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Design the formwork for an 8-in.-thick reinforced concrete floor slab. Use 3/4-in. class II plyform and No. 2 grade Douglas fir-larch for the other lumber. Use 2 × 8 joists and double 2 × 8 stringers. Use 4 × 4 shores with an unsupported height of 10 ft. Assume that the slab will be 120 ft × 120 ft in plan. Use guy wire bracing (at 45° to the 10-ft height) that has a tensile capacity of 4400 lb.
Two water jets in a horizontal plane collide and form one homogeneous jet as shown in Fig. Determine the elocity, V, and direction, θ, of the combined jet.
for a piece of material the steady-state flow across its thickness is 0.297 10-3 kgm2 h. if the concentration on the
a particle travels along a straight line such that in 2 s it moved from an initial position sa 0.5 m to a position sb
a 0.86 kg of saturated vapor steam contained within a piston-cylinder. initially the piston face is at x 0 and the
Assuming that the occupants' body heat provides a continuous source of 320 W within the igloo, calculate the inside air temperature when the outside air temperature is Too = -40 C. Be sure to consider heat losses through the floor of the igloo.
determine the instantaneous rate of heat transfer from a 1.5-cm-diameter ball bearing with a surface temperature of 150
a rigid container with volume 200 l is divided into two equal volumes by a partition. both sides contain nitrogen one
Also, compare with the efficiency of an Otto cycle operating with the same maximum pressure.
10 kg of refrigerant r-134a initially at 5 bar and 160 oc undergoes an isothermal internally reversible compression
the centerboard of a sailboat is 2.5m long and has a chord of 1m. approximate the centerboard as a flat plate in water
A section of Magnesium alloy is being tested .It is subjected to 12 kN compression force.The length is 50 mm.The cross section is 10 mm by 10 mm.The longitudinal strain is 1.5*10^-3. The poisson´s ratio for the material is 0.35
A compressor, having 80% efficiency, requires 25 MW power to pressurize air. Calculate the power requirement for the same inlet conditions and exit pressure if the compressor is made isentropic by redesigning it
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