We’re pleased to announce that our Composite Strengthening Systems (CSS) code report, ESR-3403, has been revised to recognize Simpson Strong-Tie fiber-reinforced polymers (FRP) for concrete diaphragm applications. These FRP fabrics can be used to strengthen diaphragms for in-plane shear, flexure (chords), and axial tension (collectors) to resist seismic or wind loading.
Many of you reading this may already be familiar with our Strong-Wall site-built portal frame system, or PFS for short. Simpson Strong-Tie launched the PFS last spring to provide designers, builders and contractors in prescriptive markets with a simple and cost-effective solution to meet code-prescribed wall bracing requirements for narrow wall widths.
Design criteria for cracked-concrete masonry units are finally available for adhesive anchors.
It has been over 15 years since cracked concrete changed the way anchorage to concrete was qualified and designed. The ICC International Building Code (IBC) 2003 referenced American Concrete Institute (ACI) 318-02 Appendix D as a design provision for both cast-in-place and post-installed anchors into concrete. Appendix D was the first introduction of cracked concrete to designers. These design provisions required mechanical anchors to be qualified per ACI 355.2, which mandated testing of anchors in cracks. The Masonry Society (TMS) 405 has not addressed cracks in concrete masonry units since the code’s introduction to concrete in 2003. The Concrete and Masonry Anchor Manufacturers Association (CAMA) has taken on the task of introducing cracked masonry unit testing, qualification and design by updating Acceptance Criteria AC58. These criteria were developed to address the testing and qualification of adhesive anchors in grouted, hollow, and partially grouted concrete masonry units, as well as in brick masonry units.
The Simpson Strong-Tie® 2019–2020 Wood Construction Connectors catalog is the first in the industry with updated connector allowable load tables to meet the new ASTM test standards required by the 2015 and 2018 International Building Code® (IBC®). It is designed to assist engineers, architects, Designers and contractors in selecting the right products for improved performance, efficiency and productivity. This blog post provides in-depth background about how we re-evaluated our connectors to meet the new standards.
Happy new year! A new year brings new developments on the Building Code front. A summary of relevant code activities follows.
When properly enforced, building codes are very effective for ensuring that buildings meet certain minimal requirements for strength and safety. Recent studies by the National Institute of Building Sciences (NIBS) have shown, however, that additional risk-mitigation measures can be beneficial even in proportion to the added costs. In the following post, Randy Shackelford, P.E., of Simpson Strong-Tie, shares some of the NIBS 2017 study benefit-cost results for two mitigation types — building beyond minimum code requirements, and federal mitigation grants.