This bidding is Phase III Logistics Warehouse Construction Bid Section, with two logistics warehouses and four elevated loading and unloading platforms in the logistics center. The plane size of Logistics Center II is 192.80 m × 99.80 m, and that of Logistics Center IV is 172.80 m × 99.80 m. They are two storey buildings (four floors in part of the management room). The first floor of the main body is of prestressed concrete structure, the second floor is of steel concrete frame structure, and the roof is of light steel roof with a floor height of 8.10m. The beam of the first floor adopts the bonded prestressed system of post tensioning method, and the unbonded prestressed system of the slab post tensioning method. The frame columns of the first floor are set with steel columns at intervals to connect with the roof light steel, and the foundation adopts prestressed pipe piles. The building floor is used. The warehouse area is wear-resistant floor, other auxiliary areas are anti-skid floor tiles, and the office area is PVC floor or composite wood floor. The exterior wall of the building adopts color steel profiled plate and local color steel sandwich plate, and the interior wall is a sand aerated concrete wall panel firewall. The roof is made of aluminized zinc formed color plate, with 10% daylighting belt. Color aluminum alloy doors and windows are used. The loading and unloading elevated platform adopts a span of 10.2+22.0+10.0 meters, with 3.0 meters overhanging at both ends, and a column grid with a maximum column spacing of 13.5 meters. The elevation of the platform plate is 7.70 meters, and the floor height is 9.00 meters. The platform structure is cast-in-place prestressed concrete frame, and the main beam and secondary beam are prestressed concrete beams. This bidding installation project mainly includes water supply and drainage system, ventilation and air conditioning system, electrical system (including strong and weak current system, lighting system, power supply and distribution system), etc. The water supply and drainage system is divided into water supply system, indoor fire protection system, pure water system, sewage system and rainwater system. Power system design includes power distribution system, lighting distribution system and grounding system. In addition, it also includes fire alarm system, lightning protection grounding system, telecommunications system, etc. The construction organization design was prepared in 2007