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In: Civil Engineering

A base for an airport runway, 100 m wide, 2000 m long and 500 mm thick,...

A base for an airport runway, 100 m wide, 2000 m long and 500 mm thick, is to be constructed out of a clayey sand excavated from a nearby borrow pit, where the in situ water content is 6%. This soil is being transported in trucks having a capacity of 8 m 3 , where each load weighs 13200 kg. In the subbase course, the soil will be placed at a water content of 14.2% to a dry density of 1890 kg/m 3 . (1000 litres = 1m3 ) (a) How many truck loads will be required to complete the job? (7 points) (b) How many litres of water should be added to each truck load? (7 points) (c) If the base becomes saturated later, without any change in volume, what would be the water content? Assume Gs = 2.7.

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Ally Wells answered 5 months ago
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