W912WJ-16-R-0007_-_Amendment_7.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is to extend the proposal response date to 6/24/2016 and provide responses to RFI's.

1. CONTRACT ID CODE PAGE OF PAGES

1 15

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 27-May-2016

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912WJ-16-R-0007

X 9B. DATED (SEE ITEM 11)

05-Feb-2016

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

27-May-2016

CODE

US ARMY ENGR DISTRICT, NEW ENGLAND

696 VIRGINIA ROAD

CONCORD MA 01742-2751

W912WJ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912WJ-16-R-0007

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 10-Jun-2016 04:30 PM to 24-Jun-2016 04:30 PM.

SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

The following have been added by full text:

AMENDMENT 7

RFI’s

1. Another RFI would be that spec section 05 50 15 Structural Ceiling Grid exists however we find no reference to it in the drawings. Does it exist and if so please advise what room(s).

Response: The specification SECTION 05 50 15 STRUCTURAL CEILING GRID is used for support of the wood ceiling within the commons space above the platform. This is identified as Met Strut in the drawings and can be seen in details on sheets A831 and A663.

2. We could find no reference to the requirements for the asphalt sidewalks. I.E. thickness of base and top course and sub-base material/thickness.

Response: 2” asphalt surface course with 4” graded aggregate base.

3. Specification section 10 14 01 exterior Signage indicates in 2.1.1.3 to provide signs in sizes shown drawings. Drawing CI-105 indicates what signs to provide but does not indicate their sizes. Please revise drawing CI-105 to include the sign sizes.

Response: CI-105, See note 2. All signs, striping and pavement markings shall be in accordance with the manual on uniform traffic control devices (MUTCD).

4. Per A-501, the concrete seat walls are to be sandblasted at the entry. Are the seat walls at the courtyard to be sandblasted also? Please verify grey concrete is to be used.

Response: See Sheet L-500, Detail 7/L-500 and L-501, Detail 13/L-501, provide integrally colored concrete selected by Contracting Officer from manufacturer’s full range.

5. Please provide a specification for the stepping stone pavers, cobblestone pavers and unit pavers.

Response: For Stepping stone pavers, Detail 12/L-500 specifies a 3’x3’ concrete paver, thickness to be 2”, color to be determined from manufacturer’s standard colors. For Cobblestone pavers, Detail 13/L-500 specifies 9”x5” plus/minus cobblestone. Variation in sizes is acceptable. Weathered, color – light to medium grays. For Unit pavers, Detail 14/L- 500 specifies paver size. Color to be determined from manufacturer’s standard colors.

6. Detail 1/L201 shows a play area where we are to provide natural wood logs of varying sizes.

Please clarify what type of wood and what size of logs are to be provided.

Response: Size of log is shown on detail 2/L-502. Intent is for some of the existing trees to be removed during demolition to be reclaimed for the playground logs, preferably oak.

7. Specification Section 11 68 14, 2.2F call for 2’ OC Vertical Ledgers but the standard of this type of wall is 4’ Horizontally Ledgers. Please clarify the 2' OC is required for this application?

Response: Provide wall support as specified.

8. Specs call for 3 top rope anchors for the wall but 8’ walls normally do not require rope anchors. Are the rope anchors required for this wall?

Response: Provide rope anchors as specified.

9. Drawing E-001, option 4 indicates the installation of type B2 lights to be installed for the covered portion of the walkway. However, there does not appear to be a drawing that shows the location of the existing Lighting Panel L1A that the lighting power is to tie into at the Middle School. Please provide a location of this panel and clarify if this new power is to be provided by overhead or underground.

Response: Panel L1A is located in the Middle School Main Electrical Room. Approximate location where existing underground service enters Middle School on Drawing ES-101. Temp.

Power to walkway shall be fed underground.

10. Drawing ES-102 indicates new (4) 4" underground communication conduits are to intercept and extend to the primary school MDF room. Please provide a clear delineation of where these conduits are to be intercepted. In addition, please clarify what type of existing cabling is intercepted and if a new handhole or manhole is to be installed for these communication conduits and cabling.

Response: Exact location will be field verified by the contractor. Existing cables are to be removed, new cable shall be provided are per drawings. A handhole is not required.

11. Drawing E-001, Option 13 indicates to provide 277 Volt power for the (3) new Type M2 light poles and bases for the Parking Lot. Please provide detail indicating the location and panel for this lighting power tie in.

Response: Panel PL1 enclosure is identified on Drawing ES-102

12. Drawing ES-102 indicates new Type M1, M2 Light Poles & bases and M5 lighted bollards to be installed. Please provide detail indicating the location and Panel for these lights and bollards to tie into.

Response: Refer to Drawing Note 13 on Drawing ES-102

13. Are there any differences between SC and SC1? I-001 only show detail for SC1 and SC2.

Response: Transition details on Sheet I-001 are based on material types and not specific finishes. Finishes SC1 and SC2 are both variations of a sealed concrete finish (SC). SC-2 is polished concrete in the ART ROOM.

14. Please clarify if any of the underground electrical service lines for the Temporary Classroom Trailers is to be removed with the removal of the existing Pad Mounted Transformer or if the electrical service lines are to be abandoned in place.

Response: Temporary conductors shall be removed, conduit may be abandoned in place.

15. Section 11 of the solicitation indicates to complete the project within 800 calendar days after notice to proceed. Specification Section 00 80 00 1.1.c. indicates to complete the project within 900 Calendar days from notice to proceed. Please clarify the correct calendar days for this project.

Response: The correct calendar days for this project is 900 days.

16. Fire Alarm specifications require that the new fire alarm system be interconnected and compatible with the existing Middle School fire alarm system. Please provide the make and model of the existing Middle School FACP.

Response: Existing Middle School FACP is EST-3 by Edwards United Technologies.

17. Also, please confirm that the use of fire alarm rated Type MC Cable is acceptable in accordance with Specification Section 28 31 76 – 2.24.

Response: Yes.

18. Drawing M303 is a piping diagram that shows l" piping to the option #8 radiant slab heating branching off of the 4"hws&r main. On the plan view drawings M-401 and MP-111 there is no piping shown and the manifolds are located a large distance from the mechanical room where the 4" piping is shown.

Please clarify the piping routing and sizing of the option #8 radiant slab system.

Response: If Bid Option #8 is accepted, it is permissible to connect each radiant manifold to the closest main in a lieu of running back to the 4” main as long as the pipe sizes are increased as follows.

1. Increase the 2-1/2” HWS&R take-off from the main 4” HWS&R on the 2nd Floor at column line PL & P5 to 3”. The 3” HWS&R shall run down to the first floor prior to reducing to 2” HWS&R (at AVB-1A-7).

2. Increase the 1-1/2” HWS&R take-off from the 3” HWS&R on the 1st Floor at column line PP & P5 to 2”. The 2” HWS&R pipes will continue to the take-off to Zone 3 & 4 manifold.

3. Increase the 1-1/2” HWS&R just North of column line P11 & PU on the 1St Floor to 2” and maintain the 2” pipes size until after the AVB-2A-12 branch off.

19. Drawing No. S – 111 Structural need to label the Interior spread footing, also need a footing legend?

Response: Please see column schedules on drawing S-401 and S-402 for footing information.

20. Pa rtition G7A on A601, G indicates GWB Stud, 7 indicates Up to Clg Two, and the A is acoustic .

• Can you clarify the entire assembly is to the deck?

• Or, is the entire assembly to the ceiling?

• Or, is the 2” layer only to 6” above ceiling and the remainder of the partition to deck?

Response: Wall assembly to underside of structure. See Details 18,19/A-601.

21. Per drawing A-407, it is showing a metal panel system over the Skylights. Please provide specification section for metal panels.

Response: Provide metal flashing with Flat locked seams painted to match skylight frame finish. Refer to Section 07 60 00 Flashing and Sheet Metal for related information.

22. Drawing CI-104 shows 2 bollards per note 23 near the south entrance of the building. There are what appears to be 8 more bollards near the basketball court but there are no notes. Drawing L-202 looks like these could be trash receptacles but they aren't labeled on that sheet either. Please clarify.

Response: These are tree pits as per detail 1/L-503. See sheet L-401 for tree planting information.

23. Per drawing A-401, it calls out an RS-3 on detail 7; however, in the Legend it only calls out a RS-1 and RS-2. Please clarify if there is to be another type of Fiber Reinforced Cement Assembly.

Response: RS-3 (thickness varies per details) is to be provided as indicated on 7/A-401.

Information for the RS-3 assembly can be found at 10/A501.

24. Per drawing A-402, it calls out an RS-4 on detail 5; however, in the Legend it only calls out a RS-1 and RS-2. Please clarify if there is to be another type of Fiber Reinforced Cement Assembly.

Response: RS-4 (horizontal ceiling application) is to be provided as indicated on 5/A-402.

Additional information on the RS-4 assembly can be found at Detail 6/A501.

25. Please provide specifications in section 10 10 00 on tack boards. Tack boards, trackable wall coverings, and trackable panels can be found in drawings A-634 through A-639.

Response: Refer to the Room Finish Schedule (Sheet I-003) for tackable wall finishes (XW2) & (XW3). These are further specified in spec Section 09 72 00 WALLCOVERINGS.

They are also identified on Finish Location Plans.

26. Per drawing A-201 detail 1 of East Elevation, a metal sign of "Hanscom Primary School" is shown. Please provide dimensional signage specifications as to the details of the size, material, mounting, etc. of the metal sign.

Response: Refer to Detail 3 /A-408 canopy details.

27. Per specification section 10 28 13 2.2.3 tilted mirrors (TA-18* are to be provided.

However no tilted mirrors can be found on A-701 or listed in the Toilet Accessory Schedule on A-702. Please provide locations of tilted mirrors on drawings.

Response: Tilted mirrors are not required as long as the mirror installation meets the requirements of the ABA Accessibility Standard for Department of Defense Facilities. (40” max above finish floor to 74” minimum above finish floor.)

28. Diaper changing stations are spaced in 10 28 13 and show up on the toilet accessory schedule on A-702. However the diaper changing stations cannot be found on A-701.

This is also true with the towel bar (TA-2). Please provide a quantity of these items if they are to be included with this project.

Response: Provide TA-21H Diaper Change Station in Boys 1C13 and Girls 1C12. Refer to drawings A-701 and A-702 for TA-2 Paper Towel Dispenser locations.

29. Elevator cab finish – drawing I-110 provides the basis of design for the elevator cab interior walls, ceiling, and frame as being Forms & Surfaces 1000A Stainless Steel Seastone. We have been informed this is an extremely high-end and costly material for a school elevator and wanted to confirm it is the desired finish. It is not what was required or used on the Middle School.

Response: Please provide per specification and Interior finish drawing I-110.

30. Spec section 28 20 01 Security System, paragraph 3.2.1 indicates conduits to be Rigid Galvanized Steel, can EMT or MC be used? Also, the paragraph indicates security wiring cannot be placed in other raceways etc. Does all security cabling need to be in a conduit or can it be supported independently in concealed spaces by J hooks or other free hanging method?

Response: Security wiring shall be in conduit and shall not share conduit with any other building wiring system.

31. The fire alarm spec states the new devices are to be compatible with the existing system. However, it does not list the current manufacturer. What is the current system in place at the primary school?

Response: EST-3 by Edwards United Technologies.

32. Drawing M-303 is a piping diagram that shows 1" piping to the option #8 radiant slab heating branching off of the 4"Hot water Supply & Return main. On the plan view drawings M-401 and MP-111 there is no piping shown and the manifolds are located a large distance from the mechanical room where the 4" piping is shown. Please clarify the piping routing and sizing of the option #8 radiant slab system.

Response: Repeat Comment.

33. If bid option 8 (radiant floor heating) is taken, would the fin tube radiators be eliminated in these areas? If so, the hot water supply and return piping system could change dramatically and there is no specific plan showing those effects. How should this be figured?

Response: if Bid Option 8 is awarded, Fin Tube Radiators would not be eliminated in these areas (Zone 1 thru 7).

34. Plumbing Specification allows for PVC piping underground, but no PVC piping aboveground on the building drains. The second floor sanitary drawing shows vents 1 1/2" in diameter. That size pipe would only be available in PVC and not in CI no-hub.

Please clarify which piping materials will be allowed for the sanitary and storm drains both above and below the slab.

Response: The plumbing specification does allow for other materials to be used for above ground vent piping besides no-hub cast iron. Many of these materials, such as #16 - DWV copper drainage tube, are available in sizes under 2" and may be used for those smaller pipe sizes.

35. Specification Section 28 20 01, paragraph 1.3 states to provide an Electronic Security System (ESS) as described and shown including installation of any Government Furnished Equipment. Please clarify if there is any Government furnished equipment to be furnished and to be installed per this contract. If so, please provide a list of this Government furnished equipment and locations

Response: There will be no Government equipment furnished as part of the security system.

36. Per drawing A-121, there is a note to Demolish Parapet to provide continuous outdoor learning area. However, Detail 4/A-513 shows the existing wall to remain.

Please clarify if this parapet wall shown on Detail 4/A-513 is to be removed or remain.

Response: Remove existing FRCP system only to allow new roof/expansion joint construction. Provide new FRCP per Detail 4/A-513 for base scope of work. Demolition of existing parapet construction shall be required as part of scope of work identified as Bid Option #14. See Sheets A-951 and A-955.

37. Drawing A-121 indicates the existing parapet wall on the Middle School is to be removed. Please confirm the contractor who is awarded Primary School Contract would not be responsible for the existing roof warranty for the Middle School. In addition, please provide the exiting Middle School roof manufacturer, model, and type.

Response: For base scope, the existing roofing is not impacted by new construction per Detail 4/A-513. Per Roofing Shop drawing submittals, Existing Roof system is Sarnafil G410 .072 White adhered, 20 year warranty. Work performed as part of the scope requirements identified as Bid Alternate #2 and #14 shall be coordinated with requirements of the existing roof system such as to maintain the system warranty.

38. Referring to drawing A-131 Roof Plan, there is 27 roof drains that do not appear on the structural drawings. We could not locate a detail to provide steel framing around these roof drains. Is there steel framing required for the roof drains?

Response: Please see Section 05 30 00 STEEL DECKS, paragraph 3.2.2. 2x2x1/4 inch steel angles for holes and openings 6 to 12 inches.

39. Referring to this note on A006 Will all accessories attached to primary steel like the bent plate and HSS (see below for examples) be fireproofed as well or should these just be shop primed?

Response: Bent plates and ATFP HSS framing within exterior wall construction shall be shop primed. All structural steel directly exposed to weather shall be hot dipped galvanized per drawing S-001, Structural Steel Notes 7.

40. Loose lintel (structural steel note 13/S-001) will be supplied and installed by Misc.

Metal Fabricator. Please confirm.

Response: General Contractor shall determine which sub-contractor to supply and install the Loose Lintel.

41. Post elevator rail support (S-111, S-121, S-131 & 2/S-503) will be supplied and installed by Misc. Metal Fabricator. Please confirm.

the Elevator railing support posts.

42. Railing (15-16-17-19-21/S-302) will be supplied and installed by Misc. Metal Fabricator. Please confirm.

the railing.

43. Refer on A-131 there is 27 roof drain not shown on –S- drawings. Would you want us to consider some frame around these openings? If yes, do we have to frame it in Channel like referred on detail 10/S502.usually those kind of frame are done with Angle…less expensive.

Response: Please see Section 05 30 00 STEEL DECKS, paragraph 3.2.2. 2x2x1/4 inch steel angles for holes and openings 6 to 12 inches.

44. Referring on note on drawing A006, will all accessories attached on primary steel like bent plate, HSS (see below for example) will be fireproofed as well or should be shop primed?

Response: Bent plates and ATFP HSS framing with in exterior wall construction shall be shop primed. All structural steel directly exposed to weather shall be hot dipped galvanized per drawing S-001, Structural Steel Notes 7.

45. The solid surface section of the specs for the Primary School lists solid surface window stools, but are not indicated. Details 8/A-503 and 4/A-505 may indicate solid surface but aren’t specific.

Response: Provide ½” SS Solid surface at window stools

46. Drawing E-001 Options 6, 8 & 9 references a Drawing HPE-1. However, Drawing HPE-1 does not appear to be provided with the Contract Documents. Please provide Drawing HPE-1 or clarify the correct drawing to be referenced for Options 6, 8 & 9.

Response: Refer to Drawing E-605.

47. Specification section 12 2200 Cubicle Track and Hardware Part 1.4 Quality Control states, “ Factory form bends on a 12 inch radius…” while Part 2.1 Cubicle Track System states, “Bends shall be minimum 18 inches radius.” Please clarify radius for Cubicle Track bends.

Response: Refer to Treatment/Exam Room 1C26. What is being referenced is from Spec Section 10 21 23 CUBICLE TRACK AND HARDWARE. Provide 90° factory bent track sections with one-foot radii to mate with straight track sections per manufacturer instruction for track.

48. The list of plans noted A-005 Temporary Classroom Plan, but we can’t find that plan in any of the posted info, including the 3 addenda. Please advise.

Response: Sheet A-005 was intentionally not included in the drawings. Drawing A-005 is crossed out on the Index to Drawings (Sheet G-001)

49. Drawing A-005 is missing. Will it be issued later as an addenda?

Response: Sheet A-005 was intentionally not included in the drawings. Drawing A-005 is crossed out on the Index to Drawings (Sheet G-001)

50. Please confirm that the use of fire alarm rated Type MC Cable is acceptable in accordance with Specification Section 28 31 76 – 2.24.

Response: Fire alarm rated MC cable is acceptable.

51. Section 26 20 00-3.1.3 says to “Provide insulated conductors installed in rigid steel conduit, IMC, rigid nonmetallic conduit, or EMT, except where specifically indicated or specified otherwise or required by NFPA 70 to be installed otherwise;” however Section 26 20 00-3.1.3.2 says to “Install in accordance with NFPA 70, Type MC cable.” Please confirm acceptability of Type MC Cable as “specified otherwise” in Paragraph 3.1.3.2.

Response: The use of MC cable is acceptable and shall be installed in accordance with code and the project specifications.

52. Specifications include no reference for wiring method for low voltage cabling for low voltage lighting control. Please confirm that this cable should be run in open-top or closed-ring supports as described in Section26 20 00-2.5 for telecommunications cabling supports.

Response: Closed ring supports shall be utilized for the lighting control system wiring.

53. Drawing S111 does not identify sizes or types of interior footings. We typically see a “Footing Schedule” within the structural drawings but could not locate. Please provide.

Response: Footing sizes are indicated in column schedule. Please see column schedules on drawing S-401 and S-402.

54. Spec Section 08 71 00 Page 28 states to see following pages for Hardware Sets. We could not locate any Hardware Sets within the specifications. Please provide.

Response: See Amendment 0004

55. We’ve been asked by numerous flooring subcontractors if there are any provisions for Moisture Mitigation of concrete slabs? Please advise.

Response: Tests are required per the Specifications prior to flooring installation for moisture, alkalinity and bond.

56. Solicitation synopsis indicates the contractor is to include an independent commissioning agent for the project construction in his proposal. Is this correct? Is there an independent commissioning agent provided by the design team or Owner under a separate contract that would negate the need for the contractor to provide a commissioning agent?

Response: See response to RFI #3 in Amendment 0004.

57. We are sending this Request For Information regarding the Electric Hand Dryers. Item #

2.2.14 of Specification Section 10 28 13. Do the electric hand dryers need to be ADA compliant?

Response: Yes

58. There are currently no hardware sets listed in the door hardware specifications. Will the architect be suppling hardware sets.

Response: See Amendment 0004

59. Door type 22 is a Pondarosa Pine stile and rail full glass door, are these doors to be painted, if so can there be a wood substitute.

Response: Refer to Sheet I-001 Note: 16 for painting requirement. Provide doors as specified.

60. For detail 2/S-401 at shear key, please verify footings on lines x2 & PC.4 require no couplers.

Response: All top bars in footings with shear lugs shall be continuous and hooked at each end per 2/S-401. When top bars in footings with shear lugs are spliced, mechanical couplers are required to achieve the continuity. The location of all splices, if any, are at the discretion of the contractor.

61. For detail 2/S-401 at shear key, please verify footings on lines P4, PP, P13 and PJ require 2 sets of 2 couplers each to be used between the shear keys in the long direction.

Response: All top bars in footings with shear lugs shall be continuous and hooked at each end per 2/S-401. When top bars in footings with shear lugs are spliced, mechanical couplers are required to achieve the continuity. The location of all splices, if any, are at the discretion of the contractor.

62. For detail 2/S-401 at shear key, please verify "L" shaped footing @ lines PU/P15 requires 2 sets of 2 couplers on line PU, and 2 sets of 3 couplers on line P15, located approximately @ PU- P14, PU-P15 (east-west), PUV-P15 (North-south) & PX-P15.

Response: All top bars in footings with shear lugs shall be continuous and hooked at each end per 2/S-401. When top bars in footings with shear lugs are spliced, mechanical couplers are required to achieve the continuity. The location of all splices, if any, are at the discretion of the contractor.

63. Page 2 of Specification section 12 66 00 for Telescopic Stands and Seating (Bid Option #1) shows the length of the telescopic bleachers to be 43’-6” in length. On page A-941 of the drawings, there is a dimension indicating that the wall behind the bleachers is 43’-6” in length, however the actual bleacher depicted is only 40’ in length. Please clarify what dimension should be used for the bleachers.

Response: Drawing A-941 indicates wall to wall dimension at 43’-6. Bleacher width shall be 40’-0.

64. Please clarify the specific standoff distance and explosive weight charge required for applicable glazing and framing systems.

Response: Refer to drawing CX-101 AT/FP Compliance Plan for standoff distance and drawing S-001 Antiterrorism and Force Protection loads-Blast Design.

65. Page L-203 of drawings shows an item on the decorative scored concrete paving north of play structure #2. Please clarify item description and whether it is to be provided additional or relocated from the temporary school.

Response: This is a relocated ADA accessible table from the temporary school that was not labeled. There are (2) ADA accessible tables and (1) 4-Seat Table on sheet L-200. L-202 has (1) ADA accessible table and (1) 4-Seat table. This is the other ADA accessible table from sheet L-200.

66. Please clarify Optional bid item #13 – Classroom millwork (option #12). Please identify which rooms are classrooms. Is Pre-K Hub 1D00, Kinder Hub 1E00, TCollab 1E06, Hub 2G00, Flex 2G01, Hub 2I00 and Hub 2J00 considered classrooms?

Response: The Classroom Millwork (Option #12) locations are identified in plan on Sheet A943 and are highlighted areas at the perimeter windows. See Detail 8/A-943 and Elevation 3/A-943.

67. Spec section 06 20 00 paragraph 2.8.2 states counters unit shall be post formed, Spec section 06 41 16 paragraph 2.6 states counter edging shell be Tee-Molding. Please advise

Response: All counters are solid surface or a phenolic resin material and should be as shown on Sheet A-653, detail 9/A-653 for ½”th solid surface and detail 10/A-653 for 1”th Phenolic Resin Counters. Detail 1/A-653 is for the bracket supported counter and has an atypical solid surface edge to conceal the bracket.

68. Spec section 06 41 16 paragraph 2.4 states all semi exposed surfaces to be melamine, paragraph 2.11.6.1 states semi exposed surfaces to be HPDL grade VGS. Spec section 06 41 16 paragraph 2.11.5.1 states shelves to be MDF with HPDL. Please advise.

Response: Interior finish on all semi-exposed surfaces shall be melamine and to meet the grade of their application, whether horizontal or vertical. At Cabinets without doors the interior finish and shelves are to match the exterior plam in finish and grade HPDL- General Purpose (HGS) for horizontal and vertical durability.

69. Spec section 06 20 00 paragraph 2.8.5.2 states Plam cabinets to be flush overlay, Spec section 06 41 16 paragraph 2.11.1.1.2 states Face frame. Please advise

Response: Provide flush overlay doors as detailed in drawing set, unless noted otherwise.

70. We supply all the equipment for the fire alarms over at Hanscom Air Force Base and we have supplied them with the fire alarm and MNS combination devices in many buildings on the base but always on the wall. I have made many phone calls since receiving the drawings for the Primary School and I have come to the conclusion that they do not make a ceiling mount Fire alarm and MNS combination device. Our only option it appears is to make these devices a combination Fire alarm/MNS wall mount device or keep them on the ceiling but they will have to be 2 completely separate devices mounted side by side on the ceiling. Please advise how you would like us to proceed.

Response: Two adjacent devices on the ceiling are what is anticipated.

71. In Section 08 71 00 page 28 section 3.8.B it says to see the following pages for the Hardware Sets. Where can we find the Door Hardware schedule?

Response: See Amendment 0004

72. Please provide quantity of WT3 Blackout Shades. Dwg. I-002 indicates they are required at room 1Co1 but none are identified.

Response: On the Finish Schedule, WT3 is noted for application in the Gymnasium and Commons only. On the Finish Location Plan I-110, refer to Keynote 3 for the Commons which describes that these shades are to be located at each monitor above and for the Gymnasium it is identified on the plan which walls are to get them. The quantities would coincide with the reflected ceiling plans and elevations for the spaces identified to have this product. They should be sized for each opening.

73. Please have the Civil Engineer provide the thickness for asphalt walkways.

Response: 2” asphalt surface course with 4” graded aggregate base.

74. For low voltage lighting cabling, please confirm that this cable should be run in open-top or closed-ring supports as described in Section 26 20 00-2.5 for telecommunications cabling supports.

Response: Closed ring supports shall be utilized for the lighting control system wiring.

75. In review of section 072113 for the underslab insulation requirements it’s unclear which material is called out. We assume par. 2.1B 1. Masonry Insulation is the material required for the underslab and foundation insulation.

Response: See detail 8/A-501 and Spec Section 07 21 13, Para. 2.1.B for underslab insulation.

76. Does a paved or some other type of walkway exist now? If not are we to provide a concrete walk the distance? (Sketch on A-922 may indicate).

Response: See Sheets L-200 and L-305 for extent of existing walkways and new walkways required.

77. What are the Blast Requirements for this project?

Response: Refer to drawing CX-101 AT/FP Compliance Plan for standoff distance and drawing S-001 Antiterrorism and Force Protection loads-Blast Design.

78. Need Standoff Distance and Explosive Weight Charge

Response: Refer to drawing CX-101 AT/FP Compliance Plan for standoff distance and drawing S-001 Antiterrorism and Force Protection loads-Blast Design.

(End of Summary of Changes)