Ductile Iron Manhole Covers: Size-670 Ductile iron manhole covers

A PROPOSAL of INDUSTRY WORKSHOP AGREEMENT

OPEN CONTENT DOCUMENT (draft version) - only for circulation - NEW ITEM PROPOSAL -

Reference number (as case, to be given by the consensus of stakeholders)

Proposer: Technical Open Source

New work item: - dimensional based product specification.

Title of proposal - English title:
"Municipal Castings. Covers, - lids and frames, - for sewer or drain/storm manholes, - for use in vehicular and pedestrian areas."
"Particulars of special product; Dimensional specification, - Size 670 mm - 26.50 in."
"Assembly of lid and frame - heavy duty loading class -
(210, 250); (350/360); 400 kN / 40,000-100,000 LBS."

Envisaged publication type - Private Standard or Workshop Agreement - in form of an open source for 'technical product specification'.

Purpose and justification:
The proposal tries to be in interest of stakeholders in domain of iron castings, civil engineers, to get a consensus concerning the proposal starting from the point of view of end users - in order to go on the market of the product which is the subject of technical open source document.

Relevant documents to be considered: Basic standards, as are: EN124, GOST3634, AS3996 [WSA(A)132-2011], AASHTO(M306), and others.

- - - -

The proposal consists in designs of heavy duty manhole covers of (210, 250); (350/360); 400 kN or 40,000-100,000 LBS loading class - in order to be cast by low/medium grade ductile iron (N/sq.mm-%) in compliance with loading class and pieces (and reinforcement) structure.

Note!
Hinges or locking device are not subject of proposal
Due to manufacturer and customer - hinges or/and locking devices may be designed to fit the lids and frames.

Lids:
- vented, with 4 round holes