Skip to main content

Foundation Piles 2

Four 12 inch diameter piles (each of whose frictional capacity is 300 psf) support a column carrying 120 kips total load. How deep must each pile be to support the load?
A. 24 ft
B. 30 ft
C. 32 ft
D. 40ft


C. 32 ft is correct.
From the diameter of each pile (r/2 = 12/2 = 6 in = 0.5 ft) the circumference is (C = 2∏r = 2x3.142x0.5) 3.142. Dividing the required frictional area by the circumference of the circular piles equals the required depth (100sf / 3.142 = 31.83 ft or 32 ft)

Comments

Post a Comment

Try These Too!

Bidding process

If the Owner would like to change the designated bid opening date and time contained in the Instructions to Bidders for the Owner's convenience, what procedure must be used? Answer
Post a Comment
See the answer »

Fire evacuation

Which of the following statements best describes why exterior fire escapes are no longer recommended or usually permitted? A. Manufacturing has ceased production of these. B. Rising smoke from lower floors eliminates the safety of using them C. They cannot be securely attached to typical current construction D. They are difficult to maintain Answer B. is the correct answer. Smoke inhalation is as perilous as leaping flames. ARE 4.0 exam prep: BS
Post a Comment
See the answer »

Tensegrity

A type of structure whose integrity is derived from the balance between members in tension and in compression is Tensegrity . Compressive components connected by tensile components to other compressive components form a tensegrity structure. What architect-engineer-cosmologist coined this term? Answer
Post a Comment
See the answer »