P812 Draft Concept Summaries.pdf

P810 & P812 Marine Corps Barracks Complex Kadena Air Base, Okinawa, Japan

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1.0 DISCIPLINE SUMMARIES

1.1 Civil

1.1.1 Site preparation

The site preparation includes clearing and grubbing activities and demolition of pavement, curb and gutter, and utilities. The building pads and paved areas have 300 mm (12 inch) of scarify and compact soil improvement. The estimate includes all loading, hauling, and disposal costs. In addition, the P810 estimate includes 11,643 m3 of imported soil to build up the north end of the E1-E5 building to achieve proposed finished floor elevation as well as provide necessary fill from pavement removal.

1.1.2 Site Improvements

The concrete site improvements are comprised of parking lots, equipment pads, curb & gutter, and sidewalks. Asphalt pavement and traffic markings have been included in the estimate as detailed.

Landscaping elements include but are not limited to sod, trees and temporary staking, and cobble stone mulch. Also, relocation of one (1) Bayan Tree as well as thirty-five (35) tree replacements have been included in each estimate. Temporary irrigation is provided for plant establishment only with no provisions for a permanent system. The P812 estimate captures the site recreation package which includes an enlarged concrete framed picnic shelter with two (2) barbeque pits and sport court with two (2) basketball hoops. Each estimate includes the following site amenities: one (1) bike rack accommodating 16 bikes, one (1) smoking shed, one (1) trash/recycle enclosure, retaining walls, benches, chain link fencing with screening slats, and pedestrian/gear canopy with decorative clay tile roof.

1.1.3 Site Utilities

Site utilities include a water distribution system for both domestic and fire service, sanitary sewer system, storm water system, energy distribution system, and radon elimination system. All excavation, backfill, and hauling of spoils are included for each activity as required. A swell/shrink factor of has been included for excavated/imported soils. Natural gas piping is excluded from both estimates. The P810 estimate includes a separate “drainage mitigation measures” system which consists of an underground retention/storage vault.

1.2 Architectural

1.2.1 Exterior

The exterior skin is comprised of cast-in-place concrete which receives a cement plaster coating with a textured wall paint system,aluminum framed sliding windows (which meet the ATFP requirements of UFC 04-010-10), and automatic sliding type stainless-steel storefront entry doors equipped with RFID access hardware. The stair towers are cast-in-place concrete receiving a cement plaster coating along with a textured wall paint system and includes aluminum handrails and guardrails. The exterior doors, at the stairwells that provide access to the corridors, are based on hollow metal construction with half glass panels. Other exterior service doors are based on hollow metal flush panel construction. All doors are equipped with hardware as appropriate. Additional architectural features on the outside include mechanical louvers, awnings at door entrance locations, and exterior building signage.

1.2.2 Roofing

The roof is a multi-layered fluid applied waterproofing system which is adhered to the concrete roof deck.

The roofing system begins by cleaning to remove all debris in preparation for the surface conditioner and water borne epoxy prime coat. After the prime coat, the polymer modified cement waterproofing base

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Page || 2 coat is applied. Finally, the resin-based topcoat is applied. This system includes a 20-year warranty. The quantities contain an additional 10% to account for lap and vertical surfaces (e.g., parapet, access hatch, miscellaneous penetrations). The concrete parapet/soffit receives a spray textured coating. Roofing supplementary components are comprised of roof drains, downspouts (which tie into the site storm water system), access hatch, and crickets.

1.2.3 Interior

The interior cost elements include but are not limited to partitions, doors and hardware, finishes, and specialties. The basis for elements within this section are the Concept Final submittal design floor plans dated March 2022.

1.2.4 Partitions

All interior partitions are assumed to be reinforced concrete construction, reinforced cmu, or light gauge metal framing with gypsum wall board, insulation, and a painted finish (except ceramic wall tile at restrooms/bathrooms). Interior furring consisting of light gauge metal framing and faced with gypsum wall board and a painted surface where indicated. On the exterior of the facility, the interior side is also furred with light gauge framing, insulated, and painted gypsum.

1.2.5 Doors and Hardware

Room entry and office doors receive steel knock down frames with hollow metal flush panel doors with radio-frequency identification (RFID) card access with key over-ride hardware set. Bedroom doors are assumed to be hollow metal panel doors with lockable passage sets. Other interior room doors are assumed to be solid core wood flush panel doors at bathrooms and closets with passage hardware sets.

Interior storage and stairwell doors are hollow metal welded frames with hollow metal flush panel doors.

Provisions have been made for galvanized steel access doors with frame and hardware included for each apartment space.

1.2.6 Ceilings

All the ceilings were estimated as 12.5mm gypsum fire rated or 12.5mm moisture resistant gwb with seismic bracing components for stabilization. The acoustical ceiling tile system with seismic bracing components for stabilization are in the multi-purpose rooms and corridors. DOAU rooms receive insulation at ceilings, and exposed ceilings are painted (i.e., storage areas, telecommunication rooms, and janitor’s closets).

1.2.7 Flooring

Apartment bedrooms, corridors, and offices received vinyl composite tile. All wet areas receive ceramic tile. All utility rooms are sealed concrete, interior stairs are sealed concrete, and telecommunication rooms receive vinyl tile composite flooring.

1.2.8 Specialties

The specialties included consist of casework, fire safety equipment, toilet partitions, toilet accessories, and interior signage. All closets received 305-mm-deep aluminum wire shelving. Pr el im in ar y

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1.2.9 Conveying Systems

The estimate for both barrack buildings includes two (2), 15-passenger electric traction elevators and one

(1) oversized electric traction elevator to accommodate emergency functions (i.e., medical stretcher). All elevators are based on a capacity of 1150 kg/each. The conveying system accommodates an elevator equipment room to be located on the roof.

1.3 Structural

1.3.1 Substructure

Foundations: The building’s foundation system is comprised of reinforced concrete grade beams and pre-stressed high-strength concrete (HPC) or steel wing piles atop pile caps. The bar reinforced 150 mm slab on grade is placed with 24 MPa strength ready mix concrete. Concrete volumes and formwork include 5% and 10% waste factors, respectively. Allowances were made for reinforcing steel in the range of 10% to 20% by weight depending on conditions and estimator judgement to account for waste, laps and accessories. The structural slab on grade includes formwork, gravel base course, and other components as specified on the drawings.

Utilities Pit: A perimeter structural wall and lowered slab below toilets and corridors are installed.

1.3.2 Superstructure

Floor Construction: The floor structures are based on columns and beams which support bar reinforced cast-in-place 150 mm (6 inches) thick elevated concrete slab (P812 floors 2-6 will have a thickness of 150mm).

Roof Construction: The roof structures are based on columns and beams which support bar reinforced cast-in-place 150 mm (6 inches) thick elevated concrete slab. The perimeter incorporates an integral turnup parapet wall.

Vertical Enclosures: The external and internal enclosures are based on bar reinforced cast- in-place concrete walls.

Stairs: Other structural items included in the estimate are cast in place concrete stairs.

Ancillary Structures: The exterior ancillary structures such as bus shelters and breezeways are incorporated under site work.

1.4 Fire Protection

The fire sprinkler scope of work is based on a wet system that meets NFPA 13R design criteria. The system is supported by a 1,893 lpm (500 gpm) fire pump for each building. The fire sprinkler system is furnished with a backflow prevention assembly. A fire standpipe riser is provided for each floor. The sprinkler grid system is a wet pipe distribution system with schedule 40 steel pipe.

1.5 Plumbing

The plumbing systems include fixtures, domestic water / drainage / vent piping, and equipment (i.e., booster pumps, hot water boiler & storage tank, etc.). A 26.5 m3 (7,000-gallon) fuel oil storage tank will support the 413kW (554 hp) hot water boilers. The system will also include a 2,500 L (660-gallon) and 6,000 L (1,585 gallon) hot water generator tank. The rooms are furnished with a water closet, bathtub/shower, lavatory, and kitchen sink. The elevator lobby on every floor will have a drinking fountain.

Each floor contains a janitor’s closet with a mop sink. On the first floor, the men’s bathroom contains a urinal. . The domestic hot water system has a 570 lpm (150 gpm) primary circulating pump with 2

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Page || 4 secondary in-line 68 lpm (18 gpm) pumps. The domestic water distribution piping, and sanitary waste and vent system were included on a cost per square meter until plans are more developed

1.6 Heating, Ventilation, and Air Conditioning (HVAC)

The two barracks are assumed to have similar comfort cooling requirements. Each facility consists of two

(2) air-cooled chillers with 268 KW (81.5 tons) of cooling capacity each. The chilled water system has dual 1,540 LPM (407 GPM) chilled water pumps. Both barracks contain six (6) floors with an air handling unit (AHU) and a DOAU per floor. VAV boxes with thermostat control sensors are used to service the individual apartments with a total of 216 terminal units. The HVAC system within the estimate includes a BACNET control system and test & balance of the mechanical system to ensure proper operation.

Commissioning is included at 5% of the HVAC extended direct cost.

1.6.1 Site Electrical

Electric service from existing network 13.8KV pad mounted, 13.8KV Switches via 13.8 KV cable junction pedestal (4 Way), duct banks and manholes to new 2000 KVA, 13.8KV to 208Y/120 pad mounted transformers serving each building.

Site Lighting – Canopy, basketball court, and picnic recreation area lighting is included per the original estimate but not shown on the electrical drawings., parking lot lighting, Exterior lighting circuited through a contactor with photocontrol.

Dry Utilities – Site copper and fiber optic service conductors are brought through duct banks and manholes from building now detailed. P810 has almost all the dry electric and communication utility duct banks and manholes. P812 services are extended from manholes installed under P810 and service cables and provided to the source through the P810 underground raceway system. Cable TV is assumed to be brought to the site by the provider.

1.6.2 SNCO / Officer Barrack

The new 2,000 KVA, 13.8KV to 208Y/120 Volt, pad mount transformer serves to energize an outdoor 3000 Amp, 277/480V, 3phase, 4W, 60HZ stainless steel switchgear. The outdoor gear serves the new air-cooled chiller and fire pump, site lighting, fire alarm panel, and new 2500 AMP indoor distribution switchboard. The distribution switchboard feeds new 500 KVA dry type transformers on each floor which serve 1200A Distribution boards at 120/208 Volt. Interior panels on each floor served from the distribution panel on each floor of both buildings. Emergency power is taken from the indoor switchboard directly from the bus. Pricing on the switchgear was not available from local distributors and the basis of our pricing is a combination of other costs books and other project quotations.

Motor and equipment are not shown on the electrical drawings. Circuiting of mechanical equipment is shown in App H8 - P810 Electrical Calculations & Cut Sheets. Variable frequency drives are part of the AHU packaged equipment. Elevators have elevator power modules. Air cooled chillers are packaged units as well as the fire pump. Manual and combination starters are furnished where indicated in App H8 - P810 Electrical Calculations & Cut Sheets.

Barracks Rooms lighting, lighting controls, and receptacle layout designs are complete and reflected in the estimate as such. Light fixtures are current internet pricing on the models specified. Where shown on the plans, 90-minute battery back-up units were provided. Ceiling fans are indicated to be furnished in the estimate. Lighting controls were not provided with a wiring diagram so the selection we made to match the drawing quantities were Acuity N-Light series. No reference to arc fault protection in bedroom circuits.

Ground fault receptacles quantity could be reduced by circuiting. RF Receptacles are furnished where shown.

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Telephone outlets shown on the plans are assumed to be one port. Work Area Outlets are two ports.

WAP furnished wireless devices. Racks, copper and fiber patch panels, Racks, cable trays, plywood, ground bus bars, protective entrance enclosures with gas modules, wire managers, UPS, grounding, riser wiring, cable trays are furnished with communications. Category 6 cabling is included for all outlet ports.

Cable Television is taken from the provider and distributed via cabinets on each floor to TV outlets. Cable television wiring to the outlets is included with 59 Ohm coaxial and single splitters and amplifiers. No allowance has been made for communication server’s routers and electronics or programming. The estimate provides for voice/data communications, community antenna television, and a wireless connectivity infrastructure.

Lightning protection and grounding grid and well as service and communications grounding are included.

Electronic Safety and Security Systems contain the Fire Alarm, Video Surveillance, Perimeter Access Control, Utility Monitoring and Control Systems. The addressable fire alarm and mass notification are as shown on the drawings integrally connected. Addressable modules to monitor the fire suppression, release doors, recall elevator, shunt trip elevator, send DCC a fire signal. Text signs and local consoles, visual, audible voice appliances are as shown. A single duct detector, not shown, have been included for each floor AHU.

Electronic surveillance with dome fixed interior and exterior POE CCTV cameras in locations shown on the drawings. Cameras shall be power over ethernet requiring only a single cat 6 feed back to the data rack head end containing network ethernet switches. CCTV head end to have a network recorder, software, workstation, and monitor. Utility Monitoring and Control Systems is accomplished by utility instruments installed in the service switchboard with a single recording smart meter

Access Controls and door hardware are split between architectural and electrical. There documents are missing a system description, specification, wiring diagram sequence or manufacture. Readers are under hood hardware the head end and some additional wiring under electronic security.

ASSUMPTIONS, EXCLUSIONS, AND CLARIFICATIONS

The estimate contains assumptions, exclusions and clarifications which helped in forming the costs and are described below.

Waste factors are included for materials as described in the project item notes field.

Furniture, Fixtures and Equipment (FF&E) are excluded from the estimate.

Building plan review and permit fees are excluded.

Consumption Tax was excluded from the estimate.

The two projects, P810 and P812, are to be costed as separate, independent projects with separate award dates and separate contractors.

The construction scheduled is based on a P810 start date of September 2023, construction midpoint September 2024 and for P812 a start date of September 2024, construction midpoint September 2025.

Construction work schedule is assumed to be 8 hours/day x 6 days/week.

A currency exchange rate of 106.4351 JPY to US Dollar was used when adjusting quotations.

Assume most work (80%+) will be performed by subcontractors.

Estimates exclude provisions for COVID related impacts.

Estimates exclude provisions for supply chain disruptions or impacts.

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