1. A round column is to be designed with DL = 600 KN, LL = 800
KN, fc’ = 20.7 MPa, fy = 345 MPa. Use ?? = 0.02, 25 ?? ∅ ???? ????,
??? 10 ?? ∅ ???. USE 1.2 DL + 1.6 LL USD AND WSD. provide
detailing
Design a square interior column footing for a 15-in. square tied
interior column that supports a dead load of 160 kips and live load
of 180 kips. The column is reinforced with eight # 8 bars, also,
the base of the footing is 6 ft below the grade line, the soil
weight is 100 lb/ft3, the concrete weight is 150 lb/ft3, f’c =
4,000 psi, fy = 60,000 psi and qa = 4 kip/ft2.
Design a plain concrete footing for a 400 mm reinforced concrete
wall that supports a DL = 185 KN/m and 95 KN/m live load. The base
of the footing is to be 1.2 m below the final grade. fc’ = 20.7 Mpa
and allowable soil pressure is 200 Kpa, weight of soil is 15.82
KN/m3.
(ACI)
QUESTIONS:
Design a square column footing for a 20-in. square
tied interior column that supports loads of DL (170) k and Live
load LL (210) k. The column is reinforced with eight No 8 bars, the
bottom of the footing is 5 foot below final grade, and the soil
weighs 100 lb. /ft3 the allowable soil pressure is 4 w ksf. The
concrete strength is 4,000 psi and the steel is Grade
60.
W1, W2 and X are given at the bottom.
Design a square column footing for a 18-in. square tied interior
column that supports loads of DL (W1) k and Live load LL (W2)
k.
The column is reinforced with eight No 8 bars, the bottom of the
footing is 5 foot below final grade, and the soil weighs 100 lb
/ft3 the allowable soil pressure is w ksf.
The concrete strength is 4,000 psi and the steel is Grade
60....
Design for britishcode 8110
Design a square pad footing for a 300 mm square column
supporting a factored axial load of 800 kN. Safe bearing capacity
of soil is 200 kN/m2, fcu=20
N/mm2, fy=415 N/mm2.Design a
square pad footing for a 300 mm square column supporting a factored
axial load of 800 kN. Safe bearing capacity of soil is 200
kN/m2, fcu=20 N/mm2,
fy=415 N/mm2.
15. A concrete footing, exerting an applied pressure of 200
kPa on the soil, may fail from bearing capacity (B) or excessive
settlement (S). Due to soil variation, the following are
given:
• Bearing capacity is normally distributed with mean, μ=500
kPa and standard deviation, σ = 200 kPa
• Settlement is log-normally distributed with μ=1.5 cm and σ
=0.3 cm.
• The probability that the footing fails in bearing capacity
knowing that it had settled excessively is 0.2
•...