NOTE: Shear Wall load shown is LRFD loading and includes the seismic load due to the weight of the shear wall line.

GIVEN:

detail at each shear wall end. The boundary member

$2-$Story shear wall sketch is shown size is $4$ x

F roof $=8,800lbs,($LRFD Load, includes seismic load from shear wall$)$

F floor $=4,200$ lbs $($LRFD Load, includes seismic load from shear wall$)($both forces are the results of the diaphragm analysis and are not adjusted$)$

Roof DL on shear wall $=180$ plf

Roof LL on shear wall $=240$ plf

Floor DL on shear wall $=60$ plf

Floor LL on shear wall $=320$ plf

Wall DL $=15$ psf

F$/$W roof $=\frac{F}{}W$ roof $=0\mathrm{.}3$

F$/$W floor $=0\mathrm{.}15($for shear wall analysis$)$

EF$/$ WW floor$=0\mathrm{.}2($for diaphragm analysis$)$

PROBLEM NO $3-(40$ Points$)$

DETERMINE:

$(1)$ Unit shear in second floor shear walls $.(5$ points$)$

$(2)$ Sheathing, fastener size and fastener spacing in second floor shear walls $B$ and points$)$

$(3)$ Unit shear in first floor shear walls. $(5$ points$)$

$(4)$ Sheathing, fasteners size and spacing in ground $($first$)$ floor wall walls $B$ and $C.(5$ points$)$

$(5)$ Draw Free Body diagram for shear wall C $(6$ points$)$

$(6)$ Determine maximum Tension and Compression forces in the boundary members of shear wall C$1$ at the ground level only $(7$ points$).$

$(7)$ Draw axial forces diagram for the drag strut of the first floor shear walls $($second floor diaphragm to first floor shear wall shear force transfer$)$ and determine maximum drag strut force. $(7$ points$)$