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Compare and contrast the anticipated effects of
(a) stacking fault energy,
(b) grain size, and
(c) load ratio on the fatigue life predicted on the basis of the following three approaches to fatigue:
(i) stress-life,
(ii) strain-life, and
(iii) fracture mechanics
Use specific heat values at room temperature, and assume the room to be at 100 kPa and 15°C in the morning when she leaves.
question 1. a pipe is laid along one proposed footing 1st boundary with a depth of 5m. a uniform loading 100kpa is
The slabs are to be built integrally with the end supports, which are spandrel beams. fy = 60,000 psi, fc' = 4000psi normal-weight concrete. Clear spans are 15 feet, 18 feet and 15 feet. with the longitudal span of 38 feet.
problem 1. a single-storey factory is composed of a number of steel truss structures as shown in the following figure.
Standard air is drawn from the atmosphere into a 1.25 m diameter cylindrical duct by a fan mounted inside the duct. This air is discharged down stream from the fan through a 0.6 m diameter duct at a velocity of 25 m/s and atmosphere pressure.
The top of the object is 1 m below the surface of the fluid. What are the magnitude and direction of the hydrostatic force acting on the top of the object?
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.
Determine the force in each of these rods. Neglect axial compression and shear in the beam. For the beam, Ib = 200(106)mm4, and for each tie rod, A = 100mm2. Take E = 200 GPa.
Calculate the compacted cubic yards per hour if a compactor with a 5-ft drum width travels at 3 mph over a 10-in. lift of aggregate base course with 4 passes required to meet density specifications under average operating conditions.
A floor system consists of wide flange steel beams (W18 x 60) equally spaced at 8ft center to center. A 6inch reinforced concrete slab spans between beams. The bottom of the slab is coated with plaster and the top of the slab has ¾inch hardwood fl..
Evaporation rate in a 3650 acre-lake is 100 acre-ft/d. If inflow to the lake is 25.2 cfs, determine the change in storage (ft) during 365 days.
A 1.0-in-diameter hole is drilled on the centerline of a long, flat steel bar that is 1/2" thick and 4" wide. The bar is subjected to a tensile load of 30,000 lb. Calculate the average stress in the plane of the reduced cross section and the maxium t..
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