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The bracket contains three slots that engage pins that are attached to a wall. Neglecting friction, determine the force exerted on the bracket by each pin.
An equal-tangent crest curve connects a +2% initial grade with a -1% final grade, and is designed for 55mi/h. The station of the PVI is 233 + 40 with elevation 1203 ft. What is the elevation of the curve at station 234+00
The design of a masonry wall to support vertical compression loading is influenced by the same factors that affect the design of all compression elements. One of these factors is the extent of rotational restraint at the top of the wall.
A 280 KN.m couple is applied to a wooden beam, of rectangular cross section 38mm by 90mm ,in a plane forming an angle of 30 degree with the vertical, determine the maximum stress in the beam.
Plot a curve showing the relationship of Se versus L/r for steel columns. Draw the curve for slenderness ratios that vary from 0 to 200. Assume the proportional limit = 235 MPa
The column consists of a rigid membr that is pinned at its bottom and attached to a spring at its top. If the spring is unstretched when the column is in the vertical position, determine the critical load that can be placed on the column.
A 5m wide rectangular sluice gate is opened to a height of 1.5m. the upstream water level is 4m and the downstream level os 2m. What is the discharge under the gate.
Let P (m, n) be the statement "m divides n," where the domain for both variables consists of all positive integers. (By "m divides n" we mean that n = km for some integer k.) Determine the truth values of each of these statements.
A rectangular portal frame of uniform section is hinged at the base and subjected to the loads shown in Figure S9.2 . The shape factor of the section is 1.15, the yield stress of the steel is 16 kips/in 2, and the required load factor is 1.75. Neg..
A thin plate of thickness t is bent to form the beam having the cross section shown. Determine the location of the shear center O .
For a population of bacteria with an initial biomass of 100 mg/L and a kd = 0.4 day-1, calculate the time necessary to reduce the population size to 10 mg/L.
Do the problem again but for an alum or iron floc with an overflow rate 20 m3/day.m2?
A complete mix activated sludge plant operates at design Q, with the reactor tank volume set by a nominal= 6 hours.. a) It was anticipated that it would operate at 25% RAS for an expected Xr= 2,000 mg/l. What would the actual be
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