Foundation Design using SAFE

• To Analyze and designthe isolated footing from week 11 challenge on SAFE
• To verify the size, depth and steel provided as per calculations.
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AIM:To design the pile cap on safe and to evaluate pile group to be used, depth of the pile cap, longitudinal steel on top and bottom face in both directions.

unfactored load = 1175KN

dead load breakup = 1175/2 = 587.5 KN

Live load breakup = 1175/2 = 587.2

Point spring of pile = A X E / L

= 196349 X 25000/ 16000 = 306796 KN

k for SAFE analysis = 306.8 KN/m

Rebar yeild strength (FY) = 500N/mm^2

rebar ultimate strength = 575 N/mm^2

Elastic modulus of M25 concrete = 25000N/mm^2

number of piles required = unfactored load with self weight addition / indivisual pile capacity

= 1175 X 1.1/200 = 6.5

consider 8 piles

take center to center distance between piles = 3 X piles diameter = (1500 mm)

Edge distance from pile center = 1 X pile dimeter = (500mm)

Assume pile cap depth = 500mm

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PUNCHING SHEAR CAPACITY RATIOS

incase of punching shear all values are less than 1, hence safe