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Narrative: <br /> These calculations are for the PGB Gantry Foundation project in Boeing's 40-58 Building <br /> in Everett, WA. Calculations are based on the2015 IBC,ASCE 7-10, ACI 318, and AISC <br /> 14th Edition. The Scope of these calculations focuses on the gantry foundation design, <br /> trench cover plate, gantry column anchorage reinforcement and existing vault roof check. <br /> The proposed gantry system is a bridge style floor mounted gantry system. It is <br /> anticipated that the gantry will have multiple bridges spanning between two rails. Rails <br /> are spaced roughly 115' apart from each other, each rail is supported on (22) columns. <br /> Typical column spacing is 21'-9"with a reduced spacing of 6'-6" occurring at two <br /> locations along each rail. The gantry structure is being designed by Coffman Engineers. <br /> Coffman has provided Harris Group with design loads as the basis of the foundation <br /> design. The foundation design includes an overturning check, soil bearing pressure <br /> check, foundation reinforcement design, and anchorage reinforcement design. <br /> The south PGB gantry foundation will have a 4'-0" wide concrete utility trench. <br /> Calculations have been provided for the steel plate coving this trench. These plates have <br /> been designed for HS-20 loading. Utilities will feed into this trench from an adjacent <br /> tunnel. This tunnel will need to be penetrated at key locations. The tunnel was previously <br /> designed by BRPH. The BRPH drawings outline an allowable penetration size and <br /> spacing along the tunnel wall. The contractor will follow these allowances. <br /> The south eastern portion of the south foundation will span over an existing cast in place <br /> concrete utility vault. Harris Group has identified that the vault lid may become over <br /> stressed with the design weight of the gantry and the foundation. Harris Group has <br /> designed a mid-span column support for this vault lid. <br /> Table of Contents: <br /> 1 Narrative and TOC <br /> F1 - F16 Foundation Design <br /> VL1 -VL9 Vault Lid Column <br /> AR1 - AR26 Anchor Reinforcement <br /> PL1 - PL14 Pour Length <br /> TP1 -TP14 Trench Plate <br /> TITLE: Narrative and TOC BY: AMW PROJECT No.: <br /> DATE: 2/12/20 12630.09 <br /> Boeing 40-58 CHECKED BY: PAGE: <br /> Harris Group PROJECT BY: 1 <br /> PGB Gantry Foundation <br /> DATE: <br /> ram EXCEL CALC-New Logo.xlsx i <br /> 2i ' <br />