Atch(2)_Spec_Changes.pdf

Phase 2 Monzen Domestic Hot and Cold Water Repair Maximo No. 3432696

SECTION 01 14 00 Page 3 on the justification provided, the Contracting Officer may approve work outside regular hours. During periods of darkness, the different parts of the work shall be lighted in a manner approved by the Contracting Officer.

1.3.4 Occupied and Existing Buildings

a. Relocate movable exterior objects as required to perform the work, protect and replace the objects in their original locations upon completion of the work.

b. The Government will remove and relocate other Government property in the areas of the buildings scheduled to receive work.

c. Detail of Housing Interruption Notifications: Make, distribute and stick the notification letters for each required actions (see below as samples) for all units including vacant houses on the front door. Housing Office will assist in contacting the resident if the contractor is unable to reach the residents. Regarding the scheduling and daily interaction with residents for the purpose of the contract completion, this is the contractor’s responsibility.

(1) Potable hot and cold water outage schedule.

(2) Date/time schedule for the contractor’s work.

(3) Map and route for alternate parking area when parking outage is required.

(4) Others as needed.

The contractor must make a draft notification letter for Housing Officer’s review. Once the notification is finalized, it is the contractor’s responsibility to distribute to each housing unit.

The scheduled date/time for each unit where the resident will be impacted must be properly indicated in the notification.

The POC information for the contractor must be indicated in the notification for complaint resolutions. If the scope of complaint is above the contractor’s capability, the POC refers the resident to Housing Office. The contractor must also inform to the Contracting Officer Representative.

d. Main entrance of the housing unit will be blocked to keep the resident safety during construction. The resident will use sliding glass window at rear side of house for temporary entrance of the housing unit. Contractor shall provide and install a lock (operate from outside) to one rear sliding window at each housing unit. The lock is sturdy, made by stainless and installed to sash.

The Contractor shall provide temporary rear access way for secure resident safety and convenience including non-slip rubber mat on walking path and temporary lighting fixture for passage in night. Additionally the Contractor shall provide temporary access way to second floored housing unit for six houses (Building 960,961,976,977,984 and 985) including 12 units, because those housing units do not have entrance/exit on the ground floor. Submit “Pedestrian traffic control plan including lock catalog data”.

e. Make traffic control plan for existing road and parking for safety at the housing area. Provide temporary parking space when existing parking is outage.

Access pass for emergency vehicle shall be maintained at all time. See drawing “M-01” for reference to temporary parking and trash pad. Submit “Vehicle traffic control plan”.

N40084-18-B-5500, Amendment 0001, Attachment (2)

SECTION 33 61 14 Page 3

Phase 2 Monzen Domestic Hot and Cold Water Repair Maximo No. 3432696

80 mm 125 mm 1.5 mm 100 mm 150 mm 2.0 mm

a. Plastic PVC pipe conduit: JIS K 6741.

b. Steel pipe conduit: JIS G 3444. Steel pipe conduit shall be used under parking lots and roads. Outer surface of steel pipe shall be coated with asphalt protective coating(t=4.5mm)in accordance with JIS G 3491 after blasting.

2.1.3 Factory-Applied End Seals

Provide watertight end seal, or factory lay-up type end seal between carrier pipe and conduit if required in accordance with manufacture’s installation manual. Provide sufficient surface bonding area between carrier pipe and conduit to ensure permanent watertight end seal suitable for use with temperature limits of carrier pipe.

2.1.4 Factory-Prefabricated Carrier Piping

Pipe, fittings, flanges, and couplings shall be marked with manufacture’s name, product identification, and publication to which items conform. Carrier piping shall be as specified in this section.

2.2 CARRIER PIPING

2.2.1 Copper Tubing

Provide coper tubing for hot domestic water piping.

a. Copper tubing: Copper pipe shall conform to JIS H 3300 as indicated.

b. Pipe connection: Pipe connections are in accordance with manufacture’s installation manual.

2.3 BURIED WARNING AND IDENTIFICATION TAPE

Provide detectable aluminum foil plastic backed tape or detectable magnetic plastic tape manufactured specifically for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument. Provide tape in rolls, 75mm minimum width, color coded for the utility involved with warning and identification imprinted in bold black letters continuously and repeatedly over entire tape length. Warning and identification shall read “CAUTION BURIED PREINSULATED WATER PIPING BELOW” or similar wording. Use permanent code and letter coloring unaffected by moisture and other substances contained trench backfill material.

2.4 CONCRETE THRUST BLOCKS

Provide concrete thrust blocks as specified in Section 03 30 00 CAST-IN PLACE

CONCRETE.

2.6 PIPE SLEEVES

Provide where piping passes entirely through walls and floors. Provide sleeves of sufficient length to pass through entire thickness of walls and floors. Provide 25mm minimum clearance between exterior of piping or pipe insulation, and interior of sleeve or core-drilled hole. Firmly pack space with mineral wool insulation. Seal space at both ends of sleeve or core-