12.07.2015 Views

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 209.) STRUCTURE EXCAVATIONAND BACKFILLDescription209.01 This work consists of excavating material for the construction of allstructures except those specifically designated under Section 208. The workincludes preserving channels, shoring and bracing, sealing foundations,dewatering, excavating, preparing foundations, bedding, and backfilling.Material209.02 Conform to the following Sections and Subsections:Backfill material 704.03Bedding material 704.02Concrete 601Foundation fill 704.01Seal concrete 552Unclassified borrow 704.06Construction Requirements209.03 Preparation for Structure Excavation. Clear the area of vegetationand obstructions according to Sections 201 and 203.209.04 General. Excavate trenches or foundation pits according to Subsection208.04. Excavate to foundation grade without unduly disturbing thetrench or foundation surface. Foundation grade is the elevation at the bottomof any bedding for installing the structure. Compact the foundation.209.05 Channel Preservation. Preserve channels according to Subsection208.05, except excavate inside separations such as dikes or sandbags.209.06 Foundation Seal. Where necessary for a foundation seal, constructa foundation seal according to Subsection 208.07.136

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