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A timber post in a domestic dwelling is subject to an axial load of 64kN under the worst load case.
part(a) If the maximum allowable compressive stress of timber is 7MPa, what is the minimum available size of square section post required. (give dimensions as well as area). Please show working.
part(b) The post is 5.3m high, carrying loads from a second storey attic as well as roof loads down to the foundations. Apart from axial load capacity, what other structural considerations are necessary in the design of the member. Plaese explain
A uniform ladder with a mass of 15 kg is placed on a frictionless vertical wall. An 80 kg person climbs up the ladder. If the coefficient of friction between the floor and the base of the ladder is 0.15, how far did the person climb
A toxic compound being is removed from solution in a CSTR at Steady State according to a first order reaction rate. The upstream concentration of the pollutant is 14 mg/L and the downstream concentration is 1.7 mg/L.
A rigid tank contains 40 lbm of air in 20 psia and 70 degrees F. More air is added to the tank untill the pressure and temperature rise to 35 psia and 90 degrees F, respectively.
Determine an appropriate pipe diameter and slope for this reach, and establish the pipe invert elevations at the upper and lower manholes. Assume that a minimum earth cover of 2 m above the pipe crown is required.
Determine the height of capillary rise of benzene in a clean glass tube of 0.01 inches ID at a temperature of 20 degrees Celsius. Assume λ = 65 degrees Celsius.
A bar is under uniform axial loads. AB is 1 foot and has a area of .5 in^2 and BC is 1 foot and has an area of .3 in^2. AB has a 1000lb force putting it under tension and BC has a 500lb force putting it under compression
Two cars are traveling on level terrain at 60 mi/h on a road with a coefficient of adhesion of 0.8. The driver of car 1 has a 2.5-s perception/reaction time and the driver of car 2 has a 2.0-s perception/reaction time
what policies were implemented during and after WW1,WW2,Cold war?
Biological treatment processes for wastewater can be catogarised as dispersed growth and attached growth systems. Discuss the advantages and disadvantages of attached growth systems over dispersed growth systems.
The probability that a new car battery functions for over 10,000 miles is .8, the probability that it functions for over 20,000 miles is .4, and the probability that it functions over 30,000 miles is .1. If a new battery is still working after 10,..
A sand sample has a porosity of 38% and specific gravity of solids of 2.66. Find the void ratio and wet unit weight in lb / ft3 if the degree of saturation is 35%.
Suppose a watershed in Athens, Georgia has 25 acres pasture (CN=70) and 50 acres wooded (CN=55). Determine the excess rainfall (in inches) and runoff volume (cubic feet) assuming the design rainfall is 25-year, 24-hour.
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