Shear tends to be critical with short span beams and bending

Shear tends to be critical with short span beams and bending for long span. 2. Shear stress for steel beams would he distributed over the area of the fingers. 3. The most economical wood beam is one with least depth. 4. Span of timber beams supported on hangers would be center-lines to center-line of support. 5. The strength of wood is closely related to its density. 6. If the axial load applied to a column exceeds the allowable, you could increase the cross-sectional area, increase allowable stress or decrease the load. 7. W-shapes are very efficient for bending applications as the wide flange and relatively thinner web provide better moment of inertia-to-weight ratios. 8. Lateral support should be considered in beam design to support the tendency to buckle sideways. 9. For an axially loaded structural member (column) as the load increases, the area will also increase. 10. If structural depth is limited to 2\'-4\", you could use a 30 K7 steel joist. Answer the following: 1. Which of the following beam section moduli would be the most economical? Circle your choice. 146 150 153 147 2. If the you were designing (for example: 16\' span, uniformly distributed load) met the allowable bending and shear stress but not the deflection, what options would you have and why?

Solution

1.T

2. F

3. F

4. F

5. F

6. T

7. T

8. T

9 , T

10 T

1)150

2. INCREASE SUPPORT REACTION BETWEEN SPAN