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HomeMy WebLinkAboutSTAIRS SPECIFICATIONSHANDRAIL GRIP SIZE Y I NCINCIRCULAR CIRCULAR Rwilmeler:4' Sya 1," �7, 2. 4 RECESSED Perimeter: :;�6' *HANDRAIL HEIGHT, MEASURED VERTICALLY FROM THE SLOPED PLANE ADJOINING THE TREAD NOSING, OR FINISH SURFACE OF RAMP SLOPE, SHALL BE NOT LESS .THAN 34 INCHES AND NOT MORE THAN 38 INCHES. *HANDRAIL SHALL BE PROVIDED ON AT LEAST ONE SIDE OF EACH CONTINUOUS RUN OF TREADS OF FLIGHT WITH FOUR OR MORE RISERS. *HANDRAIL ASSEMBLIES AND GUARDS SHALL BE DESIGNED TO RESIST A LOAD OF 50 PLF APPLIED IN ANY DIRECTION AT THE TOP AND TO TRANSFER THIS LOAD THROUGH THE SUPPORTS TO THE STRUCTURE. *HANDRAILS FOR STAIRWAYS SHALL BE CONTINUOUS FOR THE FULL LENGTH OF THE FLIGHT, FROM A POINT DIRECTLY ABOVE THE TOP RISER OF THE FLIGHT TO A POINT DIRECTLY ABOVE THE LOWEST RISER OF THE FLIGHT. HANDRAIL ENDS SHALL BE RETURNED OR SHALL TERMINATE IN NEWEL POSTS OR SAFETY TERMINALS. HANDRAILS ADJACENT TO A WALL SHALL HAVE A SPACE OF NOT LESS THAN 1-1/2 INCHES BETWEEN THE WALL AND THE HANDRAILS. 2.X 2 BALUS MIN. (3) SIMPSON'S SDS 1/4" X 4-1/2" — WOOD SCREWS FOR RIM JOIST TO POST CONNECTION, (5) 16d NAILS OR EQUIVALENT P.T. STEP LANDING FLOOR FASTENED TO HOST FLOOR MEMBERS USING SIMPON'S 1/4" X 3-1/2" SDS WOOD SCREWS OR EQUIV. AT 12" O.C. STAGGERED SCREW PATTERN 2X6 P.T. LANDING CONSTRUCTION 16" O.C. FLOOR JOISTS USING (5) 16d NAILS OR EQUIVALENT AT EACH JOIST TO RIM JOIST CONNECTION. 30" GROUND ANCHOR W/ TIE DOWN STRAP STRAP TO WRAP AROUND P.T. 2 X 6 TIGHTLY (DO NOT OVER TENSION STRAPS) (EACH SIDES OF LANDING) aCANNED BY rvy STAIR TREAD AND RISERS THE MAXIMUM RISER HEIGHT SHALL BE 7-3/4 INCHES. THE RISER SHALL BE MEASURED VERTICALLY BETWEEN LEADING EDGES OF THE ADJACENT TREADS. THE GREATEST RISER HEIGHT WITHIN ANY FLIGHT OF STAIRS SHALL NOT EXCEED THE SMALLEST BY MORE THAN 3/8 INCH. OPEN RISERS ARE PERMITTED PROVIDED THAT THE OPENINGS LOCATED MORE THAN 30 INCHES, AS MEASURED VERTICALLY, TO THE FLOOR OR GRADE DO NOT PERMIT THE PASSAGE OF A 4—INCH DIAMETER SPHERE. THE MINIMUM TREAD DEPTH SHALL BE 10 INCHES. THE TREAD DEPTH SHALL BE MEASURED HORIZONTALLY BETWEEN THE VERTICAL PLANES OF THE FOREMOST PROJECTION OF ADJACENT TREADS AND AT A RIGHT ANGLE TO THE TREAD'S LEADING EDGE. THE GREATEST TREAD DEPTH WITHIN ANY FLIGHT OF STAIRS SHALL NOT EXCEED THE SMALLEST BY MORE THAN 3/8 INCH. � THE RADIUS OF CURVATURE AT THE LEADING EDGE OF THE TREAD SHALL BE NO GREATER RETHAN 9/16 INCH. A LL BE PROVIDED IS ON AOMNAIRW OFSING NOT WITH INCHES. S THAN RISERS. 4 INCH UNOSING T NOT IS NOT REQUIREORE THAN D4WH RESIT THE GUARDS MAYBE WOOD, ALUMINUM, VINYL, OR EQUIVALENT. ,V-o" TYP. T. 5/4" X 6 BOARD RAIL CAP MAX OPENINGS SHALL NOT ALLOW THE PASSAGE OF A 4" DIAMETER SPHERE 3'-0" LANDING HEIGHT = 5 STEPS (MIN.) 4'-0" LANDING HEIGHT = 7 STEPS (MIN.) 2 X 4 TOP & BOTTOM ATTACHED TO 5'-0" LANDING HEIGHT = 8 STEPS (MIN.) TO POSTS WITH (2)#8 WOOD SCREWS ON INSIDE FACE. OPENINGS FOR REQUIRED GUARDS ON THE SIDE OF STAIR TREADS SHALL NOT ALLOW A SPHERE 4-3/8" TO PASS THROUGH. STAIR AND LANDING ILLUMINATION REQUIRED ATTACH BALUSTERS TO TOP & BOTTOM W/ MIN. (1)#8 WOOD SCREW OR EQUIV. CONCRETE OPTION: ".T. 2X6 IF STEPS ARE INSTALLED ON EXISTING CONCRETE, THE GROUND ANCHORS AND TIEDOWN STRAP CAN BE OMITTED. THE P.T. 4 X 4 POSTS SHALL BE ANCHORED TO THE EXISTING CONCRETE SLAB USING SIMPSON'S L-BRACKET OR EQUIVALENT, (1) 2 X 6 P.T. ATTACHED TO POSTS USING (5) 16d NAILS OR EQUIVALENT AT EACH 2X6 TO POST CONNECTION. (3) 2 X 12 P.T. STAIR STRINGERS ATTACHED TO P.T. LANDING USING SIMPSON'S LSC ADJUSTABLE STAIR STRINGER OR EQUIV. N OTE: CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING ALL DIMENSIONS AND CONDITIONS PRIOR TO CONSTRUCTION. ALL STAIR COMPONENTS TO BE PRESSURE TREATED LUMBER ALL FASTENERS IN CONTACT WITH P.T. LUMBER TO BE HOT DIP GALVANIZED OR STAINLESS STEEL W 30-2018 �NCEN'r ..��CENS••.cy ;f o. 56196 •; ` ATE OF Iwo- V ULT =ULTIMATE DESIGN WIND SPEED = 160 MPH VASD =NOMINAL DESIGN WIND SPEED =124 MPH (TABLE 1609.3.1) (3 second gusts) 318 S. Scenic Hwy,33Ste. 100 Lake Wales, FL8 ffic h sl G3 ax: S 5 2 E H =a v W ma H W W �m C. a�8 j R 1. .621 6e WM J -j O IL 20 (0w N Xxd � X u n- S1 STEP CONSTRUCTION Senyb Engineering Services 318 S. Scenic Hwy, Ste 100 Lake Wales, FL 33853 © COPYRIGHT 2017 J