• Welcome to the new and improved Building Code Forum. We appreciate you being here and hope that you are getting the information that you need concerning all codes of the building trades. This is a free forum to the public due to the generosity of the Sawhorses, Corporate Supporters and Supporters who have upgraded their accounts. If you would like to have improved access to the forum please upgrade to Sawhorse by first logging in then clicking here: Upgrades

irc

  1. S

    Modern stair tread code interpretation

    Hi all, We're having a code disagreement in our office I was hoping you could weigh in on. Does the stair design in the image attached meet the IRC 2021 (Connecticut)? The intention is for the stair to have a modern design, with no squared off nosing projection, with a tread depth less than...
  2. jar546

    Roof Ceiling Construction Chapter 8 of the 2021 IRC Question

    Per Section R806.5 of the 2021 IRC, when a vapor retarder is installed on the ceiling side of unvented attic assemblies, what minimum requirement is stipulated regarding the air-impermeable insulation applied in direct contact with the underside of the structural roof sheathing?
  3. jar546

    Residential Masonry Fireplace Question

    According to Section R1001.11 of the 2021 International Residential Code (IRC), what is the minimum thickness of hearth extensions in front of the fireplace opening for fireplaces with a firebox opening larger than 6 square feet?
  4. jar546

    IRC Wall Bracing R602.10 Question

    In the 2021 IRC, Section R602.10 details the requirements for wall bracing. Within this section, there's a provision for wall bracing based on a house's seismic design category and braced wall line spacing. Given a home in Seismic Design Category D2 with a braced wall line spacing of more than...
  5. jar546

    Roof Bracing for Spans Greater than 60'

    In the 2018 IRC, Section R802.10.2 speaks to the bracing of roof trusses. According to this section, when using bracing for roof trusses spanning 60 feet or greater, at what intervals should the bracing be applied?
  6. jar546

    Should the IRC/IBC Require Fire Extinguishers in Dwelling Units in the Absence of IFC Adoption

    Since the number one reason for house fires in the US is cooking, and the number one adopted codebook is the IRC, should a FE or 2 (kitchen & garage) be required for a CO?
  7. tomtomtom

    Residential components of Mixed Use - Stair Components

    We are renovating an existing second story apartment into two units, in a conforming mixed use building (two commercial units on the first floor, two apartments on the second). There is an interior stair which exits outdoors, which will serve one unit: existing no change. The second unit will be...
  8. arthurp92

    Tankless water heater in an ADU for T-24

    Building new, or converting existing detached garages to accessory dwelling units clients have been asking for tankless water heaters, but it cant seem to pass Title 24 CF1R energy requirements. Anyone been able to have a workaround to meet this code? No gas all electric builds, in California.
  9. J

    Can an IRC modular home be moved after placement in Wyoming, USA?

    Hi all, I'm having a bit of a tricky question I'm trying to solve and this seemed like a very knowledgeable group to ask. For a small bit of background: I'm a housing consultant for manufactured and modular homes. I have a client that is building in a county in Wyoming that has no adopted...
  10. T

    Residential handrail terminations

    IRC says "Handrail ends shall be returned or shall terminate in newel posts or safety terminals." 2021 IRC clarifies to "Handrail ends shall be returned toward a wall, guard walking surface continuous to itself, or terminate to a post." (I think some commas are missing there, but still...) The...
  11. jar546

    Verifying Window Compliance for Wind Loads

    This question is for most of the country that is now in the 115mph wind zone per the IRC. Please exclude Florida from this conversation as this I have a handle on. The question is this. In the past the U-factor was one of the biggest concerns when looking at windows for inland areas. With...
  12. E

    IRC single family dwelling open stairway limit

    Is there any limitation in the IRC (2012 or other) that limits the number of floors an open stair can connect in a single family dwelling?
  13. jar546

    Biggest Changes from 2011 NEC to 2014 (IRC 2012 to 2015)

    In this thread I would like to see what everyone's opinion is on the biggest changes in the residential electrical code cycle between these two. What was the biggest surprise and what caught the contractors off guard the most?
  14. jar546

    200A Combo Meter for Service with Sub-Panel in Garage

    So here we go. Hopefully we will all learn something or at least refresh our memories with this situation. Let's start with this. Below is the photo of a combo 120/240v, 200A meter and disconnect that will be mounted on a single-family residence. Let's say this gets fed from above with 4/0...
  15. Glenn

    Asphalt Shingles & The Code

    Here's a YouTube video with stories and experiences I bet many of you can relate to, roof inspections. It is the fifth video in my ICC-approved, online course, Asphalt Shingles & The Code at www.buildingcodecollege.com To those that have been around for a while...yes...I have more than just...
Top