21B5500_A0001_Atch(2)_PC001.pdf

CUI//FEDCON

DEPARTMENT OF THE NAVY

OFFICER IN CHARGE OF CONSTRUCTION

NAVAL FACILITIES ENGINEERING COMMAND

CONTRACTS, IWAKUNI

DATE: 05/24/2021

Proposed Change No.PC001

ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT

FOR VARIOUS PROJECTS

at the

U. S. Marine Corps Air Station, Iwakuni, Japan

GENERAL INTENT:

The following changes and revisions must be made to the NAVFAC specifications and drawings listed herein.

Revised NAVFAC specifications and drawings will be issued with this change.

1. Changes must be made to pages of the specifications as follows:

1.1 TITLE: “ROOFING SUPPLEMENTARY EXPLANATION OF WORK”

Page: from 42 to 51 ITEM NO.: Change ITEM NO. “A001 to A094”, to read as “001 to

094”.

1.2 TITLE: “PAINTING SUPPLEMENTARY EXPLANATION OF WORK”

Page: 52

ITEM NO.: 097～125

Change and delete reference details “A-03,A-05,& A-06” and photos “AT-01,AT-02 & AT-05” to read as “A-38”.

Page: 53

ITEM NO.: 127

Change and delete reference details “A-09 & A-10” to read as

“A-40 & A-41”.

Page: 53

ITEM NO.: 128

Change and delete reference detail “A-11” to read as “A-42”.

Page: 53

ITEM NO.: 129

Change and delete reference detail “A-07 and attachment photo

AT-08” to read as “A-39”.

Page: 53

ITEM NO.: 134

Change and delete reference detail “A-15” to read as “A-46”.

Page: 53

ITEM NO.: 135～137

Change and delete reference detail “A-15” to read as “A-46”.

Page: 53

ITEM NO.: 138

Change and delete reference detail “A-16” to read as “A-47”.

Page: 54

ITEM NO.: 139

Delete reference detail “A-05”.

Page: 54

ITEM NO.: 140

Change and delete reference details “A-12 & A-13” to read as

“A-43 & A-44”.

Page: 54

ITEM NO.: 141

Change and delete reference detail “A-14” to read as “A-45”.

Page: 54

ITEM NO.: 143

Delete reference photo “AT-04”.

Page: 54

ITEM NO.: 145

Delete reference photo “AT-03”.

2. Changes must be made to the prints of the drawings as follows:

2.1 Delete the following drawings:

NAVFAC DWG NO. REV LTR SHEET NO. TITLE

17071356 1 A-01 COVER SHEET

17071357 1 A-03 B#600 – 1ST FLOOR PLAN

17071358 1 A-04 B#600 – 2ND FLOOR PLAN

17071359 1 A-05 B#600 – ELEVATION-1

17071360 1 A-06 B#600 – ELEVATION-2

2.2 The following revised drawings supersedes previously

issued drawings bearing the same sheet number and title:

NAVFAC DWG NO. REV LTR SHEET NO.

17071370 1 T-1 Revised project title.

17071361 1 A-38 Revised drawing sheet number.

17071362 1 A-39 Revised drawing sheet number.

17071363 1 A-40 Revised drawing sheet number.

17071364 1 A-41 Revised drawing sheet number.

17071365 1 A-42 Revised drawing sheet number.

17071366 1 A-43 Revised drawing sheet number.

17071367 1 A-44 Revised drawing sheet number.

17071368 1 A-45 Revised drawing sheet number.

17071369 1 A-46 Revised drawing sheet number.

17071412 1 A-47 Revised drawing sheet number and added “REFERENCE ONLY” on ILLUMINATED SIGN DETAIL.

-- End of Proposed Change No.PC001 --

ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 42

CUI/FEDCON

Roofing and Exterior Painting IDIQ Contract for Various Projects MCAS Iwakuni, Japan

ROOFING SUPPLEMENTARY EXPLANATION OF WORK

The following description meets the description of the item number shown on each “EXHIBIT”, and states the supplementary explanation of the each item shown on

“EXHIBIT”.

ITEM

NO. SUPPLEMENTARY EXPLANATION

ROOF:

001 Remove existing mineral surfaces built-up roofing, various sheet waterproof and urethane waterproof coating that removal is down to the existing deck and cinder concrete (100% of vertical area, 5% of horizontal area). blister repairing (5% of horizontal area) and leveling adjustment shall be included. Appeared deck and cinder surface shall be cleaned. The construction quantity shall be total of horizontal area and vertical area.

002 Remove all existing roofing insulation that removal is down to the existing deck and cinder concrete. Appeared deck and cinder surfaces must be cleaned.

003 Remove all existing asbestos contained mineral surfaced built-up roofing, various sheet waterproof and urethane waterproof coating that removal is down to the existing deck and cinder concrete. Appeared deck and cinder surfaces must be cleaned.

004 Clean up existing built-up roofing surfaces by water blasting. Surfaces must be dry and clean prior application of new roofing materials.

005 Clean up existing gutter surfaces by water blasting.

006 Cut and remove existing local deteriorated asphalt roofing system and repair them. As shown in the attached sketch A-5 (similar detail).

007 Repair blister of existing asphalt roofing system. As shown in the attached sketch A-5.

008 Repair concrete covering at existing slab or deck. As shown in the attached sketches A-11 and A-12.

009 Provide new polymer modified bitumen roofing system (Cold applied) with new heat resistant rigid urethane insulation board (up to 60mm) on existing mineral surfaced built-up roofing (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketches A-2, A-7, A-8, A-10, A-13,A-15, A-18 and A-19.

010 Provide new polymer modified bitumen roofing system (Cold applied) with new heat resistant rigid urethane insulation board (up to 60mm) on existing mineral surfaced built-up roofing (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon

ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 43

replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketches A-2, A-7, A-8, A-10, A-13, A-15 A-18 and A-19.

011 Provide new polymer modified bitumen roofing system (Cold applied) with new urethane membrane waterproof coating (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in attached sketches A-2, A-7, A-8, A-10, A-13, A- 15, A-18 and A-19 .

012 Provide new polymer modified bitumen roofing system (Cold applied) with new urethane membrane waterproof coating (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in attached sketches A-2, A-7, A-8, A-10, A-13, A- 15, A-18 and A-19.

013 Provide new polymer modified bitumen roofing system (Cold applied) with new concrete slab or concrete covering (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketch A-2, A-18 and A-19.

014 Provide new polymer modified bitumen roofing system (Cold applied) with new concrete slab or concrete covering (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “dannestu bari” method. This material shall for external insulation waterproofing system and treat as member of the roofing waterproof system. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketch A-2, A-18 and A-19.

015 Provide new polymer modified bitumen roofing system on existing mineral surfaced built-up roofing (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area

As shown in the attached sketches A-1, A-6, A-9, A-14, A-18 and A-19.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 44

016 Provide new polymer modified bitumen roofing system on existing mineral surfaced built-up roofing (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area As shown in the attached sketches A-1, A-6, A-9, A-14, A-18 and A-19.

017 Provide new polymer modified bitumen roofing system on existing urethane membrane waterproof coating (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area A-1, A-6, A-9, A-14, A-18 and A- 19.

018 Provide new polymer modified bitumen roofing system existing urethane membrane waterproof coating (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area A-1, A-6, A-9, and A-14.

019 Provide new polymer modified bitumen roofing system on concrete slab or concrete deck cover (horizontal area) up to 300 SM. Replace existing air vents (1ea/75sm).Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) must be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketch A-1, A-18 and A-19.

020 Provide new polymer modified bitumen roofing system on concrete slab or concrete deck cover (horizontal area) over 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x horizontal area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. Provide heat reflected top coating. The construction quantity shall be total of horizontal area. As shown in the attached sketch A-1, A-18 and A-19.

021 Provide new polymer modified bitumen roofing system on existing riser surface.

Use “michaku bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of vertical area. As shown in the attached sketches A-1, A-2, A-6 through A-15.

022 Provide new urethane membrane waterproof coating system on existing mineral surfaced built-up roofing (horizontal and vertical area) up to 300 SM.

Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon takashi.suyama.ja Polygon

ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 45

all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area and vertical area. As shown in the attached sketches A-3, A-6, A-9, A-14, A-18 and A-19.

023 Provide new urethane membrane waterproof coating system on existing mineral surfaced built-up roofing (horizontal and vertical area) over 300 SM.

Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. The construction quantity shall be total of horizontal area and vertical area. As shown in the attached sketches A-3, A-6, A-9, A-14 A-18 and A-19.

024 Provide new urethane membrane waterproof coating system on existing urethane membrane waterproof coating (horizontal and vertical area) up to 300 SM.

Use “michaku bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area and vertical area. As shown in the attached sketches A-4, A-6, A-9 and A-14.

025 Provide new urethane membrane waterproof coating system on existing urethane membrane waterproof coating (horizontal and vertical area) over 300 SM. Use “michaku bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of horizontal area and vertical area. As shown in the attached sketches A-4, A-6, A-9 and A-14.

026 Provide new urethane membrane waterproof coating system on existing concrete slab or concrete cover (horizontal and vertical area) up to 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity attached sketches A-3, A-6, A-11, A-12, A-18 and A-19.

027 Provide new urethane membrane waterproof coating system on existing concrete slab or concrete cover (horizontal and vertical area) over 300 SM. Replace existing air vents (1ea/75sm). Use “zetsuen bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity attached sketches A-3, A-6, A-11, A-12, A-18 and A-19.

028 Provide new polymer modified bitumen roofing system on existing riser surface.

Use “michaku bari” method. Surface cleaning, all ditch & horizontal surface repairing (by leveling mortar) and all expansion joint filler replacing (10~20mm x vertical area) shall be included. Provide heat reflected top coating. The construction quantity shall be total of vertical area. As shown in the attached sketches A-4, A-6, A-9, A-11, A-12 and A-14.

029 Provide new urethane membrane waterproof coating system on existing and new concrete structure and foundation surface. Use “michaku bari” method. Surface cleaning, damaged surface repairing. Provide heat reflected top coating. The construction quantity shall be total of horizontal area and vertical area.

As shown in the attached sketches A-4, A-27, and A-28.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 46

030 Provide new mineral surfaced built-up roofing for maintenance. Provide heat reflected top coating. The construction quantity shall be total of horizontal area and vertical area.

031 Remove existing asphalt shingle roofing, asphalt felt and flashing; and provide new asphalt roofing felt, asphalt shingle roofing and flashing.

As shown in the attached sketch A-29.

032 Remove existing asbestos contained asphalt shingle roofing, asphalt roofing felt and provide new asphalt shingle roofing, and asphalt roofing felt. As shown in the attached sketch A-29.

033 Apply heat resistant coating on existing mineral surfaced built-up roofing or urethane membrane waterproof coating surface (horizontal and vertical area) up to 300 SM. As shown in the attached sketches

A-1, A-2, A-3 and A-4.

034 Apply heat resistant coating on existing mineral surfaced built-up roofing or urethane membrane waterproof coating surface (horizontal and vertical area) over 300 SM. As shown in the attached sketches A-1, A-2, A-3 and A-4.

035 Provide new polymer modified bitumen roofing system on steel surface of vent pipe.

As shown in the attached sketches A-23 and A-24.

036 Remove existing roof tile and asphalt roofing felt and provide new structural plywood, asphalt roofing felt and roof tile on existing sheathing roof board.

As shown in the attached sketch A-30.

037 Remove existing fascia and gable wood board and provide new wood fascia & gable board. As shown in the attached sketch A-31.

038 Provide new 0.6 thick precoated galvanized metal sheet on the existing fascia and gable board. As shown in the attached sketch A-30.

039 Remove existing metal roof and provide new precoated galvanized metal roof.

040 Provide new precoated galvanized metal roof on existing metal roof.

041 Remove existing metal roof fascia & gable and provide new precoated galvanized metal fascia & gable.

042 Remove existing slate roofing system and provide new slate roofing system. As shown in the attached sketch A-31.

043 Remove existing sheet roofing and provide new synthetic polymer roofing system

044 Remove existing sheet roofing and provide new synthetic polymer roofing system with new heat resistant rigid insulation board(up to 50mm).

045 Remove existing expansion joint filler & sealant and provide new. As shown in the attached sketch A-20.

046 Provide new stainless steel air ventilator pipe. As shown in the attached sketches A-18 and A19.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 47

047 Remove existing cement mortar cover and/or various sheet waterproof for existing vent pipe and provide new polymer modified bitumen roofing system around existing vent pipe with stainless tie band. As shown in the attached sketch A-23.

COPING:

048 Remove existing aluminum coping and provide new 1.5 thickness aluminum extruded type coping. All new exposed aluminum should be factory pre-finished to match existing color schemes. As shown in the attached sketches A-6, A-7, A-10, and A-11.

049 Remove existing aluminum coping temporarily and reinstall existing aluminum coping.

Use new stainless steel fasteners. Sanding & remove existing concrete parapet edge (20% total length) to fit existing coping.

050 Remove existing aluminum expansion cover and provide new aluminum expansion cover. As shown in the attached sketches A-21 and A-22.

FLASHING:

051 Remove existing metal strap & sealant and provide new aluminum extruded type strap & sealant for existing parapet edge and vertical portion. All new exposed aluminum must be factory pre-finished to match existing color schemes. As shown in attached sketches A-15, A-25, A-26.

052 Remove existing flashing & sealant and provide new aluminum extruded type flashing & sealant for existing parapet edge and vertical portion. All new exposed aluminum must be factory pre-finished to match existing color schemes.

As shown in attached sketches A-12, A-13, A-14.

053 Remove existing metal flashing and provide new precoated galvanized flashing at roof edge and vertical portion. All new exposed precoated galvanized flashing must be factory pre-finished to match existing color schemes. As shown in attached sketches A-30 and A-31.

054 Remove existing metal flashing and provide new aluminum or stainless steel flashing at roof edge and vertical portion. As shown in the attached sketch A-29.

DRAIN:

055 Remove existing horizontal roof drain strainer with clamping base and provide new copper type roof drain (“kaishuyo-drain”) and aluminum die-cast strainer.

As shown in the attached sketch A-17.

056 Remove existing horizontal roof drain strainer with clamping base temporarily.

Clean/repaint existing roof drain, strainer and clamping base and reinstall them. As shown in the attached sketch A-17.

057 Remove existing vertical roof drain strainer with clamping base and provide new copper roof drain (“kaishuyo-drain”) and aluminum die-cast strainer. As shown in the attached sketch A-16.

058 Remove existing vertical roof drain strainer with clamping base temporarily. Clean/repaint existing roof drain, strainer and clamping base and reinstall them. As shown in the attached sketch A-16.

GUTTER and DOWNSPOUT:

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 48

059 Provide new urethane membrane waterproof coating system on existing cement mortar surface of roof gutter (up to w=200). Use “michaku bari” method. As shown in the attached sketch A-4.

060 Provide new urethane membrane waterproof coating system on existing cement mortar surface of roof gutter (w=200~400). Use “michaku bari” method. As

061 Provide new urethane membrane waterproof coating system on existing cement mortar surface of roof gutter (over w=400). Use “michaku bari” method. As

062 Remove existing stainless mesh strainer in the gutter and provide new stainless mesh strainer.

063 Remove existing rain gutter & gutter hanger and provide new PVC gutter & stainless gutter hanger. As shown in the attached sketch A-30.

STEEL SUPPORT and FUNDATION for MECHANICAL and ELECTRICAL EQUIPMENT and

PIPING:

064 Remove various shapes and sizes existing concrete foundations for mechanical and electrical equipment; and abandoned foundation.

065 Remove existing cement mortar surface for concrete foundation and provide new waterproof cement mortar for existing concrete foundation.

066 Provide new raised concrete foundation (300x300~400x400x200h ±) for pipe and/or tube support, electrical wiring conduit and/or equipment support.

As shown in attached sketch A-28.

067 Provide new raised concrete foundation (400x400~600x600x300h ±) for pipe and/or tube support, electrical wiring conduit and/or equipment support.

As shown in the attached sketch A-27.

068 Provide new raised concrete foundation (over 600x600x300h) for pipe and/or tube support, electrical wiring conduit and/or equipment support. As shown in the attached sketch A-27.

069 Remove existing mechanical equipment (various capacity A/C outside unit), concrete base and rubber sheet temporarily, and reinstall existing mechanical equipment (various capacity A/C outside unit) with new C-channel, , new concrete base, new anti-vibration rubber unit (including pump-down of refrigerant, modify existing refrigerant pipes, cleaning, purging and vacuum inside of refrigerant pipes & perform leak test by nitrogen for associated refrigerant pipe line and refill and replenish refrigerant into modified refrigerant pipe line). As shown in the attached sketch A-36.

070 Remove existing electrical conductors and support materials for lightning protection and provide new ones and connect to the existing line. The conductor must include wiring, bar or rod type and related expansion terminals. The conductor connection investigation must be included in this work item. As shown in the attached sketch A-37.

071 Cut and weld existing steel leg (up to 40x40 angle or up to 40x75 channel) of steel pipe support for mechanical pipe lines (including associated works).

Replace existing isolation rubber sheet with new. Remove and reinstall existing steel leg and remove and reinstall existing loose type concrete foundation. Repaint steel leg. As shown in the attached sketch A-32, A-34, and A-35.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 49

072 Cut and weld existing steel leg (up to 75x75 angle or up to 65x125 channel) of steel pipe support for mechanical pipe lines (including associated works).

Replace existing isolation rubber sheet with new. Remove and reinstall existing steel leg and remove and reinstall existing loose type concrete foundation. Repaint steel leg. As shown in the attached sketch A-32, A-34, and A-35.

073 Cut and weld existing steel leg (over 75x75 angle or over 65x125 channel) of steel pipe support for mechanical pipe lines (including associated works). Replace existing isolation rubber sheet with new. Remove and reinstall existing steel leg and remove and reinstall existing loose type concrete foundation. Repaint steel leg. As shown in the attached sketch A- 32, A-34, and A-35.

074 Cut and weld existing steel leg (up to 40x40 angle or up to 40x75 channel) works). Replace existing concrete base and isolation rubber sheet with new. Remove and reinstall existing steel leg. Repaint the steel leg. As shown in the attached sketches A-32, A-34, and A-35.

075 Cut and weld existing steel leg (up to 75x75 angle or up to 65x125 channel) works). Replace existing concrete base and isolation rubber sheet with new.

Remove and reinstall existing steel leg. Repaint the steel leg. As shown in the attached sketches A-32, A-34, and A-35.

076 Cut and weld existing steel leg (over 75x75 angle or over 65x125 channel) works). Replace existing concrete base and isolation rubber sheet with new.

Remove and reinstall existing steel leg. Repaint the steel leg. As shown in the attached sketches A-32, A-34, and A-35.

077 Remove existing steel leg with concrete base and provide new steel leg support with isolation rubber sheet. Paint steel leg support. As shown in the attached sketch A-33.

PAINTING:

078 Paint/Repaint exposed surfaces of new and existing steel supports, steel flashings, steel sheet covers for mechanical equipment, steel roof vents, cast iron roof drain caps, wood fascias, wood gable boards, and steel fence/enclosures.

079 Existing lead based paint surfaces preparation and repaint existing steel supports, steel flashings, steel sheet covers for mechanical equipment, steel roof vents, and cast iron roof drain caps.

TEMPORARY WORK:

080 Assemble and disassemble of double-pole scaffolding (“Tankan Hon Ashiba”) and/or prefabricated scaffolding (“Wakugumi Ashiba”), including covering around scaffolding to prevent primer/ sealer/ paint etc. from spreading.

Unit measurement shall be by the area of scaffolding.

ASBESTOS CONTAINING MATERIALS (ACM) SAMPLING:

081 Asbestos sampling of existing roofing material. Quantity of samples will be provided by task order. Asbestos sampling work must be done by certified "Building Inspector" by EPA. Testing laboratory must comply with Section

02 82 00 ASBESTOS REMEDIATION.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 50

082 Asbestos sampling of existing roofing material and request sampling analysis. Quantity of samples will be provided by task order. Conduct asbestos survey, and submit laboratory report (0.1% by weight) to the Government. Asbestos sampling work must be done by certified "Building Inspector" by EPA. Testing laboratory must comply with Section 02 82 00

ASBESTOS REMEDIATION.

LEAD BASE PAINT (LBP) SAMPLING:

083 Lead based paint sampling of existing steel surfaces of roof. Quantity of samples will be provided by task order. Lead based paint sampling work must be done by certified "Building Inspector" by EPA and in accordance with SECTION 02 83 13.00 20A Paint Chip Sampling For Lead Analysis.

084 Lead based paint sampling of existing steel surfaces of roof and request sampling analysis. Quantity of samples will be provided by task order.

Conduct lead based paint survey and submit laboratory report to the Government. Lead based paint sampling work must be done by certified "Building Inspector" by EPA. Testing laboratory must comply with Section 02 83 13.00 20 Lead in Construction.

ACM and LBP ABATEMENT:

085 Install and remove plastic/vinyl sheet covering enclosure for lead or asbestos control area. Unit measurement shall be by the areas of enclosure such as ceiling, wall and floor to be covered by plastic/vinyl sheet covering as enclosure.

086 Provide air, wipe and/or soil sampling test and analysis including before lead based paint (LBP) removal work sampling, during LBP removal work sampling(s) and after LBP removal work sampling(s) in accordance with SECTION 02 83 13.00 20 LEAD IN CONSTRUCTION. Unit measurement must be by the number of sampling performance.

087 Provide Phase Contrast Microscopy (PCM) area air and personal sampling test and analysis including prior to asbestos removal work sampling, during asbestos work sampling(s) and after final clean-up sampling(s) in accordance with SECTION 02 82 00 ASBESTOS REMEDIATION. Unit measurement must be by the number of sampling performance.

088 Provide Transmission Electron Microscopy (TEM) area air and personal sampling test and analysis including prior to asbestos removal work sampling, during asbestos removal work sampling and after final clean-up sampling in accordance with SECTION 02 82 00 ASBESTOS REMEDIATION. Unit measurement must be by the number of sampling performance.

089 Provide and remove change room consist of two layer of six- mil polyethylene sheet covering with framing and triple flaps of six-mil polyethylene sheets at doorways. Change room size must be at least 5’-0” x 5’-0” x 6’-6” height.

090 Disposal of ACM and LBP in accordance with SECTION 02 82 00 ASBESTOS

REMEDIATION and Section 02 83 13.00 20 Lead in Construction.

MISCELLANEOUS:

091 Replace existing acrylic skylight with new (600x600) to match existing.

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ROOFING SUPPLEMENTARY EXPLANATION OF WORK PAGE 51

092 Replace existing acrylic skylight with new (900x900) to match existing.

093 Replace existing acrylic skylight with new (1300x1300) to match existing.

094 This description covers all kind of items not shown on “EXHIBIT” and

“SUPPLEMENTARY EXPLANATION OF WORK”, and related with the description shown on “EXHIBIT” and “SUPPLEMENTARY EXPLANATION OF WORK”.

-- End of Section –-

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PAINTING SUPPLEMENTARY EXPLANATION OF WORK PAGE 52

Roofing and Exterior Painting IDIQ Contracts for Various Projects

PAINTING SUPPLEMENTARY EXPLANATION OF WORK

The following description meets the description of the item number shown on each “EXHIBIT”, and states the supplementary explanation of the each item shown on “EXHIBIT”.

ITEM

NO. SUPPLEMENTARY EXPLANATION

095 Remove dirt, dust, loose paint and chalking by brushing with fresh water. Remove grease, oil, mold and other deleterious substances. For large areas, water blasting may be used.

Surfaces shall be dry and clean prior to application of the coating. This line item includes installation and removal of temporary coverings for protection of areas not to be painted such as hardware, aluminum windows and equipment etc. Unit measurement shall be by the areas actually painted.

096 Prepare surfaces with “3-SHU KEREN”,SSPCW Type3 surface preparation method by both hand tool cleaning and power tool cleaning. Remove all loose rust, loose paint and other loose detrimental foreign matter.

The hand tool cleaning and power tool cleaning are not intended that adherent rust and paint must be removed by those processes. Rust and paint are considered adherent if they cannot be removed by lifting with a dull putty knife.

Remove dirt splinters, loose particles, grease, oil, disintegrated coatings, and other substances deleterious to coating performance as specified for each substrate. This line item includes installation and removal of temporary coverings for protection of areas not to be painted such as hardware, aluminum windows and equipment etc. Unit measurement shall be by the areas actually painted.

097~125 Apply sealer or primer, and paints on flat or textured surfaces. Each line item shall also include; (1) Remove unused nails, screws and tapes. (2) Retighten loose screws and nails. (3) Putty on hairline cracks less than 0.3 mm width, scratches, dents pin holes and screw/ nail heads. As shown in the attached sketch A-38.

(a) Line item 008 existing repainting aluminum panel and

017 repainting existing PVC gutter/ downspout surfaces include solvent cleaning.

(b) Preparation for Line item 023 repainting existing asbestos cement board will apply item 045.

126 Prepare existing surfaces, apply sealant and waterproof urethane type floor coating on concrete and cement mortar surfaces at balcony.

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PAINTING SUPPLEMENTARY EXPLANATION OF WORK PAGE 53

127 Remove existing cement mortar, provide waterproof cement mortar and provide flat or multi-layer coating system if painting is necessary. Thickness shall be up to 50 mm. As shown in the attached sketches A-40 & A-41.

128 Chip out existing damaged surfaces in concrete, prepare and prime steel reinforcing bars with epoxy resin anti-corrosive primer where it’s exposing by chipping out of concrete, fill with waterproof cement mortar and provide flat or multi- layer coating system to match original surfaces. As shown in the attached sketch A-42.

129 Prepare existing cracks exceeding 0.3 mm width in concrete to “U” section shape, “U-cut”, by saw-cutting and chipping out, approximately 10 mm width and depth, seal bottom portion of cracks with urethane sealant compound conforming to JIS A 5758, fill with polymer cement mortar filler and provide flat or multi-layer coating system to match original surfaces. As shown in the attached sketch A-39.

130 Replace existing non-asbestos cement board up to 6 mm thickness. Line item shall also include replacing joiners if necessary.

131 Replace existing metal flashing up to 450 mm, width 0.5 mm thickness Galvanized Steel Sheet (GSS) or pre-coated GSS, around doors, windows, wall corners, roof gables and roof ridges etc.

132 Replace existing GSS and/ or fiber reinforced panel

(FRP) with 0.5 mm thickness GSS, pre-coated GSS and/ or

1.2 thickness FRP. New GSS shall be fastened with hook bolts or screw nails with round felt washers. New hook bolts and screw nails shall be stainless steel or galvanized steel.

133 Replace existing plastic vent cover with new aluminum air wall vent on concrete including sealant.

134 Provide new building number sign on aluminum panel board with vinyl building numbers. As shown in the attached sketch A-46 and SECTION 10 14 00.00 33 Exterior Signage.

135~137 Provide new building identification signs with die-cast aluminum letters. Die-cast letter heights are as follows: 305mm, 457mm, and 610mm. As shown in the attached sketch A-46 and SECTION 10 14 00.00 33 Exterior Signage.

138 Provide new LED illuminated building identification signs with die-cast stainless steel including electrical wiring and connect to the existing power source. As shown in the attached sketch A-47 and SECTION 10 14

00.00 33 Exterior Signage.

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PAINTING SUPPLEMENTARY EXPLANATION OF WORK PAGE 54

139 Remove building identification signs and terminate electrical wiring from power source. Patch all mounting bolt holes and blemishes affected by removal work.

140 Replace existing sealants around window and door frames.

As shown in the attached sketches A-43 and A-44.

141 Replace existing sealants around joint of concrete or metal panel. As shown in the attached sketches A-45.

142 Replace existing wooden framing, casing, trim and baseboard etc. with new to match existing. New wood must be same as or similar to existing wood grade.

143 Replace damaged wooden columns and beams with new ones.

New wood must be same as or similar to existing wood grade.

144 Replace PVC half-round or squared gutter up to 200 mm width, and/ or PVC downspout up to 125 mm diameter. Line item must also include replacement of stainless steel supports for gutter and/ or downspout.

145 Replace polycarbonate panel at existing aluminum framed skylight. Remove and reinstall aluminum frames for installation of new polycarbonate panel including sealants and gaskets. Polycarbonate panel must be similar to existing.

146 Replace glass pane including sealant or plastic gasket.

New glass pane must be clear, frosted, tempered or wired pane up to 6.8 mm thickness.

147 Replace existing acrylic lighting fixture covers with new to match existing.

148 Patch holes in steel or metal of box, panel, door or hood etc., with maximum 1.6 mm thickness GSS fastened with blind rivets, tapping screws or weld.

149 (1) Remove and dispose of existing corrugated asbestos cement board (ACB) siding, roofing or gable/ corner flashing and provide new 0.5 mm thickness GSS or 1.2 thickness FRP. Hook bolt or screw fastener must be stainless steel with round stainless steel washer and felt washer.

(2) Remove and dispose of existing flat ACB up to 12 mm thickness and provide new non-ACB ones including replacement of joiners, if necessary.

150 Patch hole of corrugated ACB roofing/ siding or ACB corner/ gable/ ridge board, with 0.5 mm thickness GSS or 1.2 thickness FRP, including sealant compound conforming to JIS A 5758, silicone, urethane etc., around patched hole.

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ABBREVIATIONS

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03/FEB/2021

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AS NOTED

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ABBREVIATIONS ;

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ASPH

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ASPHALT

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CEM

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CEMENT

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CONC

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CONC

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DWG

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DRAWING

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EL

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EFFECTIVE LENGTH

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EXIST

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EXISTING

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EXP

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EXPANSION

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AIR CONDITIONING

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SST

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STAINLESS STEEL

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STL

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STEEL

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THICKNESS

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EXP

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EXPANSION

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MAXIMUM

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MIN

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MINIMUM

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UMW

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URETHANE MEMBRANE WATERPROOF

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TYP

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TYPICAL

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PMB

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POLYMER MODIFIED BITUMEN

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WITH

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DIAMETER

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NOTE ;

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1. ALL ITEM NUMBER(NO.) NOTED IN THE PLANS, ELEVATIONS, AND DETAILS ARE INCLUDED IN THE SCOPE OF WORK. 2. REFER TO THE ROOFING SUPPLEMENTARY EXPLANATION OF WORK FOR DESCRIPTION OF THE ITEM NOTED IN THE DRAWINGS. 3. UNLESS OTHERWISE NOTED ALL ITEMS SHOWN ARE NEW, TO BE FURNISHED AND INSTALLED BY CONTRACTOR.

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HORIZ

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HORIZONTAL

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GALVANIZED STEEL

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GSTL

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PF

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PAINT FINISH

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STRUCT

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STRUCTURAL

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PLYWOOD

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CUI//FEDCON

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CUI//FEDCON

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DEPARTMENT OF THE NAVY

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IWAKUNI, JAPAN

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U.S. MARINE CORPS AIR STATION

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CHIEF ENG/ARCH

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BRANCH MANAGER

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PM/DM

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FEAD IWAKUNI

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ALUMINUM

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ALUM

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TEMP

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TEMPORARILY

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WIDTH

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ASBESTOS CONTAINING MATERIAL

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ACM

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MSBB

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MINERAL SURFACED BUILT-UP BITUMEN

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SQ

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SQUARE

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ROOFING & EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS

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WALL PAINT SYSTEM DETAIL

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EXISTING OR NEW SURFACE

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SEALER

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BASE COAT

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PATTERN COAT

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SEALER

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RUBBER TYPE MULTI-LAYER COAT

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ITEM NO. A116&117, B116&117, C116&117

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EXISTING COATING SURFACE

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SEALER

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TOP COATING FOR EXISTING SURFACE

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ITEM NO. A125, B125, C125

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MULTI-LAYER COATING SYSTEM

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ITEM NO. A118&119, B118&119, C118&119

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EXISTING CRACK

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URETHANE SEALANT

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POLYMER CEMENT FILLER

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PAINT

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EXTERIOR

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EXISTING CONCRETE / PAINT FINISH

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WATERPROOF CEMENT MORTAR WITH ADHESIVE / MULTI-LAYER COATING SYSTEM FINISH

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REMOVE EXISTING SPALLING CEMENT MORTAR

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ITEM NO. A127, B127, C127

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