Let us suppose that some article investigated the probability of
corrosion of steel reinforcement in concrete structures. It is
estimated that the probability of corrosion is 0.19 under specific
values of half-cell potential and concrete resistivity. The risk of
corrosion in five independent grids of a building with these values
of half-cell potential and concrete resistivity. Let the random
variable X denote number of grids with corrosion in this building.
Determine the cumulative distribution function for the random
variable X....
Design and draw the final cross section of a one-way
reinforced
concrete slab for the inside of a building, where the span is l
=3,6 m, and the applied live load is
LL = 7,02 KN m2 ⁄ . Normal-weight aggregate concrete is
specified with a density of 23. 5 KN m3 ⁄(reinforcement weight is
included). Use the largest of claculated steel ratio ρ and
0.75ρmax.
Assume:
Es = 2 × 105 MPa, fc′ = 28 MPa and fy =...
You need to develop a preliminary estimate for a 5” thick, Heavy
Industrial, Reinforced Concrete Slab on Grade. What are the
costs/SF for material, installation, and total for this slab on
grade construction? What is the total cost if the slab on grade is
80,000 SF?
Using ACI codes.
Design a simply supported one-way reinforcement concrete floor
slab with a dimension of 10 ft x10 ft.
Dead load = 2620 lb
Live load= 28000 lb
Use f'c = 3000 psi and fy = 60,000 psi.
Reinforcement is number 8.
a) Design a one wat slab using ACI code with Reinforcement and
the distance of steel bars from one another.
b) Design a slab without reinforcement with minimum
thickness.
Compare the load, concrete slab and a reinforced...
Design a simply supported one-way reinforced concrete floor
slab to span 10 ft and carry a service live load of 175 psf and a
service dead load of 25 psf (the dead load does not include the
self-weight of the slab).
Use f’c = 3000 psi and Fy = 60,000 psi. Make the slab
thickness to 1/2-in. increments.
Design a reinforced concrete wall footing to carry a 10 in thick
reinforced concrete wall. Service loads are 6 kips/ft dead load and
15 kips/ft live load. The allowable soil pressure is 2 tons per sf.
Assume that the bottom of the footing is to be 8.5 feet below grade
and the weight of the soil can be assume to be 110 PCF. Assume that
the steel is uncoated and the soil pressuregiven is gross allowable
soil pressure. Use fy...