September 26, 2002La Guardia Precast Pavement Test Section Installation(photos by Shiraz Tayabji)- Sept. 26, 2002
Project Particulars!Taxiway A (3,000 ft AC pavement) at LaGuardia is
in need of rehabilitation!AC option not preferred; cast-in place PCC option
not feasible due to time constraints!Precast paving being considered
" Rehab 300 ft in each 56 hour weekend " Mill 16 in AC, prepare base, place PCC panels" Provide for light can installation
!Two 200 ft sections constructed Fall 2002" A 16 in. and a prestressed 12 in. designs
Thickness Design Conventional Precast Panels
S.I. Units English Units
Panel Dimension 3.8m x 7.6m 12.5’ x 25’
Panel Thickness 406mm 16”
Dowel Diameter 50mm 2”
Grout Bed 12.7mm ½”
Thickness Design Pretensioned Precast Panels
S.I. Units English Units
Panel Dimension 3.8m x 7.6m 12.5’ x 25’
Panel Thickness 300mm 12”
Dowel Diameter 38mm 11/2”
Steel Strands(Diameter / Spacing)
12.7mm / 600mm ½” / 24”
Grout Bed 12.7mm ½”
Details - Setting Bolt
EX I ST I N G A SP H A L T C O N C RETEC EM EN T GR O U T B EDTO REM A I N
M I L L ED SU RFA C E
SLA
B
STEEL P L A TE
STA I N L ES S STEELTH REA D ED SL EEV E
W EL D N U T TO RO D
TH REA D ED RO D (A S TM A 3 6 )
Details Dowel Slot
P RO V I D E RO U GH EN ED
EX I ST I N G A SP H A L T C O N C R ETE TO REM A I N
SU RFA C E
C EM EN T G RO U T B ED
SM O O TH D O W EL B A R
FI L L O P EN I N G W I TH C O N C RETE