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A. Requirements for all Excavation: Foundation pits shall be excavated to permit the placing of the full widths and lengths of footings shown in the plans with full horizontal beds. Corners or edges of footings shall not be rounded or undercut. All excavation shall be carried to foundation materials satisfactory to the ENGINEER regardless of the elevation shown on the plans. Unless a firm footing can be established on solid rock before such depths is reached, it shall be carried to such additional depth as may be necessary to eliminate any danger of undermining. Wherever rock bottom is secured, the excavation shall be done in such manner as to allow the solid rock to be exposed and prepared in horizontal beds for receiving the masonry. All loose and disintegrated rock or thin strata shall be removed. All foundation excavations shall be inspected and approved by the ENGINEER prior to the placing of masonry. B. Earth Excavation - Foundation Material other than Rock: 1. When masonry is to rest on an excavated surface other than rock, special care shall be taken to avoid disturbing the bottom of the excavation, and the final removal of the foundation material to grade shall not be made until just before the masonry is to be placed. In case the foundation material is soft or mucky the ENGINEER may require the CONTRACTOR to excavate to a greater depth and to backfill to grade with approved material. C. Removal of Obstructions: 1. The CONTRACTOR shall perform all excavation of whatever substances encountered to the depths indicated on the drawings or as necessary. Excavation shall be unclassified regardless of material encountered. This shall include necessary clearing and grubbing of any foreign substance encountered within the structure or trench area. 2. Boulders, logs, or any unforeseen obstacles encountered in excavating shall be removed and no additional compensation will be allowed because of difficulties met in driving through or removing such obstructions. 3. No separate payment for excavation as such will be made. The cost thereof shall be included in the prices for the pipe installation. Excavation material suitable for backfill shall be piled in an orderly manner at a sufficient distance from the trench to avoid overloading and to prevent slides or cave-ins. D. Rock Excavation: 1. All rock and other hard foundation material shall be freed of all loose material, cleaned, and cut to a firm surface; either level, stepped vertically and horizontally, or serrated, as may be directed by the ENGINEER. All seams shall be cleaned out and filled with concrete or mortar. City of Sunny Isles Beach NE 174th Street Roadway Improvements 02630 - 11 Storm Drainage 14-1758 / 09-19-2014