Rehabilitation and Maintenance of Drains and Sewers / Prof. Dr.-Ing. D. Stein, Dipl.-Ing. R. Stein (2004)

Hydrostatic Pressure in Flexible Pipes

image
Image 5.3.3.7.5.3-1:  Loading due to hydrostatic pressure [FI-Hoech] [Koch85]

If the pipes to be rehabilitated lie in the groundwater region, then with leaking or porous pipes, the plastics liner is loaded by the groundwater column above the pipe middle point (Image 5.3.3.7.5.3-1). For un-grouted gravity operated HD-PE pipes without side support effect, for instance, the buckling pressures pk determined in the investigations to (Image 5.3.3.7.5.3-3) are then valid. Other empiric and analytical calculation statements are described in (Abschnitt 5.3.2.6.1).

Rehabilitation and Maintenance of Drains and Sewers / Prof. Dr.-Ing. D. Stein, Dipl.-Ing. R. Stein (2004)