Question

In: Civil Engineering

A wall footing is to support a 400 mm wide reinforced concrete wall with a dead...

  1. 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:
  1. Width and depth of footing
  2. Spacing of 20 mm diameter main bars and 12 mm diameter longitudinal temperature and shrinkage steel
  3. The development length required if bar location, coating, and size factors are all 1.0. Use normal weight concrete

Solutions

Expert Solution


Related Solutions

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 sulfur content in the soil. fy = 420MPa and fc′ = 21MPa, normal- weight...
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)
Design a square concrete column footing to support a 400-mm x 400-mm reinforced concrete column. The...
Design a square concrete column footing to support a 400-mm x 400-mm reinforced concrete column. The center of the column and footing must coincide. Loads: ???=350 ??, ???=480 ??, ???=100 ??−?, ???=130 ??−? Column Design Criteria: ??′=28 ???, ??=400??? Footing Design Criteria: ??′=28 ???, ??=400???, ??=180 ???,??=1.70 ?, ??=16 ??/?3,??=24 ??/?3, ??=25 ??, assume a thickness of the footing of 700 mm.
Design a square concrete column footing to support a 500-mm x 500-mm reinforced concrete column. The...
Design a square concrete column footing to support a 500-mm x 500-mm reinforced concrete column. The center of the column and footing must coincide. Loads: ???=350 ??, ???=480 ??, ???=100 ??−?, ???=130 ??−? Column Design Criteria: ??′=28 ???, ??=400??? Footing Design Criteria: ??′=28 ???, ??=400???, ??=175 ???,??=1.50 ?, ??=16 ??/?3,??=24 ??/?3, ??=20 ??, assume a thickness of the footing of 500 mm.
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 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 2.8 m wide reinforced concrete strip footing is situated at 2.5 m below ground level...
A 2.8 m wide reinforced concrete strip footing is situated at 2.5 m below ground level in a thick deposit of a saturated clay. The footing is loaded centrally, and the total vertical line load including the weight of the concrete and backfill is 308 kN/m. The clay has a bulk density (ρ) of 2250 kg/m3 and an undrained shear strength (cu) of 42 kPa. a) Calculate the factor of safety against bearing capacity failure considering the short term response...
A reinforced concrete bearing wall supports 12” wide beams bearing on the full width of the...
A reinforced concrete bearing wall supports 12” wide beams bearing on the full width of the wall spaced 10’ o.c. The bottom of the wall is a fixed connection. The top of the wall is a pinned connection. The wall is 20’ tall. The load from each beam, Pu, is 30 kips. Determine whether a 10” wide wall will work for this condition. Select vertical and horizontal reinforcing steel.
a reinforced concrete bearing wall supports a 12" wide beam bearing in the full width of...
a reinforced concrete bearing wall supports a 12" wide beam bearing in the full width of the wall spaced 10' o.c. . The bottom of the wall is a fixed connection. the top of the wall is a pinned connection. The wall is 20' tall. The load from each beam, Pu is 30 kips. Determine whether a 10" wall will work for this condition. select vertical and horizontal reinforcing steel.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT