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UniSpec II- Store Planning 062411
SECTION 05120 - STRUCTURAL STEEL
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Structural steel framing members, structural steel support members, struts, with required bracing, welds,
and fasteners.
2. Base plates and shear stud connectors.
3. Roof framing other than joists, joist girders, bridging, and continuity angles for joist girders.
4. Frames for rooftop HVAC units, exhaust fans and roof openings larger than 10 inches by 10 inches (except
as shown on the drawings). Frames for openings not shown and sized on Drawings to be field fabricated.
B. Related Sections:
1. Section 01458 - Testing Laboratory Services. Procedures for inspection, testing, and documentation by
Owner furnished testing laboratory.
2. Division 3 - Concrete: Anchorages cast in concrete. Grouting base plates and bearing plates.
3. Section 04200 - Unit Masonry Assemblies: Anchorages embedded in masonry.
4. Section 05090 – Concrete and Masonry Post Installed Anchors: Mechanical and adhesive type anchor
studs, expansion bolts, sleeve anchors, adhesive anchors, and anchor bolts embedded in concrete and ma-
sonry for anchoring and supporting structural members.
5. Section 05210 - Steel Joists: Steel bracing for joists and joist girders.
6. Section 05300 - Metal Deck: Support framing for roof openings.
7. Section 05500 - Metal Fabrications: Miscellaneous steel components.
1.2 REFERENCES
A. The publications listed below form a part of this specification to the extent referenced. Publications are referenced
within the text by the basic designation only.
B. American Institute of Steel Construction (AISC):
1. Specification for the Design, Fabrication and Erection of Structural Steel for Buildings.
2. AISC 303 - Code of Standard Practice for Steel Buildings and Bridges.
3. AISC 360 – Structural Steel Buildings
C. ASTM International (ASTM):
1. ASTM A 36 - Structural Steel.
2. ASTM A 53 - Pipe, Steel, Black and Galvanized, Seamless and Welded.
3. ASTM A 108 - Steel Bars, Carbon And Alloy, Cold- Finished,
4. ASTM A 123 - Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.
5. ASTM A 307 - Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength.
6. ASTM A 325 - Structural Bolts, Heat Treated, 120/105 ksi Minimum Tensile Strength.
7. ASTM A 500 - Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.
8. ASTM A 501 - Hot-Formed Welded and Seamless Carbon Steel Structural Tubing.
9. ASTM A 992 - Structural Steel Shapes.
10. ASTM D 1187 - Asphalt-Base Emulsions for Use as Protective Coatings for Metal.
11. ASTM E 709 - Standard Guide for Magnetic Particle Testing
D. American Welding Society (AWS): AWS D1.1 - Structural Welding Code.
E. Research Council on Structural Connections (RCSC)
1. Specification for Structural Joints Using ASTM A 325 or A 490 Bolts
F. Steel Structures Painting Council (SSPC):
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1. SSPC-Paint 20 - Zinc-Rich Coating Type I - Inorganic And Type II - Organic.
2. SSPC-Paint 22 - Epoxy Polyamide Paints (Primer, Intermediate, And Topcoat).
3. SSPC-Paint 25 - Zinc Oxide, Alkyd, Linseed Oil Primer For Use Over Hand Cleaned Steel Type I And
Type II.
4. SSPC-SP 2 - Hand Tool Cleaning.
5. SSPC-SP 6 - Commercial Blast Cleaning.
1.3 SUBMITTALS
A. Shop Drawings:
1. Indicate profiles, sizes, spacing, and locations of structural members, connections, attachments, and fasten-
ers.
2. Include supplementary parts and members necessary to complete structural steel work, regardless of
whether parts are definitely shown or specified, and furnish bolts, gussets, plates, and related items as re-
quired for proper assembly of items.
3. Include miscellaneous deck support angles as required for proper support of metal deck around columns,
gussets, openings, and obstructions.
4. Indicate welded connections using standard AWS welding symbols. Indicate net weld lengths.
5. Provide setting drawings, templates, and directions for installation of anchor bolts and other anchorages to
be installed by other trades.
6. Indicate top of bearing plate elevations, and elevations above finish floor to the centerlines of embedded
plate, anchor bolts, and all control joint locations.
7. Templates shall be furnished by fabricator with instructions for setting of anchor bolts and bearing plates.
8. Prepare shop drawings under seal of a Professional Structural Engineer registered in the State in which Pro-
ject is located.
9. Omission from shop drawings of materials required by Contract Documents does not relieve Contractor of
responsibility of furnishing and installing such materials even though shop drawings may have been re-
turned and reviewed.
B. Quality Control Submittals: Submit design calculations for structural steel connections not detailed on Contract
Documents or proposed differently than as shown on Contract Documents, signed and sealed by Professional
Structural Engineer registered in State in which Project is located.
C. Substitutions: Submit substitutions of sections or modifications of details, or both, and reasons for proposal, with
shop drawings. Clearly identify substitutions as such. Accepted substitutions, modifications, and necessary
changes in related portions of Work shall be coordinated by fabricator and shall be accomplished at no additional
cost to Wal-Mart.
D. Submit Shop Drawings and Quality Control Submittals within 10 working days of Contract date.
1.4 QUALITY ASSURANCE
A. Qualifications for Welding Work: Qualify welding operators in accordance with Standard Qualification Proce-
dures as required by AWS D1.1.
B. Comply with applicable provisions of the following specifications and documents:
1. AISC 303.
2. AISC 360.
3. RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts."
C. Design connections not detailed on Drawings under direct supervision of a Professional Structural Engineer expe-
rienced in the design of this Work registered in State in which the project is located.
D. Pre-installation Meeting:
1. Contractor shall convene a pre-installation meeting at the site, one week prior to commencing work of this
Section. Require attendance of parties directly affecting work of this Section, including, but not limited to,
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the Owner's representative, Contractor, steel erector sub-contractor and foreman, and Owner’s Construction
Testing Laboratory.
2. Contractor shall notify all attendees at least two weeks prior to the meeting.
3. Contractor shall review preparation and installation procedures and coordinating and scheduling required
with related work.
4. Review foreseeable methods and procedures related to the work, including the following:
a. Tour, inspect, and discuss condition of preparatory work performed by other trades.
b. Review structural loading limitations and bracing requirements.
c. Review drawings, specifications and other contract documents including submittals.
d. Review and finalize construction schedule related to work and verify availability of materials, in-
staller's personnel, equipment, and facilities needed to make progress and avoid delays.
e. Review required inspections, testing, certifying, and material usage accounting procedures.
f. Review weather and forecasted weather conditions, and procedures for coping with unfavorable
conditions.
5. Contractor shall record discussions of the meeting and decisions and agreements (or disagreements)
reached, and furnish copy of record to each party attending.
1.5 DELIVERY, STORAGE AND HANDLING
A. Section 01600 - Product Requirements: Transport, handle, store, and protect products.
B. Store materials to permit easy access for inspection and identification.
C. Keep steel members off ground by using pallets, platforms, or other supports.
D. Protect steel members and packaged materials from erosion and deterioration.
1. Store fasteners in a protected place. Clean and relubricate bolts and nuts that become dry or rusty before
use.
2. Do not store materials on structure in a manner that might cause distortion or damage members or support-
ing structures.
3. Remove salt residue from steel members by power spraying when present as a result of salted roads during
winter weather transport.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Structural Steel:
1. Wide Flange Steel Shapes: ASTM A992.
2. Steel Channels, Angles, Anchor Bolts, Plates and Bars: ASTM A 36.
B. Structural Tubing: ASTM A 500, Grade B.
C. Structural Steel Pipe: ASTM A53, Grade B; ASTM A500, Grade B; or ASTM A 501 as shown on the drawings.
D. Bolts, Nuts, and Washers: ASTM A 325 or A 307 as indicated on Drawings.
E. Welding Materials: AWS D1.1; type required for materials being welded or as indicated on Drawings. E7024
electrodes ("Jet Weld" rods) are not permitted; use only "All Position" rods. (7018LH)
F. Headed Stud Anchors: ASTM A 108, Grades 1010 through 1020, headed-stud type, cold-finished carbon steel;
AWS D1.1, Type B.
G. Adhesive Anchors: Specified in Section 05090.
H. Alkyd Primer: SSPC-Paint 25; Gray color.
1. B50AV11 by Sherwin Williams.
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I. Zinc Rich Primer: SSPC-Paint 20 Type II.
1. Carboline 858, by Carboline.
2. 90-97 Tneme-Zinc, by Tnemec.
J. Asphaltic Mastic: Cold-applied asphalt emulsion complying with ASTM D 1187.
K. Epoxy Top Coat: SSPC-Paint 22.
1. Carboline 893, by Carboline.
2. Series 27 F.C. Typoxy, by Tnemec.
L. Teflon Coated Slide Bearing Pads:
1. Fluorogold, by Furon.
2. Dura-Slide, by Tobi Engineering.
3. Type CSA, by Con-Serv, Inc.
2.2 FABRICATION
A. Fabricate and assemble structural steel in shop to greatest extent possible. Fabricate according to AISC 360.
B. Connections not detailed on Drawings: Engineered by fabricator and subject to review.
C. Fabricator's Responsibility:
1. Errors of detailing, fabrications, and for correct fitting of structural steel members.
2. Do not splice structural steel members. Members having splice not indicated on Drawings will be rejected.
2.3 FINISH
A. Clean, prepare, and shop prime structural steel members.
B. Do not paint surfaces in contact with concrete, or surfaces specified to be galvanized.
C. Galvanized Finish: Minimum 1.25 oz/sq ft zinc (hot-dipped galvanized) coating complying with ASTM A123.
Galvanize the following items:
1. Structural steel angles and plates, exposed to weather and in contact with or embedded in concrete or ma-
sonry.
2. Anchor bolts exposed to weather and in contact with or embedded in concrete or masonry.
D. Epoxy Coating Finish: Prepare structural steel items scheduled to receive epoxy coating by SSPC-SP 6 (Commer-
cial Blast Cleaning) method. Prime steel with SSPC-Paint 20 Type II, zinc rich primer; minimum dry film thick-
ness of 3 mils. Top coat structural steel with SSPC-Paint 22, epoxy coating; minimum dry film thickness of 3
mils. Shop apply zinc rich primer and epoxy coating to the following items:
1. Satellite dish support (from bottom of deck to top of support).
2. Weatherpac support framing.
E. Alkyd Primer Finish: Prepare structural steel items scheduled to receive alkyd primer by SSPC-SP 2 (Hand Tool
Cleaning) method. Prime steel with SSPC-Paint 25 alkyd primer; minimum dry mil thickness of 2 mils. Apply
alkyd primer to the following items:
1. Structural steel items not specified as galvanized or scheduled to receive epoxy coating.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine conditions and adjacent areas where products and materials will be installed and verify that conditions
conform to product manufacturer's requirements. Verify elevations of concrete and masonry bearing surfaces and
locations of anchorage. Verify that all conditions are ready to receive Work. Do not proceed until unsatisfactory
conditions have been corrected.
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B. Beginning of installation indicates acceptance of existing conditions.
3.2 PREPARATION
A. Supply items required to be cast into concrete or embedded in masonry with setting diagrams to appropriate Sec-
tions.
3.3 SURVEY
A. Employ Professional Engineer or Land Surveyor registered in State in which Project is located, experienced in
survey work, to establish permanent benchmarks as shown and as necessary for accurate erection of structural
steel. Check elevations of concrete and masonry bearing surfaces, and locations of anchor bolts and similar devic-
es, before erection work proceeds, and report discrepancies to Wal-Mart Construction Manager. Do not proceed
with erection until corrections have been made, or until compensating adjustments to structural steel work have
been agreed upon with Wal-Mart.
3.4 ERECTION
A. Set structural steel accurately in locations and to elevations indicated and according to AISC 303 and 360.
B. Make provision for erection loads, and for sufficient temporary bracing to maintain structure safe, plumb, and in
true alignment until completion of erection and installation of permanent bracing.
C. Do not field cut or alter structural members.
D. After erection, paint surfaces not shop painted that are to receive finish painting, except surfaces to be in contact
with concrete. Use a primer consistent with shop coat.
E. Anchor Bolts: Install anchor bolts and other connectors required for securing structural steel to foundations and
other in-place work. Furnish templates and other devices as necessary for presetting bolts and other anchors to ac-
curate locations. Provide post-installed anchors in accordance with Section 05090.
F. Setting Bases and Bearing Plates: Clean concrete and masonry bearing surfaces of bond-reducing materials and
roughen to improve bond to surfaces. Clean bottom surfaces of base and bearing plates.
1. Set loose and attached base plates and bearing plates for structural members on adjusting nuts.
2. Tighten anchor bolts after the supported members have been positioned and plumbed.
3. Grout solidly between bearing surfaces and bases of plates immediately after erecting member and before
additional load is placed on member. Finish exposed surfaces, protect installed materials, and allow to
cure. For proprietary grout materials, comply with manufacturer's installation instructions.
4. Slide bearings: Permanently affixed to member and support, respectively, by welding or bolting as indicat-
ed. Align and level member faces to maintain full contact between surfaces before completing installation.
G. High-strength Bolting: Install high-strength bolts according to RCSC Specification for Structural Joints Using
ASTM A 325 or A 490 Bolts for type of bolt and type of joint shown or specified.
H. Erection Bolts:
1. Comply with ASTM A 307.
2. Hand tighten nut to minimum depth of nut.
I. Perform field welding in accordance with AWS D1.1 or D1.3, as applicable. After installation, grind sight-
exposed field welds smooth, touch-up welds, scratched, or damaged surfaces with primer.
J. Touch-up Painting: Immediately after erection, clean exposed field welds, bolted connections, and abraded areas
of shop paint. Apply paint to exposed areas with same material as used for shop painting. Apply by brush or
spray to provide a minimum dry film thickness of 2.0 mils.
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K. Protective Coating: Apply heavy coat of asphaltic mastic bituminous coating to anchor bolts, base plates, and col-
umns below finished floor where shown on the drawings.
L. Field Painting: Specified in Section 09900.
3.5 QUALITY ASSURANCE TESTING AND INSPECTION
A. Responsibilities: Unless otherwise specified, quality control tests and inspection specified below will be conduct-
ed by the Owner’s Independent Testing Laboratory at no cost to the Contractor in accordance with Section 01458.
The Contractor shall perform additional testing or inspection as considered necessary by the Contractor for assur-
ance of quality control.
1. Work shall be preformed by a Special Inspector – Technical II or Special Inspector – Structural I.
a. In addition to the Special Inspector qualification stated in Section 01458, the Technical II Inspector
shall be an American Society for Non-destructive Testing (ASNT) Non-destructive Testing Techni-
cian, TC-1A Level I, or an American Welding Society (AWS) Certified Associate Weld Inspector
(C.A.W.I.)
2. Inspect all new and/or modified Work requiring inspection under the provisions of this Section.
3. Report of results shall be made after each observation visit
B. High Strength Bolting (Field Installed):
1. General
a. High strength bolting testing requirements pertain to all new and/or modified slip-critical bolted
connections.
b. Visually inspect mating surfaces and bolt type for all slip-critical bolted connections for general
conformance with the contract documents prior to bolting.
c. Verify requirements for bolts, nuts, washers, paint and installation/tightening standards are met.
d. Observe calibration procedures and verify that selected procedure is used to tighten bolts.
e. Test High Strength bolted connections in accordance with bolting standard specified above.
2. Slip Critical Bolts and Tension Bolts: Test bolt tightening in 100% of all bolts. Test a minimum of two
bolts in each connection. Verify that all surfaces of connected elements have been brought into contact at
100% of connections. Verify all tips are removed from "twist"-off bolts.
3. Bearing Bolts: Visually inspect to confirm all plies of connected elements have been brought into contact,
at 100% of connections. This shall apply only to bolts designed for values not requiring exclusion of
threads from failure plane. All other bolts shall be tested as for tension bolts.
C. High Strength Bolting (Shop Installed): For shop fabricated work, perform tests required for field installation, ex-
cept that bolt testing may be reduced or deleted if fabrication shop satisfies AISC Quality Certification Program -
Category I, or more stringent criteria, or is approved by building official and SER.
D. Welding (General):
1. Prior to start of fabrication, determine if fabrication shop meets the criteria for exempting shop welds from
inspection and confirm in writing to building official and SER.
2. Verify qualifications of welders as AWS certified.
3. Verify proposed welding procedures and materials.
4. Verify adequate preparation of faying surfaces.
5. Verify preheat and interpass temperatures of steel, proper technique and sequence of welding, and cleaning
and number of passes are provided as required.
6. Inspect all new and/or modified Work under the provisions of this Section.
E. Welding (Field):
1. Single Pass Fillet Welds – Less than or equal to 5/16”: Visually inspect 100% of all fillet welds for size,
length, and quality, per AWS D1.1
2. Single Pass Fillet Welds greater than 5/16”: Continuously inspect 100% of all fillet welds for size, length,
and quality, per AWS D1.1.
3. Multi-pass Fillet Welds: Continuously inspect 100% of all fillet welds for size, length, and quality, per
AWS D1.1.
4. Partial Penetration Welds: Test 100% of all partial penetration welds exceeding 5/16 inch, using Ultrasonic
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Testing per AWS. D1.1. Test 100% of all partial penetration welds less than 5/16 inch, using Magnetic
Particle Testing per ASTM E709, performed on root pass and on finished weld.
5. Complete Penetration Welds: Test 100% of all complete penetration welds exceeding 5/16 inch, using Ul-
trasonic Testing per A.W.S. D1.1 Test 100% of all complete penetration welds less than 5/16 inch, using
Magnetic Particle Testing per ASTM E709, performed on root pass and on finished weld.
6. Miscellaneous Metals, Inserts and Prefabricated Components: Where integrity of the connections impact
life safety or performance of the building structure, provide testing and inspection as for typical welds pre-
viously specified.
F. Welding (Shop): Perform inspections as for field welding except weld testing may be reduced or deleted if fabri-
cation shop satisfies AISC Quality Certification Program - Category I, or more stringent criteria, and is approved
by building official and SER.
G. Submittal Verification: Verify mill test reports and other submitted documentation for compliance with contract
document.
H. Materials Verification: Verify materials delivered to site comply with contract documents and approved shop
drawings. Materials and verifications include:
1. Structural Steel
a. Identification markings to conform to ASTM standards.
b. Manufacturer’s certified mill test reports.
2. High Strength Bolts, Nuts, and Washers
a. Identification markings to conform to ASTM standards.
b. Manufacturer’s certificate of compliance.
3. Welding Electrodes
a. Identification markings to conform to ASTM standards.
b. Manufacturer’s certificate of compliance.
I. Verification of Detail Compatibility.
1. Inspect on a periodic basis.
2. Review project documents affecting integrity of the structure, including contract documents and pertinent
submittals including approved shop drawings.
3. Visit site at intervals appropriate to the stage of construction to perform review of the structure and visually
confirm general compliance with the contract documents.
4. Inspect the following to verify member orientation, configuration, type, and size comply with details indi-
cated on the contract documents and approved shop drawings:
a. Bracing and stiffening members.
b. Structural member locations.
c. Proper applications of joint details at connections for structural members.
d. Other work critical to the integrity of the building structure.
END OF SECTION
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