W59 Includes:
- workmanship standards and technique
- prequalified details of joints and welding processes
- inspection procedures and acceptance criteria
- design strengths under static and cyclic loadings for welds for allowable stress and limit
states design methods
- allowable stress ranges for fatigue loading
It should be noted that Clauses 1 to 10 of the Standard cover the requirements common to all types of
structures and:
- Clause 11 governs welding of statically loaded structures
- Clause 12 governs welding of cyclically loaded structures
It should be further noted that in these two clauses, provisions are included for:
- the allowable stress design (ASD) method
- the limit states design (LSD) method
This is in view of both methods being used in current engineering practice, although the phasing out of
the ASD method in other governing CSA design standards (S16-01) indicates that the LSD design
approach will eventually become the preferred design method.
2.8.2 Review
A number of provisions in the Standard are of significance in that they clearly define the extent of its
coverage and the specifications mandated upon the designer, the fabricator and the inspection agency.
These are briefly discussed next, occasionally with explanatory background reasoning for their
inclusion into the Standard where feasible or deemed necessary.
1) Clear statement is made with respect to types of steel structures excluded from the coverage.
Reference is made to the distinct requirements provided by other regulatory authorities
exercising jurisdiction and having specific expertise pertinent to related, given products (e.g.,
water pipes – American Water Works Association AWWA, pressure vessels – ASME, API).