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RAIL HEIGHT & PICKETT SPACING ATTACHMENT TO STRUCTURE 4” OC Page 1 Approved by: Gwinnett County Department of Planning & Development -No Scale- Revision Date: April 2007 RAIL HEIGHT & PICKETT SPACING - NO SCALE - - NO SCALE - - NO SCALE - ATTACHMENT TO STRUCTURE PICKETTS SPACED LESS THAN 4” OC GUARD RAIL HEIGHT 36” MINIMUM SEE DETAIL “B” GUARD & HAND RAIL DETAILS, PICKETT SPACING. *DECK JOISTS SHALL MEET SPAN TABLES FOR 40 PSF LIVE LOAD. DECKING: “CUP” DOWN MINIMUM LANDING, TO BE NO LESS THAN 36” SQUARE “MINIMUM” HAND RAIL HEIGHT SHALL BE 30”-38” DECK JOIST NOTE: “MINIMUM” SIZE FOOTINGS REQUIRED ON ALL POST & COLUMNS OF THE DECK TO BE NO LESS THAN 12” X 12” X 12” DEEP. POST MAY BE EMBEDED IN CONCRETE OR PLACED BELOW GRADE WITH USE OF CORRECT MATERIAL. STAIR STRINGER PLACED “ON” LANDING NOTES: •ALL WOOD USED IN CONSTRUCTION OF DECK SHALL BE PRESSURE TREATED OR DECAY RESISTANT SPECIES. •SUPPORT POSTS USED; 4” X 4” WOOD, AND / OR 3” STEEL COLUMN, SHALL NOT EXCEED 8’-0” IN HEIGHT AND MUST BE SECURED AT TOP AND BOTTOM OF POSITION PLACEMENT . •DECKS LOCATED MORE THAN 30” ABOVE FINISHED GRADE SHALL HAVE GUARDRAILS NOT LESS THAN 36” IN HEIGHT. •ATTACHMENT BOLTS TO STRUCTURE; TO BE ½” DIAMETER, GALVANIZED HEX HEAD, OR ROUND BOX HEAD, DESIGN, WITH TWO FLAT WASHERS PER BOLT. BOLTS TO BE PLACED 12” O.C. OF BAND, WITH ONE WASHER PLACED ON EACH SIDE AND SECURED WITH NUT.. •AS PER INTERNATIONAL RESIDENTIAL CODE. NOTE: PICKETT SPACING OF “ANY DESIGN” SHALL BE SUCH THAT NO SPHERICAL OBJECT 4” OR GREATER IN DIAMETER SHOULD BE ALLOWED TO PASS BETWEEN. MINIMUM CLEARANCE OF HAND RAILS AND STEPS SHALL NOT BE LESS THAN 36” HAND RAILS & STEPS FINISHED GRADE DECKING DIAGONAL CROSS BRACES ON SUPPORT COLUMNS AT 45 DEGREE ANGLE WHEN USING WOOD POSTS OVER 8’ IN HEIGHT FLASHING DECKING JOIST HANGER SIDING SHEATHING BOLT & WASHER NUT & WASHER HEAD JOIST BAND JOIST STRUCTURE GALVANIZED PLATED JOIST HANGERS REQUIRED ON HOUSE SIDE. USE OF BOND TIMBER (OR LEDGER STRIP) ALLOWED ON OUTER BAND. ALL SUPPORT POSTS SHALL BE ANCHORED TO PIERS WITH GALVANIZED PLATED SUPPORTS. CONCRETE FOOTINGS, TO BE A MINIMUM OF 12” BELOW GRADE ON UNDISTURBED SOIL OR COMPACTED FILL. (FROST DEPTH) Page 2 Approved by: Gwinnett County Department of Planning & Development -No Scale- Revision Date: April 2007 RAIL HEIGHT & PICKETT SPACING - NO SCALE - - NO SCALE - PICKETTS SPACED LESS THAN 4” O.C. GUARD RAIL HEIGHT 36” MINIMUM *DECK JOISTS SHALL MEET SPAN TABLES FOR 40 PSF LIVE LOAD. FLASHING IS REQUIRED WHERE DECKING MEETS THE HOUSE. DECKING: “CUP” DOWN MINIMUM LANDING, TO BE NO LESS THAN 36” SQUARE “MINIMUM” HAND RAIL HEIGHT SHALL BE 30”-38” GALVANIZED PLATED JOIST HANGERS REQUIRED ON HOUSE SIDE. USE OF BOND TIMBER (OR LEDGER STRIP) ALLOWED ON OUTER BAND. ALL SUPPORT POSTS SHALL BE ANCHORED TO PIERS WITH GALVANIZED PLATED SUPPORTS. CONCRETE FOOTINGS, TO BE A MINIMUM OF 12” BELOW GRADE ON UNDISTURBED SOIL OR COMPACTED FILL. (FROST DEPTH) DECK JOIST NOTES: •ALL WOOD USED IN CONSTRUCTION OF DECK SHALL BE PRESSURE TREATED OR DECAY RESISTANT SPECIES. •SUPPORT POSTS USED; 4” X4” WOOD, AND / OR 3” STEEL COLUMN, SHALL NOT EXCEED 8’-0” IN HEIGHT, AND MUST BE SECURED AT TOP AND BOTTOM OF POSITION PLACEMENT . •DECKS LOCATED MORE THAN 30” ABOVE FINISHED GRADE, SHALL HAVE GUARDRAILS NOT LESS THAN 36” IN HEIGHT! •DECK MUST BE BOLTED TO HOUSE WHEN USING BRICK VENEER CONSTRUCTION. 4’ O.C. •ONE & TWO FAMILY BRICK VENEER DWELLING & MOBILE HOMES ONLY. •AS PER INTERNATIONAL RESIDENTIAL CODE. NOTE: PICKETT SPACING OF ANY DESIGN SHALL BE SUCH THAT NO SPHERICAL OBJECT GREATER THAN 4” IN DIAMETER SHOULD BE ALLOWED TO PASS BETWEEN. MINIMUM CLEARANCE OF HAND RAILS AND STEPS SHALL NOT BE LESS THAN 36” HAND RAILS & STEPS FINISHED GRADE STAIR STRINGER PLACED “ON” LANDING DIAGONAL CROSS BRACES ON SUPPORT COLUMNS AT 45 DEGREE ANGLE WHEN USING WOOD POSTS OVER 8’ IN HEIGHT. SEE DETAIL “B” GUARD & HAND RAIL DETAILS. PICKETT SPACING DECKING DECK MUST BE STRUCTURALLY INDEPENDENT & FREE-STANDING! DECKING BRICK BOLT & WASHER HEAD JOIST NUT & WASHER BAND JOIST JOIST HANGER NOTE: “MINIMUM” SIZE FOOTINGS REQUIRED ON ALL POST & COLUMNS OF THE DECK TO BE NO LESS THAN 12” X 12” X 12” DEEP. POST MAY BE EMBEDED IN CONCRETE OR PLACED BELOW GRADE WITH USE OF CORRECT MATERIAL. FLASHING Page 3 Gwinnett County Planning & Development Department, Lawrenceville, Georgia STAIR, LANDING AND RAILING DESIGN REQUIREMENTS HAND & GUARDRAILS International Residential Code for One & Two Family Dwellings INTERIOR HANDRAIL REQUIREMENTS: Handrails having minimum and maximum heights of 30 inches and 38 inches (762 mm and 965 mm) respectively, measured vertically from the nosing of the treads, shall be provided on at least one side of stairways of 30 inches (762 mm) or more in height. Spiral stairways and winders shall have the required handrail located on the outside radius. All required handrails shall be continuous the full length of the stairs excluding the landings. Ends shall be returned or shall terminate in newel posts or safety terminals. Handrails projecting from a wall shall have a space of not less than 1-1/2” inches (38 mm) between the wall and the handrail. Exceptions: 1. Handrails may be interrupted by a newel post at a turn. 2. The use of a volute, turnout or starting easing shall be allowed over the lowest tread. 3. Handrails may be interrupted within the width of a tread where the wall configuration changes. Handrail grip size: Handrails shall have either a circular cross section with a diameter of 1-1/4 (32 mm) to 2 inches (51 mm), or a noncircular cross section with a perimeter dimension of at least 4 inches (102 mm) but not more than 6-1/4 inches (159 mm) and a largest cross section dimension not exceeding 2-3/4 inches (69.9 mm). Edges shall have a minimum radius of 1/8 inch (32 mm). Porches, Balconies or raised floor surfaces located more than 30 inches (762 mm) above the floor or grade below shall have guardrails not less than 36 inches (914 mm) in height. Open sides of stairs with a total rise of more than 30 inches (726 mm) above the floor or grade below, shall have guardrails not less than 34 inches (864 mm) in height measured vertically from the nosing of the treads. Exceptions: 1. Interior open stairways that are equal to or less than 12 feet in height, the guardrails shall not be less than 30 inches (762 mm) in height measured vertically from the nosing of the treads. Required guardrails on open sides of stairways, raised floor areas, balconies and porches shall have intermediate rails or ornamental closures which do not allow passage of an object 4 inches (102 mm) or more in diameter (See Figure 1.) Exceptions: 1. The triangular openings formed by the riser, tread and bottom rail of a guard at the open side of a stairway, may be of such a size that a sphere 6 inches (153 mm) cannot pass through. Hand & Guardrails to be constructed to resist a single concentrated load of 200 pounds applied in any direction at any point along the top. Figure 1. Handrail and Pickett Spacing.
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