STATEMENT OF WORK DATED 01 MAY 2024.pdf

STATEMENT OF WORK

Project Number VBDZ232107

01 MAY 2024

Repair Roof B1 Sec G & B26 Sec B

DESCRIPTION:

Building 1 has a low slope, ethylene polypropylene diene monomer (EPDM) membrane roof.

Section G of the roof membrane is no longer attached to the underlying board. The total surface area of Section G is approximately 5,400 square feet. Core cutout is described in the table below.

The roof is not currently leaking. The roof can be accessed through a staircase shown in the figure below.

OPTION: Building 26 has a flat EPDM roof. The roof is 26 years old, presents pinholes, and started to detach from the insulation. The total surface area of Section B is approximately 4,000 square feet. The core cutouts are described in the table below. The roof is leaking. The roof can be accessed through a ladder shown in the figure below or a portable ladder or lift.

The roofs are to be repaired per the most current version of Unified Facility Code (UFC) 3-110- 03 Roofing military standards. The UFC can be downloaded from https://www.wbdg.org. The roof area measurements are approximate and shall be field verified by the contractor during the site visit, and prior to offering a price estimate. Contractor may propose alternative solutions for consideration to the below scope prior to the contract award. If there is a contradiction between the UFC and this Scope of Work (SOW), Contractor shall bring it to the attention of the Contracting Officer Representative (COR), who will provide guidance.

Additional pictures added at the bottom of the document.

Building 1 General View

Building 26 General View

Roof Access staircase

Section G

Only, roof

Access ladder 5 ft wall, no ladder

Lower Roof, can’t be used for access

Dumpster location, do not block the road

Section B

Building Area (SF) Core Cutout Existing Roof Penetrations

#1, Section G 5,400

4” total:

Concrete deck 3” insulation, old EPDM, ½” wood fiber board, Newer EPDM

4 roof drains 4 soil stacks 2 pipe portal boxes and pitch pockets 8’x 9’ elevator shaft 5” standard metal drip edge

OPTION

#26, Section B

4,000 6” to 4 ¾“ total :

Metal deck, ¼” taper 2 layers of insulation, EPDM

2 roof drains 1 soil stack 1 pitch pocket 5” standard metal drip edge

Building 1 Section G

Roof to replace

HVAC, will be moved by the base. Elevator Shaft

Building 26 Section B (OPTION)

1. BASE BID SCOPE – ROOF 1, SECTION G

1.1 EXISTING ROOF SYSTEM REMOVAL: Remove and dispose of the existing roof membrane and insulation down to the concrete deck and replace it with an entirely new roof system. No material reuse is allowed. Contractor to provide their own dumpster. Dumpster disposal locations and movement must be pre-coordinated with COR. Per 29 CFR 1926.852(a), no material shall be dropped to any point lying outside the exterior walls of the structure unless the area is effectively protected (For example: metal or ski fence).

Cricket

Roof to replace

Remove an old conduit boxes

1.2 COMMUNICATION EQUIPMENT AND HVAC: Coordinate the handling of the communication wires and the HVAC unit with the COR. The base will disconnect and move out of the way the HVAC equipment on the roof. .

1.3 NEW ROOF: New roof system is to consist of the following materials: new 87 mil vapor barrier, new tapered polyisocyanurate insulation (R30 rating), wood blocking as required, and new non-reinforced 90 mil ethylene polypropylene diene monomer (EPDM) membrane as specified below. All lap seams shall be fabricated with 6 in. (150 mm) seam tape and stripped-in with self-adhering, semi-cured EPDM cover strips.

1.3.1 CONCRETE DECK PREPARATION: Inspect the concrete deck for areas that may need repair. All joints shall be caulked or grouted. Dry any areas of concrete that may be wet. Concrete deck surface to be free of dirt and debris, clean and dry.

Confirm roof penetrations are all sealed appropriately. Repair any gaps, cracks, or holes observed.

1.3.2 CONTRACT OFFICER REPRESENTATIVE (COR) NOTIFICATION: Notify COR upon removal of the existing roof. Inspection of the concrete deck is to occur by the COR, and technical CE representative, prior to the start of the new installation. COR or other CE appointed technical representative to be notified for the opportunity to inspect at each layer.

1.3.3 CONCRETE SURFACE PREPARATION: Prime existing concrete deck with roof primer according to the membrane manufacturer’s instructions.

1.3.4 VAPOR BARRIER INSTALLATION: Install a new torch-applied SBS-modified asphalt vapor barrier directly to the concrete deck. The minimum thickness shall be

Proposed dumpster location in an 87 mil (2.2 mil) range. Other new vapor barrier systems will be considered for approval but must be submitted for approval prior to purchase and installation.

1.3.5 INSULATION: Install two layers of polyisocyanurate tapered insulation (R-30 insulating value is required) in low-rise foam insulation adhesive. Shape insulation around roof drains of the roof section to promote proper slope to roof drains and eliminate the pooling of water. Build up the perimeter with tapered insulation to help move water toward drains. A tapered insulation plan is provided below.

However, an alternative plan that is easier to implement and could be cheaper will be considered if provided during the bid phase. An insulation plan shall be approved by COR.

Insulation Plan

Roof Details (from the original 1951 design documents)

1.3.6 COVER BOARD: Install a ½” glass mat gypsum roof board (pre-primed) in low-rise foam insulation adhesive. Note that these roof sections are subject to high winds (109mph per ASCE 7-16) and uplift scenarios. Use to meet wind uplift calculations required by ANSI/SPRI ES-1 for uplift calculations. Alternate recommendations for cover board material will be considered, however, must be submitted for approval and acceptance by the COR.

1.3.7 WOOD BLOCKING: Furnish and install pressure-treated wood blocking to an equal new height at the roof edge and the height of the existing roof that is not being replaced as required.

1.3.8 SINGLE-PLY ROOF MEMBRANE: Install a fully adhered, non-reinforced 90 mil EPDM (black) sheet. Installation to include a layer of contact adhesive to the substrate and the sheet. All lap seams shall be fabricated with 6” seam tape and stripped-in with self-adhering, semi-cured EPDM cover strips. Care should be taken during installation to not rip or damage any section of EPDM with tools, etc... No repaired sections of EPDM will be accepted. All EPDM section must be new.

1.3.9 METAL EDGE: Install new prefabricated metal edge and fascia to meet wind uplift calculations. Materials to be certified by ANSI/SPRI ES-1. Material and color to match existing, and to be preapproved by COR. Seal the metal edge.

1.3.10 PENETRATIONS: all the penetrations shall be watertight and sealed per manufacturer recommendations and pre-approved by COR.

1.3.11 CANT: Install a cant strip along the wall and bring the membrane at least 2” above the cant.

1.4 Contractor to handle and store all materials according to manufacturer’s requirements. This includes temperatures and other requirements.

2 OPTION BID SCOPE – ROOF 26, SECTION B

2.1 REMOVAL OF EXISTING MEMBRANE: Carefully remove and dispose of existing roof membrane, leaving existing insulation in place.

2.2 INSULATION INSPECTION/SHAPING: Inspect existing insulation to determine if any water damage is present. Infill and replace any existing insulation. Shape insulation around roof drains of Roof Section to promote proper slope to roof drains and eliminate pooling of water. Build up perimeter with tapered insulation to help move water towards drains.

Insulation plan is shown below.

2.3 COVER BOARD: Install a ½” glass mat gypsum roof board (preprimed) in low-rise foam insulation adhesive.

2.4 WOOD BLOCKING: Furnish and install pressure treated wood blocking around perimeter to equal new insulation height at roof edge as required.

2.5 SINGLE-PLY ROOF MEMBRANE: Install a fully adhered, non-reinforced 90 mil EPDM (black) sheet. Installation to include a layer of contact adhesive to substrate and the sheet.

All lap seams shall be fabricated with 6” seam tape and stripped-in with self-adhering, semi-cured EPDM cover strips.

2.6 Install new pre-fabricated metal edge and fascia to meet wind uplift calculations required by ANSI/SPRI ES-1. Color to match existing and to be pre-approved by COR.

2.7 Seal all the flashings, metal edge, penetrations, and transitions with the adjacent walls.

2.8 An insulation plan, wall cap, roof curb, wall flashing, roof drain, and vent detail are provided. Any alternative insulation plan shall be approved by COR.

Insulation Plan Alternatives

Roof details

Roof penetrations

3 ROOF PENETRATIONS, DRAINS, AND FLASHING FOR BOTH BUILDINGS

3.1 Contractor shall remove and replace the flashing to match surrounding sections.

3.2 High winds are prevalent along both roofs. All edges should be a prefabricated metal edge components certified by ANSI/SPRI ES-1 to accommodate wind uplift requirements.

3.3 In addition to building perimeter and edges, a termination strip will be required where Roof

Section meet the walls.

3.4 Confirm all roof penetrations are properly sealed, with no gaps. If gaps exist, Contractor to repair.

3.5 Existing drains should be able to be reused. Drain covers/caps are damaged in some locations and should be replaced with new. Slope of surrounding roofing insulation and materials is to promote water passage to drain without visible pooling. Rise or lower the drains as needed.

4 CONTRACTOR REQUIREMENTS

1.1. The contractor shall comply with all applicable installation/facility access and local security policies and procedures, which may be obtained from the Contracting Officer’s Representative (COR). The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the local installation’s Security Forces, Director of Emergency Services or local Security Office. The contractor shall ensure compliance with all personal identity verification requirements as directed by DoD, HAF and/or local policy. Should the Force Protection Condition (FPCON) change, the Government may require changes in contractor security matters or processes.

1.2. Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (AFI 31-101 and AFI 10-245), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

1.3. All contractor employees, to include subcontractor employees, requiring access to Government Installations, Facilities and Controlled Access areas shall complete AT Level I awareness training within 10 calendar days after contract start date or effective date of incorporation of this requirement into the contract, whichever is applicable. Certificates of completion for each affected contractor employee and subcontractor employee will be maintained by the COR or Antiterrorism Representative. AT level I Awareness Training is available through MyLearning by completing the Force Protection CBT. For Contractors that do not require issuance of a CAC, local training will be provided during badge issuance at SFS via informational binder.

1.4. Requirement for OPSEC Training. In accordance with AFI 10-701, Operations Security, OPSEC PMs/SMO/SMNCOs/Coordinators will provide OPSEC training or training materials to contract employees within 90 days of employees’ initial assignment to the contract and annually thereafter. General organizational orientations may need to be supplemented by duty-related orientations in the work center targeted toward specific critical information and vulnerabilities associated with the work. Initial training (OPSE 1301 - OPSEC Fundamentals) and refresher training (Protecting Sensitive Information) are both available on the MyLearning website. For Contractors that do not require issuance of a CAC, local training will be provided during badge issuance at SFS via informational binder.

1.5. The use and possession of controlled substances to include marijuana (medical or recreational use) on the installation is in violation of Title 10 US Code 912a. Art 112a.

Contractors are notified this policy is strictly enforced and violators will be denied entry.

Personnel caught on the installation can be prosecuted.

1.6. The Contractor shall provide all personnel and necessary equipment to establish an adequate and safe work zone. OSHA is applicable at the site and inspectors appear unexpectedly.

1.7. Contractor is responsible for site cleanliness and shall remove any waste or debris after the work is complete. All materials shall be secured to prevent loose objects from blowing and hindering flying operations in any manner.

1.8. The Contractor shall recycle to the greatest extent possible and turn in weight slips to 109 Environmental Management Office for construction debris.

1.9. The Contractor shall bring any unforeseen project conditions to the attention of the COR immediately. Unexpected or differing site conditions, which may alter the scope of work, shall be approved by the contracting officer (KO) prior to such work being performed.

1.10. The Contractor must get approval from the COR prior to any utility shutdowns.

(do not have contractor contact production control directly)

1.11. The Contractor shall notify the COR prior to delivery of any material or equipment to the site. The contractor shall ensure someone is available to receive delivered materials and able to store them safely in an area to be coordinated with the government project manager. Any materials delivered without prior coordination and without having someone to take receipt, shall not be accepted and turned away.

1.12. Contractor shall repair or replace in kind any property that is damaged.

1.13. Contractor hours are 0700-1530 Monday thru Friday, excluding Government holidays.

5 PROPOSED PROJECT SCHEDULE

The Project shall begin 14 days after the Notice to Proceed is issued. The start date may be changed with approval of Contracting Officer. The project shall be completed within 30 days following the Notice to Proceed or agreed start date. The new roof shall be installed within 14 days from the beginning of the demolition for each of the buildings. Roof shall be protected from the rain and wind during the construction.

6 ADDITIONAL PICTURES

Building 1, Section G

B26 Section B separated membrane

Building 26 Section B

Kinks and Separated membrane on Section B