Question

A concrete beam similar to that shown in Figure 13.18 sustains a uniform live load of 1.5 klf and a uniform dead load of 1 klf on a span of 20ft. Determine the layout for a set of No. 3 U-stirrups using the stress method with fy = 40 ksi and f ′ c = 3000 psi. The beam section dimensions are b = 10 in. and d = 23 in.

Answer #1

Determine the layout for a set of No. 3 U-stirrups for a
beam with the same data as Problem 13.6.A, except the uniform live
load is
0.75 klf and the uniform dead load is 0.5 klf.
13.6A INFO
A concrete beam similar to that shown in Figure 13.18
sustains
a uniform live load of 1.5 klf and a uniform dead load of 1 klf on
a span
of 24 ft. Determine the layout for a set of No. 3 U-stirrups...

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 rectangular, tension-reinforced beam is to be designed for
dead load of 500 lb/ft plus
self-weight and service live load of 1200 lb/ft, with a 22 ft
simple span. Material strengths will be fy =
60 ksi and fc・= 3 ksi for steel and concrete, respectively. The
total beam depth must not exceed 16
in. Calculate the required beam width and tensile steel
requirement, using a reinforcement
ratio of 0.60 ρ0.005 . Use ACI load factors and strength reduction
factors....

for
an equal-span, uniform-section continuous beam over many supports,
compute and show diagrams for live load coefficients in terms of
wL^2 for maximum positive moments at (a) the exterior (b) the first
interior span (c) a typical interior span. Recommend live load
coeddicients.

Design a rectangular reinforced concrete beam for Mu = 550 k-ft
(not including self-weight). Use f’c = 4000 psi and fy = 60,000
psi. Use a design ρ = 0.01. Using the method of
bd2, and choosing a width b no smaller than 15
inches and no larger than 18 inches, design a beam to resist the
moment. Save room for #3 stirrups. Report your final design and
draw the cross-section labeling all dimensions and showing the
rebar layout and...

A
three-span continuous beam supports 6-inch thick one-way slabs that
span 20 ft center-to-center of beams. The beams have clear spans,
face-to-face of 16-in.-square columns, of 27, 30, and 27 ft. The
floor supports ceiling, ductwork, and lighting fixtures weighing a
total of 8 psf, ceramic floor tile weighing 16 psf, partitions
equivalent to a uniform dead load of 20 psf, and a live load of 100
psf. Design the beam, using f’c = 4500 psi and fy = 60...

a
rectangular beam having dimensions: b=300mm and d=550mm, spans 6m
face to face of simple supports. it is reinforced for flexure with
3D36mm bars that continue uninterrupted to the ends of the soan. it
is to carry a service dead load of 23.8 KN/m (including
self-weight) and a service lice load equal to 47.6 KN/m, both
uniformly distributed along the span. use fc’=27.6 Mpa and fy=414.7
Mpa. Normal weight concrete will be used and diameter of stirrup
are 10mm.
1.using...

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