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!

Vertical louvers

On which elevations of a building are vertical louvers generally more effective? Select 2 A. East B. South C. West D. North Answer A. East and C. West (answer applies for northern hemisphere) ARE 4.0 exam prep: SPD
Post a Comment
See the answer »

Friction loss

Friction loss or static head in sizing of air ducts is given in this expression of units: A. pounds per square inch B. inches of water per 100 feet C. inches of refrigerant per 100 feet D. inches of water per foot Answer B. inches of water per 100 feet ARE 4.0 exam prep: BS
Post a Comment
See the answer »

Joint ventures

Which AIA document series includes agreements for joint ventures? A. A-series B. B-series C. C-series D. D-series E. G-series Answer C. C-series covers architect/consultant documents including joint ventures.
Post a Comment
See the answer »