# Civil Engineering - Estimating and Costing

### Exercise :: Estimating and Costing - Section 1

41.

The total length of a cranked bar through a distance (d) at 45° in case of a beam of effective length L, is

 A. L + 0.42 d B. L + 2 x 0.42 d C. L - 0.42 d D. L - 2 x 0.4 d

Explanation:

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42.

While estimating a reinforced cement structure, the omitted cover of concrete is assumed

 A. at the end of reminforcing bar, not less than 25 mm or twice the diameter of the bar B. in thin slabs, 12 mm minimum or diameter of the bar whichever is more C. for reinforcing longitudinal bar in a beam 25 mm minimum or diameter of the largest bar which is more D. All the above.

Explanation:

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43.

The excavation exceeding 1.5 m in width and 10 sq.m in plan area with a depth not exceeding 30 cm, is termed as

 A. Excavation B. Surface dressing C. Cutting D. Surface excavation.

Explanation:

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44.

Pick up the incorrect statement from the following:

 A. Dimensions are measured to the nearest 0.01 m B. Areas are measured to the nearest 0.01 sq.m C. Cubic contents are measured to the nearest 0.1 cm m D. Weights are measured to the nearest 0.001 tonnes

Explanation:

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45.

If tensile stress of a steel rod of diameter D is 1400 kg/cm2 and bond stress is 6 kg/cm2, the required bond length of the rod is

 A. 30 D B. 40 D C. 50 D D. 53 D E. 59 D