Hello,
today the concrete slab was poured at our site. What I unfortunately noticed only late is that the main pipes under the slab are laid very shallow and were routed outside the building (about 15cm (6 inches) below the sand). As far as I know, pipes outside the building must be located below the frost line. How is this handled inside the house?
today the concrete slab was poured at our site. What I unfortunately noticed only late is that the main pipes under the slab are laid very shallow and were routed outside the building (about 15cm (6 inches) below the sand). As far as I know, pipes outside the building must be located below the frost line. How is this handled inside the house?
That is correct. Supply and disposal pipes are installed at different depths and trench widths depending on their type. The installation of wastewater pipes inside and outside buildings is subject to the standards DIN EN 752 / 1610 / 12056-5.
Pipes located outside buildings must generally be laid below the frost line, with a cover of 80–120 cm (31–47 inches) depending on the frost zone—see attachment. Inside buildings, a cover of at least 10 cm (4 inches) of fine sand above the pipe crown may be sufficient up to the underside of the floor slab, provided the rooms are frost-free. This must be decided by the responsible construction manager or architect.
Pipes located outside buildings must generally be laid below the frost line, with a cover of 80–120 cm (31–47 inches) depending on the frost zone—see attachment. Inside buildings, a cover of at least 10 cm (4 inches) of fine sand above the pipe crown may be sufficient up to the underside of the floor slab, provided the rooms are frost-free. This must be decided by the responsible construction manager or architect.
Thank you for your reply, wpic.
However, the drain pipe runs through the foundation to the outside at about 10-15cm (4-6 inches) depth. How do you get to the 80-120cm (31-47 inches), is that due to a slope requirement? Won’t the shallower part of the pipe outside the house freeze later, or does it need to be insulated?
However, the drain pipe runs through the foundation to the outside at about 10-15cm (4-6 inches) depth. How do you get to the 80-120cm (31-47 inches), is that due to a slope requirement? Won’t the shallower part of the pipe outside the house freeze later, or does it need to be insulated?
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