permits & inspections department 2003 international residential code irc
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PERMITS & INSPECTIONS DEPARTMENT
2003 INTERNATIONAL RESIDENTIAL CODE
IRC
IMPORTANT DATES
• New codes will affect all plans submitted after September 1, 2005
• Any existing project or plans submitted prior to September 1 will be reviewed and inspected under old codes
• Inspections for permits issued after September 1 will be conducted under the new codes effective November 1, 2005
IRC 2003 SECTION 100
PLAN REVIEWCERTIFICATION OF MAIN STRUCTUARAL ELEMENTS AND COMPONENTS REQUIRED FOR APPROVAL
COMPLETE PLANS MUST HAVE4 ELEVATIONS FRONT, REAR, & BOTH SIDESCROSS SECTION TO ALLOW FOR ADEQUATE DETAILFLOOR PLANS FOR ALL LEVELS ONLY MINOR REVISIONS ALLOWED
R506.2.1 GARAGE SLABS EXCEEDING REQUIREMENTS MUST BE ENGINEERED>2’CLEAN SAND OR GRAVEL & 6” BASE
CODE SECTION DESCRIPTION
IRC 2003 SECTION 100
R105.7 BY LOCAL AMENDMENT
THE PERMIT HOLDER OR HIS AGENT SHALL POST THE PERMIT INSPECTION RECORD ON THE JOB SITE IN AN ACCESSABLE AND CONSPICUOUS PLACE TO ALLOW THE BUILDING OFFICIAL TO MAKE THE REUIRED ENTRIES
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
R301.5 DECK LOADS
REDUCED FROM 60 PSF TO 40 PSF
R303.3 BATHROOM MECHANICAL EXHAUST
MINIMUM 50 CFM INTERMITENT
MINIMUM 20 CFM CONTINUOUS
FANS MUST BE VENTED TO EXTERIOR OF BUILDING THROUGH ROOF OR GABLE END AND
TERMINATE WITH AN APPROVED CAP
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
R305 MINIMUM CEILING HEIGHT FOR HABITABLE AREAS
REDUCED FROM 7’6” TO 7’0”R308.4 SAFETY GLAZING
WINDOWS IN & AROUND STAIRWAYS & LANDINGS WITHIN 60” OF FLOOR
R309 GARAGE FIRE SEPARATION½” DRYWALL STANDARD5/8” TYPE X ON CEILING WITH ROOM ABOVE PLUS ½” ON ALL SUPPORTING WALLS4” STEP DOWN IS NO LONGER REQUIRED FLOOR MUST SLOPE TOWARD DOORS OR DRAIN20 MINUTE RATED DOOR MIN. SELF CLOSING NO LONGER REQUIRED
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
R310 EMERGENCY EGRESS (BEDROOMS) WINDOWS
24” CLEAR OPENING HEIGHT20” CLEAR OPENING WIDTH5.7 SQ.FT. NET CLEAR OPENING
IRC ADDRESSES SPECIFIC INFORMATION ON DESIGN OF WINDOW WELLS FOR
EMERGENCY EGRESS
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
CODE SECTION DESCRIPTION
R310 EMERGENCY EGRESS (BASEMENTS)
EMERGENCY EGRESS REQUIRED FROM ALL BASEMENT AREAS (FUTURE HABITABLE SPACE)
BEDROOMS OR SLEEPING AREAS
DOORS, STAIRWAYS, BILCO DOORS, EMERGENCY WINDOWS ARE ALL ACCEPTABLE
THIS IS NOT AN APPROVED MEANS OF EGRESS !!!
IRC 2003 SECTION 300
R311 MEANS OF EGRESS
ACCESSABLE STORAGE AREAS UNDER STAIRWAYS MUST BE DRYWALLED.
NO CHANGE IN STAIR REQUIREMENTS 8 1/4” MAX RISER 9” MAX TREAD
R312 GUARD RAILS/ HAND RAILS
MAXIMUM OPENING CHANGED FROM 6” TO 4”
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
R313.1 SMOKE DETECTORS MUST BE INSTALLED
ON ALL FLOORSIN ALL BEDROOMSVICINITY OF ALL SLEEPING AREAS
R321.1 BUILDING ADDRESSES NOW REQUIRED4” HIGH FOR SINGLE FAMILY6” HIGH FOR MULTI-FAMILYMUST BE CLEARLY VISIBLE FROM
STREET
CODE SECTION DESCRIPTION
IRC 2003 SECTION 300
R317 DWELLING UNIT FIRE SEPARATIONDUPLEX – 1 HOUR SEPARATIONTOWNHOUSES (SEMI DETACHED)
2 HR SEPARATION WALL WITH PARAPET OR INSTALLATION OF FIRE-RETARDENT SHEATHING 4’
ON EITHER SIDE OF SEPARATION WALL
NO OPENINGS PERMITTED WITHIN 4’ OF SEPARATION WALLNO SPRINKLER EXCEPTION
CODE SECTION DESCRIPTION
IRC 2003 SECTION 400
R403.1.4.1 FROST DEPTH FOUNDATIONNOT REQUIRED FOR FREE STANDING ACCESSORY STRUCTURES <= 400 SQ.FT.
PERMITS ARE NO LONGER REQUIRED FOR ACCESSORY
BUILDINGS UNDER 200 SQ.FT.
CODE SECTION DESCRIPTION
IRC 2003 SECTION 400
R404.1 FOUNDATIONSHOUSE LOCATION SURVEY REQUIRED BEFORE FOUNDATION INSPECTIONNEW TABLES BASED ON SOIL
TYPE AND BACKFILL HEIGHTSPECIFIC REINFORCEMENT REQUIREMENTS
CODE SECTION DESCRIPTION
IRC 2003 SECTION 400
CODE SECTION DESCRIPTION
IRC 2003 SECTION 400
R408.5.1 PIERS
MUST BE SUPPORTED BY EARTH ON ALL SIDES IN CRAWL SPACES
CANNOT BE FORMED ON TOP OF GROUND
CODE SECTION DESCRIPTION
IRC 2003 SECTION 400
R406 WATER/DAMP PROOFINGWATERPROOFING ONLY REQUIRED WHEN PROOF OF HIGH WATER TABLE OR SEVERE SOIL CONDITION IS SUBMITTED
ENGINEERS REPORT REQUIRED BYOPTION OF BUILDERREQUEST OF INSPECTOR
CODE SECTION DESCRIPTION
IRC 2003 SECTION 500
R502.8 SPANS, CUTTING, & NOTCHINGBASICALLY THE SAME ONLY MINOR MODIFICATIONS TO TABLES
JOIST BLOCKING OVER GIRDERSREQUIRED WHERE JOISTS DO NOT OVER LAP AT LEAST 3”EXAMPLE 12”OC TO 16”OC
CODE SECTION DESCRIPTION
IRC 2003 SECTION 600
R602.3 STUD SPACING
CODE SECTION DESCRIPTION
IRC 2003 SECTION 600
R602.3.1 STUD SPACING FOR WALLS > 10’
IRC SPECIFIES STUD SIZE & SPACING FOR WALLS
GREATER THAN 10’ FOR VARIOUS LOADING SITUATIONS
CODE SECTION DESCRIPTION
IRC 2003 SECTION 700
R7 WALL COVERINGS
EXTERIOR BRICK VENIER SUPPORT IRC OFFERS ALTERNATIVE DESIGNS THAT IF INSTALLED PER CODE ENGINEERS DESIGN IS NOT REQUIRED
CODE SECTION DESCRIPTION
IRC 2003 SECTION 800
R7 RAFTERS AND JOISTSCHANGES IN SPAN TABLESRESULTS ABOUT THE SAME ALLOWS FOR INTERPOLATION
CODE SECTION DESCRIPTION
IRC 2003 SECTION 800/900
R802.10.5 TRUSS & WALL CONNECTIONSTRUSS CONNECTIONS REQUIREDDESIGNED TO RESIST MIN. 175 POUNDS OF LIFT
R900.0 ROOF ASSEMBLIES ICE PROTECTION
REQUIRED FOR SLOPES < 4:12 30 LBS FELT OR EQUIVELANT
CODE SECTION DESCRIPTION
IRC 2003 ENERGY CODE
MARYLAND STATE ENERGY CODEAs part of the International Energy Conservation Code the state of Maryland has adopted the
Maryland Energy Code with no local amendments allowed. At this time Washington County does not perform energy code inspections, with the exception of verifying proper installation, flame and smoke developed index on exposed insulation, but recognizes the importance of energy conservation.
R316.1 FLAME SPREAD INDEX <= 25 SMOKE-DEVELOPED INDEX <= 450
R318.1 VAPOR RETARDER SHALL BE INSTALLED ON THE WARM-IN-WINTER SIDE OF
INSULATION
CODE SECTION DESCRIPTION