Question
In: Civil Engineering
A 400 mm concrete wall supports a dead load of 280 KN/m and a live load...
A 400 mm concrete wall supports a dead load of 280 KN/m and a live load of 230 KN. The allowable bearing pressure is 230 KN/m2 and the level of the bottom of the footing is 1.5 m below the ground surface. Assume concrete weighs 24 KN/m3, that of soil is 15.74 KN/m3, fc’ = 20.7 Mpa, fy = 248 MPa,. Use 25 mm diameter reinforcing bars. Thickness of footing = 500 mm and concrete cover is 75 mm.
Calculate the :
(a) effective soil pressure
(b) width of wall footing
(c) spacing of bars at critical section
Solutions
Ally Wells answered 8 months agoRelated Solutions
A 400 mm concrete wall supports a dead load of 280 KN/m and a live load...
A 400 mm concrete wall supports a dead load of 280 KN/m and a
live load of 230 KN. The allowable bearing pressure is 230 KN/m2
and the level of the bottom of the footing is 1.5 m below the
ground surface. Assume concrete weighs 24 KN/m3, that of soil is
15.74 KN/m3, fc’ = 20.7 Mpa, fy = 248 MPa,. Use 25 mm diameter
reinforcing bars. Thickness of footing = 500 mm and concrete cover
is 75 mm. Calculate...
A 400 mm concrete wall supports a dead load of 280 KN/m and a live load...
A 400 mm concrete wall supports a dead load of 280 KN/m and
a live load of 230 KN. The allowable bearing pressure is 230 KN/m2
and the level of the bottom of the footing is 1.5 m below the
ground surface. Assume concrete weighs 24 KN/m3, that of soil is
15.74 KN/m3, fc’ = 20.7 Mpa, fy = 248 MPa,. Use 25 mm diameter
reinforcing bars. Thickness of footing = 500 mm and concrete cover
is 75 mm. Calculate...
A wall footing is to support a 400 mm wide reinforced concrete wall with a dead...
A wall footing is to support a 400 mm wide reinforced
concrete wall with a dead load of 270 KN/m and a live load of 210
KN/m. The bottom of the footing is 1.50 m below the final grade.
Assume the soil weighs 15.78 KN/m3 and the allowable soil pressure
is 190 Kpa. Use 75 mm as concrete cover, fc’ is 28 Mpa, fy is 415
Mpa, and concrete weights 23.5 KN/m3. Compute the:
Width and depth of footing
Spacing...
Design a plain concrete footing for a 400 mm reinforced concrete wall that supports a DL...
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)
A long footing supports a wall carrying a load of 260 kN per m. The soil...
A long footing supports a wall carrying a load of 260
kN per m. The soil at the
site is saturated clay having a undrained shear strength of 117
kPa. The unit
weight of the clay is 22 kN/m³ and it is suspected that
occasionally the water
table rises to the ground surface. What width in m (1 dp) of
footing should be
used if a minimum factor of safety of 2.4 is required? The footing
depth is 1.2 m
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Design a wall footing to support a 30cm − wide reinforced concrete wall with a dead...
Design a wall footing to support a 30cm − wide reinforced
concrete wall with a dead load DL =293 KN/m and a live load
LL = 218 KN/m. The bottom of the footing is to be 1. 2m below
the
final grade, the soil weighs 16 KN m3 ⁄ , the allowable soil
pressure, qa = 192 KN m2 ⁄ , and there is no appreciable
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