Skip to main content

Cantilevered beam


The bending moment in a cantilevered beam is negative. Which of the following statements are true?
A. the top fibers are in compression
B. the bottom fibers are in compression
C. rebar placement should be either at the top or the bottom
D. gravity loads are not a factor for negative moment
AnswerB. the bottom fibers are in compression in a cantilevered beam, so top fibers are in tension which requires rebar placement at the top to resist tension.

ARE 4.0 exam prep: SS

Comments

Post a Comment

Try These Too!

Calculate Luminance

A typical 60-watt standard frosted incandescent bulb outputs 890 lumens for an efficacy ratio of about 15 lumens per watt. As an A19, its shape is spherical. What is the its calculated luminance? A. 25,115 cd/in² B. 25.115 cd/ft² C. 25,115 cd/m² D. Indeterminate, missing variable. Answer If 1 candela (cd) = 4 ∏ lumens (lm), 890 x 1cd/4∏ = 71 cd, A19 = 19/8 = 2.375 in or 60mm diameter (= 30mm radius), L = intensity / projected area, 71 cd / ∏ r² = 71/ 3.14 x (.03m)² = 25,115 cd/m² ARE 4.0 exam prep: BS
Post a Comment
See the answer »

Characteristics of form

Which example illustrates a regular ordering of elements producing RHYTHM? A B C D Answer Answer is C. A = proportion, B = symmetry, D = balance ARE 4.0 exam prep: PPP
Post a Comment
See the answer »

Refrigeration cycle

A water cooled liquid chiller (photo) performs which function in the refrigeration cycle for HVAC systems? A. thermal expansion valve, reducing pressure from the refrigerant's liquid state B. condenser cooling hot refrigerant with ambient air C. heat exchanger for liquid to cool air or equipment D. removes heat from liquid by vapor-compression or absorption refrigeration Answer D. removes heat from liquid by vapor-compression or absorption refrigeration. Industrial chillers may combine the chiller unit, condenser, pump station and expansion valve into a packaged unit. ARE 4.0 exam prep: BS
Post a Comment
See the answer »