Thickness and minimum length of collars shall be the

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Unformatted text preview: DUTY, NON-PRESSURE PIPES OF CLASS NP4 PIPES ( Clauses 5.1.1, 5.1.2, 5.1.3, 5.2.2, 6.3.2 and 7.1 ) Under Review TABLE 5 DESIGN AND STRENGTH TEST REQUIREMENTS OF CONCRETE PIPES OF CLASS PlREINFORCED CONCRETE PRESSURE PIPES SAFE FOR 0.2 MPa PRESSURE TEST ( Clauses 5.1.1, 5.1.2, 5.1.3, 5.2.2, 6.3.2 and 7.1 ) REINFORCEMENTS INTERNAL B&ZL THICKNESS “dAEY (11 (2) . Longitudinal, Mild Steel or HardDrawn Steel ~____A----_? (31 mm mm Min number 80 25 6 , Spiral, HardDrawn Steel (5) (4) kg/linear metre kg/linear metre 0’33 0’15 100 25 6 0’33 0’22 150 25 6 0’33 0.46 200 25 6 0’33 0’79 225 25 6 0’33 1’00 250 25 6 0’33 1’22 300 30 8 0’78 1’75 350 32 8 0’78 2’37 400 32 8 0’78 3’05 450. 35 8 0‘78 3’86 500 35 8 0’78 4’72 600 40 8 0’78 6’79 700 40 8 1’22 9’15 800 45 8 1‘22 11’94 15’12 900 50 8 1’22 1 000 55 8 1’76 18’64 1 100 60 8 !‘?6 22’88 1 200 65 8 1’76 26’82 NOTE 1 - Strength NOTE 2 -If to 140/125. mild requirements steel for pressure is used for spiral pipes shall be the same as for NP2 class pipes. reinforcement. the weight specified under co1 5 shall be increased NOTE 3 - Soft grade mild steel wire for spirals may be used for pipes of internal 150 mm only, by increasing weight to 140/84. NOTE internal diameters 80 mm, 100 mm and given in this table is valid for pipes up to 2 m effective 4- The longitudinal reinforcement diameter of pipe up to 250 mm and up to 3 m effective length for higher diameter pipes. 9 length for IS : 458 - 1988 TABLE 6 DESIGN AND STRENGTH TEST REQUIREMENTS OF CONCRETE PIPES OF CLASS PZ REINFORCED CONCRETE PRESSURE PIPES SAFE FOR 0.4 MPa PRFXWRE TEST (Clauses 5.1.1, 5.1.2, 5.1.3, 5.2.2, 6.3.2and7.1) REINPORC~M~NTS BARREL WALL THICKNESS INTERNAL DIAMETER OF PIP@S Lstudinal, Mild Steel or HardDrawn Steel M-- Spiral, Ha;; Drawn Steel \ (3) (4) (1) (2) mm mm 80 25 6 0’33 0’29 100 25 6 0’33 0’45 0’93 Min number (5) kg/linear metre kg/linear metre 150 25 6 0’33 200 30 6 0’33 1’63 225 30 6 0’33 2’03 250 30 6 0’33 2’47 300 40 8 0’78 3’61 350 45 8 0’78 4’88 400 50 8 0’78 6.36 450 50 8 0’78 7’96 500 55 8 0’78 9’80 600 65 8 1’76 14’10 700 70 1’76 21’90 800 80 6f6 2’66 28.54 900 90 6f6 2’66 35’92 1 000 100 6f6 2’66 43’48 NOTE 1 - Strength requirements Nora2If mild to 140/125. steel is used 8 for pressure for spiral pipes shall be the same as for NP2 class pipes. reinforcement, the weight specified under co1 5 shall be increased Nora 3 - Soft grade mild steel wire for spirals may be used for pipes of internal 150 mm only, by increasing weight to 140/84. diameters 80 mm, 100 mm and NOTE 4 - The longitudinal reinforcement given in this table is valid for pipes up to 2 m effective internal diameter of pipe up to 250 mm and up to 3 m effective length for higher diameter pipes. 10 length for IS : 458 - 1988 TABLE 7 DESIGN AND STRENGTH TEST REQUIREMENTS OF CONCRETE REINFORCED CONCRETE PIPES SAFE FOR W6 MPa PRESSURE (Clauses INTERNAL zAK’“s” (2) mm P3 - 5.1.1, 5.1.2, 5.1.3, 5.2.2, 6.3.2 and 7.1 ) BARREL WALL THICKNESS (1) PIPES OF CLASS TEST mm REINFORCEMENTS ‘ Longitudinal, Mild Steel or HardDrawn Steel ~--...
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This document was uploaded on 10/01/2013.

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