30B-094 (4) 3a� � � gY
+� RYAN S. H�ELLWIG, PE • STRUCTURAL ENGINEER •
�( _ OF
JM - 9 2014 RYAN S.
HELL WIG
Electric F
NO.37300
January 8, 2014 -
�A
Ben Jenkins
149 Federal Street
Northampton, MA
Re: New Reinforcement to Existing Beam for Existing Basement Pier Removal
Jenkins Residence
149 Federal Street
DESIGN CRITERIA
Floor dead loads: 10 psf
Floor live loads: 40 psf- Unreduced
Tributary widish, for beam- 'l2 of 23 feet= 11' 6"
Three floors stacked on bearing wall above the existing beam
Beale span= 14 feet- on center of new posts
A.,.=483 sq. ft.
KLL= 2
L =0.733 Lo =29 psf- Reduced Live Load -use 30 psf
REINFORCEMENT DESIGN
Two C9 x 15 - ASTM A36
Use wood blocking to build web out to flange tips for joist hangers blocking must bear on bottom flange
Through-bolts 5l8" diameter 8" o/c - stagger 2" from top&bottom
Bolt boles to be 11/16" max - located between existing joists
4 x 4 x 1/4 'Dube Steel. Posts w/ 1" x b" x 9" cap plates & 3/4"x 9" x 9"
30" x 30" or 18" x 48" Footings 1.2" thick-,v/(4) 94 rebar ea. way
All reinforcements to be installed prior to removal of existing pier
* 28 ALDRICH STREET i NORTHAMPTON,MA 01060 •
9 VOICE 413-584-IILWG(4594) 0 FAX 413-584-HLWFax(4593) •