Steel Bearing Plates
ASTM A36 or A572
Williams steel bearing plates, available in Grades 36 or50, are standard with a round hole or dished plates for use with spherical hex nuts. They can be drilled to provide free access for grout tube entry. Bearing plates are customized for each application. Plate dimensions should be specified around the parameters of the project. In addition, corrosion protection should be considered along with specifying hole diameter, bar angle and duct size.
|1” to 1-3/8”
(26 to 36 mm)
Spacer Nut for Pocket Former
Local Zone Reinforcing
The compressive strength of the concrete in the local zone (area directly under the bearing plate) can be enhanced when necessary by use of lateral confinement of spiral reinforcement. The rebar spirals are available in #3 through #5 diameters of Grade 60 Rebar and made to the project design requirements for diameter, pitch, and length. They are also available with or without a deformation pattern.
Galvanized Metal Corrugated Duct
Williams Galvanized Spiral Metal Duct is typically used for internal PT tendons, and meets all physical and structural recommendations for post tensioning duct as indicated by the Post Tensioning Institute. TheDuct is available in 2”, 3”, and 4” diameter with couplings and reducer couplings for all sizes.
Polypropylene Corrugated Duct
Polyethylene Corrugated Duct
ASTM F405, ASTM D4104
The stable characteristics of Williams polypropylene & polyethylene duct are normally preferred where additional corrosion protection is desirable. Polypropylene Duct has been approved by the Florida DOT for internal tendons and is available in 2-3/8” internal diameter. Polyethylene Duct is available in 2”, 3”, and 4” diameters. Couplings are available for all sizes