Aim:
To determine the ultimate capacity of nailed and bolted connections and the modes at which they fail. The experimental results will be compared to the estimates predicted using AS 1720 - 1998.
Equipment:
Timber member (with nails or bolts connection)
Scale
Ruler
Loading frame
3 Dial gauge
Electronic readout
Load cell
Method:
See Lab notes
Measurements
See next page
10 Tone actuator
A = 1450 mm2
Span = 2 m
Results
Nails
Load (psi) Load
(kN) Deflection 1
(mm) Diff Defl
1
(mm) Deflection 2
(mm) Diff Defl
2
(mm) Deflection 3
(mm) Diff Defl
3
(mm) Average (1 & 3) (mm) Moment (kNm) D
(mm) R
(mm) Curvature (mm)
0 0.00 48.86 0.00 96.56 0.00 47.50 0.00 0 0.00 0.00 0.00 0.00
200 2.00 48.39 0.47 96.11 0.45 46.94 0.56 0.515 0.50 0.06 1923076.96 5.2E-07
400 4.00 47.48 1.38 94.61 1.95 45.93 1.57 1.475 1.00 0.48 263158.13 3.8E-06
600 6.00
S Load Cell
English: The mode shapes of a cantilevered I-beam:...
English: Bolted joint LDEF: Discoloration-Earth En...46.64 2.22 93.22 3.34 44.98 2.52 2.37 1.50 0.97 128866.46 7.75997E-06
800 8.00 45.82 3.04 91.94 4.62 44.16 3.34 3.19 2.00 1.43 87413.30 1.14399E-05
1000 10.00 45.01 3.85 90.69 5.87 43.39 4.11 3.98 2.50 1.89 66138.51 1.51198E-05
1200 12.00 44.16 4.70 89.37 7.19 42.61 4.89 4.795 3.00 2.40 52193.26 1.91596E-05
1400 14.00 43.29 5.57 87.99 8.57 41.83 5.67 5.62 3.50 2.95 42374.36 2.35992E-05
1600 16.00 42.23 6.63 86.20 10.36 40.82 6.68 6.655 4.00 3.71 33740.04 2.96384E-05
1800 18.00 40.97 7.89 84.04 12.52 39.66 7.84 7.865 4.50 4.65 26855.17 3.72368E-05
2000 20.00 39.18 9.68 80.85 15.71 38.01 9.49 9.585 5.00 6.13 20411.23 4.89926E-05
2200 22.00 37.49 11.37 77.90 18.66 36.42 11.08 11.225 5.50 7.44 16816.09 5.94669E-05
2400 23.99 34.98 13.88 74.50 22.06 33.87 13.63 13.755 6.00 8.31 15055.33 6.64217E-05
2600 25.99 32.98 15.88 72.29 24.27 31.90 15.60 15.74 6.50 8.53 14658.43 6.82201E-05
2800 27.99 31.02 17.84 70.42 26.14 30.01 17.49 17.665...