USA, CA, UK, AUS. 4.3 Weatherproofing of exterior surfaces above and below grade is required. Spans shall be per Tables R802.4(1) & (2) for ceiling joists and Tables R802.5.1(1) & (2) for rafters. The more you know, the better your deck and backyard projects will be! Step by step explanation ! 1500 LB/sq.ft. Chapter 7 of the Sonoma County Code is hereby amended as follows: (a) Section 7-3, Local appeals board and housing appeals board is revised to read: Sec. In Kind Repairs Water Heaters Electrical Upgrades, PermitSonoma-BuildingInspection@sonoma-county.org, Building and Fire Code Updates - Effective January 1, 2020, View Latest Technical Bulletins for the New Codes, Wood Burning Handbook California Air Resources Board, Updates Coming to Sonoma County Building & Fire Codes. Ledger board width must be => deck joist width but =