Structural · S-2HWNE

Typical Thickened Slab at Base of Stairs

Materials

Concrete Steel Masonry / CMU Membrane / Roofing

Elements

Columns Walls Stairs Floors / Slabs Foundations / Footings Arches Drainage Millwork / Casework Site / Paving Anchors / Embeds Connections / Plates Reinforcing

Connections

Base Plate / Anchorage Welded Connection Bolted Connection Rebar Splice / Development Embed Plate

About this detail

A thickened concrete slab on grade at the base of a stair framing assembly is reinforced with two continuous number five bars spanning into a thickened concrete footing that extends twelve inches beyond each stair stringer. Stair attachment to the slab is provided by the stair supplier. Additional reinforcement includes number five bars at twelve inches on center within the slab on grade, and three continuous number five bars specified in the thickened section.

A A STAIR FRAMING WHERE OCCURS, SEE ARCH CONC SOG #5 AT 12"oc 1 1 (2) #5 x CONT BARS THICKENED CONC FTG, EXTEND 12" BYND EA STRINGER 3" 1'-0" 2'-0" STRINGER ATTACHMENT TO SLAB BY STAIR SUPPLIER CONC SOG #3 AT 12"oc, #3 DOWEL DRILLED AND EPOXIED W/ 3 1/2" EMBED MAY BE SUBSTITUTED AT CONTRACTORS OPTION, PULL TEST TO 5000 LBS ACI 90° HOOK 1/4" AMPLITUDE ROUGHENED JOINT OTHERWISE #4 x CONT PROVIDE ACI 180° HOOK TYPICAL CURB AT SLAB ON GRADE TYPICAL CONDUIT IN SLAB ON GRADE 1'-0" MAX 1/2" COVER 1 1/2" MAX DIA CONDUIT PLACED BENEATH REINF. MIN CLEAR BTWN CONDUITS = 3x MAX CONDUIT DIA. ADD'L #4 x 2'-0" AT 12"oc OVER CONDUIT 3" MIN COVER THICKEN SLAB TO PROVIDE 9" MAX 1'-0" TYP, UNO CONC WALL CONC SOG 3" EXTEND WALL VERTS INTO SLAB W/ ACI 90° HOOK 1/4" AMPLITUDE ROUGHENED SURFACE TERMINATE TOP BARS W/ ACI 90° HOOK 1 1 VERT REINF, SEE SCHED HORIZ REINF, SEE SCHED 1'-0" 1'-0" 6" MIN. 6" MIN. POURBACK STRIP PRE-CAST TRENCH DRAIN VERIFY W/ MECH AND ARCH DWGS CONTROL/ CONST JOINT CONTROL/ CONST JOINT TRENCH DRAIN, SEE ARCH (5) #4 x CONT POUR JOINT #4 AT 12"oc (EPOXY COATED) #4 AT 12"oc (EPOXY COATED) (5) #4 x CONT (EPOXY COATED) 1'-0" OUTSIDE FACE OF PANEL REVEAL OR RECESS WHERE OCCURS CONC TILT-UP PANEL CONC FTG ATTACHMENT ANGLE:: L4x3x3/8" x 0'-8" (LLV) EMBED ANGLE: L5x3x3/8 x 0'-10" (LLV) W/ (2) 1/2"ø x REQ'D DBA AND (2) 3/4"ø HSA x 6" AT PANEL EDGES WHERE SHOWN ON PLAN 1 1/2" NON-SHRINK GROUT EMBED PL: PL 6"x1/2"x1'-0" W/ (3) 3/4"Ø x 0'-6" HSA AT 9" GAGE AND (2) #9 A706 x 66" LONG HIGH OVERTURNING SECTION EMBED ANGLE PLAN VIEW AFTER ERECTION OF PANELS, AND WELDING OF CONNECTIONS, COAT ALL STL PLS AND ANGLES W/ 1/8" MIN BITUMINOUS CEMENT, OR POUR 4" MIN CONC COVER OVER STL AFTER WELDING, TYP HIGH OVERTURNING PANEL JOINT LAYOUT TYP PANEL JOINT OR PANEL END WHERE OCCURS 1 1/2" NON-SHRINK GROUT "d" 3" 3" 10" 2" 6" 2" VERIFY W/ ARCH TYP 1'-0" 5/16 TYP W/ 2" RETUNRS 4 4 TYP 6 6 TYP 2" 6" 2" 3" 4" 3" Ldh LEG 1'-4" MIN 4" 3" CVR 5" 5" 1 1 4" 3" MIN 1 6 4 3 2 1 NO SCALE: S503 1 TYPICAL THICKENED SLAB AT BASE OF STAIRS NO SCALE: S503 2 TYPICAL SLAB ON GRADE DETAIL NO SCALE: S503 3 TYPICAL SLAB ON GRADE TO TOP OF WALL

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