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Excavation may be classified by type of material- Earth excavation ________ excavation, rock excavation, muck excavation, unclassified excavation.
If the excavation of earth is done manually then it costs Rs. 100 per cum. A machine can excavate at a fixed cost of Rs. 40,000 plus a variable cost Rs. 20 per cum. The quantity of the earth for which the cost of excavation by machine will be equal to the cost of excavation by machine will be equal to the cost by manual excavation is
If the excavation of earth is done manually then it costs Rs. 80 per m3. A Machine can excavate at a fixed cost of Rs. 60000 plus a variable cost of Rs. 20 per m3. The quantity of earth for which the cost of excavation by machine will be equal to the cost by manual excavation is
If the excavation of the earth is done manually then it costs Rs. 10 per cum. A machine can excavate at fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost of excavation by machine will be equal to the cost of manual excavation is
If the excavation of earth is done manually then it costs Rs. 10 per cum. A machine can excavate at a fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost of excavation by machine will be equal to the cost of manual excavation is
Consider the following statements: 1. According to Terzaghi’s, a foundation is shallow if its depth is equal to or less than its width. 2. Spread footing, strap footing and raft footing are types of shallow foundations. 3. Combined footing may be trapezoidal if the two columns carry unequal loads; and rectangular if both columns carry equal loads. 4. For water tanks, providing raft foundations will avoid unequal settlements. Which of the above statements are correct?
The single stage well point system of dewatering an excavation can be used if the depth of excavation does not exceed
Consider the following statements: 1. A braced coffer dam is used in shallow trench excavation as well as in deep excavation exceeding 6 m in depth. 2. Coffer dams, braced or un-braced, are temporary structures either on land or in water bodies. 3. When sheet piling is used for retaining soil, or soil and water, without any bracing, it is called a bulkhead. Which of the above statements are correct?
A _____________ is defined as a structure which is sunk through ground or water to exclude water and semi fluid material during the process of excavation of foundations.
Pick up the excavation where measurements are made in square meters for payment. A. Ordinary cuttings up to 1 m B. Surface dressing up to 15 cm depths C. Surface excavation up to 30 cm depths