Reinforced Cement Concrete Homework Help

5. In Figure A, the fasten the steel column to the concrete pier./nVARIES 1/4 LEVELING PLATE 3/4" NON SHRINK GROUT FIN. FLOOR ELEV 100' 0" TOP OF FOOTING ELEV. VARIES SEE SCHEDULE 45 BARS 3 A-1 4 VARIES SEE SCHEDULE 31 STEEL COLUMN # CONCRETE SLAB W/ FIBER TEMPERATURE REINFORCING 6 MIL VAPOR BARRIER 4" STONE FILL COMPACT FILL 16"x15" CONC PIER 3/4 x16" A.B. DETAIL FIGURE A-Use this figure to answer questions 4 and 5. SCALE: 1/2-1-0"

2. Explain the difference between the following conditions: frost heave soils; swelling sõils; Collapsing soils

3. (20 points) A concrete floor system consists of parallel T beams spaced 10 feet on center (see sketch below)and span 32 feet between center points of columns. L-beams are used at the edges of the slabs. The 6 inch thick slab was poured monolithically with the beams that have a web width of 14 inches and a total depth (measured from the top of the slab to the bottom of the web) of 28 inches. Assume the effective depth "d" to be H - 3inches. In addition to it's own weight, each beam must carry an unfactored superimposed dead load of 50pounds per square foot and a live load of 225 pounds per square foot. The concrete compressive strength is 3ksi and the yield strength of steel is 60 ksi. Calculate As for the T-beams and the edge L-beams, select bars and check spacing, minimum steel requirements, equilibrium and if tension control.

a) Why should the effective structural capacity of an existing pavement earmarked forrehabilitation to extend its service life be evaluated? O The following expression is associated with the use of the Falling Weight Deflecto meter(FWD) on pavements earmarked for rehabilitation. d_{e}=\frac{1.5 p a}{M_{k}}\left\{\frac{1}{\left.\sqrt{1+\left(\frac{D}{a} \sqrt{\frac{E_{p}}{M_{k}}}\right.}\right)^{2}}+\frac{M_{R}}{E_{p}}\left[1-\frac{1}{\sqrt{1+\left(\frac{D}{a}\right)^{2}}}\right]\right\} What is the structural transformation required to make the use of the above expressionpossible? Which parameters in the expression relate to the transformation? Identify the parameters in the expression which are obtained from the FWD test and brieflydescribe how the setup of the test enables those parameters to be obtained. [You may useany relevant expression(s) or equation(s) to support your explanation.]

. A normal PCC has a compressive strength of 5000 psi at 28 days, estimate its modulus of rupture.

What is the purpose of value engineering? *Optimize resources to achieve the greatest value for the money being spent. *Make sure there are no errors in the design drawings. *Make sure that the contractors and subcontractors are qualified to do the job. *Make sure there are no errors in the construction contracts. *Make sure that the construction estimates are correct.

As a structural engineer, you have been requested by a client to check the performance requirements of 2 concrete mix designs, Mix A and Mix B. The tests will investigate both fresh and hardened concrete properties. The concrete Mix A and Mix B will be used for the construction of a residential building located in Sydney more than 20km from the coast. The fresh and hardened concrete properties tested are: 1) Workability 2) Air content of fresh concrete 3) Compressive Strength 4) Modulus of Elasticity (MOE) 5) Indirect Tensile Strength (splitting tensile strength)

A cantilever beam has a span of 10ft and is subjected to a uniformly distributed dead load(not including its self-weight) of 1 kip/ft and a live load of 1.5 kip/ft. In addition, the beam has a concentrated dead load of 40 kips located 7.5 feet from the fixed end. The beam has cross sectional dimensions of 12 in wide by 18 inches deep and concrete weighs 0.15 kip/ft^3. a) What is the moment that this beam should be designed for, in accordance with Chapter 5 of ACI 318-19? b) If the choice of material has not yet been made, and the owner of the structure that this belongs to requests that all beams behave elastically, what would you as a designer tell the owner about the necessary resistance of the material if the beam is not allowed to deflect more than 1 inch? i.e. what property (or properties) must the material have?

4.12. Determine the nominal moment capacity of the section in Fig. 4.1d using the reinforcement areas from Problem 4.4. fy = 60,000 psi.

1. On a proposed site plan for a building, the reference elevation is listed as 456"-3" in the notes. An elevation listed for the top of one side of a building is 112'-9". The actual elevation of the top of the building at that location is