Question

Design a simple-span one-way slab to carry a uniformly distributed live load of 450 psf. this is the only load to be supported other than the self weight of the slab. the span is 7-ft, center-to-center of the supports. Assume f'c = 4000 psi, fy = 60000 psi. Design per foot of width.

Answer #1

Design a one-way floor slab to carry a uniform live load of 500
psf on a simply supported span of 21 ft, given
fc’=4000 psi and
fy=50000 psi. Use the ACI 318 code. Keep the
reinforcement ratio at about 30% of the amount of balanced strain
condition so that deflection is unlikely to be excessive.

The project will include the design of One Way Slabs, Beams and
Columns.
Choose the largest room in your house/apartment and measure the
area. let's say (length 6m* width 4m) ( height 3m)
Steel yield stress (fy = 60000 psi)
Concrete ultimate compressive strength (f’c = 4000 psi)
Reinforced concrete density = 150 lb/ft3.
Normal weight concrete is used.
The slab is treated as a one way slab and subjected to a dead
load of 120 psf (excluding the self-weight...

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...

Select the lighest W section to carry a uniformly distributed
load of 0.2 kip/ft superimposed (i.e. in addition to the beam
weight) and 0.8 kip/ft live load. The simly supported span is 20'
and the compression flange is fully supported against lateral
movement. Use LRFD and select for the following steels: A36, A992,
and A572 Gr. 65

A simply supported beam spans 30 ft. and carries a uniformly
distributed dead load of 3.5 kip/ft,excluding the beam self-weight.
Also, in addition, a concentrated dead load of 15 kips and a
concentrated live load of 25kips, both act at the center of a 30 ft
span.Select the lightest-weight W-Shape to carry the load(A992
steel). Use LRFD method.

2. Design a reinforced concrete beam of 20 feet span carrying a
uniformly distributed load of 1200 lbs/ft. Use Fc = 3,000 psi and
steel stress of 20,000 psi and assume appropriate modulus of
elasticity and other required material properties.

A simply supported beam spans 20 ft and carries a uniformly
distributed dead load of 0.8 kips/ft including the beam self-weight
and a live load of 2.3 kips/ft. Determine the required plastic
section modulus and select the lightest weight Wshape to carry the
moment. Consider only the limit state of yielding (Zone 1) and use
A992 steel. Design by (a) LRFD and (b) ASD.

A simply supported beam spans 20 ft. and carries a uniformly
distributed load of 1 kip/ft,including the beam self-weight, and a
live load of 2.5kip/ft. Determine the minimum required plastic
section modulus and select the lightest-weight W-Shape to carry the
moment (A992 Steel). Use LRFD method.

analyse, design and report on a viable longitudinal span and
beam, suspend slab design and column slenderness.Design constraints
for this individual concrete beam include using simply supported
(fixed connected), non-continuous beam design and will not require
any pre stressed beam design based on AS3600-2009.
Support beams have a uniformly distributed imposed load of 15
kN/m
Density of RCC,ρ = 2600 kg/m3
Live Load on Slab = 4kN/m
Dead Load on Slab = 3kN/m
Yield Strength of...

A rectangular beam having b=300 mm and d=575 mm, spans 5.5 m
face to face of simple
supports. It is reinforced for flexure with 4φ32 bars that continue
uninterrupted to the ends of
the span. It is to carry a service dead load wD=30 kN/m (including
self-weight) and a service live
load =45 kN/m both uniformly distributed along the span. Design the
shear reinforcement using
φ10 vertical U stirrups. Use the equation (a) for Vc. Material
strengths are fc’=22 and...

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