Frequent Code Issues
R 308
Glazing: All fixed or operable panels over 9 square feet of glazing with the bottom edge less than 18 from the floor must have safety glazing. (Pg. 42)
R 309
Garage Fire Separation : One layer 5/8 Type X on garage side One layer 1/2 Type X other side. With living above garage, the structure supporting the separation shall also be protected by not less than 5/8 Type X drywall. (Pg. 44)
R 310
Emergency Escape: Sill height not more than 44 above floor. Above and below grade minimum net clear opening 5.7 square feet, Grade floor shall be 5 square feet. Minimum height 24, minimum width 20. Window wells minimum clear area of 9 square feet, minimum horizontal Projection and width of 36. (Pg.44)
R 314
Maximum riser height shall be 8-1/4 tread depth shall be 9. Difference in riser height shall not exceed 3/8. Nosing not less than 3/4 but not more than 1-1/4 shall be provided on stairways with solid risers. (Pg. 45)
R 314.2.1
Open riser stairs are permitted, provided that the opening between treads does not permit the passage of a 4 diameter sphere. Exceptions: The opening between adjacent treads is not limited on stairs with a total rise of 30 or less. (Pg. 45)
R 314.3
Stairways Headroom minimum headroom shall be not less than 68 (Pg. 46)
R 315
Handrails provided on 1 side of stairway with 2 or more risers. Handrail height 34 38. Ends shall be returned or terminate in newel posts. (Pg46)
R 316
Spindles shall be placed so they do not allow passage of a sphere 4 or more in diameter. Triangular openings formed by the risers, tread and bottom rail of a guard are permitted to be of such size that a sphere 6 cannot pass through. (Pg. 46)
R 323.3
Fasteners for pressure preservative and fire retardant treated wood shall be of hot-dipped galvanized steel or stainless steel. (Pg. 51)
R 402.2
Compressive strength of concrete Footers 2500 PSI Walls 3000 PSI porches, carport slabs and steps exposed to the weather and garage floor slabs shall be 3,500 PSI. All concrete shall be air entrained. Total air content shall be not less than 5% or more than 7%. (Pg. 57)
R 405.1
Drains shall be provided around all concrete or masonry foundations that retain earth and enclosed habitable or unusable spaces located below grade
Gravel or crushed stone drains shall extend at least 1 foot beyond the outside edge of the footing and be covered with an approved filter membrane material
EXCEPTION: A drainage system is not required when the foundation is installed on well-drained ground or sand gravel mixture soils according with the Unified Soil Classification System, Group I Soils. (Pg. 74)
R 502.11.4
Truss certificates shall be provided to the Code Enforcement Officer prior to installation. (Pg. 85)
R 807.1
Attic access shall be not less than 22 x 30 and shall be located in a hallway or other readily accessible location. (Pg. 243)
R 905.2.7.1
Ice Protection: Ice and water shield shall be installed that consists of at least 2 layers of underlayment cemented together or self-adhering and extend from the eaves edge to the point at least 24 inside the exterior wall line of the building. (Pg. 246)
R 1003.10
Hearth extension dimensions: Up to 6 square feet opening hearth extension shall extend at least 16 in front and at least 8 beyond each side of opening. Over 6 square feet hearth extension shall extend at least 20 in front and at least 12 on each side. (Pg. 262)
R 602.6.1
Drilling and notching of top plate: When piping or duct work is placed in or partly in an exterior wall or interior load-bearing wall, necessitating cutting, drilling or notching of the top plate by more than 50% of its width a galvanized metal tie of not less than .054 inch thick (16 ga) and 1-1/2 wide shall be fastened to each plate across and to each side of the opening with not less than 8-16d nails at each side. (Pg. 110)
M 1501.1
Clothes Dryers: Exhaust ducts shall be constructed of minimum .016 thick rigid metal ducts. Flexible ducts shall be limited to single lengths not to exceed 8. Maximum length shall not exceed 25. Maximum length of duct shall be reduced 2.5 for each 45 degree bend and 5 for each 90 degree bend. (Pg. 289)
RN11303.3
All portions of the air distribution system shall be installed with a minimum of R-8 between the duct and that portion of the assembly furthest from the conditioned space.(Pg. 272)
P 2706.2
Standpipes: The trap and fixture drain for an automatic clothes washer standpipe shall be minimum of 2 in diameter. (Pg. 371)
P 2904.9.1.3
PVC Plastic pipe: A purple primer complying with ASTMF656 shall be applied to all PVC solvent cemented joints. (Pg. 386)
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