Hard, rough and durable granite stone ballast                    gauge, shall be used.

Related MCQs

• First coat of bituminous painting shall be with stone ballast no.3 and stone grit of 20 mm gauge at 220 kg of asphalt and 1.35 cu m of stone grit per 100 sq. m.
• Stone grits used for 1st coat and 2nd surface painting may be precoated in advance with advance with bitumen.
• Subgrade shall be well consolidated and compacted each with a camber of 1 in 60.
• Laying and consolidation shall be done during dry season.
• If subgrade is soft or weak, a thick sub- base of cheap and inferior materials well compacted should be used.
• Calculate vertical prestressing force if wires of 5mm diameter with an initial stress of 1000n/mm2 are available for circumferential winding and Freyssinet cables made up of 12 wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?
• Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm². The diameter of shaft and width of key can be taken as 40mm and 10mm respectively.
• Calculate minimum wall thickness given a cylindrical prestressed water tank of internal diameter 30m over a depth of 7.5m and the permissible compressive stress at transfer is 13n/mm2 and the maximum compressive stress under working pressure is 1n/mm2 and the loss ratio is 0.75?
• wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?
• Prestressed concrete tanks have been widely used for the storage of