ISO 15398:2012 非交通地域で使用されるマンホールおよび検査室用の熱可塑性プラスチックカバーおよびフレームの仕様 | ページ 6

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

Note 1 to entry: It can be supplied either with an integral riser or a separate a riser shaft in both cases having a 200 mm minimum outer diameter and an inner diameter of less than 800 mm. For non-circular chambers the minimum clear opening should be 200 mm with a maximum opening width of 800 mm

Note 2 to entry: The opening at ground level permits the introduction of cleaning, inspection and test equipment and the removal of debris but does not provide access for personnel.

3.1.2

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.

3.1.3

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

3.1.4

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

3.1.5

cover frame

component that provides a stable support for the cover on its top surface and on its bottom surface attaches to the riser or near surface components or alternatively is imbedded in concrete as required by the installation details supplied by the manufacturer of the chamber or manhole

3.1.6

clear opening

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diameter of the largest circle that can be inscribed in the clear area of the frame

Note 1 to entry: Expressed in mm.

Note 2 to entry: See EN 124.

3.1.7

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.