Load Transfer Assemblies for Transverse Joints R-40-H
A 1 1/2 " (< ") 2'-5 7/8 " 1 1/2 " (< ") 5 7/8 " DOWEL BAR SHALL BE ARC OR RESISTANCE WELDED TO BASKET AT ALTERNATE ENDS
1/2 " (TYP.) JOINT FILLER SUPPORT WIRE MAY BE CONTINUOUS OR BROKEN 5 1/2 " EXPANSION CAPS PLACED ON FREE ENDS OF DOWEL BARS (ADDED TO UNIT IN FIELD) 11" 5 1/2 " HOLE DIAMETERS SHALL BE LARGE ENOUGH TO ALLOW FREE MOVEMENT OF FIBER FILLER OVER DOWEL BAR (TYP.) (DOWEL BAR DIAMETER + 1/8 " MAXIMUM)
13'-3" FOR 14'-0" SLAB WIDTH SECTION A-A FIELD LOCATION OF STAKE 6" 11 SPACES @ 1'-0" = 11'-0" 13 SPACES @ 1'-0" = 13'-0" FOR 14'-0" SLAB WIDTH 11'-3" FOR 12'-0" SLAB WIDTH 11'-11 3/4 " FOR 12'-0" SLAB WIDTH EXPANSION JOINT FILLER 1'-0" 6" 11 SPACES @ 1'-0" = 11'-0" FOR 12'-0" SLAB WIDTH
1/2 " (TYP.) (TYP.) PLAN VIEW OF EXPANSION JOINT ASSEMBLY 13'-11 3/4 " FOR 14'-0" SLAB (SHIFT ASSEMBLY A MAXIMUM OF 6" OFF CENTER 12'-0" WIDTH) STAKE SHALL ENGAGE BOTTOM LONGITUDINAL SPACER WIRE. AFTER STAKING, THE BOTTOM LONGITUDINAL SPACER WIRE SHALL CONTACT BASE MATERIAL ALONG ITS ENTIRE LENGTH. FOR NON-PENETRABLE PAVEMENT BASES, PERMANENT CONCRETE ANCHORS AND STACKING SLIPS SHALL BE USED TO SECURE ASSEMBLY TO BASE, AS APPROVED BY THE ENGINEER. NOTE: FILLER SPACER WIRE MAY BE LOCATED ABOVE OR BELOW TOP LONGITUDINAL WIRES PLACE FILLER SPACER WIRE MIDWAY BETWEEN DOWEL BARS (DIMENSION MAY BE MODIFIED TO FACILITATE FABRICATION, PROVIDED A MINIMUM CLEARANCE OF 2" IS MAINTAINED BETWEEN DOWEL BAR AND FILLER SPACER WIRE. MAXIMUM UNSUPPORTED LENGTH SHALL NOT EXCEED 12") A 1/4 " DEEP CUT SHALL BE MADE ON BOTH SIDES OF EXPANSION JOINT FILLER 4" FROM EACH END, SO ENDS MAY BE REMOVED WHEN NECESSARY 5 7/8 " MAXIMUM NOM. DIA. 0.177" FILLER SPACER WIRE (TYP.) (MINIMUM 22 REQUIRED) 1 1/2 " (< ") 1 1/2 " (< ")
1/2 PAVEMENT THICKNESS (< 1/2 ") A PAVEMENT THICKNESS MINUS 3" DOWEL BAR (TYP.) 1" JOINT FILLER FILLER SUPPORT WIRE SHOULD NOT EXTEND BEYOND THE LONGITUDINAL SPACER WIRE NOTE: FOR NON-PENETRABLE PAVEMENT BASES, 1/2 THICKNESS (< 1/2 ") DIMENSION SHALL BE MEASURED FROM THE BOTTOM OF PROTRUDING LEG SIDE SUPPORT WIRE TO THE CENTER LINE OF DOWEL.
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION Kirk T. Steudle BUREAU OF HIGHWAY DEVELOPMENT STANDARD PLAN FOR
Michigan Department of Transportation LOAD TRANSFER ASSEMBLIES PREPARED APPROVED BY: ENGINEER OF DELIVERY BY FOR TRANSVERSE JOINTS DESIGN DIVISION
B.L.T. DRAWN BY: SHEET 9-10-2010 7-19-2010 APPROVED BY: R-40-H CHECKED BY: W.K.P. 1 OF 4 ENGINEER OF DEVELOPMENT F.H.W.A. APPROVAL PLAN DATE A 1 1/2 " (< ") 1 1/2 " (< ") DOWEL BAR SHALL BE ARC OR RESISTANCE WELDED TO BASKET AT ALTERNATE ENDS
13'-3" FOR 14'-0" SLAB WIDTH SECTION A-A FIELD LOCATION OF STAKE 13 SPACES @ 1'-0" = 13'-0" FOR 14'-0" SLAB WIDTH 11'-3" FOR 12'-0" SLAB WIDTH 11 SPACES @ 1'-0" = 11'-0" FOR 12'-0" SLAB WIDTH STAKE SHALL ENGAGE BOTTOM LONGITUDINAL SPACER WIRE. AFTER STAKING, THE BOTTOM LONGITUDINAL SPACER WIRE SHALL CONTACT BASE MATERIAL ALONG ITS ENTIRE LENGTH. FOR NON-PENETRABLE PAVEMENT BASES, PERMANENT CONCRETE ANCHORS AND STACKING SLIPS SHALL BE USED TO SECURE ASSEMBLY TO BASE, AS APPROVED BY THE ENGINEER. PLAN VIEW OF CONTRACTION JOINT ASSEMBLY NOTE: SHIPPING TIE WIRES MAY BE LOCATED ABOVE OR BELOW TOP LONGITUDINAL SPACING WIRES. A 1 1/2 " (< ") 1 1/2 " (< ") DOWEL BAR (TYP.) SHIPPING TIE WIRE (TYP.) 6 WIRES FOR 12'-0" SLAB WIDTH 7 WIRES FOR 14'-0" SLAB WIDTH LOCATED BETWEEN EVERY OTHER DOWEL BAR
MICHIGAN DEPARTMENT OF TRANSPORTATION BUREAU OF HIGHWAY DEVELOPMENT STANDARD PLAN FOR
LOAD TRANSFER ASSEMBLIES FOR TRANSVERSE JOINTS
SHEET 9-10-2010 7-19-2010 R-40-H 2 OF 4 F.H.W.A. APPROVAL PLAN DATE + 1" 1" 1'-6" (- 1/4 ) " MIN. MINIMUM 1 1/2 " 1" JOINT FILLER SEE NOTES SHEET 4 OF 4 (ADDED TO ASSEMBLY IN FIELD) 3" 3"
EPOXY COATING NOT NEEDED EPOXY COATED (FIXED END ONLY) DOWEL BAR
EXPANSION CAP (SEE STANDARD SPECIFICATIONS)
REMOVE FILLER SPACER WIRE BETWEEN JOINT FILLER SUPPORT
WIRES PRIOR TO INSTALLING NOM. DIA. 0.177" NOM. DIA. 0.243" THE JOINT FILLER FILLER SPACER WIRE LONGITUDINAL FILLER SUPPORT WIRE OF THE BAR 1/2 PAVEMENT NOM. DIA. 0.243" TOP OF PAVEMENT BASE JOINT FILLER SUPPORT WIRE THICKNESS (< 1/2 ") UNIFORMLY ALIGNED WITHIN 1/4 " FOR THE ENTIRE LENGTH 1/2 "
1'-7" MIN.
END VIEW OF EXPANSION JOINT ASSEMBLY
NOTE: FILLER SPACER WIRE MAY BE LOCATED ABOVE OR BELOW TOP LONGITUDINAL SPACER WIRES
+ 1" 1'-6" (- 1/4 ) "
MINIMUM 1 1/2 " 3" SEE NOTES SHEET 4 OF 4 EPOXY COATING NOT NEEDED EPOXY COATED (FIXED END ONLY) DOWEL BAR
MAXIMUM NOM. DIA. 0.177" SHIPPING TIE WIRE OF THE BAR 1/2 PAVEMENT THICKNESS (< 1/2 ")
TOP OF PAVEMENT BASE UNIFORMLY ALIGNED WITHIN 1/4 " FOR THE ENTIRE LENGTH
1'-7" MIN.
END VIEW OF CONTRACTION JOINT ASSEMBLY
NOTE: SHIPPING TIE WIRE MAY BE LOCATED ABOVE OR BELOW TOP LONGITUDINAL SPACER WIRES
2"
1 1/2 "
NOM. DIA. 0.211" WIRE 1/2 "
45^ 1'-3"
NOM. DIA. 0.319" WIRE MICHIGAN DEPARTMENT OF TRANSPORTATION BUREAU OF HIGHWAY DEVELOPMENT STANDARD PLAN FOR 1'-7" WHEN OPEN-GRADED DRAINAGE COURSE IS USED POINT IS OPTIONAL LOAD TRANSFER ASSEMBLIES
STAKE DETAIL FOR TRANSVERSE JOINTS A SINGLE WIRE MAY BE USED IN LIEU OF STAKE DETAIL SPECIFIED PROVIDED A NOM. DIA. 0.319" WIRE IS USED AND BENT INTO A HOOK AT TOP END TO CONFORM TO DETAIL SHEET 9-10-2010 7-19-2010 R-40-H 3 OF 4 F.H.W.A. APPROVAL PLAN DATE DOWEL BAR SHALL BE ARC OR SIDE SUPPORT WIRE RADIUS = RESISTANCE WELDED TO BASKET AT DOWEL BAR DIA. + 1/8 " TO 3/16 " ALTERNATE ENDS AS SPECIFIED IN 2 PLAN VIEW ON SHEET 2
NOM. DIA. 0.306" TOP LONGITUDINAL SPACER WIRE
NOM. DIA. 0.243" ARC OR RESISTANCE WELD SIDE SUPPORT WIRE
NOTES: NOM. DIA. 0.306" BOTTOM
LONGITUDINAL SPACER WIRE
3/8 " MIN. 1/2 " MAX. LOAD TRANSFER ASSEMBLIES SHALL BE PLACED AT RIGHT ANGLES TO THE PAVEMENT CENTERLINE.
THE SIDE SUPPORT WIRE (U-LEG, J-LEG OR V-LEG) MAY BE INSTALLED ON EITHER THE INSIDE OR THE OUTSIDE OF THE LONGITUDINAL SPACER WIRES. SIDE SUPPORT WIRE DETAIL THE DIMENSION FROM THE END OF THE DOWEL BAR TO THE CENTER OF THE TOP LONGITUDINAL SPACER WIRE SHALL BE A MINIMUM OF 1 1/2 ". THIS U - LEG OPTION DIMENSION APPLIES TO SIDE SUPPORT WIRES INSTALLED ON EITHER THE INSIDE OR THE OUTSIDE OF THE LONGITUDINAL SPACER WIRES.
WIRES:
DOWEL BAR SHALL BE ARC OR SIDE SUPPORT WIRE RADIUS = ALL WIRES SPECIFIED (EXCEPT SHIPPING TIE WIRES) ARE MINIMUM NOMINAL SIZES ALLOWED. (DO NOT EXCEED THE MAXIMUM NOMINAL DIAMETER OF RESISTANCE WELDED TO BASKET AT DOWEL BAR DIA. + 1/8 " TO 3/16 " ALTERNATE ENDS AS SPECIFIED IN 0.177" FOR SHIPING TIE WIRES.) 2 PLAN VIEW ON SHEET 2 ALL WIRES SHALL CONFORM TO THE CURRENT SPECIFICATIONS FOR CARBON STEEL WIRE FOR GENERAL USE, A.S.T.M. DESIGNATION A-853, GRADE 1008 OR GREATER. UNLESS OTHERWISE SPECIFIED, MINIMUM TENSILE STRENGTH REQUIREMENTS SHALL BE 60 ksi. NOM. DIA. 0.306" TOP
LONGITUDINAL SPACER WIRE ALL WIRE INTERSECTIONS ARE TO BE ARC OR RESISTANCE WELDED.
NOM. DIA. 0.243" ARC OR RESISTANCE WELD STAKES TYPICALLY APPLIED AT WORKING ENDS OF DOWELS WITH SUFFICIENT SIDE SUPPORT WIRE INSTALLATIONS TO PREVENT UNIT FROM OVERTURNING UNDER LOAD.
DO NOT CUT FILLER SPACER WIRES AFTER THE LOAD TRANSFER ASSEMBLY IS NOM. DIA. 0.306" BOTTOM SET IN PLACE. LONGITUDINAL SPACER WIRE 3/8 " MIN. 1/2 " MAX.
DOWEL BARS:
DOWEL BARS ARE TO BE ACCORDING TO THE STANDARD SPECIFICATIONS FOR CONSTRUCTION. SIDE SUPPORT WIRE DETAIL J - LEG OPTION EPOXY COATED DOWEL BARS ARE TO BE FACTORY COATED WITH A VISIBLE COATING OF AN APPROVED BOND RELEASE AGENT, UNIFORMLY APPLIED BY DIPPING AND WITHOUT EXCESSIVE DRIPS OR THICKNESS IN SUCH A THICKNESS THAT ITS PRESENCE CAN BE READILY IDENTIFIED.
METAL EXPANSION CAPS MUST BE ENTIRELY CLOSED AT ENDS BY CRIMPING.
DOWEL BAR SHALL BE ARC OR SIDE SUPPORT WIRE RADIUS = PLASTIC CAPS MUST HAVE A POSITIVE STOP. DO NOT DRIVE CAPS BEYOND THEIR STOP. EXPANSION CAPS MUST HAVE A SUITABLE STOP TO ENSURE RESISTANCE WELDED TO BASKET AT DOWEL BAR DIA. + 1/8 " TO 3/16 " ALTERNATE ENDS AS SPECIFIED IN THAT THE END OF THE CAP MAINTAINS A DISTANCE OF 1" (EXPANSION) FROM 2 PLAN VIEW ON SHEET 2 THE END OF THE DOWEL DURING CONCRETE PLACEMENT.
DOWEL BARS SHALL BE COATED WITH EPOXY COATING ACCORDING TO AASHTO SPECIFICATION M 284. CUT ENDS ARE NOT REQUIRED TO BE COATED.
NOM. DIA. 0.306" TOP DOWEL BAR DIAMETER PAVEMENT THICKNESS BEND LEG VERTICAL FOR LONGITUDINAL SPACER WIRE OUTERMOST DOWELS 1" 6" - LESS THAN 8"
1 1/4 " 8" - 10" NOM. DIA. 0.243" ARC OR RESISTANCE WELD SIDE SUPPORT WIRE 1 1/2 " GREATER THAN 10"
DOWEL BARS SHALL BE ALIGNED PARALLEL TO EACH OTHER IN THE ASSEMBLY NOM. DIA. 0.306" BOTTOM ON 1'-0" (< 1/2 ") CENTERS. LONGITUDINAL SPACER WIRE 3/8 " MIN. 1/2 " MAX. AFTER THE LOAD TRANSFER ASSEMBLY IS SET IN PLACE, DOWEL BARS SHALL REMAIN ALIGNED (PARALLEL) WITH EACH OTHER IN THE VERTICAL AND HORIZONTAL PLANES OF THE PAVEMENT TO WITHIN 1/4 " FOR THE ENTIRE 5 1/2 " LENGTH OF THE BAR.
DOWEL BARS SHALL BE PLACED AT MID DEPTH OF THE SLAB UNIFORMLY ALIGNED WITHIN 1/4 " FOR THE ENTIRE LENGTH OF THE BAR. SIDE SUPPORT WIRE DETAIL FOR PAVEMENTS WITH VARIABLE THICKNESS TRANSVERSLY ACROSS THE SLAB, V - LEG OPTION THE TOP AND BOTTOM SURFACES OF THE DOWEL BAR SHALL BE WITHIN THE
MIDDLE 3 OF THE PAVEMENT THICKNESS, AS APPROVED BY THE ENGINEER.
MICHIGAN DEPARTMENT OF TRANSPORTATION BUREAU OF HIGHWAY DEVELOPMENT STANDARD PLAN FOR
LOAD TRANSFER ASSEMBLIES FOR TRANSVERSE JOINTS
SHEET 9-10-2010 7-19-2010 R-40-H 4 OF 4 F.H.W.A. APPROVAL PLAN DATE