BE-02 Open Cut Method: Embedment Zone

Minimum Trench Width Calculation in the US for Various Pipe Materials

How to Calculate the Minimum Trench Width for Ductile Iron Pipes?

The table below presents the minimum trench width as a function of pipe outside diameter for ductile iron pipe installation using the open cut method.

Table: 

Minimum trench width for ductile iron pipe in the US for installation using the open cut method as per [DIPRA Installation Guide]
Minimum Trench Width Based on Pipe Outside Diameter (OD)
Nominal Pipe Size (in) Trench Width (in) Nominal Pipe Size (in) Trench Width (in)
3 27 20 44
4 28 24 48
6 30 30 54
8 32 36 60
10 34 42 66
12 36 48 72
14 38 54 78
16 40 60 84
18 42 64 88

 

 

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