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1. Briefly describe the following wood products & their uses:
2. Explain the major safety hazards involved in erecting the roof trusses for a two-story frame building
3. Described how high-strength steel bolts may be identified
4. Briefly describe five (5) methods for determining the quality of welds in structural steel connections.
5. Describe how masonry units should be stored at a construction site
6. Why and how should masonry units be protected before the building roof is put in place?
a moisture content of 10.2 % and a specific gravity of solids of 2.65. Compute the unit weight, dry unit weight, degree of saturation, void ratio and porosity.
If metal sorption to algae can be modeled by a Langmuir isotherm, determine the mass distribution (sorbed vs dissolved) of lead in the marsh. Langmuir Isotherm Parameters Cs , sat 100 mg/g a 0.1 L/mg
The efficiency of the engines of subsonic airplanes depends on air pressure and usually is maximum near about 36,000 ft. Find the air pressure y(x) at this height. The rate of change y(x) is proportional to the pressure
A 5-m wide rectangular open channel lined with rubble masonry (n=0.025) and laid on a slope of 0.0004. If the depth of flow is 3 m, what is the rate of discharge (m3/s)
In a hydrometer test, the data recorded at 60 minutes after the start of the test are as follows: Gs = 2.6, temperature of water T = 24°C and L = 9.2 cm. What is the diameter D of the smallest-sized particles
Write the unit of measurement and unit of payment of following items. 1) Earthwork in excavation in foundation. 2) Framwork. 3) Steelwork in trusses. 4) Damp proof course D.P.C. 5) Cement.
A steel I beam is supported by a pin at point A and a rocker at B, and a cable applies a 2000lb force. The beam is uniform and weighs 26 lb/ft. Determine the support reactions.
A solution containing 30% methanol (by mol) is flashed to 1 bar, 70.82°C. Determine the phase of the system; if 2 phases, report the compositions and relative amounts of each phase.
A 25-ohm resistor at steady state draws a current of 10 amperes. Its temperature is 3 10 K; the temperature of the surroundings is 300 K. What is the total rate of entropy generation SG? What is its origin?
A ten-foot high wall will retain a medium dense sand backfill. Determine the Rankine earth pressure diagram and the total active force on the wall.
A 3-mm thick panel (1 m x 1 m) of aluminum alloy (k = 177 W/m. K, Cp = 875 J/kg. K, and p(rho)= 2770 kg/m3) is heated in a large oven with air at T = 175oC and a convective heat transfer coefficient of h = 40 W/m2.K.
An ideal Sterling cycle operates between thermal energy reservoirs at 27 degrees C and 527 degrees C. The maximum cycle pressure is 2000 kPa. Determine the net work produced each time this cycle is executed, and the cycle's thermal efficiency
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