FP-96 English Version - Eastern Federal Lands Highway Division

Section 552552.14 Finishing Plastic Concrete. Strike off concrete surfaces which arenot placed against forms. Float finish the concrete surface. Remove any laitanceor thin grout. Carefully tool all nonchamfered edges with an edger.Leave edges of joint filler exposed.Protect the surface from rain damage.Finish all concrete surfaces used by traffic to a skid-resistant surface. Provideat least 2 suitable and adequate work bridges.(a) Striking off and floating. For bridge decks or top slabs of structuresserving as finished pavements, use an approved power driven finishingmachine equipped with oscillating screed. If approved, use hand-finishingmethods for irregular areas where the use of a machine is impractical.Strike off all surfaces using equipment supported by and traveling on screed rails or headers. Do not support rails within the limits of the concreteplacement without approval.Set rails or headers on nonyielding supports so the finishing equipment operateswithout interruption over entire surface being finished. Extend railsbeyond both ends of the scheduled concrete placement a sufficient distanceto enable finishing machine to finish the concrete being placed.Set rails the entire length of steel girder superstructures.Adjust rails, headers, and strike-off equipment to the required profile andcross-section allowing for anticipated settlement, camber, and deflection offalsework.Before beginning delivery and placement of concrete, operate the finishingmachine over the entire area to be finished to check for excessive rail deflections,deck thickness, reinforcing steel cover, and to verify proper operationof equipment. Make necessary corrections before concrete placementbegins.391