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HomeMy WebLinkAboutStairs Specificationsr HANDRAIL GRIP SIZE 141. 41 i,• _ 2• 2;• max. �'' � A* I E 5 Aw rtdn. �m NONCIRCULAR CIRCULAR RECESSED 0311,543Type tJ LR311,5,6.3 Type II} *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. 2X2BALUS MIN. (3) SIMPSON'S SDS 1/4" X 4-1/2" — WOOD SCREWS FOR RIM JOIST TO POST CONNECTION, (5) 16d NAILS OR EQUIVALENT 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) NOTE: CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING ALL DIMENSIONS AND CONDITIONS PRIOR TO CONSTRUCTION. s=o' MAP T. 5/4" X 6 BOARD RAIL CAP OPENINGS SHALL NOT ALLOW -THE' PASSAGE OF A 4" DIAMETER SPHERE . T. 2X6 (1) 2 X 6 P.T. ATTACHED TO POSTS USING (5) 16d NAILS OR EQUIVALENT AT EACH 2X6 TO POST CONNECTION. NOTES 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. THE MINIMUM TREAD DEPTH SHALL BE 10 INCHES. THE TREAD DEPTH SHALL BE MEASURED HORIZONTALLY BETWEEN THE VERTICAL PLANES OF THE FOREMOST PROJEI 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. 2 X 4 TOP & BOTTOM ATTACHED TO 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. ATTACH BALUSTERS TO TOP & BOTTOM W/ MIN. (1)#8 WOOD SCREW OR EQUIV. orl 143 o�f`f �Ws 4160\ 1� CONCRETE OPTION: IF STEPS ARE INSTALLED ON EXISTING CONCRETE, THE GROUND ANCHORS, TIEDOWN STRAP AND ANGLE BRACKET 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. (3) 2 X 12 P.T. STAIR STRINGERS ALL STAIR COMPONENTS TO BP PRESSURE TREATED LUMBER ALL FASTENERS IN CONTACT WITH P.T. LUMBER TO 'BE HOT DIP GALVANIZED OR STAINLESS STEEL IL — 8 These plans and specifications o a = W convoy +oath Section 1609 of the p w �S ` 2gD10. FBGesidentrat j `Vyl tl`- LTII .. E, ND SPEED = 170 MPH 1 `(EFIS�CC�TEROG. II BUILDING) .i'ce�^^"'':� .OMINAL DESIf3tJ uYiwO SPEED`= 132 MPH (CATERGOitYIGHFH}OINGr_ Drawing Number. i / ' ,- _ _ !� • STEP CONSTRUCTION _ � fi l ' Legna p c�eotff.INo d 4+ , "_ '. ' YvZ7 1 RBI rR 2lSiSpen,St'e:160 smyb Engineering Services Hl r^! f** _ esX ;;lv53 319 s. scenk Hwy, sm.100 ice. 861a689-6980 Lake Wales, FL 33853 Fax: 1-866-865-2044 _ _ _ Oiflse: 883-50 © COPYRIGHTT 2011 7011 J