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A 6m thick layer of sand overlies a 8m thick clay layer, below which is an impermeable stratum. The water table is at ground surface. For both layers assume unit weight as 20 KN/m3. For the clay, relationship between void ratio and effective stress (units KN/m3) can be expressed as:
e=0.920-0.42log(σ'/100)
A point load from a pier applies at ground surface which its magnitude is 1000KN. Calculate primary consolidation settlement of the clay layer at a distance of one meter from the point of application of the load.
a transmission tower is held my three guy wires attached to a pin at A and anchored by bolts b c and d if the tension in wire ab is 3.6 kn determine the vertical force p exerted by the tower on the pin at A
Assuming the ball experiences a downward acceleration of a = 10-9v2 when in the water, determine the velocity of the ball when it strikes the bottom of the lake.
The azimuth from station A of a link traverse to an azimuth mark is 212o 12' 36". The azimuth from the last station of the traverse to an azimuth mark is 192o 12' 15". Angles to the right are observed at each station
Using the tables in the AISC manual, make a preliminary selection of member size, using a HSS shape. Do not simple state a choice - state your logic step by step, quoting page numbers (AISC) for each step.
Design the shear reinforcement, vertical U stirrups for independent T beam. The beam spans 24 ft face to face between simple supports, has an effective depth d= 31 in.
A wide rectangular channel has a change of slope from 1 in 100 to 1 in 500 and the flow is 4m3/s/m. Manning's n can be taken as 0.015 Determine the normal depth of flow before and after the change in gradient.
Conduct either a qualitative or quantitative risk assessment on this project. Identify the risk factors that you consider most important for the suspension bridge construction. How would you assess the riskiness of the project? Why?
Roughly what is the maximum Volume of treated wastewater should you put in the bottle if you want to have at least 2.0mg/l of DO at the test (filling the rest of the bottle with the water
Determine the specific surfaces in m2/g units for the spheres of diameters (a) 10.0 cm, (b) 1.0 cm,(c) 0.1 cm, (d) 0.01 cm. (e) 0.001 cm and (f) 0.0001 cm. Assume the mass density of spheres as 2.5g/cc.
A worker is to paint the walls of a square room 8ft high and 12 ft along each side. what surface area in square meters must she cover?
In Chlorine disinfection (3-log reduction in Giardia- Cysts), determine the water pH for a contact time of 90 minutes using a chlorine concentration of 2 mg/L at 20 degrees C
The acceleration of a particle along a straight line is defined by a=(2t-9)m/s^2, where t is in seconds.At t=0, s=1m, and v=10 m/s. When t=9s, determine the particles position, the total distance traveled, and the velocity.
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