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FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

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Section 501501.05 Preparing Roadbed. Prepare the roadbed according to Subsection303.07. Uniformly dampen the roadbed before placing the concrete. If trafficis allowed to use the prepared roadbed, check and correct the surface immediatelybefore the concrete is placed.Full-depth, full-width reconstruction shall conform to Subsection 501.13.501.06 Placing Concrete. For storing, handling, batching, and mixingmaterial and delivering concrete, conform to Subsections 552.04 through552.08 and 552.10.Do not place concrete on frozen subgrade. Place concrete with side form orslip form paving machines. Where a paving machine is impractical, placeconcrete according to Subsection 501.07.When concrete is placed adjoining a previously constructed lane of pavement,do not allow mechanical equipment to be operated on the existing lane, untilthe lane has attained a minimum flexural strength of 550 pounds per squareinch according to AASHTO T 97 or compressive strength of 3,500 pounds persquare inch according to AASHTO T 22. Protect the previously constructedlane from damage by the paving equipment.Construct reinforcing steel according to Section 554. Firmly position thereinforcement on acceptable supports before placing the concrete, or afterspreading, mechanically place or vibrate the reinforcement to the requireddepth in the plastic concrete.501.07 Construction of Irregular Areas. In irregular areas or areas inaccessibleto paving equipment, construct the pavement using side forms.Strike-off, consolidate, float, and surface finish the concrete, as follows:(a) Thoroughly and uniformly vibrate and compact the concrete duringplacement without segregating the material.(b) Using templates or screeds, strike-off the concrete to shape it to therequired cross-section between the forms. Carry a slight excess of concretein front of the leading edge of the template or screed.(c) Float the surface to the required grade and cross-section.(d) Finish the surface according to Subsection 501.09.327

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