rim Boards
Standard Sizes
Thickness (inches) 1 ⅛
Depth (inches) 9 ½, 11 ⅞, 14, 16
Length (feet) 8 to 16
Design Capacities For Performance Rated Rim Board
Rim Board Grade Performance Category
H (lbf/ft)V (lbf/ft)Z (lbf)P (lbf)
Depth Limitation (in.)
d≤24 d≤16 16<d≤24 d≤24 16<d≤24
Rim Board (C1)1-1/8 or higher 180 4,400 3,000 350 3,500
Rim Board Plus (B2)1-1/8 or higher 200 4,850 3,200 350 3,500
• These design values are applicable only to Rim Board applications in compliance with the connection requirements given in this document and shall not be used in the design of a bending member, such as joist, header, rafter, or ledger. All design values are applicable to the normal load duration. Design values may be adjusted for other load durations in accordance with the applicable code except that the bearing (vertical) load capacity (V) and concentrated vertical load capacity (P) are not permitted to be increased for any load durations shorter than the normal load duration. Toe-nailed connections are not limited by the 150 Ibf/ft lateral load capacity noted for Seismic Design Categories D, E and F in Section 2305.1.4 of the IBC.
• The performance categories for these rim boards refers to the minimum thickness of the rim board.
• H = The horizontal (shear) load transfer capacity.
• V = The bearing (vertical) load capacity, which shall not be adjusted for load durations in accordance with the applicable code.
• Z = The lateral resistance of a ½-inch-diameter log screw.
• P = The concentrated vertical load capacity based on 4-½·inch bearing length.
A Structural Rim Board is
recommended when the open
joist TRIFORCE® Floor Joists
are installed perpendicular
or parallel on exterior
bearing walls.
It is not recommended to use
open joist TRIFORCE® Floor
Joists as solo starter joists on
exterior bearing walls.
Toe-Nail Connection At Rim BoardRim to Joist
Attach Rim Board to End of Open Joist With (1) 8d Nail at Each Flange and (1) 8d Nail Centered at End Block
Attach Rim Board to End of Open Joist With (1) 8d Nail at Each Flange
Rim Board
Top or sole plate/3
30˚
16www.openjoisttriforce.com US Specifier Guide
Blocking
OFFSET BEARING WALL
Foundation,bearing wallor beam
1 ½" ma
x
.
Verify in QuickTools
Analyzer Assistant if the plywood reinforcement for concentrated top
load is required
Blocking
OFFSET BEARING WALL
Foundation,bearing wallor beam
1 ½" m
a
x
.
Verify in QuickTools
Analyzer Assistant if the plywood reinforcement for concentrated top
load is required
END-TO-END JOIST
Blocking
Foundation,bearing wallor beam
Interior Bearing Wall Blocking
END-TO-END JOIST
Foundation,bearing wallor beam
Blocking
Detail N3EP1M Detail N3EP2M
Detail N3P1B Detail N3P2B
17 US Specifier Guide Open Joist TRIFORCE®
When Non Load Bearing Walls above
are installed parallel to the open joist
TRIFORCE® below, two methods
are recommended.
1. Add a supporting Joist under the
Wall above.
2. Add 2x support or ladder bracing
every 2' on center with Simpson Z28
clips as shown below or equivalent.
Model No.Ga Dimensions Fasteners1 (Total)
Allowable2 Download (125)W H B TF
Z2 20 2 5/16 1 ½1 ⅜1 ⅜4-10dx1 ½465
Z4 12 1 ½3 ½2 ⅛1 ¾2-16d 465
Z28 28 2 5/16 1 ½1 ⅜1 ⅜10dx1 ½1 —
Z38 28 2 5/16 2 ½1 ⅜1 ⅜10dx1 ½1 —
Z44 12 2 ½3 ½2 1 ⅜4-16d 865
Parallel Non-Load Bearing Wall Support
Z4(Others similar)
1) Z28 and Z38 do not have nail holes. Fastener quantity and type shall be per Designer.2) Allowable loads have been increased 25% for roof loading (Z clips), no further increase allowed, reduce where other loads govern.3) Z4 loads apply with a nail into the top and a nail into the seat.4) NAILS: 16d = 0,162" dia. x 3 ½" long, 10dx1 ½ = 0,148" dia. x 1 ½" long. See other nail sizes and information
18www.openjoisttriforce.com US Specifier Guide
Perpendicular Blocking
Perpendicular I-Joist
Blocking:
I-Joist perpendicular blocking or
equivalent @ 24" on center. Attaching
the Wood-I or I-Joist blocking with (2)
3 ½" (16d) nails to the top and bottom
chords of the open joist TRIFORCE®
and (1) 2 ½" (8d) nails through the Rim
Board into the top and bottom chord
of the I-Joist blocking. Secure the
I-Joist blocking to the sole plate with
(1) 3 ½" (10d) nails each side of the
bottom chord.
2 ½" (8d)
3 ½" (10d)
2 ½" (8d)
PERPENDICULAR
BLOCKING AT EXTERIOR WALL
See detail N2P
APA RimboardJoist blocking required as per local building code for lateral wall bracing (max 32" c/c)
Fixed 2-2x4 with nails (0.122" x 3") 2 at top, 2 at bottom, hanger L50 or equivalent.
Joist
S
p
a
c
i
n
g
Detail N6R1B
19 US Specifier Guide Open Joist TRIFORCE®
Cantilevers
Open joist TRIFORCE® Cantilevers can
be applied to accommodate Balconies,
Brick Ledge or Water Ledge or 2nd Story
Wall support. Verification of loading
will determine what type if any
reinforcement may be required. Please
consult your open joist TRIFORCE®
Representative for any questions
concerning cantilever situations.
Bearing wallor beam
Solid lumber fixed
Wood piece
Filling 5/8"on OSB panelL
2L
CANTILEVERED BALCONY
RimboardOSB 1 1/8"
Bearing wall
Additional bracing frombearing wall at cantileverto center of the joist1x3 at 16" o.c. or1x4 at 24" o.c. or2x4 at 48" o.c.
Blocking
REINFORCEMENT FOR CANTILEVERED JOIST
Blocking
4" min.
MULTIPLE LEVEL
BRICK AT LOWER LEVEL
Bearing wallor beam 1/8"1-2x6 post on each side of the joist, 1/8" less than the space between the frames.
Wood piece for leveling
Solid lumber
Bearing wallor beamSupport fixed to joist
SOLID LUMBER
CANTILEVER PERPENDICULAR
TO OPEN JOIST
Bearing wallor beam
Squash block(2"x6")1/16" higherthan the joist
RimboardOSB 1 1/8"MULTIPLE LEVEL
BRICK AT LOWER LEVEL
Detail N12P Detail N8PB
Detail N2BPDetail N2B Detail 13
20www.openjoisttriforce.com US Specifier Guide
Steel Beam Connections with Hangers
Wood fillerfixed to beam
Steelbeam
* top mount or face mount hangers
STEEL BEAM
WITH SOLID
WOOD FILLER
HANGER REQUIRED
Hanger *
Steel beam
Wood fillerfixed to beam
STEEL BEAM
WITH SOLID WOOD FILLER
HANGER REQUIRED
Hanger *
* top mount or face mount hangers
Detail N15P1 Detail N15EP
21 US Specifier Guide Open Joist TRIFORCE®
Steel Beam Connections without Hangers
Wood fillerfixed to beam
Steel beam
STEEL BEAM
BOTTOM FLANGE BEARING
HANGER NOT REQUIRED
Blocking not shown for clarity
Wood fillerfixed to beam
Steel beam
STEEL BEAM BOTTOM FLANGE
BEARINGHANGER
NOT REQUIRED
1/4" max.
Blocking not shown for clarity
Detail 14T Detail N14P
22www.openjoisttriforce.com US Specifier Guide
Multiple Joist Connectors (MJC)
For Concentrated Side Load
Load sharing clip center on point load, fixed to joist with 1 1/2" nails (10d).
DOUBLE JOIST LOAD TRANSFER
Load sharing clips on each side of the point load, fixed to joist with 1 1/2" nails (10d).
DOUBLE JOIST LOAD TRANSFER
8"
8"
Load sharing clips on each side of the point load, fixed to joist with 1 1/2" nails (10d).
DOUBLE JOIST LOAD TRANSFER
8"
8"
Load sharing clips on each side of the point load, fixed to joist with 1 1/2" nails (10d).
DOUBLE JOIST LOAD TRANSFER
8"
4"
4"
8"
Detail MJC2 Detail MJC4
Detail MJC6 Detail MJC8
23 US Specifier Guide Open Joist TRIFORCE®
Reinforcement for Concentrated Side Load
Filler 24" of length, center on, 1/2" Plywood or OSB, to the diagonals or OSB panel with adhesives and 2" nails at 3" o.c.
-for 2x3 Joist:1 ply if fixed to the diagonalsor 2 plies if fixed to OSB end panel,-for 2x4 Joist:2 plies if fixed to the diagonalsor 3 plies if fixed to si OSB end panel,
Reinforcement fixed to filler with adhesives, and fixed to the top and bottomchord with adhesives and 3" nails at 2 1/2" o.c.
ONE SIDE REINFORCEMENTSINGLE JOIST
Header
Filler 24" of length, center on, 1/2" Plywood or OSB, to the diagonals or OSB panel with adhesives and 2" nails at 3" o.c.
-for 2x3 Joist:1 ply if fixed to the diagonalsor 2 plies if fixed to OSB end panel,-for 2x4 Joist:2 plies if fixed to the diagonalsor 3 plies if fixed to si OSB end panel,
Reinforcement fixed to filler with adhesives, and fixed to the top and bottomchord with adhesivesand 3" nails at 5" o.c.
TWO SIDES REINFORCEMENTSINGLE JOIST
Header
Filler 24" of length, center on, 1/2" Plywood or OSB, to the diagonals or OSB panel with adhesives and 2" nails at 3" o.c.
-for 2x3 Joist:1 ply if fixed to the diagonalsor 2 plies if fixed to OSB end panel,-for 2x4 Joist:2 plies if fixed to the diagonalsor 3 plies if fixed to si OSB end panel,
Reinforcement fixed to filler with adhesives, and fixed to the top and bottomchord with adhesivesand 3" nails at 2 1/2" o.c.
ONE SIDE REINFORCEMENTDOUBLE JOISTS
Header
Filler 24" of length, center on, 1/2" Plywood or OSB, to the diagonals or OSB panel with adhesives and 2" nails at 3" o.c.
-for 2x3 Joist:1 ply if fixed to the diagonalsor 2 plies if fixed to OSB end panel,-for 2x4 Joist:2 plies if fixed to the diagonalsor 3 plies if fixed to si OSB end panel,
Reinforcement fixed to filler with adhesives, and fixed to the top and bottomchord with adhesivesand 3" nails at 2 1/2" o.c.
TWO SIDES REINFORCEMENTDOUBLE JOISTS
Header
Detail N10V11P Detail N10V12P
Detail N10V21P Detail N10V22P
24www.openjoisttriforce.com US Specifier Guide
Reinforcement for Concentrated Top Load
Reinforcement fixed to each side of the top and bottom chord with adhesives and 3" nails at 5" o.c.
Web stiffener on both sides
Web stiffener under concentrated load, 2X4 fixed to each side to reinforcement with adhesives and 4 X 2-1/2" nails.
Reinforcement fixed to each side of the top and bottom chord with adhesives and 3" nails at 5" o.c.
Reinforcement fixed to each side of the top and bottom chord with adhesives and 3" nails at 5" o.c.
Detail N11VS4 Detail N11V
Detail N11VS
25 US Specifier Guide Open Joist TRIFORCE®
Allowable OSB Panel End Hole Penetrations
Holes sizes and locations - Simple span
Joist Depth Joist Series
Round hole diameter only (in)
Minimum distance from inside face of support to beginning of hole (ft-in)
2"3"4"5"6"7"8"9"10"11"12"Max Span
9.5"OJ314 0' 5"0' 5"0' 5"1' 6"16' 0"
OJ418 0' 5"0' 6"2' 0"20' 0"
11.875"
OJ314 0' 6"0' 6"0' 6"0' 6"0' 6"1' 2"16' 0"
OJ315 0' 6"0' 6"0' 6"0' 6"1' 0"2' 0"18' 0"
OJ415 0' 6"0' 6"0' 6"1' 0"2' 0"20' 0"
OJ418 0' 6"0' 6"1' 0"2' 0"22' 0"
14"
OJ314 0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 9"1' 10"16' 0"
OJ315 0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"1' 6"20' 0"
OJ415 0' 6"0' 6"0' 6"0' 6"0' 6"1' 6"2' 0"22' 0"
OJ418 0' 6"0' 6"0' 9"1' 6"2' 2"26' 0"
16"
OJ314 0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 9"1' 6"16' 0"
OJ315 0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"1' 0"1' 8"20' 0"
OJ318 0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"0' 6"1' 0"1' 8"18' 0"
OJ418 0' 6"0' 6"0' 6"0' 6"0' 6"1' 0"2' 0"26' 0"
OJ420 0' 6"0' 6"0' 9"1' 6"2' 0"30' 0"
Notes1) This table is based on uniformly loaded floor with a design live load of 40 psf dead load of 15 psf and a deflection limit of L/360. For other applications contact your TRIFORCE® representative.2) This table may be used for floor joist spacing of 24 inches on center or less.3) Residential design with simple span only. No cantilever4) Do not cut first vertical web. Distance base on a full length panel
Mechanical Clearances
Mechanical Opening Dimension
Depth Round Square Rectangular
9½"5"4" x 6"3" x 9"
11⅞"7¼"5¾" x 5¾"3" x 13"
14"8½"6½" x 6½"3" x 14", 6" X 8"
16"9½"7½" x 7½"3" x 15"
Distance
Contact your TRIFORCE®
representative for more details.
26www.openjoisttriforce.com US Specifier Guide
Strongbacks
Strongbacks must be of dry lumber and secured with 2 spiral
or resined 3" nails or 2 - 3" screws at mid-span, to a vertical
brace or diagonal web.
Strongback can be cut between 2 joists for ducts, pipes and
wires if needed, but at least 3 consecutive joists must remain
attached together.
9 ½" = 2x4
11 ⅞" = 2x4
14" = 2x4 or 2x6
16" = 2x6 or 2x8
Detail N5
Strongback (at mid span)
Option #1
2x3 flanges: 1 - 3" (10d)
through bottom flange
and 1 - 3" (10d) through
the diagonal, adding
adhesive will insure long
term performance
2x4 flanges: 2 - 3" (10d) through bottom flange and 1 -
3" (10d) through the diagonal.
Adding adhesive will ensure long term performance.
Gun nails can be substituted with 3" screws.
Option #2 (suggested)
Secure vertical side block (2x4)
as per detail, with 2 nails* to
both chords and strongback to
vertical with 2 nails*. *(gun nails
0.122” x 3 1/4”)
Adding adhesive will provide
an ultimate connection for high floor performance. Gun
nails can be substituted with 3" screws.
Strongback Overlap
Strongback 2
Joint cover of 32", center on splice(same height as strongback 1 and 2)
Strongback 1
3 rows of nails (0.122" x 3 ¼") at 4" c/c
27 US Specifier Guide Open Joist TRIFORCE®
TRIFORCE® Floor Performance
For more than a decade the National
Building Code of Canada has introduced
a method of calculation which takes into
account the performance of a floor as a
whole, i.e., the ability of the Assembly to
reduce vibrations and deflection induced
by any movement.
Essentially, we feel both when someone
moves on a floor where we are sitting,
deformation is induced by the weight
of this person and vibration due to the
shock wave imposed by the movement
of this person.
For several years the engineered wood
industry has advocated a deflection
criteria of L/480, more severe than
the minimum standard of the National
Building Code, however, this approach
was assessing only one part of the
performance of the floor, deflection.
The Calculation method advocated by
the CNBC takes account of two factors
that can influence the performance of
floor, making it much more efficient. For
these reasons, since the beginning of
the 2000s, the method of calculation is
mandatory and replace the standard of
L/480 in Canada.
To comply with these requirements the
vibration test is an integral part of our
design software and can assess the
performance of several floor assemblies.
This option is also available in our US
version of the software to help providing
the best floor solution to end-users.
The advantage of the concept
of open web joists...
One of the ways to effectively increase
the performance of a floor, is to
increase transversal rigidity, that is, to
link perpendicular joists. Much of this
transversal link is through the subfloor.
With the concept of the open web joist,
the addition of a continuous strongback
in solid wood contributes to the effective
link which will have a major impact on
the performance of the floor. In addition,
the ease with which these continuous
strongback can be installed and
especially the effectiveness of nailing
make its installation a MUST.
Other methods can be used to ensure
good performance of your floor, for
example;
• The use of a subfloor nailed and
glued will have a beneficial effect
providing a link more effective
between joists and subfloor while
eliminating the risk of nose due to a
poorly nailed subfloor.
• The use of a thicker subfloor will also
help increase the performance of your
floor by increasing the distribution of
loads more between the joists.
• Reducing Spacing or increase the
height of the joists would also
increase floor performance.
Why the Industry still uses the
L/480 concept?
Normally this notion should have been
replaced by the concept of the Assembly
floor, it is wrong to claim that only
reducing joists deflection prevents
vibration problems.
Assembly approach is much more
efficient, the last ten years have shown.
Due to the complexity of the method
of calculation and the wide range
of possibility of assemblages, some
manufacturers have been slow to update
with this concept.
How can I get an idea of the
property of these additions
Here are a few examples:
Assembly floor base
• Subfloor ⅝" only nailed
• Height 11 ⅞
Allowable span: 14' 5"
Use of a subfloor glued and nailed,
Allowable span: 15' 9"
Use of a continuous link and a subfloor
nailed and glued, Allowable span: 17' 2"
Keeping in mind that a factor of 0.5
assumes a greater floor performance
than 0.99.
With a span of 14' 5", the floor
performance ratio is 0.99, with the
same span adding a glued subfloor, this
ratio drops to 0.76, and if a continuous
strongback is added, this ratio, is
now 0.60, a 40% increase in floor
performance.
28www.openjoisttriforce.com US Specifier Guide
Fire Performance
Since 1990, a lot of work has been done
on fire rated floor and wall assemblies in
Canada through the National Research
Council and in US. Most Engineered
product manufacturers team up to
help providing guidelines but moreover
typical floor assemblies to end users like
architects and builders. This large scale
effort conducted by NRC, lead to the
many publications of floor assemblies
including engineered wood products
in section A-9.10.3.1.B of the National
Building Code.
In this section more than 300 assemblies
for engineered products are listed with
acoustical performance rating (STC/IIC)
and most of them are fire rated.
In US, the American wood council has
also published a document entitled
«Design for Code Acceptance – Fire
rated wood frame wall and floor/ceiling
assemblies» which also provides generic
details for engineering wood products.
Open Joist TRIFORCE® Fire
Performance Rating?
Historically, the OpenJoist and the
TRIFORCE® products have outperformed
other types of engineered wood products
like I-Joist or Floor Trusses using metal
connectors. OpenJoist has, in its web
material, a larger thermal mass that
dictates a longer time to increase in
temperature and therefore enhance
its fire resistance; this thermal mass
increase is even more significant when
strongbacks are in place.
Moreover the open configuration will
increase the lateral heat transfer and
allows increased thermal transmission
evenly throughout the void spreading
out the elevated temperature and again
enhancing the fire performance of
the structure.
Again today with the introduction
of the new generation of OpenJoist
products – TRIFORCE®, our product
has demonstrated outstanding fire
performance. Both OpenJoist products
carry a 1 hour rating with 1 layer of ⅝
gypsum board Type C for all flange sizes
and depths. We are one of the few
that still provide this 1 hour fire rated
assembly in its simplest form which
greatly expedites its field installation.
Based on its outstanding fire
performance, the open joist TRIFORCE®
product can be used in any of the listed
assemblies of the National Building code
providing equivalent fire resistance.
• Fire rated Assembly – 1 hour with 1
layer of ⅝ type C
• Fire rated Assembly – 1 hour with 2
layers of ½ type C
• Fire rated Assembly – 45 minutes 1
layer of ⅝ type X
1. TRIFORCE®
2. Strongbacks
3. Resilient Channels
4. Gypsum Board
5. Insulation
6. Sub-Floor
4
2
1
3
5
6
29 US Specifier Guide Open Joist TRIFORCE®
1- Sub floor :
Option 1: Install two layers of nominal
23/32-inch thick tongue and groove
plywood subfloor sheathing. Apply a
nominal 1/8-inch bead of adhesive
meeting the following requirements:
ASTM D 3498 Standard Specification
for Adhesives for Field Gluing Plywood
to Lumber Framing for Floor Systems,
meets American Plywood Association
specifications AFG-01. Apply the base
layer of sheathing to the top side of
the wood truss (item 2) and secure
using 2-inch long X 0.113-inch diameter
smooth shank nails perimeter and
12-inches on center in field. Install the
face layer of sheathing over the base
layer with a 24-inch overlap of joints.
Secure face layer using 3-inch long,
0.12-inch diameter smooth shank nails
spaced 6-inches on center around the
perimeter and 12-inches on center in
the field.
Option 2: Install one layer of nominal
23/32-inch thick tongue and groove
plywood subfloor sheathing. Apply a
nominal 1/8-inch bead of adhesive
meeting the following requirements:
ASTM D 3498 Standard Specification
for Adhesives for Field Gluing Plywood
to Lumber Framing for Floor Systems,
meets American Plywood Association
specifications AFG-01. Apply the
sheathing to the top side of the wood
truss (Item 2) and secure using 2-inch
long X 0.113-inch diameter smooth
shank nails spaced 6-inches on center in
the field. Minimum topping thickness for
lightweight concrete or nominal weight
concrete is 1-1/2-inches. Minimum
topping thickness for proprietary gypsum/
cement/sand topping is 3/4-inch.
2- Structural members :
Use a minimum 9-1/2-inch open joist
TRIFORCE® Joist spaced at a maximum
of 24-inches on-center. Fasten wood
truss to rim board with 2-3/8-inch long,
8d common nails. Fasten 1 nail through
the rim board into the end of each
flange, and one on each side of the truss
web into the bearing plate.
1-Hour Fire Resistance Rated
Floor Assembly
Floor/Ceiling – 100% Design Load – 1 Hour Rating – 1 Layer Gypsum
1- Option 1
2
4
6
5
3
1- Option 2
30www.openjoisttriforce.com US Specifier Guide
3- Support :
Install strongback consisting of 2x6 and
2x4 lumber. Install strongback through
the closest bottom open truss to the
center on the wood truss (Item 2).
Secure 2x4 lumber to the wood truss
(Item 2) using 3-1/4-inch long, 12d
common nails and adhesive. Secure
the strongback to each wood truss
(Item 2) using 2-1/4-inch long, 12d
common nails and adhesive meeting the
specifications above.
4- Resilient channels :
Install ½-inch deep, 2-1/8-inch wide
nominal 25 GA galvanized steel “hat
shaped” (RC-2) channels spaced
16-inches on-center and applied
perpendicular to the Wood Truss,
ensuring channels are installed
back-to-back at butt joints of the
gypsum board (Item 5). Secure resilient
channels to the bottom flange of each
Wood Truss (Item 2) using number 6,
1-5/8-inch long Type W coarse thread
drywall screws.
5- Gypsum Board :
Install 1 layers of 5/8" of Gypsum
Board Type C. Long edges located
between joists perpendicular to the
resilient channels (Item 4) using number
6-incches, 1-1/4-inch long Type S
screws spaced 6-inches on center with a
minimum distance of 1-1/2-inches from
the panel edges. Joints are taped and
finished with 2 layers of compound.
6- Insulation :
Install nominal 3-inch thick Roxul Safe’n
Sound mineral wool insulation press fit
between the bottom flanges of the wood
truss (Item 2).
Reference: Intertek report DTM/FWT 60-10 for a 1-hr Fire Resistance rated floor assembly
31 US Specifier Guide Open Joist TRIFORCE®
Sound Performance
Acoustical Performance
Even if Open Joist published its own
acoustical performance rating, once
again, the listed assemblies of section
A-9.10.3.1.B starting at assembly F22
can be used in your project. Moreover,
as part of the NCR effort a software
has been design and available on NRC
website can help you out in finding the
proper performance for your need.
http://www.nrc-cnrc.gc.ca/eng/ibp/irc/
software.html
STC and IIC Defined
Since late 90’s, building codes have
stringent requirements of acoustical
performance, two main components of
acoustical analysis are set as guidelines
for assess noise generate in a building.
These two methodologies are Impact
Insulation Class (IIC) and a Sound
Transmission Class (STC)
Impact Insulation Class – the impact
insulation class would be a rating in
Decibel on how well a floor attenuates
impact sounds, such as footstep
Sound Transmission Class – the sound
transmission class would rate in decibel
how well a floor or a partition wall would
attenuate airborne sound, such as music.
For both cases higher figures are better
results
Floor/Ceiling Assembly Ratings for
Multi-family building
How do we increase
acoustical performance?
As mentioned above, a lot of efforts
were put toward acoustical performance,
mostly for multifamily complex and
high end condominium where sound
transmission takes all its meaning. After
decades of testing NRC has developed
tables to help architects and builders in
finding the proper floor assembly.
Like, fire performance, acoustic
performance will be dictated by the
floor assembly, based on the NRC
tables published in the NBCC in annex
A-9.10.3.1.B and proprietary testing on
OJ2000 and open joist TRIFORCE®,
we have tried to clearly express how to
increase the acoustical performance of
a floor.
32www.openjoisttriforce.com US Specifier Guide
QuickTools Software
Barrette Structural has created an easy
to use, sophisticated, state of the art
software solution designed to suit all
of our customer’s needs, focusing on
user friendliness, detailed engineering
analysis, quotes, orders and layouts.
Our solutions will help your company on
every level, from whole floor analysis to
individual member sizing.
QuickTools Layout Assistant is a fully
integrated 3D software solution that
easily provides a robust layout and open
joist TRIFORCE® design solution as well
as the full engineering analysis required
by major building codes throughout
North America and Europe. Quickly
draw Walls, Beams, Columns, Openings,
Headers and open joist TRIFORCE®
and Quickly analyze the load transfer.
QuickTools Layout Assistant is available
for download and can be obtained from
an open joist TRIFORCE® Representative
via download.
QuickTools Analyzer Assistant is a single
member sizing software that enables
Engineers, Architects and Designers to
size the open joist TRIFORCE® floor
joists. QuickTools Analyzer Assistant is
available as a stand alone software for
download and can be obtained from an
open joist TRIFORCE® Representative
via download.
Hardware Requirements
• Multi-Core Intel Xeon, or i-Series
processor or AMD equivalent
with SSE2 technology
• 2GB Ram (Min)
• Windows 7, Vista or
XP Professional
• DirectX® 10 capable graphics card
• 2 GB free disk space
• MS-Mouse or 3Dconnexion
compliant device
• Internet connection for license
registration and prerequisite
component download.
Manufacturer or Distributor References
Job number:
Customer:
Drawing by:
Building address:
Perimeter materialFixed Trim Specification Joist Characteristics (Top-Bottom, Depth, Length, Plies, Spacing)
BEARING ANALYSIS
CHORD CONCENTRATED LOAD ANALYSIS
SHEAR AND BENDING ANALYSIS
LOAD CASES
REINFORCEMENTS
LabelWidth, Center
Label
CriticalLC - UNB
CriticalLC - UNB
CriticalLC - UNB
CriticalLC - UNB
CriticalLC - UNB
Uplift
at*
at*
* From the left end of joist.
NOTES
LOADING
VIBRATIONSDEFLECTION
Date:Page:
Calculated CriteriaCamb Crt.Calc.UNB
Project:
Joist id:
Critical
LOAD CASE Camb
filename: UserDefaults_CNB2005.oja
Left: 0.000'', right: 0.000''Left: None, right: None OJ314 (3 X 2, 11 7/8", 16-0-0, 1 ply, 19.20" o.c.)
OPEN JOIST TRIFORCE® is in accordance with NBC 2005 and OBC 2006, part 4 and 9 and CAN/CSA O86-09 and take in consideration the vibration criterion as per NBC 2005, section 9.23.4.2 (2). OPEN JOIST TRIFORCE® was evaluated by CCMC (report # 13474-R) and is quality controlled by a qualified third part agency. Parts are joined together with phenol-resorcinol adhesives. Lumber used for diagonal and vertical web members is visually graded in-plant as per quality control manual. The end panel is made with 3/8” OSB, web stock quality. A sub-floor must be attached to the top chord member according to the building code. If specified, strong backs must be of dry lumber and attached to the joists, according to current practice. Required bearing length must be determined for each application based on specifications by the manufacturer and must never be less than 1.5 inches. OPEN JOIST TRIFORCE® must be used under dry conditions. Refer to the specifications by the manufacturer for details of installation.
RF KD RF_____(RRKD)RF KD(fis)(lb)(lb)L 0-5-8, 0-2-121008 1.00 0.31 2#1 --R 0-5-8, 15-9-41008 1.00 0.49 2#1 --
LC1 : 1.4DLC2 : 1.25D+1.5ILL
LEGEND: L: Live. D: Dead. I: Importance Category Factor.
PF PR KD PF_____(PRKD)(lb)(lb)
No concentrated load in analysis.
VF VR KD VF_____(VRKD)
MF MR KD MF_____(MRKD)
(fis)(lb)(lb)
(fis)(lb.ft)(lb.ft)
15-9-4 979 2057 1.00 0.48 2#1
7-11-12 3804 4648 1.00 0.82 2#1
Normal (IDS= 0.90 IDW= 0.75 IL= 1.00 IS= 1.00 IW= 1.00)
BUILDING IMPORTANCE CATEGORY
No reinforcement required.
- W1 TOP AREA load, Position (in) from LEFT: start=0.0000, end=192.0000, Magnitude (psf): L=40, D=10- W2 BOTTOM AREA load, Position (in) from LEFT: start=0.0000, end=192.0000, Magnitude (psf): D=5- W1 TOP AREA load, Position (in) from LEFT: start=0.0000, end=192.0000, Magnitude (psf): L=40, D=10- W2 BOTTOM AREA load, Position (in) from LEFT: start=0.0000, end=192.0000, Magnitude (psf): D=5
(in)(in)(in)(in)Live Span L-RLCL1 : L 1 0.345 --L/540 0.518L/3600.67
Dead Span L-RLCD1 : D 1 0.129 --L/14400.518L/3600.25
Total Span L-RLCT1 : D+L 1 0.475 -0.475 L/393 0.777L/2400.61
LiveBare Joist
Span L-RLCL1 : L 1 0.345 --L/540 0.518L/3600.67
Sheating: 19/32 OSB NailedCS (Continuous Strongback): 2-2 X 4 SPFStrapping: NONEGypsum Board: NONESpan L-R = 187'', LV= 192''(Span L-R)3/LV3= 0.91
2005 NBC (Canada)/1.4.1107.0
2014-02-25 1 of 1
33 US Specifier Guide Open Joist TRIFORCE®
Single Framing Connectors
Single Open Joist TRIFORCE® - U.S./Allowable Load (lbs)
Joist Height
Top Flange Face Mount 45˚ Skew
Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load
Header Joist DF SPF Header Joist DF SPF Header Joist DF SPF
Joist Width = 2½"
9 ¼ITS2.56/9.25 2 6-10d —105 1520 1150 IUS2.56/9.25 2 8-10d —75 950 815 SUR/L2.56/9 3�/��14-16d 2-10dx1½195 2015 1735
11 ⅞ITS2.56/11.88 2 6-10d —105 1520 1150 IUS2.56/11.88 2 10-10d —75 1185 1020 SUR/L2.56/11 3�/��16-16d 2-10dx1½195 2305 1980
14 ITS2.56/14 2 6-10d —105 1520 1150 IUS2.56/14 2 12-10d —75 1420 1220 SUR/L2.56/14 3�/��18-16d 2-10dx1½195 2590 2230
16 ITS2.56/16 2 6-10d —105 1520 1150 IUS2.56/16 2 14-10d —75 1660 1425 SUR/L2.56/14 3�/��18-16d 2-10dx1½195 2590 2230
Joist Width = 3½"
9 ¼ITS3.56/9.25 2 6-10d —105 1520 1150 MIU3.56/9 2 16-10d 2-10dx1½180 2305 1980 SUR/L410 2⅝14-16d 6-16d 1120 2015 1735
11 ⅞ITS3.56/11.88 2 6-10d —105 1520 1150 IUS3.56/11.88 2 12-10d —75 1420 1220 SUR/L410 2⅝14-16d 6-16d 1120 2015 1735
14 ITS3.56/14 2 6-10d —105 1520 1150 IUS3.56/14 2 12-10d —75 1420 1220 SUR/L414 2⅝18-16d 8-16d 1520 2500 2150
16 ITS3.56/16 2 6-10d —105 1520 1150 IUS3.56/16 2 14-10d —75 1660 1425 SUR/L414 2⅝18-16d 8-16d 1520 2500 2150
Joist Height
Adjustable Height Field Slope & Skew
Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load
Header Joist DF SPF Header Joist DF SPF
Joist Width = 2½"
9 ¼THAI3222 2¼6-10d 2-10dx1½—1715 1590 LSSUH310 3½14-16d 12-10dx1½990 1600 1385
11 ⅞THAI3222 2¼6-10d 2-10dx1½—1715 1590 LSSUH310 3½14-16d 12-10dx1½990 1600 1385
14 THAI3222 2¼6-10d 2-10dx1½—1715 1590 LSSUH310 3½14-16d 12-10dx1½990 1600 1385
16 See Wood Construction Connectors catalog for hanger selection.See Wood Construction Connectors catalog for hanger selection.
Joist Width = 3½"
9 ¼THAI4222 2¼6-10d 2-10dx1½—1715 1590 LSSU410 3½14-16d 12-10dx1½990 1625 1365
11 ⅞THAI4222 2¼6-10d 2-10dx1½—1715 1590 LSSU410 3½14-16d 12-10dx1½990 1625 1365
14 THAI4222 2¼6-10d 2-10dx1½—1715 1590 LSSU410 3½14-16d 12-10dx1½990 1625 1365
16 See Wood Construction Connectors catalog for hanger selection.See Wood Construction Connectors catalog for hanger selection.
Supports 11⁄8" to 11⁄2" thick flanges
Typical ITS Installed on LVL
Funnel Flange
W
The Strong-Grip™ seat
secures I-joists in position
without joist nails
17⁄16"
2"2"ITS
ITS – 18 gauge
The ITS top flange hanger with its
Strong-Grip™ seat and Funnel Flange™
secures joists with flange thicknesses
from 11⁄8" – 11⁄2" and installs faster
than any other top flange hanger. Joist
nails are not required.
1) Shaded hangers require web stiffeners at joist ends. Web stiffeners may be required for non-shaded hangers by joist manufacturer.2) THAI hangers require a minimum of 4 top and 2 face nails installed.3) The B Dim is the length of the hanger seat.
34www.openjoisttriforce.com US Specifier Guide
Min. of 2½"
of Top Flange
Min. Nailing
Configuration
Typical THAI Installation
with Minimum Nailing Conguration
Do not nail
within 1/4"
of multiple
ply seam.
THAI(THAI-2 similar)
THAI – 18 gauge
This hanger has extra long straps and
can be field-formed to give height
adjustability and top flange hanger
convenience. Positive angle nailing
helps minimize splitting of the joist’s
bottom flange. Minimum nailing is
shown in the table above. Strap must be
field-formed over the top of the header
by a minimum of 21⁄2". Web stiffeners
required when used with joists.
The Strong-Grip™ seat secures I-joists in positionwithout joist nails
IUS
11⁄8"
H
2"1⁄4"
Locator Tab
Funnel Flange™
B
SUL HSUR
IUS – 18 gauge
The IUS is a hybrid hanger that
incorporates the advantages of
face-mount and top-flange hangers.
Joist nails are not required.
SUR/L – 16 gauge
HSUR/L – 14 gauge
All models are skewed 45°. Normally
accommodates a 40° - 50° skew. The
installation of these hangers does not
require a beveled end cut.
35 US Specifier Guide Open Joist TRIFORCE®
Double Framing Connectors
Double Open Joist TRIFORCE® - U.S./Allowable Load (lbs.)
Joist Height
Top Flange Face Mount 45˚ Skew
Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load
Header Joist DF SPF Header Joist DF SPF Header Joist DF SPF
Joist Width = 5"
9¼LBV5.12/9.25 2½10-16d 2-10dx1½230 2590 2060 MIU5.12/9 2½16-16d 2-10dx1½180 2305 1980 HSUR/L5.12/9 2��/��12-16d 2-10dx1½140 1785 1540
11⅞MIT311.88-2 2½8-16d 2-10dx1½185 2305 1665 MIU5.12/11 2½20-16d 2-10dx1½180 2880 2475 HSUR/L5.12/11 2��/��16-16d 2-10dx1½140 2380 2050
14 MIT314-2 2½8-16d 2-10dx1½185 2305 1665 MIU5.12/14 2½22-16d 2-10dx1½180 3170 2725 HSUR/L5.12/14 2��/��20-16d 2-10dx1½140 2975 2565
16 MIT5.12/16 2½8-16d 2-10dx1½185 2305 1665 MIU5.12/16 2½24-16d 2-10dx1½180 3455 2970 HSUR/L5.12/16 2��/��24-16d 2-10dx1½140 3330 2865
Joist Width = 3½"
9¼B7.12/9.25 2½14-16d 6-16d 870 3800 2650 HU410-2 2½18-16d 8-16d 1540 2680 2305 HU410-2x5 2½18-16d 8-16d 1155 2145 1845
11⅞B7.12/11.88 2½14-16d 6-16d 870 3800 2650 HU412-2 2½22-16d 8-16d 1540 3275 2820 HU412-2x5 2½22-16d 8-16d 1155 2620 2255
14 B7.12/14 2½14-16d 6-16d 870 3800 2650 HU414-2 2½26-16d 12-16d 2315 3870 3330 HU414-2x5 2½26-16d 12-16d 1735 3095 2665
16 B7.12/16 2½14-16d 6-16d 870 3800 2650 HU414-2 2½26-16d 12-16d 2315 3870 3330 HU414-2x5 2½26-16d 12-16d 1735 3095 2665
Joist Height
Adjustable Height Field Slope & Skew
Model B Dim Fastener Type Uplift (160)Down Load Model B Dim Fastener Type Uplift (160)Down Load
Header Joist DF SPF Header Joist DF SPF
Joist Width = 5"
9¼ THAI-23 2½ 6-10d 2-10dx1½ — 2020 2020 LSU5.124 3½ 24-16d 16-10dx1½ 760 1790 1550
11⅞ THAI-23 2½ 6-10d 2-10dx1½ — 2020 2020 LSU5.124 3½ 24-16d 16-10dx1½ 760 1790 1550
14 THAI-23 2½ 6-10d 2-10dx1½ — 2020 2020 LSU5.124 3½ 24-16d 16-10dx1½ 760 1790 1550
16 See Wood Construction Connectors catalog for hanger selection. See Wood Construction Connectors catalog for hanger selection.
Joist Width = 7"
9¼
See Wood Construction Connectors catalog for hanger selection.See Wood Construction Connectors catalog for hanger selection.11⅞
14
16
Typical Double LBVHanger Installation BA, B, HB and LBV are
acceptable for weld-on
applications (LBV shown).
See Installation Information.
LBV features positive
angle nailing, no web
stiffeners are required
LBV
(B Similar)
B – 12 gauge
LBV – 14 gauge
The B series offers versatility for joists
and SCL lumber. Enhanced load capacity
widens the range of applications for
these hangers. The LBV is designed
especially for use with multiple ply
headers 11⁄2" to 13⁄4" thick, and may be
used for weld-on applications.
1) Shaded hangers require web stiffeners at joist ends. Web stiffeners may be required for non-shaded hangers by joist manufacturer.2) The B Dim is the length of the hanger seat.3) THAI hangers require a minimum of 4 top and 2 face nails installed. THAI-2 must be special ordered. Specify hanger seat width between 3⅛" and 5�/��".4) LSU's can not be field skewed. Skew option must be factory ordered, specify skew angle.5) Skew option must be special ordered. Specify skew angle and direction (e.g. HU412-2x, SKR45°).
36www.openjoisttriforce.com US Specifier Guide
11⁄4"
HU410
Typical HU7 Installation
“A” Flanges
Slope to45° up or down
LSSU28
“A” Flanges
Slope to45° up or down
LSSU410
(LSSU210-2 similar)
MIU with correct
PAN installation
11⁄8"
H
21⁄2"5⁄16"
MIU
MIU – 16 gauge
The MIU series features 16 gauge steel and extra nailing for
higher loads.
HU – 14 gauge
The HU series features uplift capacity and a large selection
of sizes and load ranges. HU hangers have triangle holes
that can be filled for increased loads. Web stiffeners required
when used with joists.
LSSU, LSSUI – 18 gauge LSSU210-2, LSSU410 and LSSUH310 – 16 gauge LSU – 14 gauge
LSSU models provide uplift capacity and can be field sloped and/
or skewed to 45°. Web stiffeners required when used with joists;
cut web stiffener to match angle on sloped conditions.
Typical MIT Installed
on a Double LVL
Optional
NailLocations
21⁄2"
MIT
MIT – 16 gauge
The MIT’s Positive Angle Nailing helps minimize splitting of the
joist’s bottom flange. Features uplift capacity and extended
seat design (to allow installation of slightly undercut joists).
37 US Specifier Guide Open Joist TRIFORCE®
Warranty
Products manufactured by Barrette Structural Inc. (hereafter: “Barrette Structural”) are guaranteed against
manufacturing and material faults for the life of the structure.
This limited lifetime warranty is applicable if the products manufactured by Barrette Structural have been
correctly stored, protected from climatic conditions such as sunlight, humidity, rain or wind, and installed
in conformity with the guidelines and instructions supplied, either as floor joists or roof trusses, whichever
is the case.
This warranty does not cover perceived problems of design or defects caused by:
• prolonged exposure to water or climatic conditions (in particular following construction work
or due to construction delays), fire, flooding, natural disasters or any other cause beyond the control
of Barrette Structural;
• faults in the structure following poor construction, installation or assembly practices;
• damage to the structure before, during or after installation;
• failure to respect installation instructions, current building code norms or generally accepted practices in
the construction industry;
• the transformation of joists or roof trusses after their initial installation;
• the presence of mold, spore, rot or termites or any other element likely to degrade the installed product;
• the application of a preservative treatment or any other coating not approved by Barrette Structural;
• defective ventilation, repeated exposure to water or humid conditions;
• excessive loads or tension not allowed for by Barrette Structural or usage that does not comply
with the type for which the product was designed.
IN THE CASE OF PROBLEMS WITH MANUFACTURING FAULTS COVERED BY THIS WARRANTY, BARRETTE
STRUCTURAL WILL PAY REASONABLE COSTS FOR LABOR AND MATERIALS TO REPAIR OR REPLACE
ONLY THE JOISTS OR ROOF TRUSSES UNDER WARRANTY. THESE COSTS MUST NOT EXCEED BY MORE
THAN THREE TIMES THE INITIAL PURCHASE COST OF THE JOISTS OR ROOF TRUSSES INVOLVED IN THE CLAIM.
IN THE EVENT OF A CLAIM, THE RESPONSIBILITY OF BARRETTE STRUCTURAL IS LIMITED TO THAT
WHICH HAS BEEN OUTLINED IN THIS WARRANTY. BARRETTE STRUCTURAL MAY NOT BE HELD
RESPONSIBLE FOR ANY OTHER DAMAGE WHATSOEVER.
All claims must be communicated to Barrette Structural within 30 days of the discovery of any anomaly or
problem covered by this warranty, at the following address:
BARRETTE STRUCTURAL
555, rang Saint-Malo, Trois-Rivières (Québec) G8V 0A8 CANADA
To obtain further information, please contact your representative.
Product warranty
Peace of mind underfoot™
www.openjoisttriforce.com