What sort of actions could the company has undertaken to protect the 3rd party audit ? and What detail should you provide to OSHA when discussing the audit findings?

Q1. For the given velocity distribution in a pipe:

where v(r)=velocity at a distance r from the centerline of the pipe, V₀=centerline velocity, and R=radius of the pipe. Find the average velocity, energy and momentum correction factors.

1. (15 pts) List five different advantages of composite materials over conventional materials.
2. (15 pts) Calculate the modulus of elasticity of a fiber-reinforced polymer composite under isostrain condition if the composite consists of 35% fibers and 65% polymer by volume. Also, calculate the percentage of load carried by the fibers. The modulus of elasticity of the fibers and the polymer are 345 GPa and 3.5 GPa, respectively .
3. (20 Pts) A fiberglass composite consists of epoxy matrix reinforced with randomly oriented and uniformly distributed E-glass fibers. The modulus of elasticity of the glass fibers and the epoxy are 70 GPa and 6 GPa, respectively. Calculate the modulus of elasticity of the fiberglass if the volume percentage of fibers is (a) 25%, (b) 50%, and (c) 75%. Plot a graph showing the relationship between the modulus of elasticity of the fiberglass and the percent of fibers. Comment on the effect of the percent of glass fibers on the modulus of elasticity of fiberglass.
4. (30 pts) A short reinforced concrete column is subjected to a 1000 kN axial compressive load. The moduli of elasticity of plain concrete and steel are 25 GPa and 207 GPa, respectively, and the cross-sectional area of steel is 2% of that of the reinforced concrete. Considering the column as a structural member made of a composite material and subjected to load parallel to the steel rebars, calculate the following:

a. the modulus of elasticity of the reinforced concrete

b. the load carried by each of the steel and plain concrete

c. the minimum required cross-sectional area of the column given that the allowable compressive stress of plain concrete is 20 MPa and that the allowable compressive stress of plain concrete will be reached before that of steel.

d. Plot the stress-strain behavior for the steel fiber, concrete and composite on the same plot.

5. You are planning a water supply scheme in an area where you have both surface and sub-surface water resources. Disucss the factors which you will take into account to seclect one of the soruces for your scheme/project.

Two fuel storage tanks will be placed at an oil refinery near Bakersfield. The tanks are 10 m in diameter, are spaced center-to-center at 15 m, and contain fuel that has a Gs=0.95. The height of the fuel in the tanks is 4 m. Determine the stress change in the soil below the tanks at 4 locations: a) beneath the centerline between the tanks, b) beneath the edge closest to the other tank, c) beneath the center of one tank, and d) beneath the far edge of the tank. These calculation need to be carried out for a depth of 10 m. Assume the base of the tanks rests on the ground surface (no embedment), that the water table is very deep, and the unit weight is 18 kN/m3 .

A crossing track was constructed over a water channel with a total length of 1700 m and width of 40 m. If you know that the maximum flow that can be carried by the water channel is 400 m3/s over a 25-year storm event. Calculate:

a. The probability that the crossing track will flood next year.

b. The probability that the crossing track will flood at least once in the next 12 years.

c. The probability that the crossing track will not flood in the next 12 years.

d. The probability that the crossing track will flood exactly 5 times in the next 12 years. e. The probability that the crossing track will flood at least three times in the next 250 years.

A single-storey brick veneer house (single layer of brick on a timber frame) has a front corner lounge-room with a floorplan measuring 4.0 m by 3.8 m. The ceiling is 3.0 m high. The building fabric of the two exterior walls comprises a 12 mm thick layer of plaster, a 100 mm air gap and the exterior house bricks (110 mm thick). One of these walls has a window measuring 2.7 m wide by 1.35 m high, featuring a 3-mm thick glass pane installed in the mid-1950s. The floor is carpet over 19 mm thick pine floorboards, and the house is on stumps with a ventilated air gap between the ground and the floorboards. The ceiling is 12 mm plasterboard covered with a 50 mm thick layer of loose fill insulation in the roof cavity. This house is located in suburban Melbourne.

Estimate the cost to heat the interior of this room to 21°C all year round using a mid-level residential gas central heating system. Assume the under-floor and roof cavity temperatures are equal to the outside temperature.

A building company has been awarded the contract to undertake the construction works for a multi-storey office project in a city centre location. A deep basement is to be installed under one half of the building, within a layer of dense gravel.

The site is surrounded by public roads and buildings on all sides and it is expected that the water table is extremely close to the ground surface on a year-round basis.

You have been asked by the contractor to advise their company with regard to a number of issues on the project, in advance of the construction works.

1. (a) What details would you provide to the contractor in relation to the options and methods available to dewater the soil on the project, to facilitate both the basement construction and trench excavations for utility ducting installation on the site? How would the range of dewatering methods be combined to produce a suitable solution?

2. (b) Given the basic information available in relation to the location and ground conditions on this site, describe the particular options that you would recommend to the contractor for use on this specific site to assist in supporting the sides of the deep excavations during the basement construction.

Procedure in lab work (without explanation) with formula to find the given properties of fluid:

1.Density, ρ         

2.Specific Density, γ

3.Specific Gravity, sg

4.Dynamic Viscosity, μ

5.Kinematic Viscosity, η

Assessment 9.0: Soil Mechanics Produce a 300 word report which identifies the cause and effect of slips in embankments and cuttings and the affect it might have on safety of the line. The report should include the theory behind soil mechanics – soil saturation, subsidence, inappropriate mineral extraction, overloading of embankment by neighbouring construction and subterranean fires. Include a range of potential solutions to embankment stability risks.

Would prefer in Text as don't understand the handwriting on here.

1. Design a simply supported slab resting on masonry walls of thickness 250mm
each with its opposite edges supported (L = 4.75m). Take concrete grade
32MPa; steel grade 500N; permanent load (G) = 1.5kPa; imposed load (Q) =
2kPa; ψs = 0.7 & ψl
= 0.4; γconc = 25kN/m3
; ∆=span/500 (HOMEWORK)

The soil profile at a site consists of a clay layer 10 m thick, sandwich between two sand layers. The top sand layer has a density of 1.9 Mg/m3 and is 5 m thick. Below this layer is a 10 m thick clay layer with a saturated density of 1.8 Mg/m3 and a saturated water content 42%. The deeper sand layer has a saturated density of 1.9 Mg/m3 and extend to the depth investigated at the site. The water table was detected at the top of the clay layer.

The results of a consolidation test performed on a sample recovered from the mid point of the clay layer indicated the following properties for the clay:

Effective pre-consolidation pressure of 130 kPa;

Compression index Cc = 0.40;

Re-compression index Cr = 0.03; and

Consolidation coefficient Cv = 0.544 * 10-2 cm2/sec.

The site is being proposed to be graded by compacting an additional layer.

The new compacted layer will impose a total stress increment of 75 kPa on the present ground surface. It is desired to obtain the following information:

Estimate the ultimate consolidation settlement due to grading;

Estimate the time in weeks that it will take to reach the average degree of consolidation Uave = 90%; and

At the time calculated in 2.), estimate the excess pore pressure still present at the mid-point of the clay layer.

The soil profile at a site consists of a clay layer 10 m thick, sandwich between two sand layers. The top sand layer has a density of 1.9 Mg/m³ and is 5 m thick. Below this layer is a 10 m thick clay layer with a saturated density of 1.8 Mg/m³ and a saturated water content 42%. The deeper sand layer has a saturated density of 1.9 Mg/m³ and extend to the depth investigated at the site. The water table was detected at the top of the clay layer.

         The results of a consolidation test performed on a sample recovered from the mid point of the clay layer indicated the following properties for the clay:

1. Effective pre-consolidation pressure of 130 kPa;
2. Compression index C_c = 0.40;
3. Re-compression index C_r = 0.03; and
4. Consolidation coefficient C_v = 0.544 * 10^-2 cm²/sec.

The site is being proposed to be graded by compacting an additional layer.

The new compacted layer will impose a total stress increment of 75 kPa on the present ground surface. It is desired to obtain the following information:

1. Estimate the ultimate consolidation settlement due to grading;
2. Estimate the time in weeks that it will take to reach the average degree of consolidation U_ave= 90%; and
3. At the time calculated in 2.), estimate the excess pore pressure still present at the mid-point of the clay layer.

1. A 3.5 m clear span singly reinforced cantilever beam has a rectangular section of b=300mm and D=500
mm is reinforced with 2 bars of 32 mm diameter and 1 bar of 25mm diameter in the tension zone. The
live load taken by the beam is 19 kN/m. Check if the beam is safe to carry the above load . Use M25
and Fe500.