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Discuss the ingredients of concretes and how the material quality effects on the durability of concrete.
A circular hatch, 2-m in diameter has its top 10-feet under water ( fresh water s.g = 1.0), and is oriented vertically in the water column. What is the hydrostatic pressure force on the hatch, in Newtons.
What is the hydrostatic force on the bottom surface of the can?
Water is flowing in a trapezoidal channel with 10 ft bottom width and 2H/IV side slopes. The channel is running on a slope of 0.00778 ft/ft and the flow exerts a shear stress of 1.5 lbs/ft2 on the channel bed. What is the depth of flow in this cas..
Design a Portland cement concrete mix for a loading dock driveway slab. The concrete will be exposed to deicing chemicals and subjected to freezing and thawing in a moist condition. This is severe environmental exposure.
To protect the channel from erosion, the normal flow velocity for the design discharge has to be reduced to 7.0 fps or below, and the flow Froude number must be reduced to 0.80 or below.
For a given hypothetical flow, the velocity from time t=0 to t=5s was u=3m/s, v=3m/s. then from time t=5s to t=10s, the velocity was u=2m/s, v=2m/s. A dye streak was started at a point in the flow
determine a composite scs runoff curve number for a 600acre basin that is totally within soil group C. the land use is 40% contoured row crops in poor hydrologic condition. 60% native pasture in fair hydrologic condition.
An embankment for a highway 30m wide & 1.5m in a compacted thickness is to be constructed from a sandy trucked from a borrow pit. the water contenet of the sandy soil in the borrow pit is 15%& its void ratio is 0.69.
The average rate of flow measured in a gage at the outlet of the watershed was 30 m^3/sec. Estimate the water losses due to the combined effects of evaporation, transpiration, and infiltration due to ground water.
Corporate Decision Making
If the diameters are 2 cm and 4 cm, respectively, calculate the fluid viscosity if the torque on the inner cylinder is measured to be 0.0026 N*m.
Three cylinders from the same mix were tested for strenght. Cylinders A and B were cast in 4x8 molds while cylinder C was cast in a 6x12 mold. The total loads were as follows; cylinder A= 65,200 lbs., cylinder B= 68,550 lbs., cylinder C= 151,190 l..
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