3736+CW4 GOVERNMENT ROYAPETTAH HOSPITAL, Westcott Rd, Indira Garden, Royapettah, Chennai, Tamil Nadu 600014
Building Contractors
Flanged joints with EPDM gasket
Butt fusion with data logger
PE100 SDR11 pipe at 40 m pull
M25 concrete with 16 mm rebar
24-hour test with chart recorder
Tyton push-on with rubber ring; we insert spigot till mark; test joint at 15 bar for 2 hours.
No traffic disruption; 1.5 m below road; we pull 200 mm HDPE inside 900 mm steel casing.
Yes, at bends over 11.25 degree; we calculate 120 kN force; cast against undisturbed soil.
Fill with chlorinated water; raise to 15 bar in steps; hold 24 hours; pressure drop less than 0.1 bar passes.
Water board EE signs alignment sheet; we survey every 50 m with GPS; mark valves and hydrants.
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