Jointed pipes shall be as given in tables 8 to 13 for

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Unformatted text preview: oncrete, Heavy-Duty, Non-Pressure of Concrete Pipes of Class NP4 — Reinforced Pipes Made by Casting Process (Clauses 5.1.1,5 .1.2,5.1.3,6.3.2 Internal Diameter of Pipes Reinforcements Barrel Wall Thickness Longitudinal Mild Steel or Hard-Drawn Steel mm mm and 7.1) ~ Spiral Hard-Drawn Steel kg/linear metre (I) (2) number (3) 300 350 400 450 500 600 700 800 900 1000 1100 1200 1400 1600 1800 50 55 60 65 70 75 85 95 100 115 120 125 140 165 180 8 8 8 8 8 8 or 6+6 8 or 6+6 8 or 6+6 6+6 8+!3 8+8 8+8 8+8 12+]2 12+12 kg/linear metre (4) 0.78 0.78 0.78 0.78 0.78 2.34 3.44 3.44 3.44 6.04 6.04 6.04 9.36 9.36 14.88 (5) 1.53 1.61 1.97 3.36 5.56 8.50 12.78 16.72 20.92 26.70 35.60 42.42 53.39 79.92 85.75 Streneth Test Requirements for T~ree Edge B;anng Teat A Load to Ultimate LoadProduce 0.25 mm Crack kN/linear metre kN/finear metre (6) (7) 26.4 39.6 29.8 44.7 33.9 50.9 36.9 55.3 40.0 61.2 46.3 69.4 52.2 78.3 59.3 89.1 66.3 99.4 72.6 108.9 80.4 120.6 88.3 f32.4 104.2 156.4 119.6 179.5 135.3 203.0 NOTE — Concrete for pipes shall have a minimum compressive strength of 35 N/mmzat 28 days (Page 12, Table 8) — Insert the following Note at the end of the Table: NOTE — The dimensions Dz, h and e shall conform to the values given in this table as these are criticaf dimensions. The following tolerances shall apply on the crhical dimensions: Dimensions D2 h e Tolerances + 3 mm for pipes up to and including 300 mm internal diameter + 4 mm for pipes over 300 mm internal diameter. + 3 mm for dimensions up to 60 mm + S mm for dimensions above 60 mm + 2 mm for dimensions up to 30 mm + 3 mm for dimensions above 30 mm kdcnent No.3 to IS 4S8 : 19S8 (Page 14, Table 10) — Insert tbe following new Tables 10A and NW after ‘Fobk 10 Table 10A Spigot and Socket Dimensions for NP3 Reinforced and Unreinforced Reinforced PSpea Made by Vertkd and NP4 Casting Prosess (Clause 5.3) in Mldintestsions miIbmlres. I=;–-l ‘1-1 .-l . ,----- —___ ______ _ 1 I I -1 .— .—. _- 1I I I .- ------- ----- ------ d, G R T 30W4 13 322 50 3506 13 370 4o13&5 13 417 450ti 13 465 --- Dm 1, b 487A l12i4 lo5& 55 555ti 112M 105Q 60 615A 112i4 105& 65 680i4 112i4 d, 1, s D. r& 370.07 386.07 49 50 8.ootl.o 425.07 441.07 49 50 8.flt3tl.O 480.07 496.07 49 50 8.O&l.O loss 536.07 552.07 49 50 8.O&tl.O 500+5 13 513 70 735t4 112& lo5i2 590.07 606.07 49 50 8.O&l.O 6oofi 13 609 75 85&4 112A 105H 7fx).07 716.07 49 50 8.t3&l.O 7t3r3*7 18 706 85 98tk5 141* 13243 808.00 830.00 61 65 11.o&tl.2 8oo&7 18 803 95 1 ltXkL5 141A 132i3 924.00 946.00 61 65 11.o&l.2 90027 18 901 100 1215*5 1416 132- 1036.00 1058.00 61 65 11.o&l.2 1 000*7 18 998 115 1 33*5 141ti 132ti 1148.00 1170.00 61 65 11.o&l.2 1 100*7 24 1097 120 1 520i6 155* 145& 1262.00 1291.30 72 63 14.65Y1.5 1200+7 24 1195 125 1 64&t6 1556 145s 1372.48 1401.78 72 63 14.65*1.5 I 40WI(I 24 I 383 140 1 87&6 1554 145S3 1590.91 1620.21 72 63 14,65*1.5 1 6OW1O 24 1578 165 2 IO&6 1554 145s 1814.91 1844.21 72 63 14.65~1.5 1 800* i...
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