#6 Plywood of a certain grade and thickness is oriented so that the grain in the

Question

#6  

Plywood of a certain grade and thickness is oriented so that the grain in the outer plies is perpendicular to the supporting members. If the plywood were oriented instead to that the grain were parallel to the supporting members, the effective rigidity of the plywood would be

(A)

reduced by more than half

(B)

reduced by 20%

(C)

unchanged

(D)

doubled

#8  

The percent of sulfur that would be present if it were used to cross-link at every possible point in polyethylene is

(A)

12%

(B)

28%

(C)

46%

(D)

53%

#9  

The temperature of structural steel is increased from ambient to 800°F. The effect of this on the steel's tensile strength is

(A)

negligible

(B)

to reduce it by about 25%

(C)

to reduce it by about 50%

(D)

to reduce it by nearly 100%

#10  

What is most nearly the maximum force per inch of weld for the connection shown?

(A)

2.7 kips/in

(B)

3.4 kips/in

(C)

4.2 kips/in

(D)

5.1 kips/in

Explanation / Answer

6) D Doubled. When arranged parallell

8) C sulphur percentage is 46%

9) A negligible

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