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SDIBC Column – Spring 2007
In this issue...
Beijing National Stadium Bird’s Nest
Certification Through Apprenticeship?
SDIBC Welding Seminar, Sept 6th 2006
Fastener Seminar
SDIBC Bending Seminar
2006 Golf Tournament
Beijing National Stadium Bird’s Nest
by: Cathy Yan

The Beijing National Stadium will be the site for the opening and closing ceremonies for the Olympics Games held in the city in the summer of 2008. The project is a collaboration between Prtizker-Prize winning architects Herzog and de Meuron and ArupSport along with China’s Architectural Design and Research Group.

The steel infrastructure is constructed using 36 km of unwrapped steel, weighing a total of 45,000 tons. The stadium is a measured 330m long by 220m wide, standing 69.2m tall and spanning an area of 250,000 meters squared with a total cost of $460 million USD.

This historical landmark for the Olympic 2008 games is unlike any structure build prior. The structural elements will mutually support each other in a grid-like formation, which resembles the interlinking twigs of a bird’s nest. The main body of the infrastructure is constructed using 24 columns of trusses surrounding the bowl-like stands, which will seat 100,000 during the games. The structure will first be covered with a series of ETFE panels on the upper surface and an acoustic membrane will be applied to the lower surface in order to reflect and absorb sound, helping to maintain the atmosphere of the stadium interior. However, the initially proposed sliding roof will be eliminated in an effort to conserve costs and increase the safety of the new structure. Construction began with the groundbreaking in December 2003, followed by the main concrete
stand being put in place in November 2005. In late August of 2006, the steel skeleton was welded together and the entire project is proposed for completion later this year.

Sources:
ARUP - http://www.arup.com/eastasia/project.cfm?pageid=2184
Wikipedia - http://en.wikipedia.org/wiki/Beijing_National_Stadium
Picture Sources:
First four images: Official Website of Beijing 2008 Olympic Games - http://en.beijing2008.cn/74/79/article211987974.shtml
Last image: Wikipedia - http://en.wikipedia.org/wiki/2008_Olympics

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Certification Through Apprenticeship? by: Hector Medina 
taken from part 3-89 of CISC “Detailing Tables for Structural Steel” 4th edition. 

The SDIBC Board members have been discussing ways to expand certification of Steel Detailers nationally and / or internationally. One way that has been suggested is the “Interprovincial Standards Red Seal Program”, administered under the guidance of the “Canadian Council of Directors of Apprenticeship”(CCDA) and each province and territory has a Director of Apprenticeship for this purpose.

The Red Seal Program was established so that skilled workers could have greater mobility across Canada. The program has both compulsory and voluntary occupations and has 49 designated trades nationally, from bakers and cooks to machinists and welders.

Our neighbouring province, Alberta, is the only province listing “Steel Detailer” as a “Designated Occupation” under its Apprenticeship and Training Act. (Ontario does list Mechanical Draftsperson as a trade where apprenticeship training is recommended). Alberta’s certification of steel detailers is voluntary and not a requirement to work in Alberta.

Looking at Alberta’s “Standards for the Occupation of Steel Detailers”, they have established 3 levels of performance appropriately named; Steel Detailer - Level 1, Steel Detailer - Level 2 and Steel Detailer - Level 3. To obtain an “Alberta Occupational Certificate” requirements include post secondary education, on-the-job training, a Registrars Letter from the National Institute of Steel Detailing (NISD), and the passing of an industry exam. Inclusion of the NISD certification forms an international link for steel detailers which could help detailers seeking work in the United States.

More information on the Red Seal Program can be located on their website at www.red-seal.ca which has links to all the provinces and territories programs. The SDIBC board would appreciate your comments or opinions.

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SDIBC Welding Seminar, Sept 6th 2006 by: Hector Medina 

As an on-going attempt to keep both our members and non-members informed of various aspect of the construction industry, SDIBC was proud to have hosted our first welding seminar on Sept.6. We had a great turn-out by both SDIBC Members and non-members alike (about 44 in total). I’m sure everyone came away with a better understanding of welding requirements and learned about some possible pit falls to avoid.

We would like to express our special thanks to Ms. Pat Newhouse of Canadian Welding Bureau for taking time out of her busy schedule to speak to us on this topic. Also we would like to thank Dowco for providing us their facilities to host this seminar.

The main purpose of this seminar was to offer a quick overview of welding standards and some possible problem areas to avoid when adding welding information to drawings. Real life examples were presented to demonstrate what incorrect or misinterpreted welding symbols could cost the customer.

As construction costs escalate, having the correct weld on a connection can help the customer save both time and money and still maintain the design load of the connection. An example of this would be Submerged Arc Welding with its deep penetrating capacity that can provide the same design load with a much reduced electrode size.

Ms. Newhouse provided us with a quick overview of some basic standards relating to various types of welds, such as the Fillet, Flare bevel, Partial & Complete Penetration welds and more. She also reviewed the “perils of over welding.” which can add distortion and residual stress and of course added cost. Another point she stressed was the accessibility issue. Making sure there is sufficient access to apply the weld. Often welding problems arise when inexperience detailers call out welds that do not work for a certain situation. These problems are sometimes missed by the shop as well. The all around weld is a great example of this. The example she had given us was a detail of this miscellaneous piece in which the detailer had call out an around weld when 3 sided weld would do. This may not sound like such a big deal except the quantity of this miscellaneous piece was in the hundreds. A simple weld change here could have save the customer thousands of dollars.

I don’t think anyone came away from this without learning something new about welding that they didn’t know before. Thanks again to the CWB and Ms Pat Newhouse.
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Fastener Seminar  

SDIBC held its second seminar on fasteners sponsored by Hilti Canada Corporation. Those of us that were fortunate to be able to attend due to limited seating saw a very informative seminar. Roberto Risman , CTR, P.Eng of Hilti arranged an afternoon seminar on Fasteners at their Burnaby Facilities. A power point presentation was given on Anchor Theory, Hilti Mechanical & Adhesive anchors with a question & answer period that followed. A display of different fasteners gave our steel detailers a better idea of what’s new in the industry. As the grade of steel has gone up in strength so too have gotten the strength of fasteners that connect our steel. In some lightly loaded building conditions, adhesive anchors are favor over the old traditional embedded anchors rods. Although the adhesive anchor are more expensive than the threaded embedded anchor rods, the time saved for completing project ahead of schedule can make up the cost difference.

I would again like to thank Roberto and Hilti on behalf of the Steel Detailing Institute of B.C. in arranging the seminar on Fasteners and the use of their facilities. Scheduling the seminar on weekday after working hours and volunteering his our own time and staff was greatly appreciated.
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SDIBC Bending Seminar  

SDIBC held its bending seminar/workshop tour on Oct.21, 2006 at Advance Bending Technologies Inc. We had another great turn out for this popular seminar from our SDIBC members & non-members. Brad Miller and Rod
Pare’ of Advance Bending gave their familiar power point presentation follow by a shop tour. Brad demonstrated their newly acquired Induction Bender. The induction bender works in simple terms by passing a huge electrical current through a coil ring which in terms super heats the pipe being bent around the inside of the coil ring. The temperature of the coil ring is control and monitor carefully. As the thin band around coil becomes super heated, the bender applies hydraulic pressure to bend the pipe. Bending steel and other shapes is becoming more of an art form and practical science these days. Understanding material strengths and watching how steel gets bent has given our steel detailers a better appreciation of what happens when bending is required. I would like to thank Brad Miller & Rod Pare’ of Advance Bending Technologies Inc. again for the use of their facilities and volunteering their valuable time. Without Advance Bending continued support, we would not be able to have these kinds of seminars.
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2006 Golf Tournament  

The annual golf classic was held at Fort Langley Golf Club, last August 25th . The 48 participants combated the hot weather and put in a hard days work before ending at the 19th for some cool refreshments. Once again the event was won by the team from Truline. Cliff & Rick have exercised their privilege as tournament champions and once again have selected Fort Langley as the site of this year’s tournament. Remember to Book off Friday, August 24th . Entry fee is a flat $100.00 and includes the same wonderful meal. A special thanks to these corporate sponsors, ASTTBC, Advanced Bending, A.J. Forsyth, Canron, Empire Iron works and Solid Rock for the prizes they donated to our event. They were very much appreciated by all of us as were the dozens of prizes form the participating detailing companies and individuals.
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Disclaimer
Views and opinions expressed in the SDIBC newsletter are those of the author for the specific article and do not necessarily reflect the opinion or position of SDIBC. Any use of the published information is at the reader's discretion on the basis of 'as is'. SDIBC assumes no liability for any claims arising from the use or application of information published in the newsletters.
 

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