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Consider the following statements: 1. In the case of footings on purely cohesive soils, the benefit due to surcharge or depth of foundation is only marginal. 2. The bearing capacity of a footing in pure clay may be increased by increasing its size. 3. Factor of safety should be applied only to the net ultimate bearing capacity. Which of the above statements are correct?
Study the statements listed below (1) Negative skin friction is developed when the pile is driven through a recently deposited clay layer (2) Negative skin friction is developed when the pile is driven through a layer of dense sand (3) Negative skin friction is developed due to sudden drawdown of the water table Out of these statements
The following statements pertain to the occurrence of negative skin friction in piles. S1: It is developed when the pile is driven through a recently deposited clay layer. S2: It is developed when the pile is driven through a layer of dense sand S3: It is developed due to a sudden drawdown of the water table. Which of the above statement(s) is/are incorrect?
Consider the following statements: 1. IS 3583 refers to Burnt Clay Paving Bricks. 2. IS 5779 refers to Burnt Clay Soling Bricks. 3. IS 3952 refers to Burnt Clay Hollow Bricks. 4. IS 2222 refers to Burnt Clay Lay Bricks. Which of the above statements are correct? 
In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed
Consider the following statement: 1. Initial load tests and routine load tests are carried out on test piles and working Piles, respectively. 2. In a pile load test, the allowable load can be taken equal to half the ultimate load at which the total settlement amounts to one-tenth of the pile diameter. 3. In a pile load test, the allowable load can be taken equal to two-thirds of the total toad which causes a plastic settlement of 6 mm. Which of the above statements are correct?
The pile spacing of each pile is taken as __________ diameter of the pile.
In soft clay of low bearing capacity, the type of steel pile generally used, is
The steel pile which is generally sunk in soft clay or loose sand of low bearing capacity, is
Historically, the production of wood charcoal in locations where there is an abundance of wood dates back to a very ancient period, and generally consists of piling billets of wood on their ends so as to form a conical pile, openings being left at the bottom to admit air, with a central shaft to serve as a flue. The whole pile is covered with turf or moistened clay. The firing is begun at the bottom of the flue, and gradually spreads outwards and upwards. The success of the operation depends upon the rate of the combustion. Under average conditions, 100 parts of wood yield about 60 parts by volume, or 25 parts by weight, of charcoal; small-scale production on the spot often yields only about 50%, while large-scale became efficient to about 90% even by the seventeenth century. The modern process of carbonizing wood, either in small pieces or as sawdust in cast iron retorts, is extensively practiced where wood is scarce, and also for the recovery of valuable byproducts (wood spirit, pyroligneous acid, wood tar), which the process permits. The information given, if accurate, most strongly supports which of the following?