Scope of Work and Technical Specification - UP Baguio
Scope of Work and Technical Specification - UP Baguio
Scope of Work and Technical Specification - UP Baguio
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The Contractor shall excavate the foundations to the specified side slopes <strong>and</strong> depths shownon the drawings, after which the <strong>UP</strong> <strong>Baguio</strong> will conduct tests on the underlying material belowfoundation grade to determine the actual bearing capacity at such depth. If the required bearingcapacity is not attained, the <strong>UP</strong> <strong>Baguio</strong> shall instruct the Contractor to excavate further downuntil, in the opinion <strong>of</strong> the <strong>UP</strong> <strong>Baguio</strong>, bearing capacity is adequate to sustain the applied loadon the foundation. Compliance to such instruction shall not entitle the Contractor fal excavated.For purposes <strong>of</strong> measurement, the applicable paylines for the excavation under this conditionor situation shall be as shown on the drawings showing paylines for excavation <strong>and</strong> specialfoundation materials.c. Drainage <strong>and</strong> Sewerage PipesThe width <strong>of</strong> trench excavation for drainage <strong>and</strong> sewerage pipes shall be as indicated on thedrawings. All trench bottoms shall be excavated to the foundation grade whether foundationmaterial is rock or earth.d. Water Supply PipesTrenches for main or feeder lines shall be excavated to a depth <strong>of</strong> 0.25 meter on open ground<strong>and</strong> 0.60 meter under roadways <strong>and</strong> parking areas, both depths measured from the gradedsurface. Service pipes shall be buried to a depth <strong>of</strong> 0.15 meter below grade line.Structural Foundation FillNo fill materials shall be placed in any part <strong>of</strong> the fill foundation unless the foundations havebeen inspected <strong>and</strong> approved by the <strong>UP</strong> <strong>Baguio</strong>. Fill materials shall be placed <strong>and</strong> spread inlayer covering the entire length <strong>and</strong> breadth <strong>of</strong> the section under construction, <strong>and</strong> compactedthoroughly to the desired compaction to be determined by the <strong>UP</strong> <strong>Baguio</strong>. No succeeding layershall be placed until the previous layer has been tested <strong>and</strong> approved <strong>of</strong> its compaction by the<strong>UP</strong> <strong>Baguio</strong>.Special FoundationsIf unsuitable material is encountered or if the foundation material is unsuitable such that therequired bearing capacity <strong>of</strong> the foundation is not attained at the required elevation, furtherexcavation shall be performed by the Contractor Excavated materials below foundation gradeshall be replaced at the direction <strong>of</strong> the <strong>UP</strong> <strong>Baguio</strong>, either by lean concrete or by selectedmaterials as mentioned in Selected materials shall be placed in 15-cm. required bearingcapacity.Backfill1. Structures, Other Than Pipeslayers <strong>and</strong> compacted to the Excavated areas around structures shall be backfilled withapproved materials in horizontal layers, each not exceeding 15cm. (6") in loose volumethickness. Each layer shall either be moistened or dried as directed <strong>and</strong> thoroughly tamped withh<strong>and</strong> tampers having a tamping area <strong>of</strong> not less than 160 cm2 <strong>and</strong> weighing not less than 20kg. The last layer shall be brought up to the level <strong>of</strong> the adjoining finished grade surface in aneat <strong>and</strong> presentable appearance. In no case shall backfill be placed around structures unless
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