21B5500_A0004_Atch(1)_Pre-Bid_Inquiries.pdf

SOLICITATION NO. N4008421B5500

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para.

1 01‐Jun‐21 55 PAINTING

SUPPLEMENTAL

EXPLANATION OF

WORK

151‐152 The specification stated "Prepare existing lead‐containing surface with type 3('3‐SHU KEREN) or solvent cleaning to be painted,… Is it acceptable to use the synthetic detergent for solvent cleaning? Please advise.

Synthetic detergent is not acceptable as solvent cleaning.

Refer to specification Section 02 83 13.00 20 Part 2 Products, 2.1 Chemicals and 2.1.1 Chemical Stripper for solvent cleaning requirement.

2 01‐Jun‐21 55 PAINTING

SUPPLEMENTAL

EXPLANATION OF

WORK

153 The specification stated "Prepare existing asbestos‐containing surface with solvent cleaning to be painted….." Is it acceptable to use the synthetic detergent for solvent cleaning? Please advise.

Refer to response to Question 1. 0004

3 01‐Jun‐21 12,16,28 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK

A003 B003 C003

ROOFING AND PAINTING SCHEDULE OF INDEFINITE QUANTITY

WORK‐"A","B" &"C" 003 stated " Remove existing asbestos contained existing mineral surfaced build‐up roofing, various sheet waterproof and urethane waterproof coating and EST QTY is 400 SM. Is there minimum qty of work stated in 003 per order? Please advise.

There is no minimum quantity of work. However, this item was revised with the following estimated quantites:

Item 003(a) for mineral surfaced built‐up roofing ‐ 300 SM Item 003(b) for sheet waterproof ‐ 50 SM Item 003(c) for waterproof coating ‐ 50 SM Roofing Supplementary Explanation of Work was revised.

Refer to PC002 (Attachment (2)). Roofing Schedule of Indefinite Quantity work Work was also revised per Attachment (4).

4 01‐Jun‐21 6,18,30 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK

A032 B032 C032

ROOFING AND PAINTING SCHEDULE OF INDEFINITE QUANTITY

WORK‐"A","B" &"C" 032 stated " Remove existing asbestos contained asphalt single roofing & asphalt roofing felt and provide new asphalt single roofing & asphalt roofing felt and EST QTY is 100SM. Is there minimum qty of work stated in 032 per order? Please advise.

There is no minimum quantity of work. The estimated quantity for this item is 100 SM.

5 01‐Jun‐21 14,26,38 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK

A149 B149 C149

ROOFING AND PAINTING SCHEDULE OF INDEFINITE

QUANTITY WORK‐"A","B" &"C" 149 stated " Replace existing ACB with new non‐ACB and EST Qty is 200SM. Is there minimum qty of work stated in 149 per order? Please advise.

There is no minimum quantity of work. The estimated quantity for this item is 200 SM.

6 01‐Jun‐21 14,26,38 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK

A151 B151 C151

ROOFING AND PAINTING SCHEDULE OF INDEFINITE

QUANTITY WORK‐"A","B" &"C" 151 stated " Lead‐containing surface preparation with sspcw type3 and EST QTY is 200SM. Is there minimum qty of work stated in 151 per order? Please advise.

There is no minimum quantity of work. The estimated quantity for this item is 200 SM.

GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

7 01‐Jun‐21 47 ROOFING

SUPPLEMENTAL

EXPLANATION OF

WORK

48 ROOFING SUPPLEMENTAL EXPLANATION OF WORK 048 stated "Remove existing aluminum coping and provide…..As shown in the attached sketches A‐6,A‐7,A‐10, and A‐11." However, Drawing A‐10 showed existing PC concrete coping to be removed. Cost for aluminum coping removal and PC concrete coping removal can not be estimated as same cost. Therefore, please provide the QTY of PC concrete coping.

The quantity of PC concrete coping was added to the Roofing Supplementary Explanation of Work was revised.

Item 048 was revised as follows:

Item 048(a) for aluminum coping.

Item 048(b) for PC coping.

Roofing Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)). Roofing Schedule of Indefinite Quantity work Work was also revised per Attachment (4).

8 03‐Jun‐21 Page 42 of "Atch(1)_Roofing_ and_Painting_IDIQ _Contract_Spec_0 5May 2021

Item #001 There are two different methods, mineral surface built‐up roofing and urethane waterproof coating in the same cost.

Please tell us the ratio or the number per square meter to estimate them in the same cost.

The roofing system was revised into three (3) types as follows:

Item 001(a) Mineral surface built‐up roofing Item 001(b) Sheet waterproof Item 001(c) Urethane waterproofing coating Roofing Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)). Roofing Schedule of Indefinite Quantity work Work was also revised per Attachment (4).

9 03‐Jun‐21 42 Item#002 Please tell us thickness of existing insulation material due to vary disposal costs.

The thickness of existing insulation material varies from 25mm ~ 60mm. Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

10 03‐Jun‐21 44‐46 Item#017,018,019,020,021,022,024,,025,026,027,028,029&030 Please tell us heat reflectivity of heat reflected top coating.

The heat reflectivity of heat reflected on top coating is 60% minimum.

The 60% high reflectivity was added to the Roofing Supplementary Explanation of Work.

Refer to attached PC002 (Attachment (2)).

11 03‐Jun‐21 44 Item#020 Is it acceptable to provide one‐year workmanship warranty for new polymer modified roofing system?

One‐year workmanship roof warranty is not acceptable.

Roof installer must submit a minimum two‐year workmanship warranty.

12 03‐Jun‐21 46 Item#030 Is it acceptable to estimate manufacturer's recommendation size of new mineral surfaced built‐up roofing?

Yes, it is acceptable to estimate in accordance with manufacturer's recommendation regarding the size of new mineral surfaced built‐up roofing.

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

13 03‐Jun‐21 46 Item#039 Please tell us forms and sizes of existing metal roof due to vary prices by forms and sizes.

Existing sheet metal roofing with varied sizes and forms were added in this item. Item 039 was revised as follows:

Item 039(a) High profile folded sheet metal roof with varied sizes from 88mm ~ 150mm Item 039(b) Low profile folded sheet metal roof with varied sizes from 40mm ~ 80mm The Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

14 03‐Jun‐21 46 Item#041 Please tell us typical sizes of existing metal roofing fascia & gable due to vary construction expenses by sizes.

The size of existing metal roofing fascia and gable varies from 200mm ~ 300mm high. Roofing Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)).

15 03‐Jun‐21 46 Item#043 & 044 Please tell us standard sizes of existing sheet roofing and construction criteria of newly materials.

The standard thickness of existing sheet roofing is 1.2mm and the construction criteria for the new roof material is "michaku bari". Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

16 03‐Jun‐21 54 Item#146 Please tell us the number of new glass panes based by types and thickness due to vary prices and construction expenses by types and thickness.

The new glass pane replacement must be laminated clear and frosted glass with varied thickness of 4.0mm ~ 6.0mm thickness and the thickness for wired glass is up to 6.8mm.

Item 146 was revised as follows:

Item 146(a) for clear glass pane.

Item 146(b) for frosted glass pane.

Item 146(c) for tempered glass pane.

Item 146(d) for wired glass pane.

Painting Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

17 03‐Jun‐21 36 Item#100 Please tell us form and size of existing wooden beams because unit is LM.

To clarify the requirement of Item #100 for wooden beams, the LM (quantity) was revised to SM (quantity). Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

18 03‐Jun‐21 36 Item#102 Please tell us how many coats of paint on existing steel and galvanized steel framing/ box /casing/door/ window surfaces?

The number of coats of paint on existing steel & galvanized steel framing, box, casing, door and window surfaces are not required to be verified.

For Item 097~125 Painting Supplementary Explanation of Work repainting requirements, refer to specification Section 09 90 00 Paints and Coatings, Part 3 Execution, 3.3 Preparation of Metal Surfaces and 3.5 Application for the required coating systems.

As a clarification for Item 102, this item was revised as follows:

102(a) for steel door and frame.

102(b) for steel window frame.

102(c) for steel electrical power box.

Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

19 03‐Jun‐21 36 Item#103 Please tell us typical sizes of existing wooden framing/ box/ casing/base board/door/ window.

Item 103 for repainting existing wooden door and frame was revised as follows:

Item 103(a) Repaint existing wooden door and frame surfaces.

Item 103(b) Repaint existing glazed wooden window and frame surfaces.

Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity Work was also revised per Attachment (3).

20 03‐Jun‐21 36 Item#104 Please tell us how many coats of paint on existing aluminum panel surfaces.

Existing aluminum panel surfaces must be refinish and re‐ coated with new finish.

Refer to specification Section 09 90 00 Paints and Coatings, Part 3 Execution, 3.2 Surface Preparation and 3.3 Preparation of Metal Surfaces.

21 03‐Jun‐21 36 Item#095 Does water cleaning on lead‐free surface mean that Government requires jet water cleaning? (Please tell us criteria of water pressure cleaning.)

Jet water (water blasting) cleaning for large areas maybe used as stated on Item 095 on Painting Supplementary Explanation of Work.

22 03‐Jun‐21 37 Item#126 Please tell us finish thickness of water‐proof urethane type floor coating.

Item 126 on Painting Supplementary Explanation was revised to indicate the requirement for waterproof urethane floor coating. Refer to attached PC 002 (Attachment (2)).

23 03‐Jun‐21 37 Item#131 Please tell us standard size of existing metal flashing.

The metal flashing replacement as noted on Item 131 was revised. Refer to attached PC 002 (Attachment (2)).

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

24 03‐Jun‐21 38 Item#132 Please tell us the number based on galvanized steel or FRP separately. Also please tell us existing standard sizes due to vary material costs.

Item 132 quantities were revised into two (2) different item numbers as follows:

Item 132(a) Galvanized steel ‐ 400 SM Item 132(b) FRP ‐ 100 SM Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

25 03‐Jun‐21 38 Item#133 Please tell us standard size of existing plastic vent cover due to vary prices of aluminum vent.

The size of existing plastic vent cover varies from 75mm ~ 200mm. Painting Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

26 03‐Jun‐21 53 Item#134 Please tell us letter height of new building number sign.

The letter height of new building number sign was indicated on drawing sheet A‐46. Refer to PC001 issued with Amendment 0001.

27 03‐Jun‐21 53 Item#134 Please tell us standard installation height of new building number sign due to vary installation costs

The installation height of new building number sign is up to 12 meters.

28 03‐Jun‐21 53 Item#135&137 Please tell us thickness of new die‐cast aluminum letters.

The thickness of new die‐cast aluminum letter was indicated on specification Section 10 14 00.10 Exterior Signage, Part 2 Products, 2.1 Modular Exterior Signage System, 2.4 Aluminum Alloy Products.

29 03‐Jun‐21 53 Item#138 Please tell us typical distance between new installed LED illumination and existing power panel. If it has a long distance, we will request "lock out".

The distance between new illuminated sign and existing electrical power panel varies from building to building, we can only provide an approximate distance. The estimated distance for this item is up to 100 meters.

30 03‐Jun‐21 53 Item#138 Are new LED illumination GFMs or materials provided by contractor? We believe LED illumination are GFMs, but we can't find GFMs in downloaded all attachments.

The new illuminated sign must be provided by the contractor.

31 03‐Jun‐21 54 Item#139 Please tell us approximate distance between existing building identification signs and existing power source panel. We can't find it on A‐05 drawing.

Distance would be based from the main disconnect switch or panel the light is being powered. It varies from building to building so we can provide an approximate distance. The required distance for this item is up to 100 meters.

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

32 03‐Jun‐21 47 Item#049 Please tell us standard size of new stainless steel fasteners.

The standard size of the new stainless steel fastener for the aluminum coping must be 6mm x 35mm minimum. Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

33 03‐Jun‐21 48 Item#062 Please tell us standard size of new stainless mesh.

The standard size of the new stainless steel strainer must be up to 150mm. Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

34 03‐Jun‐21 48 Item#064 Please tell us existing concrete size to estimate plastering work.

The requirement for this item was for the removal of existing foundation. The required quantity was specified only on cubic meter (CM) for unit cost.

35 03‐Jun‐21 48 Item#065 Please tell us existing concrete size to estimate plastering work.

The requirement for this item was specified only on square meter (SM) unit cost for plastering work.

36 03‐Jun‐21 49 Item#080 Is it available to estimate costs to assemble and disassemble of double‐pole scaffolding for B#600 height from ground to roof as standard. This is the biggest cost.

No, it is not acceptable to use the height of B600 for this item. The building height at MCAS Iwakuni varies from 1‐ story low‐rise buildings to 6‐story midrise buildings. The building height varies from 4.0m ~ 21m.

Roofing Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)).

37 03‐Jun‐21 50 & 51 Item#091,092,093 & 094 Please tell us manufacture names and standard sizes of new acrylic skylights because 600x600、900x900 and 1300ｘ1300 skylights will go out of production or be discontinued. There is not shown skylights approved by fire law. Please tell us Government opinion.

We verified and confirmed with the skylight supplier that the new acrylic skylights sizes 600x600, 900x900 and 1300x1300 are still available in the market.

38 03‐Jun‐21 52 Item#105,108,113，123，124 Please tell us how many coats of paint Government requires.

This is important for us.

For Item 105 and 108 repainting requirement of existing steel surfaces, refer to specification Section 09 90 00 Paints and Coatings, Part 3 Execution, 3.3 Preparation of Metal Surfaces.

For Item 113 repainting requirement of pvc gutter and downspout surfaces, refer to specification Section 09 90 00 Paints and Coatings, Part 3 Execution, 3.10 Miscellaneous Painting, 3.10.2 Plastic Gutters and Downspouts.

For Item 123 resurfacing requirements of existing non‐slip floor coating , refer to attached PC002 (Attachment (2)).

For Item 124 resurfacing requirement of existing roof coating. Refer to attached PC002 (Attachment (2)).

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

39 07‐Jun‐21 Atch(4) Roofing Schedule, Page 3

030 030: "Provide new mineral surfaced build‐up roofing for maintenance", does this mean deliver the material for maintenance?

Item 030 is not a roof material for maintenance. Item 030 refers to the walking traffic path for maintenance staff walking path access.

The requirement for this item was revised to clarify the intent of this item. Roofing Supplementary Explanation of Work was revised. Refer to attached PC002 (Attachment (2)).

40 07‐Jun‐21 Atch(4) Roofing Schedule, Page 3

033 & 034 033 & 034: There is no mention of heat resistant coating in SPEC 07 52 00. Can we assume that it is a heat‐reflective top coat from a waterproofing manufacturer?

Heat reflected coating was noted on Specification Section 07 52 00 Modified Bituminous Membrane Roofing, Part 2 Products, 2.1.1 Polymer (PMB) Modified Bituminous Roofing System, 2.1.1e Heat Reflected Coating.

Heat reflected coating is the required top coating from the waterproofing manufacturer.

41 07‐Jun‐21 Atch(4) Roofing Schedule, Page 3

039 & 040 039 & 040: Is it correct to assume that the metal roof is a folded plate roof? Please show us the shape and sketch.

Yes, the existing metal roof is a folded sheet metal roof. For shape of folded sheet metal roof, refer to response to Question 13.

42 07‐Jun‐21 Atch(4) Roofing Schedule, Page 4

048 048: The width of the aluminum coping is unknown. Can we assume that it is 250mm wide?

Aluminum coping width varies from 200mm ~ 250mm.

Roofing Supplementary Explanation of Work was revised.

Refer to attached PC002 (Attachment (2)).

43 07‐Jun‐21 Atch(4) Roofing Schedule, Page 4

050 050: The width of the aluminum expansion cover is 450mm and 600mm in the sketch of A‐21 and A‐22. Please indicate the quantity for each. The unit price is very different.

Item 050 was revised and the width of aluminum expansion cover were added and as follows:

Item 050(a) Aluminum expansion cover, W1=up to 450mm ‐ 100 SM Item 050(b) Aluminum expansion cover, W2=450mm ~ 600mm ‐ 100 SM Refer to attached PC002 (Attachment (2)). Roofing Schedule of Indefinite Quantity work Work was also revised per Attachment (4).

44 07‐Jun‐21 Roofing Supplementary Explanation of Work, 079 Roofing Supplementary Explanation of Work 079: Does surface preparation of lead‐based paint mean removing it?

Existing lead based paint surfaces needs to be repainted only. The LBP will not be removed and must be encapsulated with new paint finish.

45 07‐Jun‐21 Atch(4) Roofing Schedule, Page 7

080 080: The unit price of scaffolding materials varies greatly depending on the lease period. Is it correct to assume that the installation period of scaffolding is 365 days (One year)?

Yes, the installation period of scaffolding is 365 days or one year.

46 07‐Jun‐21 Atch(4) Roofing Schedule, Page 8

091, 092, 091, 092, 093: Please indicate the manufacturer and part number of the existing skylight.

The Government has no as‐built record and product data of the existing skylight.

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

47 07‐Jun‐21 Painting Supplementary Explanation of Work, 097 ‐ 125 Line items 008 and 017 indicated in Painting Supplemental Explanation of Work 097‐125 (a) have different contents; can we replace them with 104 and 113? Can we also replace 023 and 045 with 122 and 150 respectively for (b)?

The Painting Supplementary Explanation of Work 097‐125 was revised as follows:

(a) Line item 008 was revised to Item 104 and Item 017 was revised to Item 113.

(b) Preparation for Line Item 023 was revised to 122 and Item 045 was revised to Item 150. Refer to attached PC002 (Attachment (2)).

48 07‐Jun‐21 Atch (3) Painting Schedule, Page 11

142 142: We cannot estimate with quantity alone. Please provide us with drawings (sketches) or photographs.

The Painting Supplementary Explanation of Work Item 142 was revised as follows:

142(a) Wood window head, sill, jamb and mullion.

142(b) Wood window trim.

Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

49 07‐Jun‐21 Atch (3) Painting Schedule, Page 11

143 143: We cannot estimate with quantity alone. Please provide us with drawings (sketches) or photographs.

The Painting Supplementary Explanation of Work Item 143 was revised as follows:

143(a) Decorative wood post and filler.

143(b) Wood beam.

Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

50 07‐Jun‐21 Atch (3) Painting Schedule, Page 11

145 145: We cannot estimate with quantity alone. Please provide drawings (sketches) or photographs.

The polycarbonate panel thickness has been added on the Painting Schedule of Indefinite Quantity Work Item 145.

Refer to Attachment (3).

51 07‐Jun‐21 Atch (3) Painting Schedule, Page 11

146 146: Please indicate the quantity of each type of glass pane. Painting Supplementary Explanation of Work Item 146 was revised as follows:

146(a) Clear glass 146(b) Frosted glass 146(c) Tempered glass 146(d) Wired glass Refer to attached PC002 (Attachment (2)). Painting Schedule of Indefinite Quantity work Work was also revised per Attachment (3).

52 07‐Jun‐21 Atch (3) Painting Schedule, Page 11

147 147: Please indicate the model and part number of lighting fixtures.

Refer to Attachment 1 As‐Built Drawing included in PC002 for light fixture product data for reference use only.

53 07‐Jun‐21 Atch (3) Painting Schedule, Page 12

164 164: Are gondola lifts used for loading and unloading of materials? If it is for materials, can we assume that the maximum load is 900 kg or less? Or is it for repairing or cleaning exterior walls by suspending with wires?

Gondola lift for high rise was revised to bucket truck for Midrise building. Painting Supplementary Explanation of Work and Painting Schedule of Indefinite Quantity Work for this line item were revised to indicate bucket truck for Midrise buildings. Refer to Attachments (2) and (3).

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

54 07‐Jun‐21 Atch (3) Painting Schedule, Page 12, and Painting Supplementary Explanation of Work, 164 In PAINTING SCHEDULE OF INDEFINITE QUANTITY WORK No.

164, the quantity for gondola lift is indicated as ten (10).

However, in Supplementary Explanation of Work No. 164, it is indicated as two (2) gondola lifts. Which is the correct quantity?

Gondola lift for high rise was revised to bucket truck for midrise buildings. Item 164 quantity was revised per day.

Refer to Attachments (2) and (3).

55 07‐Jun‐21 Atch (3) Painting Schedule, Page 12

164 164: The unit price of gondolas varies greatly depending on the lease period. Is it correct to assume that the installation period of the gondola lift is 365 days (1 year)?

Refer to Question 54. 0004

56 07‐Jun‐21 Atch (3) Painting Schedule, Page 12

165 165: The unit price of scaffolding materials varies greatly depending on the lease period. Is it correct to assume that the installation period of scaffolding is 365 days (1 year)?

No, the project will vary from project to project. Refer to the required quantities.

57 08‐Jun‐21 If there are multiple Task Orders at the same time, do the QC Manager, SSHO, and Superintendent have to be dedicated to each Task Order? Or can they serve concurrently?

For single or multiple task order occuring at the same construction period, each task order shall have a project dedicated QC manager, SSHO, and superintendent. If project site locations is adjacent to each other, the Contractor may submit a request in writing to the Contracting Officer for considerations using same key personnel (i.e., QC manager, SSHO, and Superintendent) for adjacent projects. Also for multiple project site locations, if execution of project site locations are occuring at the same construction period, each project site location shall have a site dedicated qualified designated representative assigned by the SSHO.

58 10‐Jun‐21 14,26,38,54 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK/

PAINTING

SUPPLEMENTARY

EXPLANATION OF

WORK

A142 B142 C142

Specification PAINTING SUPPLEMENTARY EXPLANATION OF WORK 142 stated "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". Also, ROOFING AND PAINTING SCHEDULE OF INDEFINITE QUALITY

WORK A142,B142 and C142's Unit is CM(Cubic Meter). Please provide more detailed information about the existing wooden framing, casing, trim and baseboard for proper cost estimations.

Refer to Question 48. 0004

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

59 10‐Jun‐21 14,26,38,54 ROOFING AND

PAINTING SCHEDULE

OF INDEFINITE

QUANTITY WORK/

PAINTING

SUPPLEMENTARY

EXPLANATION OF

WORK

A143 B143 C143

Specification PAINTING SUPPLEMENTARY EXPLANATION OF WORK 142 stated "Replace damaged wooden columns and beams with new ones. New wood must be same as or similar to existing wood grade. Also, ROOFING AND PAINTING SCHEDULE OF INDEFINITE QUALITY WORK A143,B143 and C143's Unit is CM(Cubic Meter).Please provide more detailed information about the existing wooden framing, casing, trim and baseboard for proper cost estimations.

Refer to Question 49. 0004

60 11‐Jun‐21 ROOFING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Roof 039.

It is stated to remove existing metal roof and provide new precoated galvanized metal roof, if there is a roof specification or reference drawing, please provide it. Also, would it be acceptable to consider the new precoated galvanized metal as a color galvanium steel plate?

Refer to Question 13. 0004

61 11‐Jun‐21 ROOFING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Roof 040.

As described above, would it be acceptable to consider the new precoated galvanized metal as a color galvanium steel plate?

Yes, it is acceptable to use colored galvanium steel for roof deck.

62 11‐Jun‐21 ROOFING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Roof 063.

It is stated to "remove existing rain gutter & gutter hanger and provide new PVC gutter & stainless gutter hanger". Would it be acceptable to consider that eaves gutters + funnels + hanger are newly installed and "elbow and downspouts" are NOT included in this item?

Item 063 Roofing Supplementary Explanation of Work and Roofing Schedule of Indefinite Quantity Work were revised to include PVC downspout as follows:

Item 063(a) PVC gutter Item 063(b) PVC downspout Refer to Attachments (2) and (4).

63 11‐Jun‐21 ROOFING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Roof 091, 092 and 093.

It is stated to replace existing acrylic skylight with a new one, would it be acceptable to consider that the existing acrylic skylight is only the dome‐shaped part and the frame remains as existing?

Yes, the existing dome‐shaped acrylic skylight will be replaced. The existing skylight frame to remain.

64 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 132.

It is stated to newly replace existing GSS and/ or fiber reinforced panel (FRP), however, what product to be replaced with a new one? Due to the price difference between the GSS and FRP, it is not possible to enter an appropriate unit price in this item.

Refer to response to Question 24. 0004

65 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 133.

It is stated to replace plastic vent cover with new aluminum.

Please specify the specifications / size that can be used for estimate.

Refer to response to Question 25. 0004

PROJECT TITLE/LOCATION: ROOFING AND EXTERIOR PAINTING IDIQ CONTRACT FOR VARIOUS PROJECTS AT U.S. MARINE CORPS AIR STATION IWAKUNI, JAPAN

GOVERNMENT PRE‐BID INQUIRY FORM Amendment 0004 Attachment (1)

Page Section Para. GOVERNMENT RESPONSE Amend No.

Question No.

Date Received

REFERENCE

QUESTION

66 11‐Jun‐21 ROOFING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 138.

It is stated to provide 30 EA (30 places) signboard illuminated with electrical work, however would it be acceptable to consider that there is an existing power supply already connected and controlled to turn on/off automatically?

This item required a new LED illuminated building identification sign including new electrical wiring. There are no existing power supply for this item.

67 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 142.

It is stated to newly replace existing wooden framing, casing, trim and baseboard. please specify the specification if there is any that can be used for estimate.

Refer to response to Question 48. 0004

68 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 143.

Also for the replacement of damaged wooden columns and beams, please specify the specification if there is any that can be used for estimate.

Refer to response to Question 49. 0004

69 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 145.

Regards to replacing the polycarbonate panel, if there is specification etc. indicating the size of polycarbonate, thickness and shape (whether it has R‐shape or not), please specify for estimate purpose.

Refer to response to Question 50. 0004

70 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 146.

It is stated to newly replace the existing glass pane in door or of the window, if there are specifications that can be used to estimate the type and size of the glass, please specify.

Refer to response to Question 16. 0004

71 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 164.

It is stated to provide gondola lift, however would it be acceptable to consider 25t rough terrain crane?

Refer to response to Question 53. 0004

72 11‐Jun‐21 PAINTING SCHEDULE

OF INDEFINITE QUAN

TITY WORK

Painting 166.

Does a barricade indicate a "single‐tube barricade" or "type A barricade", or does it require a 1.8m fence? The unit price will change accordingly. Please specify the specification for the estimate.

Type A barricade is not an acceptable safety barricade.

Single tube barricade must be steel tube as noted on specification Section 01 50 00 Temporary Construction Facilities and Controls, Part 2 Products, 2.2 Temporary Traffic Control, 2.2.3 Fencing, 2.2.3a requires a 1.8 m high steel safety fences, steel tube framing.