FP-96 English Version - Eastern Federal Lands Highway Division

Section 564Package bearings so they are protected from damage due to shipping, handling,weather, or other hazards. Do not dismantle bearing assemblies at thesite except for inspection or installation.Store all bearing devices and components at the work site in a location thatprovides protection from environmental and physical damage.(d) Construction and installation. Clean the bearings of all deleterioussubstances. Install the bearings to the positions shown on the drawings. Setbearings and bearing components to the dimensions shown on the drawingsor as prescribed by the manufacturer. Adjust according to the manufacturer'sinstructions to compensate for installation temperature and future movementsof the bridge.Set bridge bearings level at the exact elevation and position. Provide fulland even bearing on all external bearing contact surfaces. If bearing surfacesare at improper elevations, not level, or if bearings cannot otherwisebe set properly, notify the CO and submit a written proposal to modify theinstallation for approval.Bed metallic bearing assemblies, not embedded in concrete, on concrete withan approved filler or fabric material.Set elastomeric bearing pads directly on properly prepared concrete surfaceswithout bedding material.Machine bearing surfaces seated directly on steel to provide a level andplanar surface upon which to place the bearing.564.04 Elastomeric Bearings. The bearings include nonreinforced pads(consisting of elastomer only) and reinforced bearings with steel or fabriclaminates.Reinforce elastomeric bearings more than 0.5 inches thick with laminatesevery 0.5 inches through the entire thickness.If not specified, use 50-durometer elastomer, capable of sustaining an averagecompressive stress of 1,000 pounds per square inch.503