Correspondence r DO W C dd EN@PUVISEDORP DE @o§ V wig. PORTLAND, OR. 97216
CIVIL - STRUCTURAL ENGINEERS PH: (503) 254 - 6292
FAX: (503) 254 -6761
December 23, 1999 c or'i
PROJECT: Mascord plan 2239N
13225 S.W. Rockingham Drive, Tigard Permit #MST1999 -00332
Builder: George Wall Construction
SUBJECT: Wall stud height.
This letter, again, addresses the extra high wall studs at the Garage. This letter
is not a stand alone replacement for the engineering. and is in addition to the
letter dated 12- 15 -99.
Engineering:
1. The studs shall that are 15' -9" high shall be 2x6 at 16 inches o.c. This
addresses the wind that hits the face of this wall. It does not mater what
the sheathing is from this direction.
2. The wall shall be sheathed as an S/0 shearwall. This is as originally
designed. This taller wall still meets the 3 -1/2:1 shearwall ratio. The
originally designed wall only had loads of 48 PLF, well below the 260 PLF
allowable for an S/0 wall. The wind loads will increase by 25% at the
most, which means the wall has loads of 60 PLF.
CONCLUSION: The 15' -9" wall shall be 2x6 at 16" o.c. with S shearwall
nailing.
Sincerely
Payton F. Rowell P.E.
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