ATTACHMENT 14-ADDENDUM 1.pdf

ADD1-1

FEDERAL AVIATION ADMINISTRATION

MIKE MONRONEY AERONAUTICAL CENTER

Renovation of MPB-24 (Multi-Purpose Building)

OKLAHOMA CITY, OKLAHOMA

Addendum #1

January 31, 2018

Architects Engineers Planners

5801 Broadway Extension, Suite 500

Oklahoma City, Oklahoma 73118-7436

Telephone # (405) 840-2931 FAX # (405) 842-7750

Attachment 14

ADD1-2

GENERAL ITEMS

ITEM 1-1 Substitution Requests: Pre-bid substitution requests are not permitted

SPECIFICATIONS

ITEM 1-2 SECTION 010300 – OPTIONS (this Section is re-issued in its’ entirety. Changes are identified in Bold Italics)

ITEM 1-3 SECTION 075500 – MODIFIED BITUMEN MEMBRANE ROOFING (this Section is re-issued in its’ entirety. Changes are identified in Bold Italics)

ITEM 1-4 SECTION 010100 – SUMMARY OF WORK (this Section is re-issued in its’ entirety.

Changes are identified in Bold Italics)

ITEM 1-5 SECTION 262816 – ENCLOSED SWITCHES AND CIRCUIT BREAKERS (this Section is re-issued in its’ entirety. Changes are identified in Bold Italics)

ITEM 1-6 SECTION 275116 – PUBLIC ADDRESS SYSTEMS (this Section is now issued as a part of the Contract Documents)

DRAWINGS

ITEM 1-7 Refer to attached AMP-400-E-TY001 (Revised Sheet)

ITEM 1-8 Refer to attached AMP-400-E-TY101 (Revised Sheet)

ITEM 1-9 Refer to attached AMP-400-E-TY102 (Revised Sheet)

ITEM 1-10 Refer to attached AMP-400-E-TY103 (Revised Sheet)

ITEM 1-11 Refer to attached AMP-400-E-TY104 (Revised Sheet)

ITEM 1-12 Refer to attached AMP-400-E-TY111 (Revised Sheet)

ITEM 1-13 Refer to attached AMP-400-E-TY112 (Revised Sheet)

ITEM 1-14 Refer to attached AMP-400-E-TY113 (Revised Sheet)

ITEM 1-15 Refer to attached AMP-400-E-TY114 (Revised Sheet)

ITEM 1-16 Refer to attached AMP-400-E-TY121 (Revised Sheet)

ITEM 1-17 Refer to attached AMP-400-E-TY122 (Revised Sheet)

ITEM 1-18 Refer to attached AMP-400-E-TY123 (Revised Sheet)

ITEM 1-19 Refer to attached AMP-400-E-TY124 (Revised Sheet)

ITEM 1-20 Refer to attached AMP-400-E-TY131 (Revised Sheet)

ITEM 1-21 Refer to attached AMP-400-E-TY132 (Revised Sheet)

ITEM 1-22 Refer to attached AMP-400-E-TY133 (Revised Sheet)

ITEM 1-23 Refer to attached AMP-400-E-TY134 (Revised Sheet)

ITEM 1-24 Refer to attached AMP-400-E-TY140 (Revised Sheet)

ITEM 1-25 Refer to attached AMP-400-E-TY401 (Revised Sheet)

FAA - W.O. #2013007860 JANUARY 31, 2018

SUMMARY OF WORK 010100 - 1

FSB / FAA MPB Renovation (Type B)

SECTION 010100 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Work Description.

B. Phasing Requirements

C. Contractor use of site and premises.

D. Permits and Licenses.

E. Owner occupancy.

F. Project Funding

1.2 RELATED SECTIONS

A. A. Section 010300 – Options – Description of Options.

1.3 WORK DESCRIPTION

A. Work Location: Federal Aviation Administration, Mike Monroney Aeronautical Center, MPB-24 Building, Oklahoma City, Oklahoma, 73169

B. Completion of Work: The Contractor shall be required to (a) commence Work under this contract within the designated calendar days after the date the Contractor receives the notice to proceed, (b) execute the Work diligently, and (c) complete the entire Work ready for occupancy and use not later than: 1,390 Days after notice to proceed.

1. Phase One: The Renovation of the partially occupied Basement - 300 calendar days after notice to proceed.

2. Phase Two: The Balance of the Project - 1,090 calendar days after notice to proceed.

C. BASE BID:

1. Demolition of existing interior walls, stairwells, elevator shafts, HVAC equipment and ductwork, below grade and interior plumbing lines and waste lines, sewage ejectors and vents, ceiling and wall finishes, electrical and telephone/communications/data lines, conduit, cabling and equipment.

2. Removal of existing concrete floor slab, excavation of existing sub-soil and the installation of new Structural Cross-Bracing and associated Foundations.

3. Placement of new structural fill material below floor slab and the replacement of concrete floor slab where indicated.

4. Refer to individual discipline drawings to determine detailed scope-of-work.

SUMMARY OF WORK 010100 - 2

5. New interior finishes to provide new administrative spaces consisting of new carpet tile, the installation of access flooring, new carpeting at select areas, new interior GWB partitions, new acoustical panel ceilings, renovated toilet areas, new lighting, new

HVAC system including new ductwork for the renovated basement area, new electrical system including power, lighting, communications and security system.

D. PHASE TWO Work Includes: Renovation of the approximately 63,000 partially, critically occupied First Floor, approximately 48,000 Second Floor and 48,000 Third Floor and associated New HVAC Equipment on the Roof and a partial roof replacement. The Owner will have occupancy of the Basement and the Data Center on the First Floor only (Critical

Occupancy). All other areas will be vacated.

1. Demolition of existing interior walls, stairwells, elevator shafts, HVAC equipment and ductwork, below grade and interior plumbing lines and waste lines, vents, ceiling and wall finishes, electrical and telephone/communications/data lines, conduit, cabling and equipment.

2. The removal of the existing exterior facade of the building and replacement with new exterior wall systems.

3. The installation of new Structural Cross-Bracing at the exterior and interior of the building.

4. The modification of the existing building expansion joints.

5. The addition of new structural concrete slab at the perimeter of the elevated floor plates, and the installation of cold-formed steel stud infill to support the new exterior facade materials.

6. Refer to individual discipline drawings to determine detailed scope-of-work.

7. New interior finishes to provide new administrative spaces consisting of new carpet tile, the installation of access flooring, new carpeting at select areas, new interior GWB partitions, new acoustical panel ceilings, renovated toilet areas, new lighting, new

HVAC system including new ductwork for the renovated basement area, new electrical system including power, lighting, communications and security system.

E. Options 1, 2, 3, 4 and 5 as described in Section 01030 – Options; Options may or may not be accepted, and are not dependent on any priority of selection.

F. Work DOES NOT Include:

1. Furnishing or installation of new or existing furniture, except as specifically noted.

2. Abatement of asbestos containing material (ACM); however, ACM removal must be accommodated by the contractor in the overall construction schedule.

1.4 PHASING REQUIREMENTS

A. The contractor shall be responsible for providing temporary service to the facility throughout the demolition of the existing equipment in the electrical vault, up until final connection and energization of the new electrical service.

B. The contractor shall give at least ten working days notice before any scheduled interruption of electrical service to any areas included in the scope of the project.

SUMMARY OF WORK 010100 - 3

C. The contractor shall obtain and abide by all applicable requirements of the FAA Construction

Safety and Phasing plans as required by the FAA project manager.

D. Refer to other paragraphs in this section for specific definition of the phases of this project.

Trade-specific definitions are further described in other Divisions of the Project Specifications.

1.5 CONTRACTOR USE OF SITE AND PREMISES

A. Limit use of site and premises to allow:

1. Owner occupancy:

a. PHASE ONE: The Owner will have partial occupancy of the Basement, Studio

Area, Print Room; the Data Center on the First Floor (Critical Occupancy); the remainder of the First Floor, Second Floor and Third Floor. The estimated number of FAA Staff that will occupy the space will be approximately:

1) Six (6) Staff in the Print Room in the Basement

2) Ten (10) Staff in the Studio Graphics Area in the Basement

3) Four (4) Staff in the Data Center (critical occupancy) on the First Floor.

4) Approximately 450 Staff on the First, Second and Third Floors.

2. Work by others.

a. FAA IT personnel will be installing telecommunications and security equipment.

b. Abatement of asbestos containing material (ACM); however, ACM removal must be accommodated by the contractor in the overall construction schedule.

B. Access to Site: Coordinate site access and staging areas with FAA project manager prior to commencement of work.

C. Security Requirements: Contractor shall comply with all applicable Department of

Transportation (DOT), FAA, and MMAC security directives while performing Work of this contract.

D. User / Owner Occupancy: The Print Room, Studio Graphics in the Basement and Data

Center on the First Floor of the building will be occupied throughout the duration of this project. The Contractor shall make every effort to not disrupt the day to day operations of this facility. The Contractor will be responsible for providing safety barriers, warnings, temporary lighting, heating and other appurtenances necessary to keep the occupants safe. Contractor shall provide temporary dust-proof partitions to demark exit travel and maintain safe egress from the building for the second floor occupants of the building at all times. At least three means of egress from each floor are required to be accessible at all times. .

Time Restrictions – Base Bid: Work shall be conducted between 6:00 a.m. and 6:00 p.m. on normal government workdays. No Work, with the exception of the demolition work as described below, shall occur at night, or on Saturday’s, Sunday’s or designated government holidays unless approved by the Contracting Officer seven (7) days in advance.

SUMMARY OF WORK 010100 - 4

1. All demolition including the removal of the existing concrete slab, sub-soil removal below existing concrete slab, demolition and removal of interior GWB and CMU partitions, windows, floor, wall and ceiling finishes, HVAC equipment and ductwork, plumbing and waste lines and vents, electrical demolition and removal, and any or all other items related to demolition, shall be between the hours of 6:00 P.M and 6:00 A.M

Monday thru Friday. Work on the demolition may also be accomplished on weekends and approved government holidays. Work during these times (weekend and government holidays), must be pre-approved and scheduled in advance. Provide a minimum of seven (7) days prior notice to AMP-400, Project Manager, Mike Monroney Aeronautical

Center, 405-954-4574 to coordinate scheduling of any work to be done outside of the occupants normal working hours.

E. Utility Outages and Shutdown: Coordinate with the Project Manager at 405-954-4574. Outages affecting FAA Operations are required to be accomplished at night, or on Saturday’s, Sunday’s or designated government holidays. Prior to any outage or shutdown, seven (7) fourteen (14) working days notification must be made to coordinate scheduling of any Work to be performed during any hours.

1.6 PERMIT AND LICENSES

A. Contractor shall secure and pay for all permits, licenses, special inspections, etc. required in the execution of the Work, whether of a permanent or temporary nature.

1.7 SCHEDULE OF VALUES

A. The successful bidder will be required to, within 20 days after the date established as the Notice to Proceed, submit to the FAA a detailed schedule of values that clearly sets forth the scheduled prices for each component of the project.

B. This Project will be required to comply with the "Buy American Act."

END OF SECTION

OPTIONS 010300 - 1

SECTION 010300 - OPTIONS

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Identification and description of work included in Options.

1.2 RELATED SECTIONS

A. Sections of Specifications identified in each Option.

1.3 PROCEDURES

A. Options will be exercised at the discretion of Owner, in no particular order.

B. Coordinate related work and modify surrounding work as required to complete the Work, including changes under each Option, when acceptance is designated in Owner-Contractor

Agreement.

1.4 OPTIONS

A. OPTION – PHASE 2, 1ST, 2ND AND 3RD FLOOR RENOVATION.

B. OPTION – ELECTROGLAZING AT STAIRWELL CURTAINWALL

1. Option Item: Install 1" Insulated Glazing (Section 088000) as described on the

Architectural Exterior Elevations and Glazing Elevations.

2. Option Item: Install Dynamic Glazing (Equal to View Glass Dynamic Glass insulating glass units - Section 088888 and Section 260924) at each Glazing Frame as follows: North

Elevation - Glazing Elevations 1, 3, 5, 6 and 7. West Elevation - Glazing Elevations 1, 3, 5, 6 and 7. The Spandrel Glazing indicated on the Glazing Elevations is NOT Dynamic

Glazing. Refer to Electrical Drawings and Specifications for Controls and Power design.

C. OPTION – INSTALL NEW PAVERS OVER A NEW WATERPROOF MEMBRANE AT THE

FIRST FLOOR PERIMETER WALKWAY.

1. Base Bid Item: Install a Traffic Coating over the existing concrete topping slab to remain.

2. Option Item: Demolish the existing concrete topping slab, existing waterproof membrane and repair the existing concrete (as required-see Unit Prices) to install a new Concrete

Pavers over a new waterproof membrane. Refer to 9/A505 for typical detail.

D. OPTION - LOADING DOCK ACCESS RAMP WATERPROOF COATING

INSTALLATION ON THE VERTICAL RAMP WALLS

OPTIONS 010300 - 2

1. Base Bid Item: Refer to 1/A107 and the referenced details and photographs. The Base Bid work includes all of the "Loading Dock Notes" and references North of the existing wall near Gridline A. The "Loading Dock Notes" #13 and #1 (just South of Gridline A) are NOT a part of the Base Bid. The balance of the referenced and associated work shown and referenced on 1/A107 ARE in the Base Bid.

2. Option Item: Refer to 1/A107 and the referenced details and photographs. The Option Item work includes all of the "Loading Dock Notes" and references South of the existing wall near Gridline A, including "Loading Dock Notes" #13 and #1 (just South of Gridline A).

Refer to 1/A108, all of the "Loading Dock Notes" ARE included in the Option Item.

PART 2 - PRODUCTS

Not used.

PART 3 - EXECUTION

Not used.

END OF SECTION

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 1

SECTION 075500 - MODIFIED BITUMEN MEMBRANE ROOFING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY:

A. This Section includes the following:

1. Preparation of Substrate to receive roofing materials

2. SBS-modified bituminous membrane roofing, cold applied system .

3. Modified bitumen flashing and elastomeric flashing system (at low height flashing areas).

4. Roof insulation.

5. Walkway pads.

6. Special Warranties

B. Products installed but not furnished under this section: Preparation of Substrate to receive roofing materials

1. Sheet metal flashing and trim.

C. RELATED SECTIONS

1. Section 061000 – Rough Carpentry

2. Section 076200 – Sheet Metal Flashing and Trim

3. Section 079200 – Joint Sealers

1.3 REFERENCE STANDARDS

A. References in these specifications to standards, test methods and codes, are implied to mean the latest edition of each such standard adopted. The following is an abbreviated list of associations, institutions, and societies which may be used as references throughout these specifications.

1. ASTM American Society for Testing and Materials,Philadelphia, PA

2. FM Factory Mutual Engineering and Research, Norwood, MA

3. NRCA National Roofing Contractors Association, Rosemont, IL

4. OSHA Occupational Safety and Health Administration, Washington, DC

5. SMACNA Sheet Metal and Air Conditioning Contractors National

AssociationChantilly, VA

6. UL Underwriters Laboratories, Northbrook, IL

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 2

1.4 DESCRIPTION OF WORK

A. The basic work descriptions required in this specification are referenced below.

1. Project Type: Tear-off and replace and new additions.

2. Deck: Concrete: Deck slope 1/8 to 1/4 inch +/- (existing deck ). 02-STB is indicated to be ¼” slope; Annex is indicated to be 1/8” slope.

3. Insulation - bottom layer: Polyisocyanurate adhered with the top layer of cover board.

4. Tapered Insulation: Polyisocyanurate, 1/4 inch min. slope (at existing roof drains, sumps, crickets, entries, sunscreens and canopies).

5. Cover Board - top layer: Glassmat reinforced gypsum panels having a thickness of

1/2", adhered to insulation in cold - applied adhesive, or semi-rigid asphaltic roof substrate board composed of a mineral fortified asphaltic core formed between two fiberglass reinforcing plies - 1/4" thick or approved equal for each warranted roofing manufacturer.

7. |Roof System - One (1) reinforcing base ply of SBS modified bitumen sheet set in cold -applied adhesive, or approved equal;One (1) cap ply of granular surfaced, fire resistant

SBS modified bitumen sheets set in cold - applied adhesive, or approved equal.

8. Flashing System: Veral Aluminum, set in cold applied adhesive, or approved equal.

9. System Classficiations: UL Class A and FM 1-90 wind resistance certification of component installation, this is not an FM insured facility.

B. The Roofing Manufacturer and primary Roofing Contractor shall provide ALL certifications, product data and other documentation indicated in this and other sections of the Project Manual to confirm compliance. Incomplete or non-conforming information is unacceptable and will be considered “non-responsive” during the evaluation of the bids.

1.5 RELATED WORK

A. Remove and dispose of the existing gutters, downspouts, metal roof edge, and expansion joint covers. Field verify all existing conditions. Remove and replace all sheet metal components associated with factory fabricated Sheet Metal Flashing Components in accordance with Roof

System Manufacturer’s Requirements. Components include, but are not limited to, expansion joints, fascias, flashing at changes in roof elevation, flashing at pipe vents and flashings at all roof penetrations.

B. Remove and dispose of existing wood nailers. Furnish and install new wood nailers to accommodate the height of the new insulation system and provide a new minimum flashing height of 8".

C. Provide and install the specified walktread in the locations designated on the roof plan.

D. Disconnect, raise or remove and reinstall all roof top equipment to facilitate proper application of the roof assembly. Install new curbs to accommodate a new minimum flashing height of 8".

Extend and reconnect all ductwork, electrical and supply connections as required to accommodate new curb height. At final inspection, verify that all connections are restored to a complete working, watertight, and safe condition, following SMACNA standards and in compliance with the National Electric Code and the International Building Code.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 3

E. Install new prefabricated curbs and equipment supports as indicated on drawingas at units that do not currently accommodate a minimum flashing height of 8".

1.6 SUBMITTALS

B. Submittals Prior to Contract Award:

1. Letter from the proposed primary roofing manufacturer confirming that the bidder is an acceptable Contractor authorized to install the proposed system.

2. Letter from the primary roofing manufacturer stating that the proposed application will comply with the manufacturer's requirements in order to qualify the project for the specified warranty, UL designations and FM ratings.

3. Variance letter from FM Global stating that all system components when installed to the following specifications as a system will receive an FM 1-90 wind uplift resistance rating.

4. Product Data sheets of components of proposed roof system to be installed which shall include cap sheet, base sheet, cold-applied adhesive, cover board, insulation board.

C. Submittal After Award of Contract and Prior to Start of Work

1. Written site/project specific Fall Hazard Prevention Plan

2. Material Submittals and MSDS for all materials to be incorporated in the work.

E. Submittals Prior to Project Close-out:

1. Certificate of Analysis from the testing laboratory of the primary roofing materials manufacturer, confirming the physical and mechanical properties of the roofing membrane components. Testing shall be in accordance with the parameters published in

ASTM D 5147 and ASTM D 6298* and indicate Quality Assurance/ Quality Control data as required to meet the specified properties. A separate Certificate Of Analysis for each production run of material shall indicate the following information:

a. Material type

b. Lot number

c. Production date

d. Dimensions and Mass (indicate the lowest values recorded during the production run);

e. Roll length

f. Roll width

g. Selvage width

h. Total thickness

i. Thickness at selvage (coating thickness)

j. Weight

k. Physical and Mechanical Properties;

l. Low temperature flexibility

m. Maximum load

n. Elongation @ 5% Maximum Load (ultimate elongation)

o. Dimensional stability

p. High Temperature Stability

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 4

q. Granule embedment

r. Resistance to thermal shock* (foil faced products)

2. Manufacturer's printed recommendations for proper maintenance of the specified roof system including inspection frequencies, penetration addition policies, temporary repairs.

Refer to Special Warranty attached to the end of this section for leak call procedures..

1.7 QUALITY ASSURANCE

A. Acceptable Products: Primary roofing products, including each type of sheet, all manufactured in the United States, shall be supplied by a single manufacturer which has been successfully producing the specified types of primary products for not less than 20 years. The primary roofing products shall have maintained a consistent composition for a minimum of five years.

The primary roofing products shall consist of a homogenous SBS modified bitumen blend throughout the membrane.

B. Product Quality Assurance Program: Primary roofing materials shall be manufactured under a quality control/quality assurance program that is monitored regularly by a third party auditor such as the ISO 9001:2000 audit process. A certificate of analysis for reporting/confirming the tested values of the actual material being supplied for the project will be required prior to project close-out.

C. Agency Approvals: The proposed roof system shall conform to the following requirements. No other testing agency approvals will be accepted. This is not an FM insured facility.

1. Underwriters Laboratories Class A acceptance of the proposed roofing system (including mopping asphalt or cold adhesive) without additional requirements for gravel or coatings.

2. Factory Mutual Approval Standard 4470 listing for the proposed membrane system. The roof membrane configuration shall be approved by FM for Class 1-SH (severe hail) exposure. The roof configuration (including fastening of base sheet or insulation) shall be approved by FM for minimum 1-90 windstorm construction. The roofing manufacturer shall certify and warrant that the components and their installation in the specified system will be done in manner which would receive an FM 1-90 or greater rating.

D. Acceptable Contractor:

1. The prime contractor’s employees shall be the installers of the primary roofing system.

Multiple source installers or subcontractors installing the specified primary roofing system are not acceptable.

2. The Contractor shall furnish with his bid, written certification from the roofing materials manufacturer that he is a certified installer of the specified roofing system and shall have a minimum of five (5) consecutive years of experience with this type of premium roofing system prior to the bid date of this project.

3. The contractor shall submit written certification from the roofing materials manufacturer that he is certified to install the specified premium roof system and to provide the specified twenty (20) year No Dollar Limit roof system warranty.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 5

4. Contractor shall submit written documentation that he has maintained an EMR less than

1.0 for the previous three (3) years (36 months) prior to the bid date of this project.

Contractor shall submit certified copies of OSHA 200/300 lost time accidents and job related injuries report for the fiscal years 2005, 2006 and 2007.

5. Contractor shall submit written confirmation that the project manager, on-site superintendent and on-site roofing foreman to be utilized on this project have successfully completed a minimum of two (2) projects totaling a minimum of 50,000 square feet with this type of specified roof system during the past five (5) year (60 month) period prior to the bid date of this project.

E. Scope of Work: The work to be performed under this specification shall include but is not limited to the following: Attend necessary job meetings and furnish competent and full time supervision, experienced roof mechanics, all materials, tools, and equipment necessary to complete, in an acceptable manner, the roof installation in accordance with this specification.

Comply with the latest written application instructions of the manufacturer of the primary roofing products. In addition, application practice shall comply with requirements and recommendations contained in the latest edition of the Handbook of Accepted Roofing

Knowledge (HARK) as published by the National Roofing Contractor's Association, amended to include the acceptance of a phased roof system installation.

F. Local Regulations: Conform to regulations of public agencies, including any specific requirements of the city and/or state of jurisdiction. All work shall comply with the currently adopted National Electric Code and the International Building Code.

G. Manufacturer Requirements: Ensure that the primary roofing materials manufacturer provides direct trained company personnel to attend necessary job meetings, perform periodic inspections, and conduct a final inspection upon completion of the project. Manufacturer’s representative shall be on site a minimum of 2 days during start up, 1 day per week during roofing operations (weather permitting) and 1 day during final inspection. Manufacturers representative shall provide a log and reports describing work observed along with time dated digital photographs of work observed to the Owner, Architect, and Roofing Consultant within 3 working days of each inspection (e-mail delivery of report is acceptable). Log shall state as a minimum, date, time of observation(s), exact location of work observed, number of workmen on site, principal items of equipment on site, description of roofing operations in process, wind direction and velocity, high and low ambient air temperature during roofing operations, and amount of precipitation received in the last 24 hours. The report shall state as a minimum, date, statement of issues encountered during roofing operations and recommended corrective measures, and whether contractor adopted corrective measures. Each report shall contain a statement that the operations observed are in compliance with the manufacturers recommended requirements or that corrective measures have been suggested and will be implemented by the contractor to be in compliance.

1.8 PRODUCT DELIVERY STORAGE AND HANDLING

A. Delivery: Deliver materials in the manufacturer's original sealed and labeled containers and in quantities required to allow continuity of application.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 6

B. Storage: Store materials out of direct exposure to the elements. Store roll goods on a clean, flat and dry surface. All material stored on the roof overnight shall be stored on pallets. Rolls of roofing must be stored on ends. Store materials on the roof in a manner so as to preclude overloading of deck and building structure. Store materials such as solvents, adhesives and asphalt cutback products away from open flames, sparks or excessive heat. Cover all material using a breathable cover such as a canvas. Polyethylene or other non-breathable plastic coverings are not acceptable.

C. Membrane Materials: Membrane materials must be stored in a warm place prior to application in order to facilitate proper installation and avoid wrinkling. Additionally rolls may be unrolled and relaxed and/or cut to shorter lengths to avoid wrinkling.

D. Handling: Handle all materials in such a manner as to preclude damage and contamination with moisture or foreign matter. Handle rolled goods to prevent damage to edges or ends.

E. Damaged Material: Any materials that are found to be damaged or stored in any manner other than stated above will be automatically rejected, removed and replaced at the Contractor's expense.

1.9 PROJECT/SITE CONDITIONS

A. Requirements Prior to Job Start

1. Notification: Give a minimum of 5 days notice to the Owner, the Owners tenant (FAA), the Architect, the Roofing Consultant and manufacturer prior to commencing any work and notify all parties on a daily basis of any change in work schedule.

2. Permits: Obtain all permits required by local agencies and pay all fees which may be required for the performance of the work. Contractor will be required to obtain open flame device permits from the fire department prior to the installation of flashings.

3. Safety: Familiarize every member of the application crew with all fire and safety regulations recommended by OSHA, NRCA and other industry or local governmental groups. Submit written Fall Hazard Prevention Plan to the Owner, Architect and Roofing

Consultant for review/comment prior to the start of work. Designate one person on each crew whose sole responsibility is to perform a daily fire watch. The designated crew member shall watch for fires or smoldering materials on all areas of roof construction.

Continue the fire watch for one hour minimum after roofing material application has been suspended for the day.

B. Environmental Requirements

1. Precipitation: Do not apply roofing materials during precipitation or in the event there is a 30% or greater probability of precipitation during application. Take adequate precautions to ensure that materials, applied roofing, and building interiors are protected from possible moisture damage or contamination.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 7

2. Temperature Restrictions - cold adhesive: At low temperatures, the specified cold adhesive becomes more viscous, making even distribution more difficult. The optimal te roll goods in a warm place immediately prior to use. Roll or broom the sheets to ensure contact with the underlying adhesive. Suspend application in situations where the adhesive cannot be kept at temperatures allowing for even distribution.

3. Wind Conditions: Do not engage in roof top operations if wind speeds of 20 mph or greater are present.

C. Protection Requirements

1. Membrane Protection: Provide protection against staining and mechanical damage for newly applied roofing and adjacent surfaces throughout this project. No wheeled traffic shall be permitted aon finished membrane surface. No traffic of any kind shall be above.

2. Limited Access: Prevent access by the public to materials, tools and equipment during the course of the project. Use of the site shall be coordinated with the owner’s tenant

(FAA).

3. Debris Removal: Debris shall be bagged and removed daily from the project site and taken to a legal dumping area authorized to receive such materials. Under no circumstances will debris be allowed to blow from the roof top or dumpsters into the surrounding area.

4. Site Condition: Complete, to the owner and the tenant’s satisfaction, all job site clean-up including building interior, exterior and landscaping where affected by the construction.

1.10 WARRANTY

A. Insulation Adhesion Warranty: Upon successful completion of the project, furnish the Owner with the Insulation Adhesive Manufacturer’s 20 year, labor and materials insulation adhesion warranty.

B. Roof Membrane Warranty: Upon successful completion of the project, and after all post installation procedures have been completed, furnish the Owner with the Manufacturer's 20 year labor and materials roof system warranty.

1. 20 Year NDL Roof System Warranty

2. Contractor shall submit Contractor’s and Roof System Manufacturer’s fully executed enclosed Warranty Agreements to the Owner within 15 days of completion of this work as part of close out documents.

3. Contractor shall execute work and pay any warranty charges as required by the Roof

System Manufacturer to furnish the Twenty (20) Year No-Dollar Limit Roof System

Warranty. These warranty requirements are made an integral provision of this Contract.

4. The Contractor shall provide and submit to Owner an original Roof System

Manufacturer’s Twenty (20) Year No-Dollar Limit System Warranty for all roof replacement areas on this project, fully executed by the Roof System Manufacturer.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 8

PART 2 - PRODUCTS

2.1 ROOFING SYSTEM ASSEMBLY / PRODUCTS

A. Rigid Roof Insulation (Flat board and tapered): Roof insulation shall be UL and FM approved.

Insulation shall be approved in writing by the insulation manufacturer for intended use and for use with the specified roof assembly. Maintain a panel size of 4 feet by 4 feet or 4 feet by 8 feet where insulation is specified to be installed. Provide panel size as recommended by the adhesive manufacturer and approved by the roofing manufacturer. Provide 2-layers of 1-1/2 “ closed cell rigid polyisocyanurate insulation and cover board at main roof adhered with cold adhesive. Insulation shall be adhered to the base sheet to comply with FMG 1-90 requirements.

Attach each layer individually with cold adhesive, not mechanically attached fasteners.

1. Polyisocyanurate: A closed cell, rigid polyisocyanurate foam core material, integrally laminated between glass fiber facers, in full compliance with ASTM C 1289, Type II, Class 1, Grade 2 - 20 PSI. Minimum total thickness of closed cell, rigid polyisocyanurate foam core insulation shall be as indicated on drawings but not less than

3” minimum ( 2-layers of 1-1/2” thick board) at System A roof areas –main roof areas and not less than 1” at System B roof areas - canopies, sunscreens and entrances.

Insulation shall be confirmed in writing as acceptable by the roof membrane manufacturer and adhesive manufacturer. Insulations shall be confirmed in writing by the roofing manufacturer as acceptable for the required 20 year warranty in section

07999.

2. Tapered insulation: Tapered insulation shall have a minimum slope of as indicated on drawings but not to be less than 1/4” per foot (tapered insulation at roof drains, sumps, crickets, entries, sunscreens and canopies).

B. Cover Board: A panel composed of gypsum based, non-structural water resistant core material integrally bonded with fiberglass mat facers on both sides and the top surface factory primed with non-asphaltic primer. Panels shall meet or exceed the requirements of

ASTM C 79 and ASTM C 137. Provide 4’ x 4’ panels having a nominal thickness of 1/2” inch. OR a semi-rigid, asphaltic roof substrate board composed of a mineral fortified asphaltic core formed between two fiberglass reinforcing plies - 1/4 inch thickness. All cover board materials must be a part of a warranted roofing system.

2.2 DESCRIPTION OF SYSTEMS

A. Roofing Membrane Assembly: A roof membrane assembly consisting of two plies of a prefabricated, reinforced, homogeneous Styrene-Butadiene-Styrene (SBS) block copolymer modified asphalt membrane, applied over a prepared substrate. Both reinforcement mats shall be impregnated/saturated and coated each side with an SBS modified bitumen blend. The roof system shall pass 500 cycles of ASTM D 5849 Resistance to Cyclic Joint Displacement interply delamination after 500 cycles. The roof system shall pass 200 cycles of ASTM D 5849 after heat conditioning performed in accordance with ASTM D 5147. The assembly shall possess waterproofing capability, such that a phased roof application, with only the modified bitumen base ply in place, can be achieved for prolonged periods of time without detriment to the watertight integrity of the entire roof system. Provide cold applied system for main roof areas and torch applied system for canopies, sunscreens and entries.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 9

B. Two different flashing systems will be required due to the flashing height limitations at some locations. The following shall be used:

1. Flashing Membrane Assembly – at typical flashing locations allowing 8” minimum flashing height: A flashing membrane assembly consisting of a prefabricated, reinforced, Styrene-Butadiene-Styrene (SBS) block copolymer modified asphalt membrane with a continuous, channel-embossed metal-foil surfacing. The finish ply shall conform to

ASTM D 6298 and the following physical and mechanical property requirements.

a. Metal-Clad Modified Bitumen Flashing Sheet

b. Veral Aluminum (or approved substitution)

c. Flashing Reinforcing Ply - (Same as roof system base ply)

2. Elastomeric flashing system for low height flashing conditions less than 8” but at least 4” height (Catalyzed Acrylic Resin Flashing System): A specialty flashing system consisting of a liquid-applied, fully reinforced, multi-component acrylic membrane installed over a prepared or primed substrate. The flashing system consists of a catalyzed polymethyl methacrylate primer, basecoat and topcoat, combined with a non-woven polyester fleece.

The use of the specialty flashing system shall be specifically approved in advance by the membrane manufacturer for each application. System conponetns include:

a. Reinforced PMMA Membrane/Flashing System Components for Parapro 123

Flashing System

b. Catalyst: A reactive agent used to induce curing of polymethylmethacrylate

(PMMA) resins.

c. Resin for Flashing Applications: A multi-component, flexible, polymethylmethacrylate (PMMA) based resin combined with a thixotropic agent for use in combination with fleece fabric to form a monolithic, reinforced flashing membrane.

d. Resin for Field Membrane Construction: A multi-component, flexible, polymethylmethacrylate (PMMA) based resin for use in combination with fleece fabric to form a monolithic, reinforced roofing membrane.

e. Flashing Reinforcement: A non-woven, 110 g/m², needle-punched polyester fabric reinforcement as supplied by the membrane system manufacturer.

f. Elastomeric flashing system by Siplast; Irving, TX or approved equal.

1. Cold applied system for main roof areas:

a. Modified Bitumen Base (interply) and Stripping Ply shall meet or exceed the following minimum standards:

1) Thickness (avg): 91 mils (ASTM D 5147)

2) Thickness (min): 87 mils (ASTM D 5147)

3) Weight (min per 100 ft² of coverage): 62 lb (3.0 kg/m²)

5) Low temperature flexibility @ -13ºF (-25ºC): Pass (ASTM D 5147)

6) Maximum Load (avg) @ 73ºF (23ºC): 30 lbf/inch (ASTM D 5147)

7) Maximum Load (avg) @ 0ºF (-18ºC): 70 lbf/inch (ASTM D 5147)

8) Elongation @ 5% Maximum Load (avg.) @ 73ºF (23ºC): 45% (ASTM D

5147)

9) Dimensional Stability (max): 0.1% (ASTM D 5147)

10) High Temperature Stability (min): 250ºF (121ºC) (ASTM D 5147)

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 10

11) Approvals: UL Class listed, FM Approved (products shall bear seals of approval)

12) Reinforcement: fiberglass mat or other meeting the performance and dimensional stability criteria

b. Granular Surfaced Modified Bitumen Finish Ply shall meet or exceed the following minimum standards:

1) Thickness (avg): 130 mils (ASTM D 5147)

2) Thickness at selvage (coating thickness) (avg): 98 mils (ASTM D 5147)

3) Thickness at selvage (coating thickness) (min): 94 mils (ASTM D 5147)

4) Weight (min per 100 ft² of coverage): 90 lb (4.4 kg/m²)

6) Low temperature flexibility @ -13º F (-25º C): Pass (ASTM D 5147)

7) Maximum Load (avg) @ 73ºF (23ºC): 30 lbf/inch (ASTM D 5147)

8) Maximum Load (avg) @ 0ºF (-18ºC): 75 lbf/inch (ASTM D 5147)

9) Elongation @ 5% Maximum Load (avg.) @ 73ºF (23ºC): 50% (ASTM D

5147)

10) Dimensional Stability (max): 0.1% (ASTM D 5147)

11) High Temperature Stability (min): 250ºF (121º C) (ASTM D 5147)

12) Granule Embedment (max loss): 2.0 grams per sample (ASTM D 5147)

13) Approvals: UL Class listed, FM Approved (products shall bear seals of approval)

14) Reinforcement: fiberglass mat or other meeting the performance and dimensional stability criteria

15) Surfacing: ceramic granules; granule color: white

2. Flashings:

a. Two (2) ply Flashing Membrane Assembly: A flashing membrane assembly consisting of one (1) ply of interply and one (1) ply of finish ply indicated above.

b. Elastomeric specialty flashing system for low height flashing conditions

(Catalyzed Acrylic Resin Flashing System): A system consisting of a liquid-applied, fully reinforced, multi-component acrylic membrane installed over a prepared or primed substrate as described above.

D. Roofing Accessories

1. Roofing Insulation and Cover Board Adhesives

a. Insulation and Cover Board Adhesive: A single component, moisture cured, low-rise polyurethane foam adhesive, dispensed from a portable, pre-pressurized container used to adhere tapered insulation panels to the substrate.

1) Insta-Stik Professional Roofing Adhesive by Dow Chemical Corporation, Joilet, IL

2) Weather-Tite pourable foam insulation adhesive by Millenium Adhesive

Products, Inc., Chagrin Falls, Ohio

3) Olybond Adhesive Fastener by Olympic Manufacturing Group, Agawam, Massachusetts

4) Soprema - Duotack 365 - two-component foam insulation adhesive.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 11

b. Membrane Cold Adhesive: A blend of special adhesive asphalts and safe, high-flash, quick drying solvents that meets or exceeds ASTM D 4479, Type II requirements.

2. Bituminous Cutback Materials

a. Primer: A high flash, quick drying, asphalt solvent blend which meets or exceeds

ASTM D 41 requirements.

b. Mastics: An asphalt cutback mastic, reinforced with non-asbestos fibers, used as a base for setting metal flanges conforming to ASTM D 4586, Type II requirements.

3. Ceramic Granules: No. 11 grade specification ceramic granules of color scheme matching the granule surfacing of the finish ply.

4. Sealant: A moisture-curing, non-slump elastomeric sealant designed for roofing applications. The sealant shall be approved by the roof membrane manufacturer for use in conjunction with the roof membrane materials.

5. Sealant Tape: Extruded Butyl Tape that is extruded onto silicone release paper that provides superior adhesion and a watertight seal. Must meet AAMA 807.I-85 requirements.

a. Primer Equal to E-Z Trim Grey Butyl Tape manufactured by GSSI Sealants, or approved substitution.

E. Walktread: A prefabricated, puncture resistant polyester core reinforced, polymer modified bitumen sheet material topped with a ceramic-coated granule wearing surface.

1. Thickness: 0.217 in (5.5 mm)

2. Weight: 1.8 lb/ft² (8.8 kg/m²)

3. Width: 30 in (76.2 cm)

Asphalt Encapsulated Compressible Aggregate Filler: Waterless asphalt encapsulated compressible aggregate as manufactured is approved to achieve positive slope in “ponding” areas. No standing water allowed on roof.

4. Bulk density: Min 8lb/ft cubed

5. Compressed density after 33% compaction: Min 12 lb/ft cubed

6. Compressive strength after 33% compaction: Min 12psi

Sealant Pans and Sealant Pan Fillers: At the end of the project, provide the Owner with an activated 10-year warranty for the installation of the sealant pans.

7. A single component, cold applied, moisture-cure compound of pouring consistency designed for use as a sealant pan filler.

1-Part Pourable Sealer by Chem Link; Kalamazoo, MI, or equivalent

8. A two component, cold applied, moisture-cure, urethane based compound of pouring consistency designed for use as sealant pan filler.

Pro Pack Pourable Sealer by Chem Link; Kalamazoo, MI, or equivalent

9. Precast forms shall be 2" high round curbs composed of either black structural urethane or gray, polymer cement with an inside diameter of 7.5" or 5" and 6" and 12" straight curbs.

ChemCurb exterior forms, rings, straights or corners, or equivalent

10. M-1 Structural Sealant for bonding, sealing and/or priming of the ChemCurb System.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 12

11. Fabric reinforced resinous multi-component Flashing System installed in accordance with the manufacturers instructions is also an acceptable roof penetration waterproofing/flashing system if warranty requirements indicated in paragraph 2.02 C.9 above can be met or exceeded.

Perlite Cant Strips: A cant strip composed of expanded volcanic minerals combined with waterproofing binders.

12. Factory Fabricated units with true 45 degree angle between vertical and horizontal surfaces.

13. UL Flame Spread Rating of 25 or less.

14. The cant shall have nominal 4 inch rise and 4 inch run dimensions.

15. The top surface shall be pre-treated with an asphalt based coating.

Tapered Insulation – Drain Crickets and Sadles:

16. Polyisocyanurate, Perlite or Glass-Fiber insulation board

a. Maximum board size: 2’ x 4’

b. Tapered Thickness: Install tapered boards designed to provide a minimum of 1/4“ per foot slope to drain at crickets.

c. Provided by the roof manufacturer to insure warranty and wind uplift resistance compliance requirements

PART 3 - EXECUTION

3.1 FIELD QUALITY CONTROL

A. Pre-Work Conference: Conduct a pre-work conference to include the Owner, Tenant (FAA), Architect, Roofing Consultant, Roofing Contractor and Roofing Materials Manufacturer's

Representative prior to application of roofing.

B. Contractor to accurately coordinate all roofing work and flashing for proper slope and draingaw to all roof drains and overflow scuppers. Contractor to perform elvation survey on roof to establish finish elevation of roof drainage to accomplish s drainable roof. No standing water allowed on roof.

C. Sequencing of Work: Work shall be scheduled in such a manner to prevent working over newly installed work. Each section shall be completed prior to moving to the next section. Staging of materials, access to the roof and scheduling of the access to the roof shall be coordinated with the Owner and Tenant. At no time shall the Contractor enter or access the roof from within the building.

D. During Installation: Contractor to provide the roofing foreman with a copy of the approved shop drawings, drawings and specifications to be available at the job site at all times. The presence of drawings and specifications and an inspector shall not relieve the Contractor of strict compliance with the manufacturer's specifications, detail drawings, and/or approved material requirements.

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 13

E. Final Inspection: Conduct a post-work conference to include the Owner, Tenant, Architect, Roofing Consultant, Roofing Contractor and Roofing Materials Manufacturer's Representative prior to acceptance of roofing. A punch list of items required for completion shall be compiled by the Contractor and the Manufacturer's Representative prior to the Architect and Roofing

Consultant’s Final Inspection. Reference Section 01770 Closeout Procedures.

3.2 PREPARATION

A. General: Sweep or vacuum all surfaces, removing all loose debris and foreign substances prior to commencement of roofing. Use of blowers will not be permitted.

B. Remove All Existing:

1. Roof membrane

2. Rigid Insulation

3. Asphalt

4. Base flashings

5. Edge metal

6. Flanged metal flashings

7. Cants, wood blocking

8. Non functional penetrations/curbs

9. Gutters and Downspouts

10. Sealant pans

11. Metal trim, counterflashing

12. Expansion Joints

C. Damaged and/or Deteriorated Deck: Inspect decking, make necessary repairs or replace sections of deck that cannot be repaired. Do not begin new roofing installation until deck deficiencies, in the proposed area of new work, are remedied to the satisfaction of the roofing manufacturer.

D. Existing Curbs: Existing curbs indicated to be repolaced on the drawings shall be replaced with new prefabricated curbs that accommodate a minimum height of 8 inches.

E. Deck Penetrations: Verify that work penetrating the roof deck, or which may otherwise affect the roofing application, has been properly completed

3.3 SUBSTRATE REQUIREMENTS

A. Roof Decks: Fill openings in roof deck from removed equipment: Remove unused equipment and curbs and install a ¼” prime painted steel plate or matching deck type and guage that is 12” larger than the opening (6” each side) and attached with metal screws. Install new rigid roof insulation, cover board and membrane roofing over opening. See details.

3.4 SUBSTRATE PREPARATION

A. Wood Nailers: Install all wood nailers in accordance with the guidelines set forth in latest edition of Factory Mutual Loss Prevention Bulletin 1-49 (and 1-28).

MODIFIED BITUMEN MEMBRANE ROOFING 075500 - 14

B. Base Layer of Insulation: Over the entire deck, install one thick layer of polyisocyanurate insulation loose laid. Minimum total thickness of closed cell, rigid polyisocyanurate foam core insulation shall be as indicated on drawings. Provide 2-layers of 1-1/2 “ closed cell rigid polyisocyanurate insulation and cover board at main roof adhered with cold adhesive. Insulation shall be adhered to the base sheet to comply with FMG 1-90 requirements. Attach each layer individually with cold adhesive, not mechanically attached fasteners.

C. Tapered Insulation (at roof drains, sumps, crickets, entries, sunscreens and canopies).):

1. Install tapered insulation following detailed elevations and slopes in accordance with approved shop drawings.

2. Adhere tapered insulation panels to the base insulation with the end joints offset. Edges of the panels shall be in moderate contact without forcing applied in strict accordance with the insulation manufacturer's requirements.

D. Cover Board: Attach gypsum panels through the insulation board and metal deck with end joints offset from each other and from the joints in the insulation board below. Edges of the panels shall be in moderate contact without forcing and shall be applied in strict accordance with the gypsum panel manufacturer's recommendations.

E. Attachment: Attach base layer of insulation, tapered insulation and cover board as a single unit with cold adhesive, not mechanically fastened. Insulation shall be adhered to the base sheet to comply with FMG 1-90 requirements. Attach each layer individually with cold adhesive, not mechanically attached fasteners.

3.5 ROOF MEMBRANE INSTALLATION - GENERAL

A. Membrane Application: Apply…