RFIs.pdf

Requests for Information Solicitation 12505B21R0008 NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 1: Can EFCO be considered as an approved manufacturer for the Aluminum Curtain Walls and Aluminum Windows? EFCO is in the specs as approved for the Aluminum Storefront portion.

Answer 1: EFCO shall be considered an approved manufacturer for the Aluminum Curtain Walls and Aluminum Windows. The substitution request will be processed in accordance with the Post-Contract (Construction Period) Substitutions process outlined in Specification Section 08 44 13, pages 3 and 4, paragraph 2.1 C and D.

Question 2: Can we have a list of pre-bid attendees or copy of the sign-in sheet?

Answer 2: Site visit sign-in sheets were provided with solicitation amendment 01.

Question 3: Please advise if window details from the original building, from the south wing addition and from the modernization projects can be made available.

Answer 3: Reference attached window details.

The attachement contains photographs of window details from original 1966 construction of South Wing; scans of drawings from 1983 Window Replacement project; and 1984 South Wing Window Repair project.

The photographs of “South Wing Window Details” show the existing installation of the stone panels.

For the proposal, Contractor shall assume the installation of stone panels as shown in “South Wing Window Details” is typical for all of Building 1.

Question 4: Please provide more information on how the stone panels to be re-installed are currently anchored and the typical depth (thickness) of the stone, and what is the composition (type of stone). It is essential to have more stone panel information if we’re planning on cutting them down to fit into new window frames.

Answer 4: The existing stone panel shall be removed/salvaged and reinstalled at the same places. Existing drawings on the NCAUR facility indicate the stone panels as 7/8” thick serpentine panels, see answer #3 for additional information on the stone panels.

The new Detail is being prepared and will be incorporated as part of the Award documents.

Question 5: Please clarify glazing specification. There is a mention of matching existing glass, of which there are at least 3 different types. Shall the typical glass be tinted?

Reflective?

Answer 5: For the proposal, the new glazing furnished shall be reflective.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 6: Is there a priority of phases or are they numbered in their priority?

Answer 6: The number one priority is the Base Bid (Phases 1 and 7). The remaining phases are all of equal priority.

Question 7: Is there any existing ACMs (asbestos) in the existing windows, window caulking, etc.?

Answer 7: Contrractor shall assume that vermiculite insulation is only present in South Administrative Wing and South Wing (i.e. 1966 construction). USDA has tested this vermiculite, the test results indicated the vermiculite does have asbestos but at a level below the regulated level. USDA does not have any records indicating if the windows and associated caulking have asbestos containing material.

For the proposal, Contractors shall assume the asbestos is not present at the windows and associated caulking.

Contractors shall include in their proposal the sampling and testing of fifteen

(15) locations at windows and associated caulking for asbestos containing materials.

This sampling and testing shall occur prior to disturbing the windows. Test results shall be submitted to the USDA for review and record

Question 8: Can the sill flashing be matching finish aluminum in lieu of stainless steel? A couple of the window manufacturers are wanting to provide an alternate design (subsill with aluminum flashing).

Answer 8: Submit proposal for stainless steel flashing as specified. Variations will be addressed per Specification Section 01 33 00, page 7, paragraph 1.8.

Question 9: Is there anything underground prohibiting access to building exterior with boom lift equipment?

Answer 9: For the proposal, Contractors shall assume underground utilities and installations at the NCAUR facility will not prohibit use of boom lift equipment.

However, the facility does have multiple underground utilities and installations.

The Contractor shall review the location of these utilities and installations with USDA as part of their mobilization efforts.

Question 10: Windows at Phase 4 and 5 have been replaced in the past. Please confirm they are scheduled to be replaced.

Answer 10: Confirmed.

To provide context, a portion of the windows in Phase 4 and 5 were replaced approximately ten (10) years ago. However, they are scheduled for replacement in this project.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 11: Almost everything existing is Quaker bronze or dark bronze finish. The specs call for clear anodized. If all phases are not accepted, there will be a drastic difference between the existing window finish and the newly replaced windows. Can you confirm clear anodized finish?

Answer 11: To comply with the State Historic Preservation Office request, clear anodized finish is required on the east and north elevations (i.e. Phases 1 and 2). To help provide uniformity, clear anodized finish was selected for all Phases.

Question 12: Are all windows to be fixed (non-operable)?

Answer 12: Yes

Question 13: Are we sure we want the exterior sill flashing to extend under the window system all the way to the interior? Can we furnish a sub-sill and have the sill flashing terminate under the sub-sill?

Answer 13: Contractor shall submit proposal in accordance with the contract documents (i.e.

drawings, specifications). Variations will be addressed per Specification Section 01 33 00, page 7, paragraph 1.8.

Question 14: It appears these windows will need to be installed from the exterior. The details do not show head and jamb receptor, but perimeter receptor and subsill are somewhat required for the exterior installation.

Answer 14: The Government will facilitate access from the interior and exterior, as requested by the Contractor.

Question 15: Can this be acknowledged by addendum to ensure all bids are on the same level of value?

Answer 15: The questions and answers are incorporated as an Addendum to the Solicitation.

Question 16: Will poured and de-bridged thermal breaks be acceptable? The specifications state “Each window must be anchored at each side of the thermal break, such that fracture of the thermal break will not result in loss of attachment of window”.

This would not be achievable without receptor.

Answer 16: Yes, poured and de-bridged thermal breaks are acceptable.

Question 17: You will get the exact same Class 1 anodized finish whether the warranty is for 5 years or 15 years per the specifications. You could save some cost by asking for 5 year warranty on the finish. The finisher will warranty the finish for 5 years and the manufacturer will have to add to the price to cover the additional 10 years, while the owner gets the same finish regardless. As long as you require Class 1 anodized (equivalent to 215R1) you’ll get the same finish regardless. Do you want to change to 5 years?

Answer 17: Reference specification section 08 51 13 paragraph 1.8.A.2.c.

For the proposal, Conractor shall revise paragraph, warranty on metal finish shall be 10 years.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

The revised Specification Section is being prepared and will be incorporated as part of the Award documents

Question 18: Window types AA, BB, CC, DD require 0.060” PVB interlayer at laminated glass units due to size. Can this be added by addendum?

Answer 18: For the proposal, Contractor shall revise Drawings and Specifications to indicate that a 0.060” PVB interlayer shall be provided at laminated glass for Window Types AA, BB, CC, DD.

The Drawings and Specification Sections are being prepared and will be incorporated as part of the Award documents.

Question 19: Please confirm laminated glass is not required at the spandrel glass in the upper portion of window types A, B, F, G, N, Q, S, U, X.

Answer 19: Confirmed. Laminated glass is not required at the spandrel glass in the upper portion of window types A, B, F, G, N, Q, S, U, X.

Question 20: Phase 1: Please indicate the quantities for the repair Notes 9 & 11 (work as described on Sheet A.P1.11). Also for Note 11 please confirm that ceiling is drywall.

Answer 20: Regarding Note 11, the ceiling is exposed concrete ceiling with paint finish, not dry wall. The Drawing revision to Notes 9 and 11 is being prepared and will be incorporated as part of the Award documents.

For the proposal, Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Room 0015

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 21: Phase 1: Please confirm the quantity to modify ACT ceiling as required, 102 lf is for new window installation, head detail 25/A.P1.43

Answer 21: For the proposal, account for 102lf. Width shall be as described in drawing sheet Notes 9 and 11.

Question 22: Phase 1: For Note 10 as described on Sheet A.P1.11 – does this work for phase 1 correspond to quantity for “repair crack or spall on ceiling above doors, 2 loc” or does it refer to “repair crack or spall on ceiling & repaint, 104 lf”. Assuming the location for these two quantities is provided, can a square footage quantity be provided as well?

Answer 22: The Note 10 is only for room 0006. Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 23: Phase 1: The quantities indicate to include 47 sf of louver remove/reinstallation. It doesn’t seem that any louvers are designated on the drawings for removal/reinstallation. Please clarify.

Answer 23: Correct. Existing louvers to remain.

Question 24: Phase 2: For Window Type N, please clarify the head and sill types. The window schedule indicates three different head/sill details but the quantity of each type can not be determined from the elevations. Please provide additional information on elevations.

Answer 24: The three different head/sill details were developed according to interior conditions. Assume everything is NH-1 unless called out differently.

Question 25: Phase 2: Quantity of 2,640sf included to “remove damaged paint & mold then repaint to match exist 3 floors. Work note 14. Can you clarify what the substrate is for this area? (i.e. drywall, cmu, concrete)

Answer 25: Room 3244, 3240, 3236, and 3232 – CMU Wall/ Brick Wall/Concrete beam

Question 26: Phase 2: Quantity of 3,840 to “Repair damaged brick wall with paint to match exist 3 floors”. Work Note 12. Please indicate where this work is located/called out on the drawings.

Answer 26: Room # 1239, Not the 3rd floor.

Question 27: Phase 3: Sheet A.P3.31 – Please clarify window head and sill details. Some sections are called out but the majority are not. Window schedule indicates sill/head detail for each window type but a quantity is not provided and Window Types B and S have varying sill and head details.

Answer 27: The 2nd and 3rd floor has head detail 51/A.P3.43. Refer to DWG A.P3.31 for the 1st and ground floor.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 28: Phase 3: The window schedule indicates Type A and Q windows are included in Phase 3. No Type A or Q windows shown on elevations. Please clarify.

Answer 28: Window types A and Q are shown on Elevation 41/A. P3.35 West Elevation - Phase 3 Area D - New Work

Question 29: Phase 6: Please clarify head detail for Window Type E. Window Schedule of A.601 indicates type SH-1 or SH-3. There is no SH-1 detail on Sheet A.P6.43. Section 42/A.P6.41 indicates third floor type E windows have SH-3 head detail, second floor type E windows have SH-2 head detail and first floor type E windows have SH-2 head detail.

Answer 29: Detail 11/A.P6.43 should be SH-1. The Drawing Detail is being prepared and will be incorporated as part of the Award documents.

Question 30: Phase 6: Please clarify Section 42/A.P6.41 – it seems one floor is missing or else window shown with head detail 14 is shown incorrectly since head and sill details refer to basement. (also, sill detail for Phase 6, Type E window on window schedules only indicates a SS1 detail).

Answer 30: Detail 51/A.P6.43(SH-3) is for the 3rd floor. Detail 11/A.P6.43(SH-1) is for 1st and 2nd floor. Detail 14/A.P6.43(SH-2) is for the basement.

Question 31: Phase 6: Note 19 – Remove damaged paint and repaint to match existing color. Please indicate substrate.

Answer 31: Room # 2319A / 2311A– CMU wall shall be repainted. See attached below.

Room 2319A Room 2311A

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 32: Phase 6: Quantity list includes 413 sf to “remove & replace damaged painted plaster below windows”. (Assuming this is Interior Note 8). Please indicate where this work is located. Nothing could be found on the drawings.

Answer 32: Contractor shall include pricing in their proposal for 413 sf of “remove & replace damaged painted plaster below windows”. Keynote 8 is not shown in plans for phase 6, but the damaged plaster while installing the window sill shall be replaced or repaired.

Question 33: Phase 7: Please clarify section 41/A.P7.41 – it seems one floor is missing.

Answer 33: This is a partial wall section.

Question 34: Phase 7: Window Schedule on A.601 indicates SH-5 and SS-5 sill/head details for Window Type BB, it also indicates SH-5 head detail for Window Types CC and DD. These head and sill details are not on sheet A.P7.41 nor does this match section 41/A.P7.41

Answer 34: The Drawings are being prepared and will be incorporated as part of the Award documents. For the proposal, Contractor shall revise “Window Schedule” on A.601 to indicate:

“PH7: SH-4” for Window Type BB Head Detail “PH7: SS-4” for Window Type BB Sill Detail “PH7: SH-4” for Window Type CC Head Detail “PH7: SS-4” for Window Type DD Head Detail

Question 35: Phase 7: Please indicate where the 410 sf of “remove & replace damaged painted plaster below windows” is located.

Answer 35: Contractor shall include pricing in their proposal for 410 sf of “remove & replace damaged painted plaster below windows”. Keynote 8 is not shown in plans for phase 7, but the damaged plaster while installing the window sill shall be replaced or repaired.

Question 36: Phase 7: Note 19 – remove damaged paint and repaint to match existing color. Please indicate substrate.

Answer 36: CMU Wall

Question 37: Please confirm it is acceptable that only new gyp board that is installed for new window installation will be painted. Paint color to match existing adjacent drywall that remains as closely as possible.

Answer 37: It is acceptable that only new gyp board that is installed for new window installation will be painted. Paint color to match existing adjacent drywall that remains as close as possible.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 38: There is a quantity for each phase described as “paint concrete wall” – please confirm this correlates to painting the exterior concrete that extends from the basement to the first floor level for each phase. I could not find a note on the drawings that indicate the concrete exterior should be painted.

Answer 38: Correct. Please see General notes F in floor plans.

Question 39: For the same “paint concrete wall” indicated above, please confirm if this quantity also includes the interior painting that will be required for Work Note 24, repair crack or spall on concrete wall. Repaint the damaged area with paint finish to match existing color.

Answer 39: Confirmed.

Question 40: The quantity list for each phase typically includes two line items for “stainless steel sill pan” and then an additional line item to “remove & replace window sills”. Can you provide some more detail for each line item? (i.e. is the remove & replace window sills for the interior sill?) Why is there two line items for “stainless steel sill pan”?

Answer 40: Both line items are referring the removal of existing window sill along with furnishing and installation of new stainless steel pan. Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 41: What is the thickness of the Stone Panel? Subcontractor cannot verify this information without removing the window. Please provide.

Answer 41: See Answer #4.

Question 42: Is it possible to receive a time extension (2 weeks) due to the size of scope to allow the suppliers ample time to provide pricing once questions are answered?

Answer 42: The proposal due date has been extended to August 4, 2021.

Question 43: What is the design basis for the curtain walls with the 1-hour fire rating? Please provide.

Answer 43: For the proposal, new curtain wall systems shall not be fire rated. The Drawings and Specifications are being prepared to remove the reference to the 1-hour fire rating and will be incorporated as part of the Award documents.

Question 44: Per note 11 on G-003, we are to perform excessively noisy and disruptive work between 7:00pm and 7:30 am or on weekends. This project will have a large amount of masonry and concrete demolition, is this categorized as "excessively noisy and disruptive" and thus subject to these restrictions?

Answer 44: The Government intends for the work to be performed during normal business hours (7:00am to 3:30pm) Monday through Friday unless requested otherwise by the Contractor. The Government will coordinate the Contractor’s schedule with the building occupants to help ensure personnel are re-located to a less noisy and less disruptive environment.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 45: Per Section 010100 - General Requirements, paragraph 1.4, C - we cannot expose ARS staff to any noise above 75 decibels. The large amount of demolition work for brick and concrete removal will likely be above this threshold. Does this mean that work scope must be performed at night?

Answer 45: No. See answer #44.

Question 46: Has the existing vermiculite insulation been tested for asbestos?

Answer 46: See Answer #7.

Question 47: Does the vermiculite insulation only exist in the Phase 1 area? This is the only phase it is shown on the drawings.

Answer 47: Vermiculate insulation exists in Phases 1, 5, 6, and 7. See Answer #7 for additional information.

Question 48: What is the expectation or result for the contractor developed procedure of controlling the vermiculite insulation as noted on detail 44/A.P1.42? Is no new insulation to be placed behind the new brick as none is shown on drawings?

Answer 48: Contractor shall employ methods that will retain existing vermiculite as much as possible. Contractor shall capture / clean up any vermiculite that is released from the existing walls (i.e. vermiculite that cannot be retained during brick removal and performance of the work). Contractor shall legally dispose all vermiculite that is not retained in wall construction. Due to the unknown conditions that result from the loss of vermiculite, Contractors shall not include any re-insulating costs in their proposal.

Question 49: Are the quantities provided what the contractor pricing is based on? If there are variations, up or down, once work begins, how will bese be addressed since there are no unit prices provided on the bid form?

Answer 49: Yes. Contractor shall base pricing on the quantities provided. Differing site conditions will be addressed per FAR 52.236-2.

Question 50: In section 030100, 2.04, B, 1, Sika Ferrogard 903 is noted in the specifications. Is the migrating corrosion inhibitor required at the patches? If so is it prior to patching, after, or to be applied to the overall concrete area?

Answer 50: Contractor shall apply protective coating to existing re-inforcement as indicated in Section 03 01 00 and the Drawings. Penetrating corrision inhibitor shall be applied in accordance with the written recommendations of the manufacturer of the protective coating that is furnished.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 51: Please clarify if the contractor is to include the costs for testing for the following items detailed in Section 042000:

1. 1.04, C, 2 - Yes

2. Testing detailed in paragraph 1.06, G, 1-7 - Yes

3. 1.06, H – testing for cast stone - Yes

Answer 51: See responses above.

Question 52: Per Section 042000, 3.02, H, 2 - The existing mortar is to be removed by grinding a kerf down the middle of the joint and removing the remaining top and bottom by hand. It has been our experience this damages the masonry more than complete removal by grinder. If demonstrated in a mockup, is complete removal utilizing a grinder and diamond blade acceptable?

Answer 52: Yes. If demonstrated by mockup, complete removal utilizing a grinder and diamond blade is acceptable.

Question 53: In Section 04100, paragraph 3.4, the minimum depth of removal of mortar joint is 1/2". In Section 042000, paragraph 3.02, H, 3, it is 2.5 times the width of the joint, not less than 5/8". Please clarify which is correct.

Answer 53: Reference specification section 04100 paragraph 3.4, Contractor shall revise the paragraph to indicate minimum depth of 5/8”.

Question 54: Per typical work item Note 3, the exterior wythe of masonry is to be removed 3 courses above and below the shelf angle at non-window locations. However, in multiple locations, ie: 41/A.P1.23, at non-window locations the brick is not shown as being removed below the shelf angle nor is this quantity shown in the Quantities Section. Please clarify if the elevations, given quantities or plan description governs.

Answer 54: The intent is to provide removal of brick courses at non-window locations.

Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 55: Please clarify the difference between the Demo and New work plans. Some new work is shown on the demo plans that does not correspond with the same work shown on the new work plans.

Answer 55: Understood. Because the purpose of this project is renovation and repair, some new work is shown on the demo plans. Please coordinate the work items between new and demo plans.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 56: Detail 43/A.P1.42 Vertical Movement Joint Detail - states that "if calculations determine that more movement capability is required, remove surrounding brick masonry and reconstruct to the desired joint width". Would this work be a change order as it is not known at this time if it is required?

Answer 56: Contractor shall include pricing in their proposal for all quantities in “Quantities” document issued by USDA.

Question 57: On page 2 of the Quantities document, what detail is associated with the quantity of 131 lineal of stainless steel sill pan flashing?

Answer 57: The stainless sill pan flashing is associated with Detail 31/A.P1.43, 33/A.P1.43, and 35/A.P1.43. Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 58: On page 2 of the Quantities document, what detail is associated with the 515 sf of remove and reinstall 3 courses of brick?

Answer 58: Removal and reinstallation of brick courses is associated with Note 3 on A.P1.31, A.P1.32, A.P1.33, A.P1.34, A.P1.34, A.P1.35, and A.P1.36. Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 59: On page 2 of the Quantities document, what joint configuration is the 262 lineal feet of sealant for?

Answer 59: Sealant installation is associated with details on A.P1.42 and A.P1.43. Contractors shall base pricing on quantities indicated in “Quantities” document issued by

USDA.

Question 60: On page 2 of the Quantities document, what joint configuration is the 1,030 lineal feet of sealant for?

Answer 60: Sealant installation is associated with details on A.P1.42 and A.P1.43. Contractors shall base pricing on quantities indicated in “Quantities” document issued by

USDA.

Question 61: On page 2 of the Quantities document, what joint configuration is the 2,919 lineal feet of sealant for?

Answer 61: Sealant installation is associated with details on A.P1.42 and A.P1.43. Contractors shall base pricing on quantities indicated in “Quantities” document issued by

USDA.

Question 62: Work Item Note 4 on A.P1.12, typical of each phase, states to clean masonry with “soap and water, non-acidic cleaner or acidic cleaner followed by neutralizing as necessary” The costs difference between these three cleaning options is significant. Can one be identified as base bid and the others as alternates?

Answer 62: The Basis of Design shall be EaCo Chem NMD 80, or equal.

Solicitation 12505B21R0008 NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 63: What is the requirement for capturing of runoff water from building washing work?

Answer 63: There is no requirement to capture runoff water from building washing work.

Question 64: For repairing of concrete cracks, is the detail to be used require removing of the concrete and patching (51/A.P1.42) or is routing and caulking of the crack with sealant to be performed?

Answer 64: Concrete cracks and spalling that are identified with Note #6 on Phase 1 elevations shall be repaired as indicated in Detail 51/A.P1.42.

Question 65: For replacement of damaged relieving angle, please provide a detail or information on the size and thickness of the angle as well as the spacing and size of the anchors.

Answer 65: Contractor shall match size and thickness of existing angle. Contractor shall match the spacing and size of anchors. For the proposal, Contractors shall assume 6” x 6” x 3/8” angle with spacing and size of anchors in accordance with industry standards.

Question 66: For detail 22/A.P1.42 - removal and reinstallation of the existing steel relieving angle is required. What is the anchoring type and spacing for this angle? Will the existing anchors and holes be able to be reused or will new holes and anchors be required?

Answer 66: The reinstallation of the existing steel relieving angle is acceptable only if there no section loss. For the proposal, Contractors shall assume new 6” x 6” x 3/8” angle with spacing and size of anchors in accordance with industry standards.

Question 67: What detail/repair method is required for note 15 on A.P2.11 - Repair Crack on the Window Concrete Lintel?

Answer 67: Concrete cracks and spalling that are identified with Note #15 on the Phase 2 floor plans shall be repaired as indicated in Detail 21/A.P2.42.

Question 68: Is the flashing work between the brick and the foundation wall as shown on detail 44/A.P1.42 only to be performed in Phase 1 where there is a concrete repair at this location or is it a typical flashing requirement at the concrete to brick joint?

Answer 68: For the proposal, Contractor shall revise note #9 on Sheets A.P1.21 through A.P1.36; reference Detail 44 / A.P1.42 in lieu of Detail #21 and Detail #41. (i.e.

repairs indicated with Note #9 on Sheets A.P1.21 through A.P1.36 shall be in accordance with Detail #44 / A.P1.42).

The Drawings are being prepared and will be incorporated the revised Details as part of the Award documents.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 69: Please provide any existing drawings or details that provide any information related to the stone panels located between the windows (panels are existing at many of the building phases) – in particular existing installation method and back up materials behind the panels.

Answer 69: See answer #3.

Question 70: Please provide any existing information on window relieving angle sizes.

Answer 70: Contractor shall match size and thickness of existing angle. Contractor shall match the spacing and size of anchors. For the proposal, Contractors shall assume 6” x 6” x 3/8” angle with spacing and size of anchors in accordance with industry standards.

Question 71: In the curtainwall spec section 084413-6 letter I it’s calling for Impact resistance and large missile test and small missile test. The standard Kawneer curtainwall as mentioned earlier in the spec does not meet that criteria. Is standard curtainwall materials with glass that is either annealed or tempered ok to use as mentioned in the glazing spec 08800?

Answer 71: Reference specification section 08 44 13 paragraph 2.2.I. “Windborne Debris Impact Resistance”; Contractor shall delete this requirement. Glazing for curtainwall systems shall comply with Section 08 80 00 and 08 44 13 (see 08 44 13.2.4.A.).

Question 72: Specifications Pg. 47 - 1.6.1.2 Will a separate Superintendent, Quality Control and SSHO be required full time on site? In other words, are three (3) full time individuals required?

Answer 72: Three (3) individuals are required. However, all three individuals are not required to be on site full time. The only individual required to be on site full time is the Site Superintendent. The Quality Control and SSHO shall be on site, as require per the Contractor’s QC and Safety plans.

Question 73: Will FAR clause 52.211-18 be in effect for this solicitation?

Answer 73: No.

Question 74: RFP Pg. 5 B.2 & B.3 – Phase 1 and Phase 7 are considered base bid, all remaining phases are options. Does the 365 calendar day performance time reflect the duration for base bid? Please specify the performance time for options 1 through 6.

Answer 74: Yes. The 365 calendar days is intended to reflect the estimated time required to complete the Base Bid. The performance time for Options 1 through 6 is estimated at 270 calendar days each.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 75: Is the thickness of the granite panels to be removed and reset as part of the window work known? Are there any as-built details of the granite panel installation?

Answer 75: See Answer #3 and #4.

Question 76: Based upon the site visit there are multiple locations where drywall/plaster/act ceiling tiles will need to be repaired and replaced. Will infection control OR dust control be required during interior repairs?

Answer 76: Yes, dust control will be required during interior repairs.

Question 77: Will office spaces require the same level of infection control as laboratory areas?

Answer 77: The same level of dust control will be required. Infection control is not required.

Question 78: If infection control is required what level of ICRA standards will be required?

Answer 78: Infection control is not required.

Question 79: Who will be responsible to remove and reset the furniture for all interior spaces?

Answer 79: USDA will be responsible for removing and resetting the Furniture, Fixtures and

Equipment. The USDA intends to move the FFE four (4) feet away from the exterior walls unless further distance is requested by the Contractor.

Question 80: Quantities provided include SF of plaster/drywall repairs. Please specify how many office/lab locations will need repairs. The plans provide a room number but it is unknow whether that room is an office or a laboratory.

Answer 80: Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 81: Please confirm the PPQ form that was provided with the solicitation documents is the correct form.

Answer 81: Confirmed.

Question 82: Please confirm the PPQ form is to be filled out by the contractor, sent to the COR of the project listed and the COR is to fill out the second page and forward it directly to josh.dobereiner@usda.gov.

Answer 82: Confirmed.

Question 83: Please advise if window details from the original building, from the south wing addition and from the modernization projects can be made available.

Answer 83: See answer #3

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 84: Please provide more information on how the stone panels to be re-installed are currently anchored and the typical depth (thickness) of the stone, and what is the composition (type of stone). It is essential to have more stone panel information if we’re planning on cutting them down to fit into new window frames.

Answer 84: See answer #4

Question 85: Please clarify glazing specification. There is a mention of matching existing glass, of which there are at least 3 different types. Shall the typical glass be tinted?

Reflective?

Answer 85: See answer #5

Question 86: Is there a priority of phases or are they numbered in their priority?

Answer 86: See answer #6

Question 87: Is there any existing ACMs (asbestos) in the existing windows, window caulking, etc.?

Answer 87: See answer #7

Question 88: Can the sill flashing be matching finish aluminum in lieu of stainless steel? A couple of the window manufacturers are wanting to provide an alternate design (subsill with aluminum flashing).

Answer 88: See answer #8

Question 89: Is there anything underground prohibiting access to building exterior with boom lift equipment?

Answer 89: See answer #9

Question 90: Windows at Phase 4 and 5 have been replaced in the past. Please confirm they are scheduled to be replaced.

Answer 90: See answer #10

Question 91: Almost everything existing is Quaker bronze or dark bronze finish. The specs call for clear anodized. If all phases are not accepted, there will be a drastic difference between the existing window finish and the newly replaced windows. Can you confirm clear anodized finish?

Answer 91: See answer #11

Question 92: Are all windows to be fixed (non-operable)?

Answer 92: See answer #12

Question 93: Are we sure we want the exterior sill flashing to extend under the window system all the way to the interior? Can we furnish a sub-sill and have the sill flashing terminate under the sub-sill?

Answer 93: See answer #13

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 94: It appears these windows will need to be installed from the exterior. The details do not show head and jamb receptor, but perimeter receptor and subsill are somewhat required for the exterior installation.

Answer 94: See answer #14

Question 95: Can this be acknowledged by addendum to ensure all bids are on the same level of value?

Answer 95: See answer #15

Question 96: Will poured and de-bridged thermal breaks be acceptable? The specifications state “Each window must be anchored at each side of the thermal break, such that fracture of the thermal break will not result in loss of attachment of window”.

This would not be achievable without receptor.

Answer 96: See answer #16

Question 97: You will get the exact same Class 1 anodized finish whether the warranty is for 5 years or 15 years per the specifications. You could save some cost by asking for 5 year warranty on the finish. The finisher will warranty the finish for 5 years and the manufacturer will have to add to the price to cover the additional 10 years, while the owner gets the same finish regardless. As long as you require Class 1 anodized (equivalent to 215R1) you’ll get the same finish regardless. Do you want to change to 5 years?

Answer 97: See answer #17

Question 98: Window types AA, BB, CC, DD require 0.060” PVB interlayer at laminated glass units due to size. Can this be added by addendum?

Answer 98: See answer #18

Question 99: Please confirm laminated glass is not required at the spandrel glass in the upper portion of window types A, B, F, G, N, Q, S, U, X

Answer 99: See answer #19

Question 100: Detail 23/A.P1.43. Has the vermiculite in the wall been tested for hazardous materials? This material will fall out when the brick is opened up. Please clarify if the material needs replaced once it falls out.

Answer 100: See answer #7.

Question 101: 04 20 00-1 notes that mortar testing is excluded from the scope. 04-2000-4 notes lab testing is required. Please clarify.

Answer 101: The lab testing is required per spec 042000 - 1.04 C. Preconstruction Testing.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 102: 07 62 00-3 3.2.A.1 notes all flashing to be set in mastic and says to solder all seams and provide end dams. Are we to solder every joint in the flashing at the laps, or just looking for soldered end dams. Please clarify.

Answer 102: Every joint in the flashing at the laps shall be soldered.

Question 103: Note #11 on G-003 calls for noisy work to be done off hours. Please clarify if we can remove brick and grind during normal business hours, of if we need to figure off hours.

Answer 103: See answer #44.

Question 104: Detail 41/A.P1.43 shows stone panels to be removed and reset between the windows. What is behind the stone panels? Will the area need waterproofed once the stone is removed?

Answer 104: For the proposal, Contractors shall assume concrete columns are located behind stone panels. Contractor shall include pricing in their proposal the waterproofing of the exposed area of the concrete columns after removal of the stone panels.

Question 105: Detail 44/AP1.42 (and other details) calls for tin-zinc coated copper. Can stainless steel be utilized instead?

Answer 105: Submit proposal for flashing as specified. Variations will be addressed per Specification Section 01 33 00, page 7, paragraph 1.8.

Question 106: Detail 22/Ap1.42 calls to remove 3 courses of brick below the steel shelf angle. Is this required everywhere that has brick below the shelf angles?

Answer 106: Detail 22/A.P1.42 is the “Horizontal Movement Joint Detail” and shall be performed at locations indicated on the Drawings or indicated in the specifications.

Question 107: If new shelf angles are required, what size should be included?

Answer 107: Contractor shall match size and thickness of existing angle. Contractor shall match the spacing and size of anchors. For the proposal, Contractors shall assume 6” x 6” x 3/8” angle with spacing and size of anchors in accordance with industry standards.

Question 108: Are we to bid the quantities provided or bid from our independent take-offs? I have done a take-off on the masonry scope and the quantities per work item don’t seem to match up, with the take-off quantities being generally higher than the quantities provided.

Answer 108: Contractor shall base pricing on the quantities provided. Differing site conditions will be addressed per FAR 52.236-2.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 109: It is my understanding that the government will have 120 days from contract start date to authorize any options. Can you clarify if there will be additional time added to the contract for each option that is accepted?

Answer 109: See answer #74.

Question 110: Please confirm that the General Contractor is required to have an on-site superintendent, SSHO, and QC manager at all times that work is occurring.

Answer 110: See answer #72.

Question 111: Please confirm that the Superintendent, SSHO, and QC manager shall be (3) different people.

Answer 111: See answer #72.

Question 112: Please confirm that the Aluminum Entrances are to be painted - specifications call out clear-anodized aluminum storefront, while the high-performance coating specification does not include application over anodized aluminum substrates.

Answer 112: Aluminum Entrances should be clear anodized aluminum finish. Not required to be painted.

Question 113: Exterior Elevations work item 9 spall repair states that details 21 and 41 on sheet A-P(phase#)-43. Is this a typo? Detail 44 on sheet A-P(phase#)-42 seems to be the appropriate detail, please clarify.

Answer 113: Correct. It is a typo. Detail 41/A.P1.42 should be 44/A.P1.42 for item 9.

Question 114: Demo Elevations work item 19/New work Elevations work item 10: Since there is no way to know if the embedded steel is corroded until after the exterior wythe is removed, will an allowance or quantity be provided to base our bid on?

Answer 114: Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 115: In the Quantities document, the item description for relieving angle repair states “reinstall salvaged brick at relieving angle”. Due to the expense of salvaging brick and the breakage that occurs during that process, can new brick be utilized in lieu of salvaged brick?

Answer 115: Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 116: If salvaged brick is required as detailed above, a large percentage will break and become unusable that cannot be avoided. Is replacement brick acceptable when this occurs?

Answer 116: Yes

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 117: What paint type is to be utilized for the relieving angle after it is cleaned?

Answer 117: Basis of design for coating(s) on steel is Sherwin Williams Kem Kromik

Universal Metal Primer (minimum of one coat) and Shrewin Williams Industrial Enamel (minimum of two coats).

Question 118: Detail 22/AP.P1.42 at the brick shelf angle in phase 1 and its subsequent phases requires removal of the existing angle and reinstallation if found to have no section loss. Is removal and inspection required of the other relieving angle locations above windows also? Those details do not state to remove the angle.

Answer 118: Contractor shall provide removal and inspection of the other relieving angle locations above windows. Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 119: The vermiculite insulation is shown in the cavity in phases 1, 5, 6 and 7 but not in 2, 3 or 4. Please confirm there is no vermiculite insulation in these areas.

Answer 119: See answer #7.

Question 120: Please differentiate the quantities in each phase for the brick repairs above the windows (lintels) and at the shelf angles as these details require different amounts of brick removal and replacement. It appears that these quantities are combined in many of the quantities given in the phase breakdown. For example, in phase 6 the quantity given in the Quantities document for work at the relieving angle (which states removal of 3 courses of brick) is 776 lf/sf. However, there are much fewer lineal feet of window lintel work (3 removal courses) as compared to shelf angle work (6 removal courses) shown on the drawings for this phase.

Answer 120: Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 121: In general, can detail references be given to the descriptions in the Quantities document? We cannot match up the required work quantity to a detail in some instances.

Answer 121: Contractors shall base pricing on quantities indicated in “Quantities” document issued by USDA.

Question 122: In the Solicitation, Section B.2, Schedule of Items, seven breakdown prices are required. Are Items 1 and 2 to be considered Base Bid with Items 3-7 to be add alternates? Will additional time of completion be given if Items 3-7 are awarded?

Answer 122: See Answer #74.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 123: In details 43/A.P3.43 and 41/A.P4.43, it states that the 5’ x 5” angle is to be “faceted in existing condition to accommodate curve”. Please provide an additional detail or information explaining further what is required here and what type/size of anchors are to be used into the existing metal tube.

Answer 123: Contractor shall determine the size and material of anchorage to comply with applicable construction industry standards to provide secure connection.

Reference Detail 41/A.P4.43, Contractor shall revise detail to indicate 6” x 6” angle in lieu of 5” x 5” angle to match existing angle sizes.

Question 124: In details 45/A.P3.43 and 43/A.P4.43 is the 4” by 4” angle supporting the glass block to be faceted as well?

Answer 124: Detail 45/A. P3.43 is correct.

Reference Detail 43/A.P4.43, Contractor shall revise detail to indicate 6” x 6” angle in lieu of 4” x 4” angle to match existing angle sizes.

Question 125: What type and size of anchors are to be utilized for the 4” x 4” angle shown in details 45/A.P3.43 and 43/A.P4.43?

Answer 125: Contractor shall determine the size and material of anchorage to comply with applicable construction industry standards to provide secure connection.

Question 126: Work Item 4 on the New Work series drawings requires sandblasting to remove stains. Many of these areas are masonry. Is water blasting acceptable as a means of cleaning as sandblasting will likely damage the brick?

Answer 126: Water blasting will be considered as an acceptable means. However, please see answer to #62 for further clarification on cleaning.

Question 127: Is there any work to be performed above the 3rd floor at the penthouses or setback roof areas?

Answer 127: No, the penthouses are out of the scope.

Question 128: In detail 42/A.P4.21 and 42/A.P4.31on the demo drawings the existing glass block is not shown as being removed, however in the new work drawings on 41/A.P4.31 and 41/A.P4.32 the block is shown as being new. Please clarify if this block is to be replaced.

Answer 128: Yes, the glass block shall be replaced.

Question 129: For Phase 4 Glass Block replacement, the quantity shown on the drawings is significantly more than the quantity amount given in the Quantities document.

Please verify which is correct.

Answer 129: See Answer #49.

NCAUR Exterior Building Repairs – Peoria, IL July 19, 2021

Question 130: Please provide a supplier or manufacturer for the tin zinc coated copper flashing.

Answer 130: Contractor shall submit proposal in accordance with the contract documents (i.e.

drawings, specifications).