#Hilti anchors for wood sill at concrete salb code
The report findings will be used to support a change to the International Building Code to relax restrictive provisions for anchoring of wood bottom plates to concrete for resistance to seismic forces.Īnchor strength provisions in Appendix D of American Concrete Institute (ACI) Building Code Requirements for Structural Concrete, ACI 318, establish “non-ductile” anchor design capacities that are approximately 1/3 of that historically used for 2x4 and 3x4 wood sill plates loaded parallel to the edge of the concrete. With assistance from AWC, a report on anchor bolts connecting wood sill plates to concrete with edge distances typically found in wood frame construction is complete. Wood Sill Plate Anchorage to Concrete Report Funny thing is that I can not find the report. Per the attached link a report was done on this. RE: Anchor bolts in wood sill plates msquared48 (Structural) 16 Feb 15 18:05 Has anyone dealt with this code issue before or am relegated to using a 2圆 wall? I certainly wouldn't mind it but the architect might. I'm just designing a little multi-stall garage, but it is taking a decent amount of out-of-plane load (100+ mph winds) especially at the king studs. So, whether intentional or not, the code is basically implying you cannot use 2x4 walls with anchor bolts that are subject to out-of-plane loads. So this begs the question, what do you do with 2x4 wall sill plates? Using a standard 5/8" anchor bolt centered in the wall, you don't meet the minimum 4D requirement, nor do you using the minimum 1/2" anchor bolt required by the IBC. 11.5.1.3 and Table 11.5.1.C states that the minimum edge distance needs to be 4D from the center of a bolt. In the NDS spec, section 11.5.1 deals with minimum bolt edge/end distances and spacings. Here is a strange "What was the Code thinking?" question.