k Install foundation anchorage per Section R403 1 6 167 Subp 7 IRC Table R404 1 1 6 Section R404 is amended by adding a new table as follows TABLE R404 1 1 6 CANTILEVERED CONCRETE AND MASONRY FOUNDATION WALLS Maximum Wall Height j feet Maximum Unbalanced Backfill Height e feet wall panel bottom plates are specified by IRC Table R602 3 1 to be attached to the floor platform using three 16d common 0 162 x 3 5 inch or 16d box 0 148 x 3 5 inch nails every 16 inches or are specified by IRC Section R403 1 6 to be anchored to the foundation with 1 2 inch diameter anchor bolts at not more than 6 feet on center IRC section R403 1 6 IRC Section R403 1 6 is amended to read as follows R403 1 6 Foundation anchorage Sill plates and walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section Modification Number IRC 2003 11 Section R403 1 6 Foundation anchorage Modification Exceptions 2 and 3 were added to the existing language The modified section will now read When braced wall panels are supported directly on continuous foundations the wall wood sill plate or cold formed steel bottom track shall beOne and Two Family Plan ReviewChecklist IRC 2015 City ofPortland Table R403 1 1 Ventilation Access Section R408 Crawls Space ONLY Anchorage Type amp Spacing Section R403 1 6 Foundation Wall Reinforcement Section R404 1 2 2 Column

From the 2012 International Residential Code IRC R403 1 6 Foundation anchorage Sill plates and walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section Wood sole plates at all exterior walls on monolithic slabs wood sole plates3 4 2019 nbsp 0183 32 quot 2012 IRC R403 1 6 Foundation anchorage Sill plates and walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section Wood sole plates at all exterior walls on monolithic slabs 10 R403 1 6 Foundation Anchorage Anchor bolts are required to be placed in the middle 1 3 of the bottom plate – bolts or approved anchor straps shall be spaced a maximum of 6 at least two per plate not more than 12 from the end of each section 11 Table R602 3 6 Alternate Stud Height prescriptive11 4 2016 nbsp 0183 32 Depending on bolt size 4 to 12 inches is a good rule of thumb Code reference is IRC 2012 R403 1 6 Foundation anchorage Solid Joist Blocking Required at Beams and Walls – Because of our seismic earthquake zone D1 lateral restraint solid blocking is required at all intermediate supports mid span beams walls and pony walls Code reference is IRC 2012 26 1 2015 nbsp 0183 32 IRC Section R403 1 6 is amended to read as follows R403 1 6 Foundation anchorage Sill plates and walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section

2009 2012 2015 2018 and 2021 International Residential Code IRC Section R401 3 Drainage Section R403 1 4 1 Frost protection Section R403 1 6 Foundation anchorage Section R403 3 Frost protected shallow foundations Section R403 3 4 Termite damage Section R404 1 4 2 Concrete foundation walls Section R405 Foundation drainageR403 1 6 Foundation anchorage Foundation anchor bolts shall be at least inch in diameter and shall extend a minimum of inches into the concrete or 25 12 2015 nbsp 0183 32 slide 1 permits amp inspections department adopting the 2006 international codes residential irc commercial ibc hvac imc plumbing ipc slide 2 important dates to 2 Section R403 1 6 Foundation anchorage This section has been modified to include the following exception Wood sole plates of braced wall panels at building interiors on monolithic slabs may be anchored using connector s with a shear capacity of 2300 pounds and a tensile capacity of 800 pounds over a maximum span of 6 feet R 403 1 6 1 Braced Panel Anchorage Shear walls shall be anchored to the foundation in accordance with Appendix AA or the reference standards in R 301 2 1 1 The shear wall connections shall be in addition to general foundation anchorage requirements R403 3 Delete R403 3 and substitute the following R403 3 Frost protected shallow foundations

2015 IRC R403 1 6 1 Foundation anchorage in Seismic Design Categories C D0 D1 and D2 Section R403 Footings Chapter 4 Foundations 22 Where the slope is steeper than 1 1 the required setback for footings must be measured from an imaginary plane to the horizontal projected upward from the toe of the slope 748 20 5 7 IRC 174 2015 Chapter 4 Foundations Chapter 4 of the IRC 174 2015 is adopted with the following modifications 1 Section R402 2 Concrete This section has been modified to include an exception for interior concrete slabs on grade and enclosed garage slabs to the requirement the concrete be air entrained The IRC prescribes anchor bol t criteria for connecting the sill plate to the foundation R403 1 6 1 68 CHAPTER 5 Foundations FIGURE 5 13A Wood sill plate anchorage to foundation for all buildings in SDCs A and B and dwellings in SDC C 8 9 2021 nbsp 0183 32 SECTION R403 1 6 4 FOUNDATION ANCHORAGE IN SEISMIC DESIGN CATEGORIES C D 0 D 1 and D 2 In addition to the requirements of Section R403 1 6 the following requirements shall apply to wood light frame structures in Seismic Design Categories D0 D1 and D2 and wood light frame townhouses in Seismic Design Category C 1 PART II – IRC Revise as follows R403 1 6 1 Foundation anchorage in Seismic Design Categories C D 0 D 1 and D 2 In addition to the requirements of Section R403 1 6 the following requirements shall apply to wood light frame structures in Seismic Design Categories D 0 D 1 and D 2 and wood light frame townhouses in Seismic Design Category C 1

23 85 R402 1 3 Restraint for Wood Foundations 23 85 R402 1 4 Dampproofing for Wood Foundation 23 85 R403 Footings Figure 23 85 403 16 Reinforced Concrete Figure 23 85 403 25 Typical Foundation And Footing Details Figure 23 85 403 29 Typical Step Footing Figure 23 85 403 31 Typical Pony Wall for Split Level24 8 2021 nbsp 0183 32 Section R403 1 6 1 Foundation Anchorage in Seismic Design Categories C D0 D1 and D2 In addition to the requirements of Section R403 1 6 the following requirements shall apply to wood light frame structures in Seismic Design Categories D0 D1 and D2 and wood light frame townhouses in Seismic Design Category C IRC Section R403 1 6 IRC Section R403 1 6 is amended to read as follows R403 1 6 Foundation anchorage Sill plates and walls supported directly on continuous foundations shall be anchored to the foundation in accordance with this section ICC Digital Codes is the largest provider of model codes custom codes and standards used worldwide to construct safe sustainable affordable and resilient structures Gravel fill used as footings for wood and precast concrete foundations shall comply with Section R403 R401 3 Drainage Surface drainage shall be diverted to a storm sewer conveyance or other approved point of collection that does not create a hazard Lots shall be graded to drain surface water away from foundation walls