Safe Dimensions of the Notch at a Joint of a Timber Truss
Situation
The truss shown in is made from timber Guijo 100 mm × 150 mm. The load on the truss is 20 kN. Neglect friction.
Compression parallel to grain = 11 MPa
Compression perpendicular to grain = 5 MPa
Shear parallel to grain = 1 MPa
1. Determine the minimum value of x in mm.
| A. 180 | C. 160 |
| B. 150 | D. 140 |
2. Determine the minimum value of y in mm.
| A. 34.9 | C. 13.2 |
| B. 26.8 | D. 19.5 |
3. Calculate the axial stress of member AC in MPa.
| A. 1.26 | C. 1.57 |
| B. 1.62 | D. 1.75 |