Sewer Appurtenances

Different components used in sewer system is called sewer appurtenances. Manhole Manhole are circular sewer structure constructed with brick along the sewer network to allow for control, repair, and surveillance of sewer system. It is kept at a spacing of 10-50m in general. If the sewer system have bend then they are provided at closer system whereas in straight portions the manhole can be provided at a spacing upto 200m. Drop manhole Drop manhole are similar to manhole. They are

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Number of bricks required in 1m3 of wall

Standard size of brick = 240mm*115mm*57mm as per NBC Assume the size of mortar as 10mm Size of brick with mortar = 250mm*125*67mm Volume of 1 brick = (240*115*57)/10003=1.573*10-3 m3 Volume of 1 brick with mortar= (250*125*67)/10003=2.093*10-3 m3 Volume of mortar = 2.093*10-3-1.573*10-3 m3=5.2*10-4 m3 No of bricks required in 1m3 wall without mortar= 1/1.573*10-3 =635.72 numbers No of bricks required in 1m3 wall with mortar = 1/2.093*10-3 =477.78 numbers Assume 10% wastage , No of bricks for 1m3 wall

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