Design a RC wall of 4.6m height to support a factored load of
650 KN/m and...
Design a RC wall of 4.6m height to support a factored load of
650 KN/m and factored moment of 30 KNm at right angles to the
length of wall. The distance between cross wall is 4m. Sketch the
reinforcement details.
A 450 mm × 650 mm column supports factored axial load of 2500 kN
centered in single footing. After assuming the depth and density of
soil above footing, assume the required depth of footing [10
marks].
a) Check depth due to two-way shear
b) Check depth due to one-way shear action
c) Calculate the bending moment and steel reinforcement
e) Determine development length of dowels
d) Check bearing stress
e) Determine development length of dowels
From load analysis, the following are the factored design forces
result: Mu = 440 KN-m, Vu = 280 KN. The beam has a width of 400 mm
and a total depth of 500 mm. Use f’c = 20.7 MPa, fy for shear
reinforcement is 275 MPa, fy for main bars is 415 MPa, concrete
cover to the centroid of the bars both in tension and compression
is 65 mm, steel ratio at balanced condition is 0.02, lateral ties
are 12...
A simply supported flanged beam subjected to a factored load of
60 kN/m (including dead load and live load). The beam has an
overall depth of 600 mm including slab thickness of 100 mm. The
width of the beam is 230 mm, effective span of the beam is 6.25 m
and effective cover to the tension reinforcement is 50 mm. Assume
M25 grade concrete and Fe415 steel. Check whether the beam needs to
be designed as singly reinforced or doubly...
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 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 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 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
Q1. The short tied column is to be used to support the following
factored load and moment: P= 1250 kN and M= 250 kN.m [10 marks].
fc=28 MPa fy=420 MPa
a) Determine required dimensions and reinforcing bars using
appropriate ACI column approach [2 marks].
b) Determine maximum ACI design axial load strength for selected
column [2 marks].
c) Determine balanced failure point on axial moment interaction
diagram [2 marks].
d) Determine the tie size and spacing [2 marks].
e) Draw...
What is the maximum tension (kN) on a cable carrying 2.5 kN/m
uniform load if the lowest point of the cable is 40m and 3m away
from the one of the support along the horizontal and vertical
direction respectively? Round off to 3 decimal places.
Design a circular column, using approximate methods, for a
factored load of 80 Kips and a
factored moment of 40 Kip-ft. about x and y axes each. The diameter
of column is 18".
Material strengths are fc' = 4Ksi and fy = 60Ksi. Use appropriate
column interaction diagram.