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14 DIAMOND Precast Concrete Ltd.| 7520 Conrad St | Burnaby, BC V5A 2H7
Tel: 604.415.5181 | Fax: 604.415.5185 |
Section: 7
Date: 12/03/2015
Edition 1, Revision: 0
Page: 1 of 2
Section 7: Design Control
A. The DE designated P.Eng is responsible to ensure that all design calculations, specification and
drawings (either developed by DIAMOND PRECAST CONCRETE LTD. or by others) are in
accordance with the client’s specifications, as well as the CSA 23.4 (A257.4-03) Standard
Editions, at the time of work order entry. In general, it is expected that a single system of units
shall be used for all aspects of design, except where unfeasible or impractical. US customary, SI,
or any local customary units may be used to demonstrate compliance with all requirements of this
edition; e.g. materials, design, production, examination, inspection and testing.
B. Prior to becoming effective, all design calculations, specifications and drawings shall be approved
and stamped by DE and copy to be submitted to the CSA jurisdiction for information.
C. The P.Eng is responsible to ensure that all revisions to existing registered designs are also
submitted to the CSA jurisdiction for information only.
D. The P.Eng is also responsible to Design and approve concrete mix to ensure to achieve desired
compressive strength as per CSA Standard A23.4
E. Distribution of revised drawings and specifications shall be done by the QCM, who will ensure
that all superseded copies are removed. The removed copies are to be marked void, or destroyed.
F. The P.Eng is responsible for establishing that all customer specifications and details meet CSA
23.4 (A257.4-03) Standard requirements as a minimum.
G. The P.Eng shall review and approve all drawings, design calculations, and specifications of the
standard precast concrete products for compliance with the current edition of the Standard. This
review shall be documented by a memo to the file. If the customer submits calculations and /or
drawings, the P.Eng shall review, and where necessary, prepare drawings to meet Standard
requirements.
H. All calculations and drawings shall be submitted to the CSA Authorized Inspector for review
during their visit for audit.
1. If drawings are amended during the manufacturing cycle, the QCM will ensure that the
obsolete or revised drawings are removed from the shop floor. One copy of the obsolete
drawings - marked obsolete - shall be kept in the Obsolete Drawing File; the rest shall
be discarded.
2. On completion of Special Jobs, the drawings will be withdrawn from shop floor,
marked “Reference only” and filed in the P.O / W.O file.
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