8. SOW for NLZG262014 Roof Patching Multiple Buildings.pdf8. SOW for NLZG262014 Roof Patching Multiple Buildings.pdf

Project # NLZG262014 Roof Patching Multiple Buildings

STATEMENT OF WORK

NLZG262014 Roof Patching Multiple Buildings

1.01 SCOPE: The Contractor shall furnish all labor, materials, equipment, safety systems, mobilization, and supplies necessary to patch leaking areas, inspect, and re-seal all roof penetrations and flashing on roofs at four (4) distinct facility structures: Building 875, Building 887, Building 876, and Building 2000. The work includes custom patching methods suited to ballasted built-up roofs (BUR), unballasted BUR, and standing-seam metal roofing systems, as well as specialized high-clearance access rigging.

1.02 LOCATION: Rickenbacker ANGB, Buildings 875, 887, 876, and 2000.

1.03 COORDINATION: Notify 121st Civil Engineering at 614-492-4121 or contact Mr. Mike

Hissom at 614-492-4459 a minimum of two days prior to starting any work. Coordination with the 121st CES is mandatory.

1.04 SUBMITTALS:

A. Quote must contain an itemized list for labor, parts, materials, equipment rental and any other incidental expenses.

B. Contractor shall provide a detailed schedule of construction for this project.

C. Contractor shall include with their proposal what GREEN Procurement (Re-Cycled-Bio Based Content) items which they intend to use on the contract (if applicable).

The following web sites should be reviewed for materials which can be used in the Governments Green Procurement effort.

Information on Recycled content requirements: www.epa.gov/cpg (Check under Products/Construction Material)

Information on Bio based program: www.biobased.oce.usda.gov

D. The following items must be submitted by the Contractor after award at the Pre- Construction Conference:

1. Contractor will provide SDS Sheets for all: concrete, glues, sealants, solvents, additives, cleaners and fuels to be used. All other substances of a flammable, corrosive and toxic nature shall be submitted as well.

2. Contractor will ensure that each of the aforementioned SDS items are listed on a Transient Organization Hazardous Material Inventory Sheet and submitted for approval prior to starting work.

3. To be turned in upon completion of work. Contractor will fill out a Solid Waste Disposal Spreadsheet, which tracks construction debris that goes to dump sites or that is recycled. (When applicable). The intent is to capture quantities and costs.

http://www.epa.gov/cpg http://www.biobased.oce.usda.gov/

1.05 WORK TO BE ACCOMPLISHED:

1. Background: The roofing systems on Buildings 875, 887, 876, and 2000 have experienced age-related wear, resulting in localized water intrusion (leaks) and degrading sealants at joints, seams, roof penetrations, and flashing perimeters. The intent of this project is to perform localized, high-quality, weather-tight patching at the active leak sites identified in the attached facility drawings, conduct rigorous overall inspections, and systematically re-seal flashing, metal joints, and penetrations to restore watertight integrity and protect building interior assets.

2. General Requirements:

a. All materials and work shall be in accordance with (IAW) Department of Defense Unified Facilities Criteria (UFC) 3-110-03 (Roofing) and applicable NRCA (National Roofing Contractors Association) standard details.

b. Contractor is responsible for verifying exact dimensions, access restrictions, and safety requirements for each facility prior to commencing operations.

3. Detailed Technical Requirements by Building:

a. Building 875 (Ballasted Built-Up Roof — 42,200 SF, Single Story)

i. Leak Patching: Locate and patch four (4) distinct leaking areas as identified on the Building 875 floor plan.

ii. Patching Requirements:

1. Contractor shall carefully scrape back and temporarily remove gravel ballast from a minimum 6-foot by 6-foot perimeter centered on each of the four (4) leak areas.

2. Inspect underlying plies, remove damaged/saturated felts, and install new multi-ply hot-mopped or cold-applied built-up roof patches, integrating seamlessly into existing plies.

3. Re-apply gravel ballast over patched areas using compatible flood coat adhesive once fully cured.

iii. Penetrations and Flashing:

1. Inspect all penetrations (pipes, vents, equipment curbs, HVAC sleepers) and perimeter flashing.

2. Remove failed/cracked sealants, scrape away loose gravel or old pitch-pocket filler, and apply new high-performance elastomeric sealants, flashing cements, and reinforcing fabric (glass mesh) as required to ensure a 100% watertight seal.

b. Building 887 (Unballasted Built-Up Roof — 42,000 SF, 3-Story)

i. Access and Rigging: Contractor must account for the 3-story elevation.

Provide all necessary hoisting equipment, material cranes, and OSHA-compliant fall-protection systems (warning lines, safety harnesses, and anchorages) required to execute work at heights safely.

ii. Leak Patching: Locate and patch six (6) distinct leaking areas as identified on the Building 887 third floor plan.

iii. Patching Requirements: Repair using compatible unballasted BUR patching standards (multi-ply patch or heavy-duty modified bitumen cap sheet patch) to match the existing roof composition.

iv. Penetrations and Flashing: Thoroughly inspect and re-seal all penetrations, drains, expansion joints, and parapet flashing across the 3-story roof area using industry-standard polyurethane or silicone sealants and SBS-modified flashing compounds.

c. Building 876 (Metal Standing-Seam Roof — 22,500 SF, Single Story)

i. Access and Rigging: Contractor shall provide specialized interior and exterior safety setups, including scissor lifts, scaffolding, or articulating boom lifts, to access both the high exterior roof and the interior/exterior elements of the central atrium.

ii. Leak Patching: Locate and patch two (2) distinct leaking areas as identified on the Building 876 Floor Plan:

1. Two-Story Atrium Clerestory: Leak located in the central clerestory structure. The contractor must inspect and re-seal the specialized glazing joints, transition metal flashing, and sill framing of the clerestory unit.

2. Roof-to-Parapet Junction: Leak located on the northeast perimeter wall where the metal roof decking meets the masonry parapet wall. The contractor must replace or re-secure the transition flashing, counter-flashing, and structural termination bar.

iii. Patching Requirements: Repair using metal-compatible elastomeric membranes, butyl-tape sealants, and high-performance polyurea coatings, ensuring compatibility with the existing standing-seam metal roof coating and thermal movement properties.

iv. Penetrations and Flashing: Inspect and re-seal adjacent metal roof seams, fastener penetrations, ridge caps, and gutters within a □(15" ft" ) radius of each leak location.

d. Building 2000 (Unballasted Built-Up Roof — 40,000 SF, Two-Story)

i. Access and Rigging: Contractor must provide appropriate scaffolding or mid-reach boom lifts (minimum 40-ft reach) to access the 2-story roof line safely.

ii. Leak Patching: Locate and patch four (4) distinct leaking areas as identified on the Building 2000 2nd Floor Plan.

iii. Patching Requirements: Repair using unballasted BUR multi-ply patches cold-adhered or torched, properly feathered to prevent water ponding at the margins.

iv. Penetrations and Flashing:

1. Inspect all 2nd-story roof penetrations, expansion joints, and perimeter flashing.

2. Re-seal all degraded curb flashing, pipe penetrations, and counter-flashing using professional-grade UV-resistant sealants and poly-mesh reinforced mastic.

1.06 SAFETY: High-altitude fall protection, interior/exterior atrium safety rules, and aerial lift safety regulations will be strictly enforced. All precautions necessary to ensure the safety of personnel and the protection of existing equipment and structures will be strictly enforced. All OSHA standards shall be met.

1.07 CONSTRUCTION DIRT AND DEBRIS: The contractor shall remove any dirt, debris, or construction waste that collects during construction on the traveled roadways or existing pedestrian facilities on the base as directed by the Base Civil Engineer.

1.08 CONSTRUCTION STAGING OF EQUIPMENT: The contractor shall coordinate with the Base Civil Engineer appropriate locations for overnight storage/staging of construction equipment, cranes, and lifts.

1.09 HAZARDOUS MATERIALS REQUIREMENTS:

1. HAZMAT shall not be stored on base unless with written permission from the Contracting

Officer and the HMP.

2. The contractor shall register through the Contracting Officer with the base Hazardous Material Pharmacy (HMP) prior to starting work.

1.10 SITE CONDITIONS: Submission of a proposal by a contractor shall be considered evidence that the contractor has examined the statement of work and is satisfied as to the nature and location of the work and all matters, which can in any way affect the work or the cost of the work under the proposal.

1.11 BID SCHEDULE: Bids shall be submitted with prices broken out into four (4) Contract Line Item Numbers (CLINs) representing each facility:

1. CLIN 0001: All labor, materials, equipment, and safety measures associated with the patching of four (4) leaks and penetration/flashing sealing at Building 875 (Ballasted BUR).

2. CLIN 0002: All labor, materials, hoisting equipment, safety compliance systems, and patching of six (6) leaks and penetration/flashing sealing at Building 887 (Unballasted BUR

— 3-Story).

3. CLIN 0003: All labor, materials, interior/exterior scaffolding, lifts, specialty metal sealants, and patching of two (2) leaks at Building 876 (Metal Roof — Atrium Clerestory and Parapet).

4. CLIN 0004: All labor, materials, mid-reach lifts, and patching of four (4) leaks and penetration/flashing sealing at Building 2000 (Unballasted BUR — 2-Story).