Description
The U.S. Army Corps of Engineers, Japan District (POJ) is performing market research for a Design-Bid-Build (DBB) construction project to improve family housing at Yokota Air Base in Tokyo, Japan. The project involves the modernization, renovation, and repair of 32 family housing units, including 12 type 2GAN and 20 type 2GA units. The work includes providing all labor, materials, transportation, and performing all work necessary for the improvement of the family housing units to meet current codes and standards. The project requires the replacement of windows, doors, and insulation, as well as the upgrade of electrical, water, sewer, and communications systems. The project also includes the demolition of two supporting mechanical buildings and the removal of equipment from the neighborhood mechanical building.
Some key features of the project include:
• Replacement of windows with American Society for Testing and Materials (ASTM) F2090 window fall protection and doors with energy-efficient products
• Provision of insulation in perimeter walls and roofs and noise attenuation on interior walls and ceilings
• Upgrade of interior and exterior electrical, water, sewer, and communications systems
• Installation of hard-wired smoke alarms and fire sprinklers to meet Unified Facilities Criteria 3-600-01 Fire Protection and International Residential Code
• Conversion of mechanical systems from district heat/cool to unit-level HVAC and hot water heaters
• Demolition of the two supporting mechanical buildings and all utility lines
• Inspection and repair of exterior and interior wall/ceiling cracks
• Removal and disposal of equipment from the neighborhood mechanical building
• Repainting of exterior walls and trash enclosures
• Investigation of radon system during design to ensure functionality and compliance with current code/regulations
The project is expected to last 730 calendar days, and the estimated project magnitude is between ¥2,500,000,000 and ¥10,000,000,000.