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

In thin slabs, 12 mm minimum or diameter of the bar whichever is more
All of these
At the end of reinforcing bar, not less than 25 mm or twice the diameter of the bar
For reinforcing longitudinal bar in a beam 25 mm minimum or diameter of the largest bar which is more

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Estimating and Costing
Pick up the correct statement regarding the centre line method of estimating a building

The centre line length is reduced by half the layer of main wall joining the partition wall
The centre line is worked out separately for different sections of walls of a building
All of these
Product of the centre line of the walls and area of cross-section of any item, gives total quantity of the item

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