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These unique truss configurations require special design considerations
What is it, where did it come from, and how is it used?
Getting information up front on sprinkler systems can ease the design process.
Remember: when you calculate the fire resistance of component assemblies, you have options!
Good customers call and complain. If they’re upset with your product or service, they get you on the phone and tell you how they want it fixed. Now, there’s always negotiations that follow, but the point is that they care enough to give you a chance to make things right. The worst customers just go away without ever giving you a reason. How can you improve if you don’t know what went wrong?
When PDJ Components opened its doors for a plant tour, it was an education for everyone.
Can designing with lateral resistance in mind improve production QC?
A lot of engineering goes into the design of metal plate connected wood trusses, including the connector plates themselves.
“More often than not, if it’s a flat roof, it has a green roof on it.”
Many potential complaints and problems can be mitigated by an astute truss technician during the design phase.
Truss placement diagrams (TPDs) may be one of the more misunderstood documents in our industry.
What will happen if the plies of a multi-ply girder truss are not fastened together properly? Overloading and, potentially, chord fractures can occur.
Explore the two different methods used to calculate a wall panel’s capacity to resist applied lateral loads.
- There are many published installation guides available for product-specific applications, but few account for framing tolerances when dissimilar materials are integrated into the overall building and the expectations for overall performance.
- NFC’s Standards Development Sub-committee will begin outlining framing practices performed everyday where tolerances and known good performance have not been detailed in depth.
- The subcommittee will take a “through the eyes of a framer” point of view and provide step-by-step implementation guidelines and options.
SBCRI Testing & SBCA Research Reports can transform your market.
The purpose of this article series is to identify truss-related structural issues sometimes missed due to the day-in and day-out demands of truss design/production and the fragmented building design review and approval process. This series will explore issues in the building market that are not normally focused upon, and provide recommended best-practice guidance.
why accurate design values are so vital to structural design.
Introduction: Why the Interior Finish Installation Is Important
- Couple the IRC requirements with energy code requirements that are pushing more buildings to utilize a higher heel, and it is apparent the connection of high heels to walls is a key application issue.
- The SBC Industry Testing Task Group and the TPI TAC/SBCA E&T Testing Review and Vetting Group has begun to evaluate the needs and priority of testing the performance of assemblies to quantify the effect of heel blocking.
- It is clear from the very specific and isolated heel height testing already performed that there is an opportunity to provide revisions to 2009 and 2012 model code blocking requirements to transfer the lateral load resulting from wind and seismic events into braced wall lines.
When designed and installed correctly, components can greatly reduce the time and materials required to frame a structure.
- Use of galvanized box nails may result in shear walls with a shear capacity significantly below the nominal unit shear capacities given in SDPWS.
- Thus, the majority of WSP shear walls have a shear capacity with a high degree of design value variability. This may have unintended consequences that are unknown and unappreciated by the professional engineering and/or building design community.
- Once SBCA and SBCRI were certain their testing and engineering analysis was consistent and repeatable, they were persistent in bringing all WSP shear wall performance issues to the attention of APA, AWC, ICC-ES and ICC.
- Everyone buying raw materials for structural components or conventional framing applications is purchasing design values and related properties for use in engineering equations to resist loads for a given load path.
- It is not well known that lumber design values are global in nature and not specific to the piece of lumber being used.
- Design values written into the building code become the law, whether they are scientifically correct or not.
- If the law is treated forthrightly as written, professional engineers have great value in the market.
BCMC session evaluations indicated that the BCMC Committee hit a home run in choosing the topics they did. Take a few moments to catch up on what you might have missed at this year's show.
- When analyzing a girder truss, the Truss Designer needs to keep in mind the assumptions the truss analysis program makes regarding reaction capacities.
- It is the Building Designer’s responsibility to verify the capacity of the bearing surface, but the Truss Designer must ensure that the truss-to-bearing connection has a chance of being made without crushing.
- The article provides a series of concepts to use if a truss needs to be designed without knowing the bearing surface type and its feasibility of providing adequate support for the trusses.