Amendment 04 RFIs.pdf

Offers 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 or (c) By separate letter or electronic communication 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

R10A. MODIFICATION OF CONTRACT/ORDER NUMBE

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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)

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.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

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

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

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16C. DATE SIGNED

SOLICITATION NO. 47PF0020R0012

PROJECT TITLE: EPDM Roof Replacement

GOVERNMENT PRE AWARD INQUIRY FORM

Looking at this bid I see the manufacturers listed but want to know if there is time to submit for MuleHide as a manufacturer. MuleHide meets all specifications and is in fact made from the same materials and supplier as

Carlisle. Is there a form I need and I can send the required specifications?

GSA will accept brand name equal but it must meet all product specifications listed. If the products do not meet specifications, they will be rejected. If you are submitting a proposal on this RFP, it is assumed that you will provide materials that meet the specifications.

4/2/20

We were reading the technical qualifications for this project and were curious if a subcontractor's past performance and relevant experience were acceptable on behalf of the prime contractor?

No, the RFP states that the experience and past performance must come from the offeror.

4/20/20

The period of performance is 120 calendar days; all work shall be fully completed in calendar year 2021. When is the project expected to start? If the work starts several months from now, how are we supposed to account for any unforeseen condition like increase in material costs?

The expected start for this project is spring of 2021. The government will not make any recommendations on how the offeror should price their proposal.

4/20/20

4 Is there a wage scale on this project? Yes, it is at the end of the RFP 47PF0020R0012 document. 4/20/20

075323, 2.4A – Polyiso looks to be class 4 which is a high density board

(Prox. 80 PSI). This is only available in 1” thickness… The plans and specs call for 2” of polyiso, so are we supposed to use 2 layers of the HD Iso to create the 2” depth specified, or use a standard 2” Iso (20 PSI) with the 1”

HD board on top? Please clarify.

One layer of 2" thick standard density polyisocyanurate board is acceptable.

5/11/2020

DTL6/A500 calls for extruded polystyrene insulation and not polyiso. Can you please clarify.

The reference to extruded polystyrene on detail 6/A500 should be revised to polyisocyanurate.

5/11/2020

DTL3/A501 calls for 2 layers of 1” extruded polystyrene insulation at the drains & field of the roof. Please clarify.

The reference to extruded polystyrene on detail 3/A501 should be revised to polyisocyanurate.

5/11/2020

DTL2/A501 calls for ½” coverboard. The specifications call for ¼” dens deck. Please clarify.

1/4" dens deck coverboard is acceptable. 5/11/2020

075323, 3.2B – Acoustical deck batten insulation in deck flutes. It appears the existing roof deck is 2” tongue & groove wood. Please clarify.

Paragraph 075323, 3.2B can be eliminated. 5/11/2020

075323 2.2A calls for reinforced 60mil EPDM, but references standard

60mil EPDM elsewhere. Please confirm.

Use 60 mil reinforced EPDM typical 5/11/2020

DTL4/A501 – Vapor Barrier. What type of vapor barrier is required (if any) and what is the desired attachment method?

The reference to vapor barrier should be revised to insulation adhesive. See 07 53 23-2.5.B 5/11/2020

DTL3/A500 – Shows a metal flashing (of sorts) being installed beneath the copper roof panels. The plans and specs specifically call for the copper panels to not be disturbed in any way. Please clarify.

The flashing slips underneath the copper panels without removing them.

5/11/2020

“Sally Port Roof” area shows indications of slope to a drainage scupper but does not show or specifically call for tapered insulation. Please clarify.

Provide tapered insulation to slope to the scupper 5/11/2020

Question

No.

QUESTION GOVERNMENT RESPONSE

Response

Date

Decemeber 2016 SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

GOVERNMENT PRE AWARD INQUIRY FORM

Is a stair tower going to be required to access the roof at the indicated staging area?

Prime contractors are responsible for determining responsibilities of the work as long as it is completed within the specifications of the project.

5/11/2020

What trade/contractor will be responsible for “patching” the existing copper roof as indicated on the drawings?

Prime contractors are responsible for determining responsibilities of the work as long as it is completed within the specifications of the project.

5/11/2020

Please confirm which contractor will be responsible for obtaining the roofing permit.

Permits are not required.

5/11/2020

Sheet A100 – Is the roofing contractor to remove and replace the sealant where the louvers meet the copper roof panels?

Yes 5/11/2020

Sheet A101 – Which trade/contractor will be responsible for repairing the tongue & groove wood roof deck, as well as providing the cross bracing near the drains?

Prime contractors are responsible for determining responsibilities of the work as long as it is completed within the specifications of the project.

5/11/2020

Which trade/contractor will be responsible for disassembling & assembling the various stair systems and metal landings on the roof(s)?

Prime contractors is responsible for determining responsibilities of the work as long as it is completed within the specifications of the project.

5/11/2020

DTL8/A500 – What kind of sequencing will be required for the cable clamp system shown as it is noted that the system needs to be flashed into the roof?

Sequencing is at the discretion of the contractor to perform the scope of work indicated. 5/11/2020

Sheet A500 from the original RFP Drawings Package was not included in

Amendment 01 Drawings Package, although it is listed in the sheet index.

Was A500 meant to be included in the updated drawings, or was that page removed intentionally?

A500 is supposed to be included in the bid package.It is included in Amendment 03.

5/11/2020

The copper counter flashing nailed to the building's parapet needs to be removed to install new EPDM roofing and term bar underneath the drip edge along the perimeter of the roof. Please clarify as to whether or not the counterflashing needs to be reinstalled after the new roofing is completed.

This counterflashing is in bad condition and would need to be reattached through the new roofing material which would void the warranty.

The copper flashing is to remain. It will need to be bent upward to install the new term bar and then rebent to its original configuration after the new roof is termination is complete. 5/11/2020

GOVERNMENT PRE AWARD INQUIRY FORM

Detail drawings 4/S-3.0 calls out for all exposed metal to be hot-dipped galvanized, through the U-bar shown is to be Stainless Steel. There is a concern with potential consequences to the integrity of the SS U-bar as well as its general appearance if it hot-dipped along with the HSS column and steel plate. Welding of the U-bar onto the plate also could not occur after the plate has been galvanized. A potential solution would be to weld a nut to the inside of the plate and use a stainless steel eye bolt in place of what is shown in the drawings. Could the owner/designer please advise on this issue?

Contractor is advised to bid as detailed.

5/11/2020

Can you give more clarification on detail 3 on page A500? No manufacturer will stand behind it as it is currently spec’d.

Slip flashing extend up underneath the existing EPDM and copper panels approximately 6" and the new EPDM is bonded to the flashing. The intent of the detail is so the copper panels do not need to be removed.

5/11/2020

Can we setup crane access from the road? 6th Street, E Monroe Street, S 7th

St? Are there specific permits we will need for blocking part of the street? Is there a limit on how long we can setup on the roads?

Contractor may make arrangements for permit to locate storage and equipment along city streets; and locate a crane on streets for loading/unloading. Contractor shall contact crystal.trent@springfield.il.us one month prior to the requirement to apply for permit. Contractor will not be authorized to use a crane on weekends which the city has downtown activities scheduled. The City stated that locating the crane in the alley behind the building would be the preferred location.

5/11/2020

Interior protection required over equipment in the attic? Is there anything that cannot get dirt, debris on it?

Contractor shall coordinate activities that will create dust with the GSA property manager, Phil Heimlich. There may be a requirement to turn off equipment prior to start of work.

Contractor will be responsible to remove debris and clean dust and debris from building floor, equipment, ductwork, conduit and piping.

5/11/2020

27 Is there structural or tapered insulation between the drains? The existing wood deck tapers to the drains. 5/11/2020

28 Flashing around the window sill? Provide slip flashing beneath copper similar to detail 3/A/500. 5/11/2020

For crane set up around the back, we may need to block some parking spots for current tenants. Do we need to include costs for their relocated parking?

Contractor shall include cost to provide seven (7) temporary parking spaces for staging area located in the southwest corner of the property. the identified staging are only is available during the building's hours of operation. All parking spaces will be available after hours of building operation.

5/11/2020

30 Additional clarification on the stair details? The bidder needs to give a more detailed question 5/11/2020

31 Can we use Polyiso insulation instead of Polystyrene insulation? Yes, polyisocyanurate insulation is the design intent 5/11/2020

GOVERNMENT PRE AWARD INQUIRY FORM

Additional tie off anchor points will need to be adjusted and additional ones added. It does not appear the system piping can be moved, but an alternative option would be to provide a unit price for additional tie-offs. There would be 2 unit prices, with one for each detail. Could you please clarify?

The pricing sheet is updated to include additional tie offs.

However, the government may accept or reject the line item pricing at the time of award and these line items are not included in the total evaluated price.

5/11/2020

Can the government please clarify what personnel the contractor shall always have on site?

All personnel on site will undergo a security clearance investigation and be issued clearance to be on site.

5/11/2020

The specifications mention a historical treatment specialist while also listing this person's credentials. Is the contractor supposed to hire a Historical treatment specialist?

Since this is a historic building, the contractor shall have a person with historical treatment credentials on site to ensure work is in compliance with the department of interiors requirements for the treatment of historic buildings as per the specifications.

5/11/2020

Can the contractor test the drains or does the contractor need to hire a licensed plumber to perform the drain testing?

The Government requires that that testing meets the specifications only.

5/11/2020

Has any asbestos been found within the roofing material? Has there been an asbestos test performed?

The roof system has been tested for ACM and the results were negative. The inspection report will be available.

5/11/2020

Can the government please specify the assembly method for the roofing material? The spec mentions multiple installation methods such as fully adhering, hot-mopping, and mechanical attachment.

Delete reference to asphalt materials; e.g. Section 07 53 23;

Paragraph 2.6 5/11/2020

Can the government please verify what sections are fully tapered verses structurally sloped?

The design intent is for flat insulation on sloped surfaces;

tapered insulation at flat areas (ie. sallyport and flat roofs over the stair towers), unless noted or detailed otherwise

5/11/2020

Can the government please verify if the contractor is to install flat stock insulation on the upper roof and full taper on the lower roof sections where walk-pads are to be located?

The upper roof has sloped wood decka nd the lower gutter areas with the walkway pads are also sloped to the drains.

Tapered insulation will be needed at the drain sumps and the areas noted in question 38 above

5/11/2020

The specification mentions a type 7 cover-board which seems to be a combo board that consists of insulation and gypsum board; however, the spec also mentions using individual insulation and cover board in 2 different pieces.

Can the government please specify what the contractor shall include in the bid?

The design intent is rigid insulation and 1/4" thick cover board.

5/11/2020

Can the government clarify if red-rosin paper shall be mechanically attached to deck, along with a self-adhering underlayment?

Red rosin paper shall be placed in accordance with roof system manufacturer.

5/11/2020

Will the government be willing to extend the bid date for the Paul Findley federal building roofing project another week? We fill that by doing so the contractors will be better able to provide a well-priced competitive proposal.

It will also give the government more time to answer questions that may be critical to the bidding process.

Please refer to Amendment 03.

5/11/2020

GOVERNMENT PRE AWARD INQUIRY FORM

Specification Section 11 01 04, 1.3 A. 3. d. states “Parapet or guardrails subject to direct loading by workers’ ropes, possibly cables, shall be designed to withstand such loading (typically 1,800 lbs) without damage to either the structure of the rigging component in contact with it."

Manufacturer has stated that the ballasted guardrail system called out on sheet S-1.0 of the project drawings will not meet this specification. Is there another specification section that this lower roof guardrail system would fall under?

The design intent is that fall protection equipment shall meet the OSHA requirements specified in SECTION 11 01 40 –

FALL PROTECTION EQUIPMENT

5/11/2020

It appears that most of the anchors are being welded on wide flange beams.

We can offer a beam wrap mechanical connection to avoid any welding, which would be less hazardous and also more cost efficient, while also meeting the exact criteria spelled out in the specifications. I have attached the wrap tech data sheet for you to reference. Will the government accept this alternate installation method?

The offeror shall price as per the details. If you want to provide an alternative you must clearly identify it in the proposal for what you are proposing and the price implication.

This allows the Government to properly evaluate.

5/11/2020

In the pre-proposal teleconference it was stated the project is intended to start in spring of 2021 weather permitting. This information cannot be located in the solicitation. Please confirm this is correct?

It is the intention of the project be completed in the spring/summer of 2021 since the fall of 2020 appears unlikely.

5/11/2020

Assuming work will start in spring 2021, will construction NTP date be determined by a negotiated or coordinated start date between GSA and the contractor based on weather and other factors at the time?

Once all security clearances have been received by the contractor, and he feels the weather during installation is compliant with manufacturer's requirement, the NTP can be issued.

5/11/2020

47 What is the anticipated date of contract award? The award is expected prior to September 30, 2020. 5/11/2020

Did GSA perform roof core cuts to determine existing roof thickness? If so, will GSA provide the report on the roof core cuts including all locations?

All roofs have fully adhered EPDM roofing. The insulation on the upper roof is made up of 2 layers of 1" extruded polystyrene and 1/2'" coverboard. The stair tower roofs have

1" polystyrene and 3" of polyisocyanurate insulation. The sloped roofs beneath the level of the copper panels do not have insualtion - EPDM is applied directly to the wood deck.

5/11/2020

Did GSA conduct a hazardous material survey for areas impacted by this project?

The roof system has been tested for ACM and the results were negative. The inspection report will be available.

5/11/2020

Is the presence of asbestos or lead containing materials suspected in areas impacted by this project?

The roof system has been tested for ACM and the results were negative. The inspection report will be available.

5/11/2020

What locations are available to the contractor for temporary power at roof level?

On the back corner of the Elevator Mechanical rooms there are panels at each end. So one at N.E. corner and one at N.W corner.

5/11/2020

GOVERNMENT PRE AWARD INQUIRY FORM

Are electric panels available in the attic for temporary power? If so, what size & how many breakers are available?

On the back corner of the Elevator Mechanical rooms there are panels at each end. So one at N.E. corner and one at N.W corner.

5/11/2020

Please confirm contractor will be permitted to conduct work operations during normal business hours and that no or limited after hours work is required?

The ccontractor will be allowed to perform work the will not disrupted tenant operations. 5/11/2020

Please confirm in the project superintendent can also serve and project

Safety Officer?

Yes, that is acceptable.

5/11/2020

Please confirm contractor may have daily access to the roof either through interior access to the attic roof door, or by stair tower access erected by the contractor to provide daily roof access from the exterior?

The contractor shall access the roof from te exterior of the building. All scaffolding and stairs shalle restrict access to the building and roof by unauthorized personnel.

5/11/2020

If a stair tower is set up for worker access to the roof, please confirm if scaffold base must be wrapped in plywood to prevent unauthorized access and render it “anti-climb”?

The contractor shall access the roof from te exterior of the building. All scaffolding and stairs shalle restrict access to the building and roof by unauthorized personnel.

5/11/2020

It is anticipated that all entrances of the building must be operational at all times during normal business hours. Does GSA anticipate it will be necessary to cover entrances with sidewalk scaffold canopies given the nature of work above on the roof? If so, for which entrances should the contractor plan to provide canopies?

There is one main entrace located on the east end of the North elevation. The contractor is responsible for safety. He shall determine how to protect pedestrians and persons entering and exiting the building. The price proposal shall include all requirements per the specifications.

5/11/2020

Similar to the above questions, does GSA anticipate it will be necessary for the contractor to provide a sidewalk canopy along all pedestrian sidewalks to provide protection from progress of work on the above roof?

The contractor is responsible for safety. There is one main entrance located along the east end of the front elevation.

Since the contractor is responsible for safety, they shall determine if pedestrian protection is required. The price proposal shall include all requirements per the specifications.

5/11/2020

Waste management requirements for recycling designated in section 017419 may require multiple dumpsters onsite for sorting of disposed materials? Can

GSA offer additional staging area beyond the limited area noted on sheet

G100?

Due to the confinment of the site, the contractor shall contact crystal.trent@springfield.il.us (City of Springfield) to make arrangements for locating dumpsters and equipment on city property.

5/11/2020

Terms of the roof warranty designated in section 075323 paragraph 1.7 indicates GSA is seeking a special contractor warranty beyond the standard one year contractor/installer warranty, and that the term of warranty GSA is seeking is 20 years. Surety companies will typically not issue bonds for projects with installer warranties in excess of 3 years unless it is specifically stated that the installer’s warranty is not required to be bonded. Please clarify the terms of the installers/roofers warranty required for this project. It should be noted that the installer’s warranty is separate from the manufacturer’s warranty.

The warranty is a typical 20 year manufacturer's warranty on the roofing system. The special requirements include any inspections required to maintain the manufacturer's warranty as per 1.7,A,2; and the stipulated response times and requirements as per 1.7,A,3 5/11/2020

GOVERNMENT PRE AWARD INQUIRY FORM

All details needed to install and flash EPDM at various intersections with the existing copper roof are not identified in the project drawings. Is it the responsibility of the A/E or contractor to design all flashing details to meet applicable standards including warrantable standards by the manufacturer?

Details not identified in the drawings are to be submitted to the architect for review and approval prior to installation to ensure an acceptable and warrantable installation. 5/11/2020

It states in the drawings that existing copper roof is to remain. Proper installation and flashing of new EPDM will disturb existing copper roof at certain locations. As stated in question 17, EPDM installation details have not been completed identified. Where copper roof must be disturbed to properly installed the new EPDM roof, is use of new bright copper acceptable to repair the copper roof? Or is copper required to be patinated to match existing green patina?

The slip flashing shown in 3/A500 is intended to be installed with minimal disruption to the existing copper panels and no removal of the panels. Patching of the copper panels is not anticipated where the copper meets the EPDM. 5/11/2020

Section 076200 paragraph 1.2 states that the section applies to flashing at lintels and thru wall flashings, flashings and window sills. Please clarify where respective scopes of work are on the building for the referenced locations of stainless steel flashing installation? Please expand on scope of work and details for each?

The flashing pertains to detail 1/A500. References to through wall flashing can be eliminated.

5/11/2020

Pertaining to question 21 above, the balance of section 076200 identifies through wall metal flashing work. Please confirm if this is the correct spec applicable to this project?

Pertaining to question 22 (not 21) - the exiting copper flashing is to remain. Paragraph 07 62 00-2.3 can be eliminated. 5/11/2020

Sheet D100 shows the bottom right dormers not shaded as if they are not included in the EPDM roof replacement. Please confirm if this is correct?

All of the dormers are intended to have roofs replaced.

5/11/2020

Revised drawings per Amend 1 are missing sheet A500. Is that intentional? A500 & A501 is included in Amendment 03.

5/11/2020

67 Please confirm if the roof drains and downspouts need to be heat traced? No, they are not 5/11/2020

Please provide an elevation drawing showing the height of the two new roof ladders or provide an approximate height. 3/S3.1

Roof to roof height is approximately 8'-0" 5/11/2020

Please confirm the extent/length of the KEEGARD guardrail. The plans show two runs- Grids 4.5 thru 7 and grids 10 thru 11.5 S1.0

The guard between grid 4.5 - 7 is 43'; the guard at grid 10-

11.5 is 21'.

5/11/2020

Will the government require multiple layers of insulation for this project?

The spec mentions 2" of insulation, but details in the plans/drawings reflect 2 layers of 1". May we use 1 layer of 2"?

Either is acceptable.

5/11/2020

Please confirm the EPDM membrane to be installed on both the field of the roof and flashings. Specification mentions 60 mil, internally reienforced sheeting and felt back sheeting.

Use 60 mil reinforced EPDM typical

5/12/2020

GOVERNMENT PRE AWARD INQUIRY FORM

Slip Sheet ASTM D2178/D2178M, Type IV; glass fiber; asphalt-impregnated felt. Please confirm that this is the intended vapor retarder as mentioned in detail 4/A501 in the drawings.

The Design Intent is that the vapor barrier be of a material provided and approved by the specified roof manufacturers so the whole system is approved and meets the warranty requirements specified.

5/12/2020

Please confirm the adhesiver to be used to install the EPDM membrane.

Specification lists bonding adhesive, water-based fabric-membrane adhesive.

With odors being a possible issue during construction, a self-adhered EPDM member may be the best option.

A self-adhered membrane is not one of the specified options.

5/12/2020

Please clarify the insulation system and attachment. Specification calls for 2" polyisocyanurate with a 1/4" glass-mat-faced gypsum board facer (composite insulation and coverboard system). Detail 3/A501 shows (2) layers of 1" polystyrene insulation and 1/2" coverboard. Which is correct? Also is this insulation to be adhered or mechanically fasted over the vapor retarder?

The design intent is rigid insulation and 1/4" thick cover board. Insulation is intended to be adhered per 07 53 23-

2.5.B.

5/12/2020