Tag Archives: building code

Residential Code requirement for attic insulation markers

The energy portion of the residential code (N1101.12.1.1) requires the installation of depth markers when blown or sprayed-in insulation is used in the attic.  The markers are necessary to determine the initial R value of the insulation during installation, as … Continue reading

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Filed under Energy Conservation

Residential Code requirement for wall top plate

The residential building code (R602.3.2) requires the use of two top plates when constructing a wall.  The joints between the upper and lower studs cannot occur within 24 inches of each other. The code also makes an exception to the … Continue reading

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Filed under Building

Residential Code requirement for anchor bolt washer

Here is a little more information regarding my last post.  In addition to spacing and size requirements for hold-downs, the code also requires the use of specifically sized washers.  The washers must be used in conjunction with the anchor bolt … Continue reading

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Filed under Building

Residential Code requirement for foundation wall hold-downs

The residential building code (R403.1.6) requires sill plates and walls to be anchored to the foundation wall.  This is accomplished by the use of hold-downs embedded in the concrete foundation wall at fixed intervals.  Each bottom plate must be attached … Continue reading

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Filed under Building

Residential Code requirement for egress window

The building code (R310) requires an emergency escape (Window) at specific locations in a home.   These locations include basements, habitable attics and all bedrooms.  Windows must not only be large enough for occupants to escape, but also large enough for … Continue reading

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Filed under Safety

Residential Code requirement for appliance clearance in attic

The residential code lists clearance requirements for appliances in several areas of the mechanical code section.  The fist reference to clearances can be found in section M1305.1 which covers general access guidelines for all appliances. The specific requirements for appliances … Continue reading

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Filed under Mechanical

Residential Code requirement for gaurdrail

The residential code (R312.1) requires the use of guardrails when the walking surface is elevated to 30 inches or more above the adjacent grade.  The minimum height of the railing must not be less than 36 inches, except for stairs … Continue reading

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Filed under Safety

Residential Code requirement for toilet clearance

The residential building code (R307.1) (P2705.1) provides clearance requirements for bathroom fixtures in relationship to the surrounding area.  The minimum distance from the center line of a toilet to any wall, cabinet, etc. is 15” while the minimum distance in … Continue reading

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Filed under Plumbing

Residential Code requirement for appliance protection in the garage

The building code requires appliances which are located in the garage to be either elevated or protected to prevent accidental impact.  The mechanical portion of the code (M1307.3.1) does not specifically mandate the use of bollards, but does require the … Continue reading

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Filed under Mechanical

Residential Code requirement for under-floor ventilation

The building code (R408) requires ventilation for the under-floor space in a home, with the minimum size of the openings determined by the net area of the under-floor space.  The opening size must equal at least one square foot for … Continue reading

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Residential Code requirements for stair treads

The residential building code requires stairs to be built in a consistent manner.  The consistency of the treads rise and run throughout the length of the stairway, provides an even step pattern while reducing the chance for a misstep and … Continue reading

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Filed under Building, Safety

Residential Code requirement for dryer duct label

The maximum length of a dryer duct is determined by the manufacturer.  If the manufacture does not list a maximum length, the code sets the maximum length at 35 feet, which may then be further reduced by the use of … Continue reading

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Filed under Mechanical

Residential Code requirement for safety glazing near wet areas

There maybe several locations in a home that require safety glazing.  The residential code has at least seven specific instances where safety glazing must be installed due to the configuration of the surrounding construction. Section R308.4.5 addresses glazing located in … Continue reading

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Residential Code requirements for garage to dwelling seperation

There are really only two thicknesses and types of gypsum used in a residential garage.  The minimum thickness of gypsum is 1/2 inch which may be used on all walls and ceiling unless the space above the garage is a … Continue reading

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Residential Code requirement for energy certificate

The 2012 International Residential Code (IRC) now includes a whole new energy chapter.  This is a significant change from 2009 IRC which previously lacked an energy code section.  The 2012 IRC now contains a substantial amount of new code language … Continue reading

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Filed under Energy Conservation