A simply supported beam has a span of āLā and a uniformly distributed load of āwā. What is the value of the reactions at the support?
1/2 wL
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15
What force is required to punch a 20-mm-diameter hole in a plate that is 25 mm thick? The shear strength is 350 MN/m^2.
P = 350 [pi (20) (25)] = 549.8 kN
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10
How many bd-ft is in a piece of lumber with a cross-section of 2āx4ā if its length is 216 in?
bd ft = [(2 x 4) (216 x 1/12)]/12 = 12
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10
The minimum space requirement for weaners (up to 10 kg weight) is 0.11 square meter per animal. How many pigs of this category can be confined in a 2m by 1.5m pen?
(2x1.5)/0.11=27.3 =27
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5
One of the most commonly used building material in many parts of the world because of its reasonable cost, ease of working, attractive appearance and adequate life if protected from moisture and insects.
Wood
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10
Engr. X & Engr. Y were asked by Dean Santos to design 5 pcs. of benches. The engineers found out that they needed 10 pcs. of 2"x3"x12' and 6 pcs. of 2"x2"x12 for each bench. How many board feet of lumber would they need per piece of bench?
An inclined or horizontal member that establishes the upper edge of a truss. This member is subjected to compressive and bending stresses. A. king post B. bottom chord C. top chord D. webs
C. Top chord
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15
A hollow steel tube with an inside diameter of 100 mm must carry a tensile load of 400 kN. Determine the outside diameter in mm of the tube if the stress is limited to 120 MN/m^2.
119.35 mm
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5
Sheet metal that is thicker than gauge 22. A. gauge 24 B. gauge 26 C. gauge 14 D. both a and b
C. gauge 14
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10
A wooden post with a cross-section of 200mmX100mm has a length of 2,500mm. What is the slenderness ratio?
Slenderness ratio = effective length/least radius = 2500mm/100mm = 25
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5
A load which tends to shorten or crush a structural member. A. compression B. shear C. tension D. bending
A. compression
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10
If 12.5 square meters of space is needed for every 100 heads of chickens more than 4 weeks old, what should be the length of a 10 m wide poultry house to accommodate 10,000 heads of such animals?