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Two 10 mm thick steel plates are fastened together by means of two 20mm bolts that fit tightly into the holes. if the joint transmits a tensile force of 45 kn
determine
a.) the average normal stress in the plates at a section where no holes occur
b.) the average normal stress at the critical section
c.) average shearing stress in the bolts
d.) average bearing stress between the bolts and the plates
the cash flow sequence $70+4k, where k is in years and cash flow is in $1000. What is the future work of the entire cash flow series in year 10 at 10% per year
Deteemine the velocity of the 30 kg block A if the two blocks are released from rest and the 20 kg block B Moves 0.6 mup the incline .The coefficient of kinetic friction between both blocks and the inclined planes is 0.10
Now 300 kJ of heat is transferred to the refrigerant at constant pressure while 110-V source supplies current to a resistor within the cylinder for 6 min. Determine the current supplied if the final temperature is 70 degrees C.
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent. The actual gravimetric air-fuel ratio in the furnace is calculated to be 12 kg air/kg fuel.
if D has a mass of 600 kg, determine the required mass of C, the maximum sag h of the cable, and the length of the cable between the pulleys A and B. The Beam has a mass per unit length of 50 kg/m.
A uniform crate weighing 15.0 kN is lifted by a sling, ABC, a small pulley and cable BD. If the tension in the sling is limited to 9.0 kN, determine the minimum length of the sling. Neglect the radius of the pulley.
What criteria are used in the selection of personnel for the demonstration of maintenance tasks? Define the criteria for the selection of test and support equipment.
Determine total delay, maximum queue length, and the time that the 20th vehicle to arrive waits from its arrival to its departure.
In a short section of a channel carrying a steady discharge of 36 m^3/s, the depth is seen to increase from 1.6 m to 1.75 m. The channel is rectangular, 20 m wide with a bedslope of 0.0002 and Manning n of 0.014.
A simply supported beam with a pin support at A and a roller support at B with length L=20 ft has a force P=10 kips applied at x=15 ft from point A. What are the reactions at A?
A 1200 ft. equal tangent crest vertical curve is currently designed for 50 mi/hr. A civil engineering student contends that 60 mph is safe in a van because of the higher driver’s eye height. If all other design inputs are standard, what must the driv..
A 12-in. square concrete pile is driven into clay to a depth of 40 feet. Unit weight is 115 pcf, and qu is 2000 ksf. Find the pile's design capacity if the factor of safety is 2.
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