ISO 13272:2011 非圧力地下排水および下水道用のプラスチック配管システム—非可塑化ポリ（塩化ビニル）（PVC-U）、ポリプロピレン（PP）、ミネラル改質剤を含むポリプロピレン（PP-MD）およびポリエチレン（PE）—マンホールおよび検査室の仕様交通区域および地下設備で | ページ 5

3.1.1

inspection chamber

drainage or sewerage fitting used to connect drainage or sewerage installations and/or to change the direction of drainage or sewerage runs, which terminates at ground level with a riser shaft of 200 mm minimum outer diameter and an inner diameter of less than 800 mm

Note 1 to entry: Shallow inspection chambers have a maximum depth from invert to top of the riser of 1,25 m. Deep inspection chambers are intended for installation at depths greater than 1,25 m.

Note 2 to entry: There are no recommendations for non-circular inspection chamber risers in EN 476.

Note 3 to entry: See also EN 476 for non-circular chambers.

3.1.2

manhole

drainage or sewerage fitting used to connect drainage or sewerage installations and/or to change the direction of drainage or sewerage runs, which terminates at ground level with a riser shaft of 800 mm minimum inner diameter

Note 1 to entry: Rectangular riser sections have minimum internal dimensions of 750 mm × 1 200 mm and elliptical risers have minimum axes of 900 mm × 1 000 mm.

Note 2 to entry: The termination at ground level allows the introduction of cleaning, inspection and test equipment and the removal of debris and provides access for personnel.

Note 3 to entry: Chamber and manhole components are subject to national safety regulations and/or local provisions regarding man-entry limitations. The installer should check for compliance prior to installation.

3.1.3

base component

base part of a manhole or inspection chamber, allowing direct connection to buried drain or sewer pipes and including integrally formed channels with benching as appropriate

3.1.4

riser shaft

usually circular structure providing a vertical conduit between the base unit and the near ground level

Note 1 to entry: The riser shaft can be supplied either as a separate component for site jointing to the base unit, or integrally formed with the base unit by the manufacturer.

3.1.5

near-surface components

components which ここで, provided, connect to the top of the riser shaft and provide a seating for the cover and its frame

Note 1 to entry: Near-surface components are only usually used in areas of vehicular traffic loading and are intended to spread vehicular wheel loadings into the ground and minimize the transmission of this load to the riser shaft.

3.1.6

telescopic part

part of the assembly that allows accommodation of settlement that might occur after installation and allows adjustment of the height of the chamber

Note 1 to entry: Telescopic parts are normally installed within 2 m of the ground level.

3.1.7

cone

adapter allowing connection of the base and riser or riser/telescopic part to the near-surface components

Note 1 to entry: Cones are normally installed within 2 m of the ground level.

3.1.8

chamber assembly

items collectively forming a buried inspection chamber or manhole

3.1.9

reformulated material

recyclable/reprocessable material that has been reformulated, by the use of additives and processing techniques, to meet an agreed specification

Note 1 to entry: Typically, the additives used would be stabilizers, pigments, etc; the reformulated material taking the form of homogeneous pellets, granules, powder, etc. with the produced batch having consistent physical properties.