I have a solid square aluminum beam. It is 12 inches long with cross sectional area .25" x .25". A force is applied to the center of the rod and supported at the ends. I need to know the maximum force before the aluminum fails. Equations and work done would be great so I can change the length and cross section if needed bigger or smaller max load.

A specimen of concrete column (200 x 200 mm) of 1.5 m long with 4 steel rebars (20 mm in diameter) inside with same length. If Ec = 21 Gpa, Es = 210 GPa, and free shrinkage strain = 0.0004, estimate the force carried by concrete and steel after shrinkage. If concrete tensile strength, ft = 5 MPa, will crack develop in this specimen?

Water at 70°F flows by gravity from a large reservoir at a high elevation to a smaller one through a 55-ft-long, 2-in-diameter cast iron piping system that includes four standard flanged elbows, a well-rounded entrance, a sharp-edged exit, and a fully open gate valve. Taking the free surface of the lower reservoir as the reference level, determine the elevation z1 of the higher reservoir for a flow rate of 10 ft3/min. The density and dynamic viscosity of water at 70°F are ρ = 62.30 lbm/ft3 and μ = 2.360 lbm/ft·h = 6.556 E–4 lbm/ft·s. The roughness of the cast iron pipe is ε = 0.00085 ft.

-The elevation z1 of the higher reservoir is ft.

(Please be accurate)

1. A concrete to concrete joint made in such a manner that the faces of the new and old concrete adhere sufficiently to prevent any relative movement across the joint; it creates some weakness in the concrete structure so care must be taken to where they are to be placed. These joints are called:

Select one:

a. Metal joint

b. Construction joint

c. Stop joint

2.

Piles may be made from all the following except one:

Select one:

a. Steel

b. Precast concrete

c. Brick

d. Timbe

3.

Reinforcing Steel is placed in the bottom of the footing to:

Select one:

a. Carry compression

b. Reduce shrinkage

c. Carry tension

d. Increase permeability

4.

The process of regularly spraying water or covering the concrete with moisture-retaining materials, or using chemical surface sealer in order to protect the exposed surfaces of newly poured concrete from evaporation and drying is known as:

Select one:

a. Consolidation

b. Hydration

c. Curing

d. Segregation

5.

A mat foundation placed at a depth such that the weight of the soil removed from the excavation is equal to the weight of the building above, so the stress in the soil beneath the building is the same after construction as it was before is known as:

Select one:

a. Pad (Spread) Footings

b. Strip Footings

c. Floating foundation

6.

When steel strands are tensioned before concrete is casted and requires heavy abutments to restrain the strands and is normally only done with concrete in precast plants, but not on the construction site is known as:

Select one:

a. Pre-tensioning

b. Post-tensioning

7.

When the column is located at or near a property line the following shallow foundation is used.

Select one:

a. Caissons

b. Combined footing or cantilever footing

c. Piles

d. Pad footings

write the simulation algorithm for Two lane one way traffic condition.(explain along with a flow chart).

Q (a)why steel formwork is preffered ? Explain with neat sketchs , the formwork for RCC beam.

(b) What is meant by Demolition ? What are the factors affecting the evaluation of Demolition methods ?

What are the engineering properties needed for stability of highway embankment and cut in clayey soils? Suggest the laboratory test program for their evaluation.

Density requirements of soils are critical to the QC/QA (quality control and quality assurance) of compacted borrows in the construction of earth structures, like earth dams and highway embankments.

a) How the density requirements can be established?

b) Give different methods for the field density check and explain how each works.

The average temperatures (°F) for an 8-day period are: 32,35,34,36,48,43,42, and 40. If the area has an initial SWE of 2.46 in, K=0.06in/deg-day, and a runoff coefficient of CR = 0.5, plot the estimated daily runoff (in) from the watershed and determine the total melt and runoff for the 8-day period.

6.28 Modified You are to determine if exposure by oral ingestion to the chemicals xylene, toluene, arsenic, and hexavalent chromium poses a noncarcinogenic health risk. The chemical-specific reference doses (mg/kg-day) obtained from IRIS are: xylene (0.2), toluene (0.8), arsenic (0.0003), and hexavalent chromium (0.003) Assume a 70 kg individual consumes 2 liters of water per day with these chemicals dissolved at a concentration of 1 mg/L. Determine the HQ for the water.

9) An existing rural freeway in level terrain is to be analyzed to determine LOS using the following information: number of lanes in each direction equals 2, peak hour volume of 2140 veh/h (in the peak direction), 15% trucks, 2% recreational vehicles, PHF = 0.90, lane width = 12 ft, lateral clearance = 10 ft, average interchange spacing is 3 mi.

A warehouse needs 3cfm in a control area. the controlled area is 25ft x 50ft. with a height of 20ft. how many cfm would be needed to reach the goal of 3cfm?

A CAT D7G power shift tracklaying dozer is used in a pushing operation. The dozer is equipped with a straight 7U blade. The material (dry and noncohesive) weighs 100 pcf in the bank state. It is estimated that the material will swell 4% from bank to loose state. The center-of-mass-to-center-ofmass pushing is 250 ft on a 0% grade. The operator will have excellent skill, the job will be performed in good conditions. Job efficiency can be assumed to be equivalent to a 45-min hour. Calculate the dozer hourly production in bcy.