10R0052 Specs AM4.pdf

Solicitation # W91238-10-R-0052

Addendum for Fresno Readiness Center Task Order

Drawing Sheet A1.1

Add a general note to sheet A1.1 that reads “Remove all floor tile, baseboard and mastic from floor areas containing 12”x12” floor tile. Replace with 12”x12”x1/8” vinyl tile with 6” vinyl baseboard – use Armstrong Standard Excelon as basis of design.”

Replace existing sheet note 12 on sheet A1.1 that reads “Remove (e) stair tile and mastic.

Install (n) vinyl 12”x12”x1/8” thk. Provide border strip on bottom step and top landing to indicate landings.” with new sheet note 12 reading

“Remove (e) stair tile, baseboard and mastic. Install (n) vinyl 12”x12”x1/8” thick tile, baseboard and recessed vinyl nosings. Provide border strip on bottom step and top landing to indicate landings that are distinctively marked with stripes that shall be visible in descent of the stair and shall have a slip resistant surface, marking stripes shall have a width of at least 1 inch but not more than 2 inches”.

Drawing sheet A1.2

Substitute new sheet A1.2 for old sheet A1.2.

Drawing sheet A2.4

Substitute new sheet A2.4 for old Sheet A2.4.

Drawing Sheet A2.6

Replace existing sheet note 2 on sheet A2.6 with new sheet note 2 reading “Remove existing floor tile and replace with new 12”x12”x1/8” vinyl tile.”

Drawing Sheets E1.3 and E1.4 add note “Provide additional ballast for all existing fluorescent light fixtures shown on Drawings E1.3 and E1.4 which require double switching”

W91238-10-R-0052 Amendment 0004

SECTION 4

TECHNICAL SPECIFICATIONS

06E9045

READINESS CENTER REPAIRS

CALIFORNIA NATIONAL GUARD FACILITY

LOCATED AT

5565 EAST AIRWAYS BLVD.

FRESNO, CALIFORNIA

SECTION TITLE NUMBER OF PAGES

DIVISION 1

01016 UNIT PRICE BIDS 1

01600 MATERIAL AND EQUIPMENT 4

DIVISION 2

02082 ASBESTOS ABATEMENT 13

REPORT ASBESTOS ANALYSIS 11

DIVISION 6

06110 CARPENTRY 9

DIVISION 7

07536 SBS MODIFIED BITUMEN ROOFING 16

07500 HIGH IMPACT FLUID APPLIED ROOFING

SYSTEM 8

07565 PREPARATION FOR RE-ROOFING 4

07631 GUTTERS AND DOWNSPOUTS 7

DIVISION 9

09250 GYPSUM BOARD 9

09511 ACOUSTICAL CEILINGS 6

09650 RESILIANT FLOORING 5

09910 PAINTING 6

DIVISION 10

10800 TOILET AND SHOWER ACCESSORIES 6

DIVISION 15

15010 MECHANICAL REQUIREMENTS 5

15140 HANGERS AND SUPPORTS 4

15420 PLUMBING PIPING 7

15781 PACKAGED GAS-ELECTRIC AIR

CONDITIONING UNITS 9

15783 DIRECT GAS-FIRED MAKE-UP AIR UNIT 7

15800 MECHANICAL VENTILATION 5

15890 DUCTWORK 4

15900 MECHANICAL CONTROLS 4

DIVISION 16

16111 CONDUIT 5

16123 BUILDING WIRE AND CABLE 4

16130 BOXES 2

16141 WIRING DEVICES 3

16160 CABINET AND ENCLOSURE 3

16170 GROUNDING AND BONDING 3

16190 SUPPORTING DEVICES 2

16195 ELECTRICAL IDENTIFICATION 2

16510 LIGHTING FIXTURES 6

DRAWINGS 34

SECTION 07500

HIGH IMPACT FLUID APPLIED ROOFING SYSTEM

1.0 GENERAL REQUIREMENTS

The successful application of a polyurethane foam roofing system is dependent upon the experience, technology and common sense of the designer, as well as the experience, integrity and ability of the applicator/contractor.

1.1.� Terms and Conditions

1.1.1 The roofing contractor is the prime

contractor. All subcontractors shall be identified and approved at the time the proposal is submitted. Manufacturer's installation procedures shall be the basis for accepting or rejecting actual workmanship.

1.1.2 Bidders shall be pre-qualified as follows:

a. All bidders shall be contractors who have specifically performed the application of similar sprayed-in-place urethane coating roof systems. Such bidders shall have performed the installation of these systems for not less than ten years under the same company name. Each bidder shall have performed at least fifteen applications of similar size and type totaling no less than one million square feet. Bidders shall submit with the bid a list of projects including date of completion and contact information for verification.

b. The Contractor shall be a current member in good standing with the Spray Polyurethane Foam Alliance and Accreditation Program and shall have successfully completed Accreditation Course 201, Project Management. Completion of Course 101, The Fundamentals of Spray Polyurethane Foam and Coating Systems is the minimum acceptable status in the accreditation program by the supervisor(s) and spray mechanic(s) assigned to the project. A copy of the SPFA membership and the 101 and 201 certifications shall be submitted with the bid.

c. Each bidder shall submit a copy of the proposed ten plus ten year guarantee from the manufacturer along with the bid.

d. The contractor shall carry a minimum of $2,000,000 in general liability insurance on a continuing basis. Verification of insurance shall be submitted at the time of bid in the form of a sample insurance certificate.

e. The contractor shall submit with the bid a current license status printout from the Contractors State License Board at http://www.cslb.ca.gov to demonstrate that the license is in good standing.

f. Certification of the Manufacturer: Submit, on corporate letterhead, a letter from both the foam and coating manufacturers stating that the Contractor is a qualified applicator of these products.

g. The contractor shall cooperate as required in performance of the specified inspecting and testing.

h. Failure of the bidder to submit items ‘a’ through ‘f’ in its entirety with the bid will be deemed non-responsive.

1.1.3 Manufacturers shall be pre-qualified as

follows:

a. The manufacturer of the foam and coating shall have been in business for a minimum of ten years and shall have a minimum of 3,000,000 square feet of roofing system installed.

b. The manufacturer shall maintain a minimum of $5,000,000 of product liability insurance on a continuing basis. Verification of insurance shall be submitted at the time of bid in the form of a sample insurance certificate.

c. The foam and coating shall be listed as Class A over existing non-combustible roofing systems by Underwriters Laboratories per UL 790 at the thicknesses intended for use. Submit UL listing, confirming the above, with the bid.

W91238-10-R-0052 http://www.cslb.ca.gov/�

d. Failure of the bidder to submit items ‘a’ through ‘c’ in their entirety will be deemed non-responsive.

1.2 Submittals

1.2.1 Manufacturer's Literature: Submit two

copies of the manufacturer's data sheets regarding specifications, application information and safety information, and safety instructions on each product proposed for use.

1.2.2 Samples: Submit two samples of the proposed

coating system applied on urethane foam. Samples shall be two inches by four inches in size.

1.2.3 Certification of the Manufacturer: Submit, on corporate letterhead, a letter from the roofing material manufacturer stating that the applicator of these products is qualified by the manufacturer.

1.2.4 Similar jobs: The applicator shall submit a

list of five similar sized projects which the contractor has completed in the past five years.

The contractor shall have installed a minimum of 250,000 square feet of the materials proposed for use.

1.2.5 Submit a copy of the manufacturer's sample

warranty.

1.2.6 UL follow up service: The foam and coating

shall be registered under the UL follow up service and bear UL labels.

2.0 MATERIALS AND EQUIPMENT

2.1 Primer: Primer shall be single-component, water-based

primer, black in color or prior approved equal.

2.2 Polyurethane Foam: Polyurethane foam shall be a two-

component polyurethane foam system formulated for use through airless equipment. The product shall meet or exceed the following typical physical properties listed for Ultra-Thane 230 as manufactured by General Coatings, Inc. or prior approved equal:

PROPERTIES VALUE TEST METHOD

Density (sprayed-in-place) 3.0 pcf ASTM D-1622

K Factor Aged 0.17 ASTM C-518

Compressive Strength 50 – 60 psi

ASTM D-1621

Tensile Strength 90 psi ASTM D-1623

Shear Strength 50 – 60 psi

ASTM C-273

Closed Cell Content 95% min. ASTM D-1940

Water Vapor Transmission 1.8 perms ASTM C-355

Water Absorption .017 ASTM D-2842

Flame Spread (ASTM E84) 75 max* ASTM E-84/UL

Roof Deck Classification:

Combustible Deck Class B

ASTM E-84/UL

Non-combustible Deck Class A

ASTM E-84/UL

*This numerical flame spread rating is not intended to reflect hazards presented by this or any other material under actual fire conditions.

2.3 Polyurea Elastomer: Polyurea elastomer shall be a two

component, 100% solids coating formulated for application through heated plural component pumping systems. The product shall meet or exceed the following typical physical properties listed for Ultra-Tuff 2800 as manufactured by General Coatings, Inc. or approved equal:

PROPERTIES VALUE TEST METHOD

Solids by Volume 100% ASTM D-2697

Solids by Weight 100% ASTM D-2369

Hardness Shore D 55 ASTM D-2240

Tensile Strength 2900 psi ASTM D-412

Elongation 430% ASTM D-412

Tear Resistance 420 pli ASTM D-624

Water Absorption <1.5% ASTM D-471

Flash Point >300°F ASTM D-56

Low Temperature Flexibility Pass

180° Bend @ - 40°F

ASTM D-2136

High Temperature >300°F Continuous

Flexibility ASTM D-573

Severe Hail Test Pass FM-4470

2.4 Aliphatic Urethane Surfacing: The top coat shall be

Ultra-Shield 3000, a high build, two component, aliphatic polyurethane elastomer as manufactured by General Coatings, Inc. or prior approved equal, specifically formulated for use as a finish coat over Ultra-Tuff 2800 polyurea membrane roofing system. The coating shall be certified and registered with the Cool Roof Rating Council. Additionally, the coating shall be EPA energy-star rated.

PROPERTIES VALUE TEST METHOD

Solids by Volume 75% ASTM D-2697

Solids by Weight 82% ASTM D-2697

Elongation 450 ± 100 ASTM D-412

Tensile Strength 2200 ±

100 ASTM D-412

Permanent Set at Break

9.0% ASTM D-412

Water Absorption 1.5% ASTM D-471

Duometer Hardness:

Shore A

90 ASTM D-2240

Permeability 0.45 Perms ASTM E-96(B)

Low Temperature Flexibility Pass ASTM D-1737

Solar Reflectance 0.84

Thermal Emitance 0.90

2.5 Equipment: Equipment for spraying polyurethane foam

and polyurea shall be manufactured specifically for the application of these products. The equipment shall be airless, capable of maintaining a 1:1 volume ratio and have primary and hose heaters. The equipment for the application of the acrylic elastomeric shall be an airless type as recommended by the coating manufacturer.

3.0 SURFACE PREPARATION

3.1 Surface Condition: The surface shall be free from

solvent, grease, dust, sediment, dirt, and sticky mastic. All existing rock roofs shall have loose, non-embedded gravel thoroughly removed and cleaned by vacuum, power broom vacuum methods. All extraneous equipment and equipment supports shall be removed from the deck. The existing roofing system shall be power washed as necessary and inspected by the manufacturer’s representative prior to the installation of any primer or new roofing materials.

3.2 All roof mounted equipment such as air conditioning

units, exhaust fans, etc. shall have sufficient clearance beneath them to allow for the proper application of the new roofing system. In the event of insufficient clearance, new curbs shall be constructed of the correct height and size to allow for the proper application of the new roofing system.

The new curbs shall be fitted with a 24 gauge galvanized sheet metal cover with a minimum of a 2 inch 60 degree perimeter flange to counter flash the foam.

3.3 All equipment or areas not intended to receive foam or

coating shall be masked and protected from overspray.

3.4 New 24-gauge galvanized interlocking sheet metal shall

be installed at all perimeter roof edges with a 1-inch rise foam stop and a 4-inch face with a ½-inch hem.

3.5 Install new 24-gauge galvanized sheet metal flashing

where the foam cannot be tapered and terminated properly at all air conditioning units, wall flashings, curbs, etc as necessary.

4.0 APPLICATION OF URETHANE FOAM

4.1 Environmental Conditions

4.1.1 Wind Velocity shall not exceed 12 miles per hour.

4.1.2 Application of spray foam shall not proceed

if ambient temperature is less than 40 deg. F, or if the substrate temperature is less than 50 deg.

F.

4.1.3 Spray foam is not to be applied over moist

substrates or where rain or inclement weather is imminent.

4.1.4 The construction of enclosures and wind

screens will be mandatory to prevent the release of over spray from damaging aircraft, equipment, vehicles, etc.

4.2 Spray Application

4.2.1 The polyurethane foam shall be applied in

minimum ½-inch passes to achieve a thickness of 1-inch.

4.2.2 Only as much area as can be brought to final

thickness should be attempted in a day. Phasing of the foam is strictly forbidden. (Phasing is foam application on one day and coming back the next day or thereafter and applying another layer of foam. This procedure often leads to the development of blisters.) If additional foam must be added after the 24 hour period, the existing foam must be primed and a minimum ½-inch of foam in a single pass can be applied.

4.2.3 The foam shall be free from bumps, pinholes

and ridges. The surface shall exhibit a smooth or orange peel surface texture. Popcorn or tree bark surfaces shall be deemed unacceptable.

4.2.4 The foam thickness shall be checked every

500 square feet prior to coating application.

4.2.5 The polyurethane foam shall be applied in

such a manner to provide for a positive slope to drain.

4.2.6 The Contractor shall maintain a laser level

on the jobsite at all times. The newly applied polyurethane foam shall be surveyed with a laser level to ensure proper slope to drain and absence of ponding.

5.0 APPLICATION OF FLUID APPLIED PROTECTIVE COATING

5.1 General: Sprayed polyurethane foam must be protected

from ultraviolet light in order to avoid degradation of the polymer. Coating also protects the foam from ponding water and adverse weather conditions.

Coatings must be specifically formulated for use over urethane foams.

5.2 Base Coat Application: Ultra-Tuff 2800 polyurea shall

be uniformly applied to the polyurethane foam in one or more uniform passes to achieve a total dry film thickness of 45 mils.

5.3 Aliphatic Top Coating: The base coat must be top

coated with aliphatic urethane coating within a maximum of 24 hours after the base coat membrane application. The Ultra-Shield 3000 aliphatic urethane surfacing shall be applied at the rate of 1½ gallons per square to achieve a total dry film thickness of 15 mils. Foot traffic should not be allowed on the newly installed aliphatic urethane surfacing until it has been allowed to cure for a minimum of 36 hours.

6.0 WARRANTY AND CERTIFICATION

The foam and coating manufacturer shall issue a fifteen year non-depreciating manufacturer's warranty.

7.0 INSPECTION

A representative from the coating manufacturer shall inspect the roof after completion to assure that the detail work at the protrusions, drains, parapets and edges has been completed in conformance with good practice. The inspector shall also check the thickness of the coating with an optical comparator.

7.0 CLEAN UP

Upon completion of all work covered in this specification, the contractor shall remove all equipment, material and debris, leaving the area in an undamaged and acceptable condition.

END OF SECTION