(draft version)
- only for circulation OPEN CONTENT - NEW WORK ITEM PROPOSAL -
Date of presentation
Reference number
(to be given by the Proposer)
Proposer
Technical Open Standard version:
New work item: - dimensional based standard of special product
Title of proposal - English title:
"Municipal Castings. Gratings, - grates and frames, - for catch-basin or drain-storm manholes, - for use in vehicular and pedestrian areas."
"Particulars of special product; Dimensional, - NS.670 mm - 26.50 in."
"Assembly of grated-lid and frame - loading class 350...400 kN."
Envisaged publication type - Private Standard or Workshop Agreement - in form of an open standard for technical product
Purpose and justification
The proposal tries to be in interest of the stakeholders of iron castings, civil engineers, to get a consensus concerning this proposal starting from the point of view of end users - in order of going on the market of the product which is the subject of open document.
Relevant documents to be considered: Basic standards, as are EN124, AS3996 [WSA(A)132-2011], AASHO, and others.
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The proposal consists in designs of street manhole covers of 250...400 kN loading class - in order to be cast by low grade ductile iron (350...450 N/sq.mm).
Note! Due to manufacturer and customer - hinges or/and locking devices may be designed to fit the lids and frames.
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Grate(d) Lid
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Vent(ed) Lid
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Square Frames (Round Opening)
Round Frames
