Correct answer
D. 1 in 250
Explanation
The correct answer is 1 in 250.
Laying of sewers is usually done with the help of________?
A sewer running partially full and hurried with back filled, fails in compression due to________?
In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?
An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is________?
The slenderness ratio of a column supported throughout its length by a masonry wall is________?
The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about________?