Hellen Christodoulou, Ph.D. Ing., B.C.L., LL.B., M.B.A.
Regional Manager, Canadian Institute of Steel Construction (CISC-ICCA)
The CISC-ICCA Steel Bridge Certification Standard, 3rd Edition, for Complex Steel Bridges and Simple Steel Bridges is designed to assess the Fabricator’s Quality System. Additionally, it provides a level of assurance that the company performing the fabrication processes has personnel in place to better abide to the contractual and regulatory requirements. This standard addresses the special processes and specific requirements of steel fabrication for highway and railroad bridge structures.
CISC-ICCA Steel Structures Certification is designed to assist Fabricators in developing a Quality System that will provide assurance that products will conform to contractual and regulatory requirements. This guideline addresses the special processes and specific requirements of the steel fabrication industry. The Guideline is based on the belief that quality awareness is an integral part of all production processes. By promoting a “pride in workmanship” attitude among employees, product quality will be maintained in the most economical manner.
THE CISC-ICCA STEEL BRIDGE CERTIFICATION STANDARD
What are the Quality Requirements in the Bridge Code: CAN/CSA-S6?
In most jurisdictions in Canada, the Canadian Highway Bridge Design Code (CHBDC) applies for the design and construction of bridges.
The provisions within CHBDC are:
- Intended to provide a uniform level of safety, durability and economy;
- To form an integral part of the approach to ensure construction quality is maintained;
- To ensure a mandatory requirement to provide “inspection and testing to ensure compliance with the plans”.
CHBDC: Section 22.214.171.124
On Quality Control and Assurance
CHBDC: The Commentary Section C126.96.36.199
On Quality Control and Assurance
The provisions of the code have been formulated and calibrated on the assumption that high standards of construction will be adhered to. If this were not so, generally larger design loads and lower strengths would have to be used, or lower safety levels accepted.
High standards of construction require:
- That only competent and conscientious constructors be entrusted with the work;
- The plans include clear, comprehensive and practicable specifications;
- Testing and the supervision of construction are such, to guarantee compliance.
Traditional vs. Modern Construction Practice
Traditionally, many jurisdictions ensured compliance with the plans by maintaining a team of highly trained inspectors. Inspectors were employed or retained by the owner to monitor every stage of construction, as well as ensure the specified level of quality was upheld.
More recently, construction practice has shifted to require the constructor to take responsibility for adherence to quality. This means that quality control is no longer in the hands of the owner. As P3 and design-build delivery mechanisms have become more prevalent, all aspects of project delivery, including quality management, have become outside the direct control of the owner.
For pre-fabricated and plant produced products such as structural steel or precast concrete, a system must be in place to ensure only competent and conscientious constructors (including subcontractors) are entrusted with the work. In the absence of full-time inspectors employed or retained by the owner, this can only be achieved by requiring plants to maintain a quality management system that is audited and certified by an independent and accredited organization.
Importance of the Quality Management System (QMS)
The certification body must verify that the Quality Management System (QMS) is specific to the product being produced. It must also be comprehensive enough to ensure all aspects of a fully functioning QMS are maintained.
For structural steel fabrication, an auditing and certifying system did not exist in the past. In 2010, the CISC-ICCA (with industry support) addressed this need with the introduction of a comprehensive certification program specific to steel bridge fabrication.
To obtain certification, fabricators must demonstrate they have a documented QMS. Additionally, they must provide evidence they have the knowledge, experience, equipment and personnel capable of fabricating steel bridges to the requirements of CHBDC and referenced standards W47.1 and W59.
In essence, the CISC-ICCA certification program provides assurance that only competent and conscientious constructors are involved in steel bridge fabrication.
Annex A10.1 is a normative (mandatory) part of CHBDC—the construction requirements are considered essential for structural safety and durability.
In keeping with the general requirements of Clause 188.8.131.52, Clause A10.1.1.2 requires fabricators to have a comprehensive QMS addressing the requirements of Section 10; including fracture control.
Fabricators shall have a comprehensive, documented quality management system (QMS). The quality standard shall be an industry recognized certification program specific to steel bridge fabrication acceptable to the Regulatory Authority. The QMS shall address the requirements of Section 10 and shall include a documented fracture control plan. For single-span girder bridges consisting of un-spliced rolled sections or single span pedestrian bridges, certification requirements may be waived or modified by the Regulatory Authority.
Note: A quality management system certified by the Canadian Institute of Steel Construction, in the category of steel bridges, is compliant with this requirement.
Some important considerations:
- CISC-ICCA Certification in the category of steel bridges is specifically mentioned as being compliant with the requirement;
- While the regulatory authority may accept other compliant certification programs, the CISC-ICCA certification is the only current program that fully addresses the requirements of CHBDC;
- CISC-ICCA certification does not supersede the mandatory requirement for steel fabricators to be certified by the Canadian Welding Bureau (CWB) to CSA 47.1;
- CISC-ICCA certification and certification to W47.1 go hand-in-hand. In fact, it is mandatory for CISC certified fabricators to be certified to W47.1 Division 1 or 2;
- Certification to W47.1 is specific only to welding. The certification requirements for W47.1 do not have mandatory requirements for a quality management program. W47.1 does not assess qualifications that are critical to bridge fabrication, such as fracture control (CHBDC Clause 10.23) and construction requirements (CHBDC Annex A10.1).
Taking just 2 examples that highlight why a mandatory certification would have mitigated, if not altogether, avoided issue related to project execution. ** Values are approximate**
|Walterdale bridge in Edmonton (Alberta)||Johnson Bridge in Victoria (British Columbia)|
|Some of the critical issues of this project||Some of the critical issues of this project|
|– Delivery and fabrication delays of the steel arches.||– Delivery and fabrication delays of the steel.|
|– Defects and deficiencies upon arrival from abroad.||– Defects and deficiencies upon arrival from abroad.|
|– Incorrectly sized and painted modules were delivered.||– Fitting issues and over 75 deficient welds.|
|– Inspection confirmed steel did not meet Canadian standards.||– Material was rejected.|
|– Defects required for local welding corrections and other repairs.||– Inspection confirmed steel did not meet Canadian standards.|
|– Defects required additional bolted plates and connections.|
|– Required new design for some sections.|
|– Local fabricators were consulted to offer opinions on remedial measures.|
|– Remedial measures required for additional bridge closures.|
|Costs surpassed by 3.5 Million|
Delays over 24 months
|Costs surpassed by 40.0 Million|
Delays over 36 months
These are just two examples that were taken amongst many others, all of which have a consistent pattern of problems and issues that arise. These issues include:
- Late deliveries;
- Cost overruns;
- Legal pursuits;
- Defects and deficiencies;
- Non-conformities to Codes and Standards;
- Require intense inspection and testing;
- Local fabricators consulted to solve and remedy issues.
In a world of global supply chains, all levels of government are facing new procurement and construction challenges. As with many pre-fabricated products, steel bridge girders could come from anywhere in the world.
At this time, it can no longer be assumed that a fabricator will be familiar with Canadian bridge construction standards or have the facility, personnel and equipment capable of compliance with the contract requirements. Moreover, it can no longer be assumed that a fabricator will be concerned with his long-term reputation. Lastly, the competitive bidding process can put price above all other considerations.
- To comply with the intent and requirements of CHBDC: Section 184.108.40.206, on Quality Control and Assurance, inspection and testing are facilitated if fabrication is local;
- Certified fabricators having CISC-ICCA Steel Bridge Certification Standard offer the only current program that fully addresses the requirements of CHBDC;
- The National Building Code, the Handbook of Steel Construction and the CHBDC are formulated on the assumption of quality and to guarantee compliance. As is intended, certification would offer this guarantee;
- CHBDC recognizes the interdependence between the design requirements and construction quality in maintaining the targeted reliability and durability. The certification requirements for steel bridge fabricators are considered an essential part of the code requirements. While a regulatory authority is free to waive or modify parts of CHBDC as it sees fit, it does so at its own peril;
- To ensure compliancy with the requirements of CHBD, to guarantee the best overall return of $ value for the public infrastructure projects, it is essential to adopt the CISC-ICCA Steel Bridge Certification Program and require mandatory CISC-ICCA Certification for Canadian fabricators.
CISC-ICCA STEEL STRUCTURES CERTIFICATION
As per the Steel Bridge Certification, the Steel Structures Certification requires the implementation of a Quality System.
The reasons to implement a Quality System:
- Improve profitability;
- Consistently meet customers’ requirements;
- Improvement in performance, coordination and productivity;
- Provide evidence to customers and potential customers of the organization capabilities;
- Instill confidence that the intended quality is being achieved and maintained.
The production of ‘Work Procedures’ or a ‘Standards Procedures Manual’ is a useful tool in analyzing company processes and identifying areas of duplication, inefficiency or neglect. These are internal documents and therefore compliment a Quality System of Quality Assurance Manual.
The scope and aims of a Quality System Manual
Defines the scope and application with respect to Departments and Systems
- CSA S16
- CSA W59
- CSA W47.1
- CISC Code of Standard Practice
Inclusions in the Manual
- Quality System Requirements
- Work Procedures
- Control of Quality Records
- Management Responsibility: including Management Commitment
- Organization Structure and Management: Including Quality Assurance, Engineering, Production, Drafting, Purchasing, Sales/Estimating and Project Management
- Resource Management
- Process Management
- Contract Review
- Purchasing & Receiving
- Material Verification
- Control of Workmanship
- Product Verification
- Customer Supplied Products
- Storage Loading and Shipping
- Control of Measuring and Inspection Equipment
- Measurement Analysis and Improvement and Control of Non-Conformity
- Correction and Prevention Actions
At the same time, global procurement is becoming more prevalent and project delivery mechanisms are changing. Owners have diminishing control over the enforcement of quality standards. The potential for compromising safety and durability have increased proportionately.
Recent contracts require the contractor to take the responsibility of ‘quality control’, as opposed to the owner. The engagement of a certified fabricator would give back some control to the owner as an underlying guarantee of the expected quality of work.
Many quality issues can take years or even decades to become evident, which can lead to increased maintenance costs and shortened life cycles. The CISC has recognized the changing situation and has taken the lead in creating world-class certification programs for fabricators specific to the needs of Canada.
We all have a responsibility to raise the bar for the steel construction industry.
We need to work together; we need to be bold and we need to act now.
The Canadian Institute of Steel Construction. CISC Steel Bridge Certification Standard, 3rd. Edition, 2018: Complex Steel Bridges and Simple Steel Bridges
The Canadian Institute of Steel Construction. CISC Steel Fabrication Quality Systems Guideline and Commentary, 2nd Edition, 2008
CSA S6-14 – Canadian Highway Bridge Design Code, 2014 Edition
CSA S16 – 2019 – Design of Steel Structures, 2019 Edition