Engineering Report


TESTING
 INSPECTION
 ENGINEERING
2118 Rheem Drive, Pleasanton, CA 94588  Phone [phone]  Fax [phone]
4770 Duckhorn Drive, Sacramento, CA 95834  Phone [phone]  Fax [phone]
One Embarcadero Center, Suite 535, San Francisco, CA 94111  Phone [phone]  Fax [phone]
246 30
th
St., Suite 101, Oakland, CA 94601  Phone [phone]  Fax [phone]
CONSTRUCTION
TESTING SERVICES
Structural Test Configurations and Results
Tensile (Uplift)
Figure 3: Tensile Eccentric Load
Sample
Number
L
-
Foot
Rafter
Specific
Gravity
at
Moisture
Test
Rafter
Moisture
Content
[%]
Peak
Load
[lbs]
Deflection
at Peak
Load [in]
Failure Mode
1
Unirac
0.536
12.0
1233
3.0585
Bolt Track Fractured (Al Brittle)
2
Unirac
0.505
12.5
1358
2.4038
Post Crushing (Al Ductile) / Post Hub
Ruptured (Al Brittle)
3
Unirac
0.523
12.4
1508
3.0447
Steel Bolt Fractured (Steel Failure)
4
Unirac
0.513
12.7
989
2.9945
Bolt Track Fractured (Al Brittle)
5
Unirac
0.518
11.6
1396
2.9100
Post Hub Ruptured (Al Brittle)
6
Unirac
0.531
11.8
1572
3.3687
Steel Bolt Fractured (Steel Failure)
7
Unirac
0.565
11.9
1385
3.1210
Post Hub Ruptured (Al Brittle)
8
Unirac
0.503
11.0
1297
3.2010
Post Hub Ruptured (Al Brittle)
9
Unirac
0.528
12.2
1606
3.3925
Post Hub Ruptured (Al Brittle)
10
Unirac
0.531
12.3
1630
3.3555
Post Hub Ruptured (Al Brittle)
11
Unirac
0.422
11.9
1379
3.0522
Post Hub Ruptured (Al Brittle)
12
Unirac
0.504
11.0
1478
3.2952
Steel Bolt Fractured (Steel Failure)
Average
1403
Applied
Load