#Simpson strong tie deck builder update
#Simpson strong tie deck builder code

#Simpson strong tie deck builder code

Even though more and more deck information has been incorporated into the last few editions of the IRC, there is still insufficient information in the code to be able to completely build a deck prescriptively. These details are shown in the engineering letter L-F-SDWSGRD15.ДЄ committee made up of building officials, manufacturers, deck builders, designers and other interested parties is currently developing a set of code proposals on deck construction for inclusion in the 2018 International Residential Code (IRC). So Simpson Strong-Tie again tested several framing configurations according to the AC273 criteria, using our Strong-DriveВ® SDWS TIMBER screws and additional blocking to try to prevent the post from rotating. AC273 is available for purchase through the ICC bookstore.Д®ven with the connectors being readily available, deck builders have asked for guard post connection details that do not involve the use of connection hardware. To allow evaluation of assemblies used to resist this deck guardrail force, ICC-ES developed AC273, Acceptance Criteria for Handrails and Guards. Several details were developed to try to address the various orientations of the post and deck framing. Simpson Strong-Tie subsequently developed a new tension tie, the DTT2Z, to make an economical connection from the top bolt in a deck post back into the framing of the deck to resist the high tension forces that develop in the top bolt when the top of the post is pushed outward. But rather than test in any direction, the researchers decided to test in what they considered the most critical direction: outward away from the deck.

Table 301.5 of the 2012 IRC requires that guards and handrails be designed for вЂњ single concentrated loadвЂќ of 200 pounds вЂњapplied in any direction at any point along the top.вЂќДavid mentioned the article Tested Guardrail Post Connections for Residential Decks, which described a testing program at Virginia Tech that examined the ability of various assemblies to resist this concentrated load at the top of the guard post. Section R312.1.1 of the 2012 International Residential Code (IRC) states that вЂњGuards shall be located along open-sided walking surfaces, including stairs, ramps and landings, that are located more than 30 inches measured vertically to the floor or grade below at any point within 36 inches horizontally to the edge of the open side.вЂќ The failure of this guard is a common source of injuries caused by failures of deck components.

#Simpson strong tie deck builder update

This post is an update to David FinkenbinderвЂ™s post on Guard Post Resources from August 13.ДЄs David explained, the requirements in the IRC and IBC for guards are intended to prevent people from falling off of raised surfaces.