Specifications (2) ivi , 2o-o03,Z,
W,F0 Si../ A 1/4-tJoC4
Structural "Gravity and Lateral" Calculations
For
New addition above existing garage of single family residence
Located At
9680 SW Riverwood Lane, Tigard, OR 97224
Jurisdiction: Tigard
41/40tp PR Fs
11/1/2020 0,Gf Ne it)
Revised 12/13/20, 2-4-2021 7 E
ir
Calculations and Sketches GON 02
by y90`7f't5. " ►+
Mark Ennis, PE rEPHES
for Tim Austin !EXPIRES: 12-31- 2021
Page G1 to G4 Gravity Calculations
Page Ll to L5 Prescriptive Wall Bracing
Codes: 2017 ORSC based on the 2015 IRC,
Gravity Load: Floor Live=40psf, Roof(Snow) Load=25psf
Lateral Design: Prescriptive
Summary
These calculations are for a new 2nd floor adddition above an existing 1-story garage.
Revisions as follows dated 2-4-2021:
1.The existing garage stud walls were 2x4@16"oc and they are OK to remain.
2.The glulam beam in garage is OK to have a 2"hole and a 2-9/16" hole as shown on drawings.
3.The existing 3-1/2"x13" DF header at garage door is OK to remain with an 1-3/4"x14" LVL attached to
inside face with (3) 1/4x SDS screws at 24"oc. Extend 6"past garage door opening at each end.
4.Connect the new addition top plate with the existing using a CS22 x 24"strap. (12"old and 12"new)