Ninth week

From Peng

To file

11/30/2011

Test 11R

11_Retest_8x9-ledger-osb-54mil-8’up

(stud: 600S162-54mil(33ksi))

Everything looks good.

We use 600S162-54mil(33ksi) as our field studs and chord studs.

Strap is good, no gap.

After test

Peak load:8708.3lbs

Displacement: 2.4182in.

Failure occur at vertical seam and OSB bottom, fasteners titled then pull through.

Failure is at one of 4x8 OSB on south side.

Fasteners at vertical seam on south side complete pull through,

3 fasteners at horizontal seam near vertical pull through

3 fasteners at the bottom near vertical seam pull through.

At the edge of  horizontal seam, OSB tear out.

Fasteners on south side field stud title, no damage.

Observe all the fasteners at the strap and bottom title.

Photo

 After test

 horizontal seam and vertical seam

 After test 

 Middle field stud

 Bottom of vertical seam

 Fasteners at the strap

Fasteners at middle field stud