Fifth week

1. Finished building shear wall number 7 and 8.
2. Cut OSB 3/8'' at the bottom.
3.Have done the test number 5.

After-test

Reference disp:3.313x0.6=1.988in.

43 circles in total.

Peak load:4093.9 lbs

Ultimate displacement+:2.83in

The failure occurs at the bottom at 38^th circle

The bottom fastener are pulled out.

Fasteners on the chord studs,2’ to bottom, are pulled out.

2 fasteners on the field stud at bottom is pulled out, bottom one screw head is cut off.

No damage is observed on the strap, no fastener tilted.

Steel channel, hold downs are all good.

Photos  

Pre-test

After-test

Videos

http://www.youtube.com/watch?v=_M71Qu5Qit8

http://www.youtube.com/watch?v=8asofptVkwg

Later, I should combine these two videos.