advanced drainage system - Polypipe

Ridgidrain Pipe Design Properties 1.4
Structural Properties
Table 1.4.3 Long term pipe design properties
Nominal Mean I E EI/D 3
size (mm) DIAMETER (m) (m 4 /m x 10 -9 ) (kN/m 2 x 10 3 ) (kN/m 2 )
150 0.158 47.2 230 2.71
225 0.239 113.7 230 1.90
300 0.320 264.7 230 1.84
375 0.395 543.7 230 2.03
400 0.417 486.9 280 1.88
450 0.471 699.3 280 1.87
500 0.525 934.3 280 1.80
600 0.622 1324.1 280 1.54
750 0.811 3820.2 580 4.14
900 0.950 3125.9 580 2.11
1050 1.118 6510.4 580 2.70
Ridgidrain Installation 1.5
Installation of the Ridgidrain system is typically carried out in accordance with the Manual Contracts Documents of
Highway works (MCDHW).
The following standard details reference the MCDHW and illustrate pipe bed and surround requirements for carrier
or filter drain installation.
Standard details
Granular pipe bed and surround material, consisting of natural and/or recycled coarse aggregate or recycled
concrete aggregate, should have the following specification (in accordance with clause 503.3 MCDHW).
For pipes on beds shown on HCD Drawing Number F1 as Types B, F and S
BS EN 13242, Coarse aggregate (clause 4.3.2)
Aggregate size, mm
Nominal pipe diameter, mm Graded Single Size
Up to 140 4/10
> 140 to 400 2/14 or 4/20 4/10, 6/10 or 10/20
> 400 2/14, 4/20 or 4/40 4/10, 6/14, 10/20 or 20/40
(a) Category for general grading requirements – G C
80-20
(b) Category for maximum values of fines content
i) Gravel – f1.5
ii) Crushed rock, recycled aggregate – f4
(c) A resistance to fragmentation in Category LA50 in accordance with BS EN 13242, clause 5.2 and Table 9;
(d) A water-soluble sulfate content of less than 1.9 grams of sulfate (as SO3) per litre when tested in
accordance with BS EN 1744-1, clause 10;
(e) All other requirements in Category NR.
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