Question

Design a square tied column with DL = 500 KN, LL = 650 KN, fc’ =
20.7 MPa, fy = 276 MPa. Use ?? = 0.03, 25 ?? ∅ ???? ????, ??? 10 ??
∅ tied.

USE 1.2 DL + 1.6 LL

USD AND WSD.

Answer #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

Design a square axially loaded short square tied column for
concentric ultimate axial load Pu = 2600 kN. f’c = 28 MPa and fy =
350 MPa. assume ρ = 0.02.
Draw the section details showing dimensions, cover, rebars,
stirrups (ties), ..etc.

A
500mm width square tied column with reinforcement on four faceshas
a gross steel ratio is 0.02 and the concrete cover from the column
surface to the steel centroid is 100 mm.
what is the nominal axial capacity of the column if subjected
to biaxial bending where ex=ey=250 mm? use fy'=21 Mpa and fy= 415
Mpa, reciprocal load method and interaction diagram below.

A reinforced concrete square column (0.26m × 0.26m) is
supported by a square isolated footing (spread footing). The
footing is of plain concrete, and concentrically loaded. An
engineer has suggested 1.25m × 1.25m footing. First, check the
sufficiency of footing dimension. If it is not sufficient, design
the footing in accordance with the requirements of ACI 318M-08 and
using the following available data:
Net allowable soil pressure: net qa = 170 kPa
Column loads (unfactored): D = 160 kN L...

Design the shown beam; if it is given that
Dead load, wd = 15 kN/m
Live load, wL = 10 kN/m
Beam breadth b = 300 mm
Beam height, h = ℓ/21 mm
where; Span, ℓ = 9; and S
is the student serial number according to the following table. Use;
fc = 35 Mpa and fy = 420
Mpa.

A square-shaped spread footing with plan dimensions of 3m x 3m
is supporting a 500mm square concrete interior column. The column
carries a total factored load of 2850 kN. Use 25M bars Clear
cover=75mm fc’ = 25 MPa fy = 400 MPa
a) Determine the factored bearing pressure, qf, acting on the
soil due to the factored load, Pf=2850kN
b) Design the footing thickness based on two-way (punching)
shear requirements (Assume single shear will be satisfied). Assume
that the factored...

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