SOW - HAR RCAG Roof RFO.pdf

HARRISBURG

REMOTE RCAG BUILDING

ROOF INSTALLATION

SOUTHAMPTON TOWNSHIP, PA

DESCRIPTION/SPECIFICATION

SCOPE OF WORK

The work items listed below serve only as a statement for the general work to be done under this contract. In no way does it limit the amount of work required under this contract.

The work shall include, but is not limited to the following:

1. Install caulking in the joint between the existing concrete roof deck and exterior shelter wall.

2. Installation of fully adhered, 60-mil thick, non-reinforced, white, EPDM roofing system, mechanically fastened insulation boards, nailers, and steel drip edge trim on the existing concrete roof.

NOTES:

The existing flat roof does not have a parapet; therefore, the contractor must provide the appropriate fall protection for workers. The fall protection plan must be included in the contractors Health and Safety plan and submitted to the FAA for review (see Division 1).

SITE LOCATION

The HAR RCAG Facility is located between 116 Ridge Road and 122 Ridge Road Ridge Road, Southampton Township, PA. GPS coordinates N 40.001445 W -77.407526.

See site drawing for location maps.

PERIOD OF PERFORMANCE

This project must be completed within 30 days from receiving Notice to Proceed.

SPECIFICATION

TABLE OF CONTENTS

DIVISION 1 - GENERAL REQUIREMENTS

Section Title

1-1 Summary of Work 1-2 Construction Limits and Use of Facilities 1-3 Temporary Facilities 1-4 Insurance 1-5 Submittals

DIVISION 2 - 6 (NOT USED)

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

Section Title

7-1 Membrane Roofing - Single Ply 7-2 Metal Flashing

DIVISION 8 (NOT USED)

DIVISION 8 – 16 (NOT USED)

DIVISION 1 - GENERAL REQUIREMENTS

1-1 SUMMARY OF WORK

1-1.1 General

These specifications, together with the referenced specifications, standards and drawings specified in the Contract Documents, cover the requirements of the Federal Aviation Administration, hereinafter referred to as the Government or FAA, for all work associated with the roof installation for the Harrisburg RCAG building.

1-1.2 Intent of Specifications

This specification identifies all labor, materials and equipment necessary to perform the required work.

1-1.2 Site Visit Contact

Contracting Officer will provide the date and time of the site visit. Email Joseph Henn

(joseph.henn@faa.gov) to confirm attendance to the visit.

1-1.3 Health and Safety Plan

The contractor shall submit a health and safety plan prior to the issuance of the notice to proceed.

Plan must contain a section on fall protection.

1-2 CONSTRUCTION LIMITS AND USE OF FACILITES

1-2.1 Construction Limits

The Contractor shall confine operations, activities, storage of materials and employee parking within the areas designated by the RE. Space is limited at the site, therefore, the Contractor shall work coordinate all activities with the site preparation contractor. If necessary, contractor to obtain offsite storage/staging, at no additional cost to the Government.

1-2.2 Damage to Site

Damage to existing pavement, landscaping, structures or underground facilities caused by the Contractor's activities shall be repaired. All costs of such repairs shall be paid for by the Contractor. After notice to proceed and prior to commencement of construction, the Contractor and Resident Engineer (RE) shall conduct joint inspections of the existing areas affected by the construction. Existing damage or defects shall be noted and will be used as the basis for determination of damages caused by the Contractor's operations.

1-2.3 Contractors' Use of Premises

The Contractor shall have use of the premises within the construction area limits (as defined on the drawing) for the execution of his work and shall assume full responsibility for the protection and safekeeping of products and materials stored on the site.

The Contractor and subcontractors shall maintain the job site in a neat and orderly condition.

This includes the daily removal of rubbish, waste, tools, equipment, and materials not required for the work in progress.

1-2.4 Site Access

The FAA must escort the contractor to and from the site each day. Each worker must have a current valid Government identification (i.e. driver’s license, passport) to enter the worksite.

The FAA will provide an escort from the entry gate to the site at 7:00am and from the site at 3:00pm. If additional escorts are required during the workday, the contractor shall notify the FAA a minimum of 48 hours in advance.

1-2.5 Vehicle Marking

All contractor vehicles must have the company name and/or logo fixed to the vehicle.

1-2.6 Work Schedule

Normal work hours will be from 7:00 am to 3:00 pm, Monday through Friday. All work outside of the normal timeframe will be coordinated with the RE a minimum of 48 hours prior.

The Contractor will have three (3) calendar days to complete the project.

No work shall occur during periods of rain. The Contractor will provide necessary covering for exposed areas.

1-2.7 RUBBISH REMOVAL

The Contractor shall require each subcontractor engaged upon the work to bear full responsibility for cleaning up during and immediately upon completion of work each day.

Remove all rubbish, waste, tools, equipment and other apparatus at the completion of the project.

1-2.7.1 Rubbish Removal

Immediately after unpacking, all packing material, case lumber, wrappings, or other rubbish, flammable or otherwise, shall be collected and removed from the site and disposed of in accordance with local regulations on a daily basis.

1-2.7.2 Overall Cleaning

Thoroughly clean the job-site immediately before the final inspection, including but not limited to the following:

a) Remove all debris and rubbish from the site.

b) Remove all tools, scaffolding, temporary utility connections or buildings, belonging to the contractor or subcontractors.

1-3 TEMPORARY FACILITIES

1-3.1 General

The Contractor shall provide and pay for all temporary services and facilities as specified below and as necessary for the proper and expeditious execution of the work.

1-3.2 Temporary Toilets and Sanitation

The Contractor shall provide ample and suitable on-site sanitary conveniences with proper enclosures for the use of all workers. Keep such conveniences clean and properly ventilated.

Install, secure and maintain in conformity with requirements of all laws and ordinances governing such installation. Locations shall be subject to the RE's approval. Remove such conveniences from the site at the completion of project.

1-3.3 Temporary Electric Lighting and Power

The Contractor shall provide and maintain a temporary lighting and power system for construction and inspection purposes. The Contractor shall make all necessary arrangements for temporary electrical services and shall provide and pay for all temporary work.

1-3.4 Temporary Water

Site does not have a water source. Contractor must supply all water required for the project.

1-4 INSURANCE

Contractor insurance certificate to be submitted by the contractor after award. See contract clauses.

1-5 SUBMITTALS

1-5.1 Procedure

Submit all shop drawings and/or product data to the FAA General Engineer via email in a .pdf format. A set will be marked up and returned to the Contractor via email.

1-5.2 Shop Drawing Approval

Approval will not relieve the contractor of responsibility for any error which may exist. The contractor shall be responsible for the dimensions and design of adequate connections, details, and satisfactory construction of all work.

1-5.2.1 Approved as submitted - If "approved as submitted" is marked by the General Engineer, each copy of the shop drawings or product data will be identified as having received such approval by being stamped and dated. After submittal has been approved, no substitution will be permitted without written approval by the General Engineer.

1-5.2.2 Approved as noted - If "approved as noted" is marked by the General Engineer, the shop drawings or product data is satisfactory contingent upon contractor acceptance of corrections, notations, or both and, if accepted, does not require resubmittal.

1-5.2.3 Approved as noted - resubmission required - If "approved as noted-resubmission required" is marked by the General Engineer, the shop drawings or product data may be satisfactory contingent upon contractor resubmission of corrections, notations, or both. The effect of the notations or corrections is such that resubmission is required in order to evaluate the corrected data or drawings. Contractor shall resubmit the corrected material, in the same quantity as specified for the original submittal.

1-5.2.4 Not approved - If "not approved" is marked by the General Engineer, the shop drawing or submittal data does not meet job requirements and the contractor must resubmit. If shop drawings or submittal data are disapproved, the contractor shall resubmit the corrected material, in the same quantity as specified for the original submittal.

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

7-1 MEMBRANE ROOFING - SINGLE PLY

7-1.1 General

7-1.1.1 Work Included

A. Furnish and install a fully adhered unballasted single ply EPDM membrane roofing and flashing.

B. Cleaning substrate.

C. Sheet roofing.

D. Flashing and sealing sheet at termination.

E. Equipment support flashing.

G. Inspection by membrane manufacturer.

H.20 year total roofing system warranty.

7-1.1.2 REFERENCES

A. ASTM D297 - Rubber Products, Chemical Analysis.

B. ASTM D412

C. ASTM D573 - Rubber Deterioration in an Air Oven.

D. ASTM D624 - Rubber Property - Tear Resistance.

E. ASTM D746 - Brittleness Temperature of Plastics and Elastomers by Impact.

F. ASTM D1149 - Rubber Deterioration Cracking in a Chamber.

G. ASTM D2240 - Rubber Property - Durometer Hardness.

H. ASTM E96 - Water Vapor Transmission of Materials.

7-1.1.3 Qualifications of Contractors

A. Contractors shall be required to show evidence of a minimum of 5 years experience in actual installation of similar products, on projects of similar scope, in the geographic area of this project. The roofing applicator shall be a manufacturer's authorized applicator.

7-1.1.4 Quality Assurance

Install the roofing system in compliance with Shop Drawings as approved by the manufacturer. Deviations are not permitted without prior written approval of the manufacturer.

7-1.1.5 Product Data

Submit manufacturer's instructions for surface conditioner compatibility, elastic flashing, joint cover sheet, and joint and crack sealants, with temperature range for application of roofing membrane.

7-1.1.6 Submittals

Prior to installation, submit Shop Drawings to the RE and to the roofing system manufacturer. Manufacturer must supply approval of the final shop drawings to assure issuance of a twenty (20) year warranty. All submittals shall be in accordance with Division 1.

7-1.1.7 Delivery, Storage and Handling

Deliver materials to the job site in original, unopened containers labeled with the manufacturer's name, brand name and installation instructions.

Materials are not to be stored exposed for prolonged periods.

Keep underlayment dry and protect from the elements.

Adhesive containers shall not be stored with opened lids.

7-1.1.8 Environmental Requirements

A. Do not apply sheet roofing during inclement weather.

B. Do not apply sheet roofing to damp, frozen, dirty or dusty roof surfaces unacceptable to the manufacturer.

7-1.1.10 Warranty

A. Roof contractor shall provide a 20-year total roofing system written warranty covering the following:

1. Roofing and edge flashing (except metal flashing) shall be waterproof and weather tight for a period of 20 years after date of final acceptance.

2. Single sheet EPDM membrane roofing and flashing (except metal flashing) shall have 20 year written warranty provided by the membrane manufacturer.

B. Leaks or defects, such as blisters, cracks, tears, etc., which may occur during term of warranty shall be corrected within 48 hours after notification by Owner of their existence, at no cost to the Owner.

7-1.1.11 Standards

A. Roofing materials, insulation, and related components necessary to complete roof and deck system shall be as designed for:

1. Underwriters' Laboratories, Inc. (UL): Class A Fire Hazard Classification.

2. Factory Mutual Systems (FM): Roof assembly Classification I-90

(minimum).

3. ASCE 7: HAR RCAG is a critical building that is located within elevated, open flat land. Install additional perimeter insulation fasteners, if required by the roofing manufacturer.

B. Basis of design is:

1. Fully adhered system; Carlisle Design A.

7-1.2 Products

7-1.2.1 Acceptable Manufacturers

A. Carlisle Tire & Rubber Company

B. Firestone

C. Or approved equal

7-1.2.2 Materials

A.Membrane: Black compounded elastomer non-reinforced (EPDM), 60-mil thick for adhered system, conforming to the following minimum physical properties:

PHYSICAL PROPERTY TEST METHOD SPEC. FR

Tolerance on Normal Thickness,% ASTM D 412 +/-10 +/-10 Tensile Strength, min, psi (MPa) ASTM D 412 1305(9) 1780 (12.3) Elongation, Ultimate, min % ASTM D 412 305 495 Tear Resistance, min, lbf/in ASTM D 624 175(30.6) 215 (kN/m) (Die C) (37.6) Factory Seam Strength, min Modified Membrane Membrane ASTM D 816 Rupture Rupture Resistance To Heat Aging ASTM D 573 Properties after 4 Wks @ 240 deg. F.

Tensile Strength, min, psi (MPa) ASTM D 412 1200(8.3) 1800 (12.4) Elongation, Ultimate, min% ASTM D 412 225 230 Tear Resistance, min, lbf/in ASTM D 624 150(26.3) 240 (k/N/m) (42.0) Linear Dimensional Change, max, % ASTM D 1204 +/-2 -0.4 Ozone Resistance Condition after exposure to ASTM D 1149 No No 100 pphm Cracks Cracks Ozone in air for 168 hours @ 104 deg. F Specimen is at 50% strain

PHYSICAL PROPERTY TEST METHOD SPEC. FR

Brittleness Temp., max, deg. F ASTM D 746 -75 -85 (deg. C) (-59) (-65)

Resistance to Water Absorption ASTM D 471 After 7 days immersion @ 158 deg. F, Change in mass, max, % 4 2.0

Water Vapor Permeability ASTM E 96 2.0 2.0 max, perm-mils (proc B or

BW)

Resistance To Outdoor ASTM G 96 No No (Ultraviolet) Cracks Cracks

Weathering No No Crazing Crazing Xenon-Arc 4000 hours exposure, 176 deg. F black panel temperature Sheet Composition ASTM D 297

Weight percent of polymer that is EPDM, min, % 100 100 Weight percent of sheet that is EPDM polymer, min % 30 30

B. Flashing: 1/16 inch thick SURE SEAL Elastoform Flashing, as furnished by membrane manufacture.

C. Bonding Adhesive: As furnished by membrane manufacture. It shall be compatible with all materials to which the membrane is to be bonded.

D. Splicing Cement: As furnished by membrane manufacturer.

E. Lap Sealant: For sealing the exposed edge of the splices shall be trowel or gun consistency as furnished by membrane manufacturer.

F. Water Cutoff Mastic: As furnished by membrane manufacturer.

G. Prefabricated Accessories: As furnished by membrane manufacturer.

H. Sure-Seal Nite Seal: As furnished by Carlisle Tire & Rubber Company.

J. Fasteners: Fasteners shall be as recommended by the membrane manufacturer for each type of substrate and shall be FM approved.

K. Insulation: 1-1/2” thick Polyisocyanurate as recommended by membrane manufacturer.

7-1.3 Execution

7-1.3.1 Preparation

Roofing surfaces are to be thoroughly cleaned, smooth, dry, free of fines, sharp edges, loose and foreign materials, oil, grease, and fresh roof cement.

7-1.3.2 Installation

Application of the roofing system shall be done by a roofing contractor approved by the membrane manufacturer in order to obtain the 20-year warranty. Application is for Design "A" adhered system.

Nailers:

Install nailers and/or batten strips where recommended by the membrane manufacturer. Nailers shall be pressure treated for rot resistance, #2 or better lumber (Wolmanized or Osmose K-33).

Asphaltic or creosote tested lumber is not acceptable. Nailers are to be installed with the top flush with the top surface of the membrane underlayment.

Insulation Installation:

Installation of insulation shall be in compliance with manufacturer's installation recommendations. Fastening of the insulation is to be in accordance with approved shop drawings.

Do not install more insulation than can be covered by membrane in the same day.

Install insulation butted together with no gaps greater than 1/4 inch. Gaps greater than 1/4 inch must be filled with the same material.

Membrane Application:

Adhered System: Position Sure-Seal roofing membrane without stretching. Allow the membrane to relax for approximately one hour before bonding. Fold the sheet back 5 feet onto itself so that one half of the underside of the sheet is exposed. It is essential that the fold in the sheet be smooth, with no wrinkles or buckles, as these could result in wrinkling the sheet after it is bonded. Apply the bonding adhesive in accordance with manufacturer's published instructions, to both the sheet and the substrate, using a nine (9) inch, plastic core paint roller.

Apply the bonding adhesive evenly, avoiding globs and puddles. Allow the adhesive to dry until it does not string or stick to a dry finger touch. Roll the coated membrane into the coated substrate being careful to avoid wrinkles. Brush down the bonded half of the sheet with a soft bristle push broom to achieve maximum contact. Fold back the unbonded half of the sheet and repeat the bonding procedure.

Apply adjoining sheets in the same manner, lapping the edges a minimum of 3 inches.

Fold the top sheet back about 12 inches and clean both mating surfaces at the splice area using clean rags with Sure-Seal Splice Cleaner. Apply the splicing cement with a 3-inch roller at a rate of approximately 150 lineal feet of 3 inch splicing per gallon of splicing cement. Apply the cement in a smooth, continuous, even coat obtaining 100% coverage on both mating surfaces; the cement coat must be smooth with no globs or puddles. Allow the cement to dry until it does not string or stick to a dry finger touch. While the adhesive is drying, install a bead of inseam sealant as per manufacture detail. Roll the top sheet toward the splice area until the cemented area is nearly touching the cement on the bottom sheet. Allow the top sheet to fall freely into place;

avoid stretching and wrinkling. Roll the splice with a 2-inch wide steel roller, using positive pressure, toward the outer edge of the splice. Solvent clean the splice edge, extending at least 1 inch onto the top and bottom membranes. Apply a bead of lap sealant completely covering the splice edge, feathering the lap sealant with a putty knife or trowel.

Perimeter flashing and flashing around vents, curbs, drains, scuppers, etc., shall be done with

"Elastoform" flashing, using the longest pieces practicable. Complete the splice between the flashing and the main roof sheet before bonding the flashing to any vertical surface. Seal this splice at least 3 inches beyond the fasteners which attach the horizontal membrane to the nailer.

Apply bonding adhesive to both the membrane and the surface to which it is being bonded. After the bonding adhesive has dried to the point where it does not string or stick to a dry finger touch, roll the flashing into the adhesive. Take care to assure that the flashing is not bridging where there is any change of direction of the flashing.

Flash all projections (pipes, conduits, etc.) passing through the membrane. Prefabricated pipe seals shall be used to flash all pipes. Install all flashings and terminations in accordance with manufacturer's details.

Exercise care to ensure that water does not flow beneath any completed sections of roof, by temporarily sealing the loose edge of the membrane with "Nite Seal" when the weather is threatening and at end of each work day. Mix the two components thoroughly according to the instructions on the label. Apply the Nite Seal at a rate of 100 lineal feet per gallon, 12 inches back from the edge of the sheet. It may be necessary to use a trowel to spread the material in order to achieve the prescribed coverage. After embedding the membrane in the Nite Seal, weight the edge, providing continuous pressure over the length of the cutoff. When work is resumed, pull the sheet free before the installation is continued.

7-1.3.5 Daily Seal

When the completion of flashings and terminations is not completed by the end of each workday, provisions must be provided to temporarily close the membrane to prevent water infiltration.

Temporarily seal any loose membrane edge down slope so that the membrane edge will not buck water. Caution must be exercised to ensure that the membrane is not temporarily sealed near drains in such a way as to promote water migration below the membrane.

Sure-Seal Nite-Seal shall be used for temporary sealing of membrane edges and shall be applied as follows:

After embedding the membrane in Nite-Seal, CHECK FOR CONTINUOUS CONTACT.

Provide continuous pressure over the length of the temporary seal with 10 foot lengths of 2-1/2 inch diameter Sure-Seal Lay Flat Tubing filled with dry sand. Do not use wood nailers.

When work is resumed, pull the EPDM membrane free; trim and remove membrane where the

Nite-Seal was previously applied before continuing installation of adjoining sections.

7-1.3.6 Clean-up

Upon completion of the work all materials, equipment and debris are to be removed from the roofs.

7-1.3.7 Manufacturer's Inspection

After completion of the roof system, the approved applicator shall submit to the membrane manufacturer a request for inspection within seven (7) days of job completion, in a form required by the manufacturer. An inspection shall be scheduled with the manufacturer, the applicator, Contractor and the RE. The inspection shall be conducted by the manufacturer's field technician to determine conformance with manufacturer's current specifications and details. Any areas found not to be in conformance shall be written up by the technician and repaired or replaced by the applicator to meet the manufacturer's current specification and details. Upon completion of any repairs or replacement, the applicator shall submit a warranty form to the manufacturer for review.

Submit a twenty (20) year warranty to the RE.

7-2 METAL FLASHING

7-2.1 General

This section specifies requirements for all metal drip edge/fascia materials.

7-2.2 Submittal

Submit, in accordance with Division 1, manufacturer's product data, installation instructions and general recommendations for each specified sheet material and fabricated product.

7-2.3 Materials

All materials shall consist of steel metal sheet. Gauge shall be per roof manufacturer recommendations to achieve required roofing system warranty.

7-2.4 Execution

7-2.4.1 Installation

Except as otherwise shown on the Contract Drawings, comply with manufacturer's installation instructions and recommendations, and with SMACNA "Architectural Sheet Metal Manual."

Anchor work in place with adhesives, setting compounds or other devices as recommended by the manufacturer. Install work with laps, and joints filled with sealant which will be permanently watertight and weatherproof. Where metal is directly over masonry concrete and/or wood, provide felt between metal and such materials.

7-2.4.2 Protection

Perform required procedures or surveillance and protection of flashings during construction to ensure that work shall be without damage or deterioration, other than natural weathering at time of issuance of the Certificate of Final Completion.

SITE PHOTOS