10R0052 Fresno Amend 0003.pdf

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

01700 CONTRACT CLOSEOUT 3

DIVISION 2

02082 ASBESTOS ABATEMENT 13

REPORT ASBESTOS ANALYSIS 11

DIVISION 6

06110 CARPENTRY 9

DIVISION 7

07536 SBS MODIFIED BITUMEN ROOFING 16

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

W91238-10-R-0052 Amendment 0003

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 07536

SBS MODIFIED BITUMEN ROOFING

I PART 1 GENERAL

I.1 SUMMARY OF WORK

A. Contractor to supply the necessary labor, materials and equipment to provide a Class B, “Cool Roof” roofing system at the roof area as specified herein.

Work shall include, but is not limited to, the following:

1. Remove and dispose of existing roofing system.

Repair approximately 200 S.F. of damaged wood deck as directed by COR. Actual quantities may vary and payment shall be made for the actual square feet of repaired deck, based on square foot costs submitted in the bid, adjusted as per Section 01016.

2. Install a new 2-ply SBS modified bitumen roof system with mineral surfaced cap sheet, torch applied, over 1/2 inch dens-deck board (primed with asphalt primer), adhesive fastened over 1- 1/2 inch polyisocyanurate, mechanically fastened over the existing wood roof deck. New roofing membrane shall then be coated with a 2 part acrylic coating (32 Mil. DFT min.) conforming to “Cool Roof” program. 20 year NDL warranty shall cover complete assembly, including insulation, insulation adherent, and roofing. Coating materials shall have 7 year minimum warranty.

4. Install SBS modified base flashing systems.

Install new vent flues, vent flashings and type “B” vent caps. Vent caps shall be installed at height required by 2007 CMC. Contractor shall modify/install vents, ducts and equipment curbs to maintain a minimum 8" curb height above finished roof surface. Install tapered insulation crickets at all roof curbs.

5. Contractor shall modify or install all utilities and ducting as required to perform work described in this section and on project drawings.

I.2 PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

A. Section 06110 – Carpentry.

B. Section 07620 - Sheet Metal Flashing and Trim.

I.3 RELATED SECTIONS

A. Section 06110 – Carpentry.

B. Section 07565 - Preparation for Re-Roofing.

C. Section 07620 - Sheet Metal Flashing and Trim: New reglet and flashing.

I.4 REFERENCES

A. ASTM C165 - Test Method for Measuring Compressive

Properties of Thermal Insulations.

B. ASTM C177 - Test Method for Steady-State Thermal

Transmission Properties by Means of the Guarded Hot Plate.

C. ASTM C203 - Test Methods for Breaking Load and

Flexural Properties of Block-Type Thermal Insulation.

D. ASTM D1622 – Density, Overall.

E. ASTM D41 - Asphalt Primer.

F. ASTM D4586 Type 1 – SBS Asphalt Roof Cement

(Asbestos Free).

G. ASTM D5147-91 - Testing Modified Bituminous Sheet

Material.

H. FM (Factory Mutual) - Roof Assembly Classifications.

I. NRCA (National Roofing Contractors Association) -

Roofing and Waterproofing Manual.

J. UL (Underwriters Laboratories, Inc.) - Fire Hazard

Classifications.

K. California Building Code, 2007 Edition.

I.5 SUBMITTALS

A. Submit product data for all materials used in the work for this project under provisions of Section 01015 and 01300.

B. Shop Drawings: Indicate setting plan for densdeck board and polyisocyanurate insulation, mechanical fastener type and layout, joint and termination detail conditions, conditions of interface with vents and other materials, curb modification details, flashing details and deck repair.

C. Product Data: Provide data indicating membrane and bitumen materials, base flashing materials, walk pads, polyisocyanurate insulation, protective covering and decking. Submit one 6" x 6" sample of roof SBS cap sheet, SBS interply, polyisocyanurate insulation, densdeck and SBS base flashing materials to Engineer. Submit one (1) of each type of mechanical fastener to Engineer.

D. Manufacturer's Installation Instructions: Install roofing materials in accordance with manufacturer’s instructions. See item III.6.E.2 below.

E. Manufacturer's Certificate: Certify that Products meet or exceed all ASTM, UL, FM and government requirements specified in Items I.4 and I.8.

F. Manufacturer's Field Reports: Submit under provisions of Section 01300. Indicate procedures to be followed.

G. Manufacturer's Warranty: Submit copy of proposed warranty in accordance with Paragraph I.13.

I.6 QUALITY ASSURANCE

A. Maintain copies of each document on site, in accordance with Section 01700.

B. Perform Work in accordance with NRCA Roofing and

Waterproofing Manual, SMACNA Sheet Metal Fabrication Manual, manufacturer's instructions, the drawings and specifications contained herein. Where the cited references contain more than one detail for a specific purpose, the most stringent condition shall govern.

C. Roof Coating Manufacturer’s representative and ECI shall jointly inspect the finished coating system to resolve any deficiency issues prior to project close out.

I.7 QUALIFICATIONS

A. Contractor/Applicator: Company specializing in performing the work of this section with minimum five years documented experience and two years documented experience with specified materials.

Contractor/Applicator shall provide a certificate issued by the roofing system manufacturer stating that the contractor/applicator has successfully installed a minimum of 500 squares of the proposed manufacturer's system and that the same 500 squares are currently under warranty issued by the roofing system manufacturer. Certification shall be presented with the contractor’s bid package. Failure to provide this certification at the time of the bid opening may be grounds for bid rejection.

1. Manufacturer shall meet with designated COR/ECI representatives prior to the start of the job to inspect the site and clarify any questions that might arise. Provide a work-in-progress inspection at beginning of work, 50%, and at completion of the work. Promptly conduct a final inspection, to certify that materials installed comply in all respects with the requirements of this specification; and were installed in strict accordance with manufacturer’s current requirements for the specified system.

I.8 REGULATORY REQUIREMENTS

A. Manufacturer shall submit proof of the following tests and agency requirements:

1. UL: Class B Fire Hazard Classification.

Material shall pass this test without the use of a mineral surface covering.

2. FM: Roof Insulation Assembly Classification, wind uplift requirement of I90, in accordance with FM Construction Bulletin 1-28.

I.9 PRE-INSTALLATION CONFERENCE

A. Convene one week prior to commencing work of this section.

B. Review requirements for preparation and installation procedures, coordinating and scheduling required with related work and conditions which could possibly interfere with successful performance of the work.

C. Require Manufacturer's Technical Representative to participate in the conference.

I.10 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, protect and handle products in accordance with provisions of Section 01600.

B. Roofing material shall be delivered to job-site in new, dry, manufacturers original unopened containers with seals and labels intact, clearly showing catalog number, product description approved inspection agency label, where and by whom manufactured and in quantities sufficient to assure continuous work.

C. Store rolled goods on end on pallet supports. Do not double stack membrane. Maintain aisle space between stacks to facilitate fire suppression.

Discard any flattened roll goods.

D. Do not overload structure with building materials.

Do not store materials on finished roof membrane.

E. Protect insulation from direct exposure to sunlight and moisture.

F. Assure that materials are kept clean, and away from excessive heat, cold and moisture; do not remove labels or tear off protective covering until ready for application and inspected by ECI representative;

store in an enclosed area where temperature is above 50 degrees and below 90 degrees Fahrenheit, securely tied with rope.

Material shall not be stored directly on the ground or any improved surface.

I.11 ENVIRONMENTAL REQUIREMENTS

A. Do not apply roofing membrane during unsuitable weather when ambient temperature is below 50 degrees F.

B. Maintain roofing felts above

40 degrees F. for 24 hours prior to application.

C. Do not apply roofing membrane to damp or frozen deck surface or when precipitation is present (rain, mist, dew, frost and or snow).

D. Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed the same day.

I.12 COORDINATION

A. Coordinate the work of this section with installation of associated counter flashings installed by other sections as the work proceeds.

B. Work shall not begin until other trade work required ahead of membrane application is completed.

I.13 WARRANTY

A. Provide three year applicators performance warranty, which shall cover workmanship and materials and repair or replacement of same at no cost to the Government. Blistering and buckling shall be covered by this warranty.

B. Provide 20 year manufacturers Non-prorated, No

Dollar Limit (NDL), No Penal Sum (NPS) warranty.

Warranty shall cover leaks due to defective material and poor workmanship, and damage to roofing system resulting from failure of roof membrane system to provide a water tight system.

C. Warranty shall be submitted under provisions of

Section 01700.

I.14 SAFETY REQUIREMENTS

A. Contractor shall comply with all building and safety codes and shall report any non compliance of these specifications or manufactured installation procedures to roof manufacturer's representative prior to beginning work.

B. Safety standards set forth by the Occupational

Safety and Health Administration (OSHA) shall be maintained and followed by the Contractor, Sub Contractor(s) and work crews at all times.

C. Contractor shall comply with the California Fire

Code, 2007 Edition. There shall be at least four fire extinguishers of a minimum 20 BC classification, located within the work area.

II PART 2 PRODUCTS

II.1 MEMBRANE MATERIAL

A. Manufacturers – Dual reinforced (polyester and fiberglass) membrane materials installed (Torched) over Dens-Deck board over insulation:

1. MB Technology -I2T-FGFT160CWH

2. Other approved system manufacturers are: Ecology

Roof Systems and Garland. Alternate systems must be approved by the Military Department. The assembly (base and cap) shall weigh a minimum weight of 210 lbs. / sq. and a minimum thickness of 288 mils.

B. Roofing Membrane System: SBS interply, SBS mineral surface cap sheet, edge and base flashings shall be produced by the same manufacturer. All components shall be SBS Modified meeting the following characteristics:

1. SBS Torch Interply Sheet: M.B. Technology

FT160CSA.

a. Thickness: 140 mils min. ± 10%

b. Average Weight: 100 lbs/sq min.

c. Reinforcement: Dual Reinforced.

2. SBS Mineral Surfaced Cap & Flashing Sheet: M.B.

Technology FGFT160CWH.

a. Thickness: 170 mils min. ± 10%

b. Reinforcement: Dual Reinforced.

c. Average Weight: 110 lbs/sq min.

d. Top Surface: Mineral Granules.

C. Roof Coating: Roofing Material Manufacturer’s recommended coating that offers 7 year minimum warranty.

1. Manufacturers: Complying with California “cool-roof” criteria. Materials shall be labeled and EPA/DOE Energy Star Product. Karnak or Approved Equal.

2. Primer: #220AF emulsion roof coating or approved equal conforming to ASTM D-1227 Type II, Class 1;

SS-R-1781 (except asbestos free) and MIL-R-3472A (except asbestos free).

3. Finish Coating: #501 elasto-brite co-polymer elastomeric emulsion exterior protective coating or approved equal.

a. Color: White

b. Solid by Weight: 59%

c. Solids by Volume: 50%

d. Hardness Shore A: 70

e. Elongation: 300%

f. Tensile Strength: 350 psi

g. Permeability: 1.5

II.2 BITUMINOUS MATERIALS

A. Asphalt Primer: ASTM D41.

B. Modified Asphalt Roof Cement: ASTM D4586 (Type I

Asbestos Free) - Elastomeric mastic. Acceptable manufacturers - Gibson Homan, Pro's Choice 1010 or approved equal.

II.3 INSULATION / DENS-DECK

A. Manufacturers:

1. Apache

2. Firestone

3. Manville

4. Georgia Pacific.

B. Polyisocyanurate Insulation – Uniform 1-1/2” thickness. Insulation is authorized as per following characteristics:

1. Insulation shall be ASTM D1622, ASTM D1621, ASTM

E84, ASTM E96, ASTM C209 and ASTM D2126.

a. Thickness 1.5 inch or tapered

b. Density 2.0 lb/cu ft

c. Size 24 x 48 inches min.

d. Compressive Strength 20 psi minimum per ASTM D1621

e. Flame Spread 25 or less

f. Smoke Developed 55 - 215

C. Dens-Deck

Gypsum board is authorized as per following characteristics:

1. Gypsum Board shall be ASTM E84 and ASTM E136.

a. Thickness 1/2 inch

b. Density 52.8 lb/cu ft

c. Size 48 x 96 inches min.

II.4 CANTS

Perlite Cant and Tapered Edge Strips: ASTM C 728-91, Asphalt impregnated perlite. Cants shall be preformed to 45 degree angle with a 4" vertical leg, and 4" horizontal leg, unless noted otherwise.

II.5 ROOF WALKPADS

Walkway Pads: Malarkey (recycled materials), 36" x 48" with 1/2" minimum thickness, compatible with mineral surfaced cap sheet (depending on roof system) of the same material identified in Paragraph II.2 of this section.

II.6 ACCESSORIES

A. Metal discs: Shall be flat discs or caps of zinc coated sheet metal not lighter than 28 gauge and not less than 1-3/8 inches in diameter. Discs shall be formed to prevent dishing. Bell or cup-shaped caps are not acceptable. Minimum withdraw resistance of nails or fasteners shall be as required to obtain a Factory Mutual I90 wind uplift rating.

B. Plumbing Vents and Penetration Flashing: Shall meet or exceed ASTM-B29, 4 lb. sheet lead.

C. Base Flashing Nails: Nails shall be of galvanized steel, except that hard copper nails shall be used with copper: aluminum or stainless steel nails shall be used with stainless steel. Nails and fasteners shall be flush driven through flat metal discs of not less than 1-3/8 inch diameter. Metal discs may be omitted when one piece composite nails or fasteners with heads not less than one inch diameter are used. Unless otherwise specified, minimum withdraw resistance of nails or approved fasteners shall be 40 pounds each in the specific decks, when driven.

D. Caulking Sealant: ASTM C-920, shall consist of a single component, high performance, elastomeric sealant. Acceptable manufacturers:

1. Flexible Seal by AC Products, Inc., Placentia, CA.

2. Sonolastic NP 1 by Sonneborn Building Products, Minneapolis, MN.

3. Other products must be approved in writing by the Project Inspector prior to application.

E. Parapet Wrap: W.R. Grace, Bituthene or equal as approved by roofing system manufacturer.

III PART 3 EXECUTION

III.1 EXAMINATION

A. Verify that surfaces and site conditions are ready to receive work.

B. Verify deck is supported and secured.

C. Verify deck is clean and smooth, flat, free of depressions, waves, or projections, properly sloped towards gutters and ready for installation of roof system. If depressions are discovered, it will be the responsibility of the Contractor to add roofing interplies, as required, to provide proper drainage.

D. Verify deck surfaces are dry and free of debris.

E. Confirm dry deck with moisture meter at 19% moisture maximum.

F. Verify adjacent concrete roof members do not vary more than 1/4 inch in height. Verify grout keys are filled flush.

G. Verify adjacent decks do not vary more than 1/4".

Add taper board to adjust variances and provide for smooth deck transition.

H. Verify roof openings, curbs, pipes, conduit, sleeves, ducts, vents and flues through roof deck are solidly set, modified as required and new cant strips, pressure treated wood nailers and reglets are in place.

I. Verify that wood deck has been repaired in accordance with Section 06110.

J. Verify that roof decking has been inspected in accordance with Section 07565.

III.2 WORKMANSHIP

A. All roofing work shall be accomplished with a foreman and laborers who are thoroughly skilled in the application of specified materials; with all workmanship done in such a manner as to fulfill the requirements of the drawings and specifications.

B. Any specific directions furnished by manufacturer, in writing, on company letterhead, and as published in the manufacturer's manual for built-up roofing systems, regarding the application of roofing materials shall be faithfully followed.

C. All deviations from the manufacturer's published instructions shall be secured in writing on company letterhead from the manufacturer's representative prior to beginning work.

D. The Contractor shall supervise installation of, and be responsible for, seeing that roof mechanical and electrical equipment, and other work is properly set and roof membrane is not damaged; make roof and flashing repairs as necessary; advise Government Inspector, General Contractor, and/or Contracting Officer's Representative in writing of all potential leaks as may be caused by other trades.

E. The Contractor shall maintain a competent foreman, English speaking, to continuously supervise the work, with authority to discard unsuitable materials and remove unsatisfactory workmen from the project.

III.3 ASPHALT HANDLING, HEATING AND APPLICATION

Cutting or alterations of primer and sealants will not be permitted.

III.4 PREPARATION FOR POLYISOCYANURATE INSULATION

APPLICATION

Verify wood deck is clean and ready to accept prior to fastening insulation.

III.5 INSULATION AND DENS-DECK APPLICATION

A. Lay insulation boards with edges in moderate contact without forcing. Cut board to fit neatly to perimeter blocking and around penetrations through roof.

B. Dens-deck shall be secured to insulation with spray foam adhesive (Insta-Stik).

C. Polyisocyanurate insulation in contact with wood decks shall be mechanically fastened with one layer of 1/2 inch dens-deck roofing board adhered over the insulation with foam adhesive (INSTA-STIK). Dens-deck and insulation shall have all joints staggered.

Foam adhesive, fasteners and fastening pattern shall be submitted for review and must meet FM I-90.

D. Do not apply more dens-deck and insulation than can be covered with membrane in same day.

III.6 SBS INTERPLY MEMBRANE

A. Install only as much roofing material as can be completed and covered in accordance with the requirements of this specification and the roofing manufacturer’s requirements in one (1) day.

B. Do not allow traffic, stacked roofing materials or any equipment on completed roofing surfaces without adequate protective walk pads or minimum 1/2 inch plywood.

C. Prior to applying any membrane, the Contractor and his Foreman shall review these specifications and the manufacturer's technical manual with the Manufacturer's Technical Representative to make certain that all aspects of the membrane system application are understood. Certify this requirement to the COR in writing.

D. Application of membrane system shall proceed in strict accordance with specifications, detailed drawings and manufacturer’s technical manual.

E. Smooth Surfaced Interply – Torch Application:

1. Torch weld SBS FT160CSA interply membrane to asphalt primed dens-deck roofing board in half width starter strips along the roof edge with subsequent course applied in full width rolls.

Torch weld allowing 3.5 inch side laps and 6 inch on end laps. End laps shall be staggered with a minimum spacing of 36 inches. Apply to produce a 1/8 inch to ¼ inch outflow of bitumen at all seams. Areas with less than 1/8 inch outflow will be checked with a trowel, heat applied between laps and properly sealed.

2. Turn sheet up a minimum of 2" above cants at all vertical surfaces.

3. Apply membrane smooth, free from air pockets, fish mouths, wrinkles, or tears. Ensure full bond of membrane to substrate.

4. Insure that all fish mouths are cut and objects causing separation between plies are removed.

Do not attempt to walk down fish mouths. Patch areas if the cut is made after the interply has set up.

5. All membranes shall be cut to conform to the nailer spacing. Nail the end lap across the width of the sheet, with the first nail spaced ¾” from the leading edge of the sheet, and the remaining nails spaced approximately 8.5” o.c.

The nails shall be staggered across the width of the nailer to reduce the risk of the sheet tearing along the nail line. Nails must have an integral 1” diameter cap. Where capped nails are not used, fasteners must be driven through caps having a 1” diameter.

F. SBS Reinforcing Strip Application (Base Flashings)

1. The SBS reinforcing strip shall be cut into manageable lengths prior to application. Lay the material out on the roof and allow it to relax and flatten.

2. Torch weld SBS 160 mil reinforcing strip to modified interply and primed vertical surfaces.

Reinforcing strip shall extend from 4 inches above the cant to 4 inches onto field membrane.

3. Course shall be laid with a minimum of 4" end lap.

4. Bitumen run out at side laps shall extend 1/8 inch to ¼ inch onto interply surface, beyond salvage edge.

G. Mineral Surfaced Cap Sheet Application Torch Applied

1. The mineral surfaced SBS cap sheet shall be cut into manageable lengths prior to application.

Lay the material out on the roof and allow it to totally relax and flatten

2. The mineral surfaced membrane shall be applied via torching. The first layer at edges shall be full width. To begin, first preheat the salvage edge of the previously laid membrane. When torching the roll itself, use a steady torching technique, keeping the torch moving to bring the entire surface to the proper temperature prior to bonding.

3. Allow laps to relax as long as possible before fusing. Side laps shall be interply heat fused prior to interply fusing of the end lap of the same sheet. Pressure shall be applied on the top of the lap to ensure solid contact. All laps shall be fused before leaving job for the day.

4. Bitumen run out at side laps shall extend 1/8" to 1/4" onto mineral surface, beyond salvage edge and covered with mineral granules as recommended by material manufacturer.

5. End laps of cap membrane shall be staggered a minimum of 36".

6. Extend mineral surfaced cap membrane a minimum of 4" above all cants. Fuse membrane to face of cant and underlying SBS reinforcement interply.

Apply torch to underside of cap membrane only and press into place.

7. Apply membrane smooth, free from air pockets, fish mouths, wrinkles, or tears. Ensure full bond of membrane to substrate.

8. Install two plies membrane and bitumen glaze coat for cut-off at end of day's operation.

Glaze cut off plies exposed at end of working day. Remove cut-off before resuming roofing.

9. Insure that all fish mouths are cut and objects causing separation between plies are removed.

Do not attempt to walk down fish mouths. Patch areas if the cut is made after the interply mopping has set up.

10. Seal edges and ends permanently waterproof.

H. If moisture penetrates roofing membrane at any location, all wet material will be replaced by contractor at no expense to the Government.

I. All Finished work of others which is damaged in the execution of work under this section shall be replaced or restored to the original condition by Contractor at the Contractor's expense.

J. Install walk pads after roof surface is coated.

Coat walk pads, set joints 6" maximum and 2" minimum distance apart to allow proper roof drainage.

Install walk pads at locations as detailed in project drawings.

III.7 FLASHINGS AND ACCESSORIES

A. Install required cant strips before applying base sheet, field membrane and flashings.

B. Coordinate installation of roof drains and related flashings with roofing and deck repair operations.

C. Base flashings shall be composed of 1 layer SBS mineral surfaced cap sheet over 1 layer 160 mil SBS interply membrane reinforcing strip as shown on

D. Install base flashings at all roof wall junctures, projections and curb per manufacturers requirements.

Special care shall be taken to generously preheat the surface to which the flashing is being applied prior to heating the bottom of flashing membranes.

E. When flashing is installed over a porous surface, apply a coating of asphalt primer at a minimum rate of 1/2 to 3/4 gal. per 100 S.F. of area and allow to completely dry.

F. All metal flanges to be stripped in with 160 Mil.

SBS interply sheet and mineral surfaced cap membrane shall be coated (both sides) with asphalt primer and allowed to dry thoroughly, 24 hours minimum.

G. Mineral surfaced flashing membrane shall be unrolled and cut to desired width and maximum length of 10 feet.

H. The flashing must not remain open at the end of the work day.

I. The contractor and construction inspector shall thoroughly inspect the completed flashing system at the end of each day's work.

J. Mechanically fasten top edge of base flashings with approved fasteners per roofing manufacturer's specifications and project drawing details.

K. The Contractor shall insure that a uniform slope is provided at all roof areas so that water will drain and will not pond at building perimeter. If, upon flood testing, water does pond at any location on this roof area, the roofing shall be removed, re-sloped and repaired at the Contractor's expense.

L. Install 4 lb. lead sleeves on all vent pipe/conduit roof penetrations. Flanges shall extend a minimum of 6 inches in all directions on top of the new interply membrane, and be stripped into the roof membrane with SBS base flashings. The top of the sleeve shall be cut even with the top of the vent and shall have preformed sleeve cap installed.

Pipes and conduit shall have a draw-band seal and rain diverter utilized if the vent pipe extension is too high. Installation procedures shall comply with NRCA, or SMACNA standard details and specifications.

M. Install roofing system manufacturer’s approved parapet wrap material over wood nailer and top of base flashings. Wrap shall extend 1-1/2” minimum below wood/concrete juncture.

III.8 Coating Application

A. Surface must be clean and dry prior to application of coating. Sweep and wash area to remove all dust, dirt and residue. Coatings Manufacturer’s representative shall be present at time of application.

B. The first coat shall be back rolled. Each coat shall be slightly tinted off color from the subsequent coats to allow visual inspection for holidays.

III.9 FIELD QUALITY CONTROL

A. Field inspection will be performed under provisions of Section 01400, and manufacturers requirements.

B. All mineral surfaced cap membrane shall be carefully inspected for construction damage and imperfect heat fusion. Any holes or tears shall be patched with the appropriate mineral surfaced cap membrane. The patch must extend a minimum of 4" in all directions from the edges of the tear or puncture.

C. All mineral cap membrane edges exposed at waste stacks, vent stacks and other similar assemblies shall be caulked with a smooth continuous bead of approved sealant.

D. Where free water is discovered between the plies, the affected area shall be removed and rebuilt in dry conditions. Where insulation is found to be wet, the insulation, and 12 inch perimeter, shall be removed and new built-up roofing and insulation shall be installed at no additional cost to the Government.

E. Deficiencies identified during final inspection shall be corrected within five (5) working days, and will be re-inspected at Final Inspection.

F. All heat weld assembly installations shall be inspected prior to leaving the site to assure that no smoldering or combustible materials are ignited through the night.

G. Require site attendance of roofing and insulation material manufacturers as required by progress scheduling during installation of the Work.

Notification to all concerned parties must be received not less than 48 hours prior to required attendance.

H. No coating shall be applied when roof surface has any moisture occurring in area of coating installation.

I. No coating shall be applied when temperatures are under 55 degrees Fahrenheit.

III.10 CLEANING

A. Remove bituminous markings from finished surfaces.

B. Repair, replace and repaint any items or finishes defaced or disfigured by work under this contract.

C. In areas where finished surfaces are soiled by bitumen or any other source of soiling caused by work of this section, consult bitumen manufacturer for cleaning advice and conform to their documented instructions.

III.11 DEBRIS DISPOSAL

A. Contractor shall make his own arrangements for disposal of debris or other waste material away from job site at his own expense, and assume total responsibility for proper disposal of all materials in accordance with local, State and Federal regulations.

B. Debris from project will be removed daily, and at no time allowed to block any thoroughfare. Premises shall be cleaned to satisfaction of the COR.

III.12 PROTECTION OF FINISHED WORK

Where traffic must continue over finished roof membrane, protect surfaces with temporary walk pads or 1/2" plywood sheeting per manufacturer's requirements.

END OF SECTION

SECTION 07565

PREPARATION FOR RE-ROOFING

I PART 1 GENERAL

I.1 SECTION INCLUDES

A. Roof surface examination.

B. Materials removal.

C. Temporary protection.

D. Field quality control.

E. Schedules.

I.2 RELATED SECTIONS

A. Section 06110 - Carpentry.

B. Section 07536 – Modified Bitumen Roofing.

C. Section 09910 - Painting.

I.3 DESCRIPTION

A. Low Roof Areas: Remove existing roofing materials down to existing deck(s). Remove existing foam from parapet walls. Remove existing perimeter flashings, base flashings, counterflashings, vent stack flashings, vapor retarder, roof mounted mechanical equipment, and other items as identified on project drawings and as required for re-roofing operations.

B. High Roof Area: Remove existing copings and parapet flashings. Remove all blisters from foam roof system.

C. All Metal Siding / Mansard Areas: Replace all fasteners with similar neoprene washered fasteners.

D. Perform deck repair at damaged roof areas and locations where existing equipment has been removed.

Modify all metal siding and soffit as required to install new base flashings. Install new drains, overflows and drainage piping.

I.4 QUALIFICATIONS

Materials Removal Firm: Company specializing in performing the work of this Section with minimum three years documented experience.

Provide plan showing proposed tear off and reroof sequence.

I.6 PRE-INSTALLATION CONFERENCE

The prime contractor and all subcontractors shall attend pre-construction conference scheduled by COR and as identified in Section 07536.

I.7 ENVIRONMENTAL REQUIREMENTS

A. Do not

B. Maintain continuous temporary protection prior to and during installation of new roofing system.

remove existing roofing membrane when weather conditions threaten the integrity of the building contents or intended continued occupancy.

C. Dispose of all tear off materials in accordance with local, State and Federal regulations.

I.8 SCHEDULING

A. Schedule work under the provisions of Section 01300.

B. Schedule work to coincide with commencement of installation of new roofing system and work of other Sections.

C. Remove only existing roofing membrane materials that can be replaced with new membrane materials the same day.

D. Perform all work that could interfere with roofing installation prior to removal of roofing membrane.

I.9 COORDINATION

Coordinate roofing work with affected mechanical and electrical trades.

II PART 2 PRODUCTS

MATERIALS

Temporary Protection: Sheet polyethylene or fiber reinforced plastic tarpaulins; provide adequate weights to retain sheeting in position.

III PART 3 EXECUTION

III.1 EXAMINATION

Verify that existing roof surface is clean and ready for work of Section 07536.

III.2 MATERIALS REMOVAL

A. Remove metal counter flashings to permit access to top edge of base flashings.

B. Remove perimeter and base flashings, copings, skirt flashings, vent flashings and flashings around roof penetrations. Temporarily remove mechanical equipment (to be reinstalled after roof installation) to facilitate reroofing. Remove all miscellaneous wires (telephone, cable or television) from roof surface.

C. Remove vapor retarder, sheathing paper, and/or underlayment.

D. Repair existing deck surfaces to provide smooth and continuous working surface to receive new roof system.

E. Modify existing curbs as required to provide 8” minimum clearance above finished roof surface. All new curbs shall meet 8” clearance above roof surface.

F. Install wood nailers around perimeter of all roof penetrations requiring galvanized flashings, on top of parapets at locations shown on project drawings and all other locations as required by roof membrane manufacturer.

G. Prior to installing the roofing material, remove from decks all debris, nails, sharp objects, dirt, moisture, petrochemical materials or projections which could in any way damage the insulation and roofing system. Clean sweep roof, remove refuse and dispose of it off site.

III.3 TEMPORARY PROTECTION

A. Provide temporary protective sheeting over uncovered deck surfaces.

B. Turn sheeting up and over curbing. Retain sheeting in position with weights or temporary fasteners.

C. Provide for surface drainage from sheeting to existing drainage facilities.

D. Do not permit traffic over unprotected or repaired deck surface.

E. Provide tarpaulin protection of building contents from silting inside of building. Cover any equipment or materials that could be in direct line of dripping of water or silt from roofing operations above.

III.4 FIELD QUALITY CONTROL

A. Field inspection will be performed under provisions of Section 01400. Deck inspection will identify the exact condition of existing roof deck and any repair requirements. Areas repaired will be dimensionally identified on as-built plans

B.A.Contractor shall notify the designated Project Manager, 48 hours in advance of roofing material removal for individual roof sections, as the work progresses, to arrange for roof deck inspections.

Inspections of the existing roof decks will be performed jointly by the Contractor, COR, and the Construction Inspector.

C.B.Examination: Following material removal, the roof decking will be examined for defects such as portions of old membrane remaining, excessive surface roughness, rust conditions, structurally unsound materials, and any other adverse condition that will effect execution of the work, quality, and warranty of the new roof membranes. Verify all flues will extend 24 inches above finished roof surface.

D.C.Any new roofing materials placed prior to the inspection as identified in Items III.4 B and C above, will be completely removed at the Contractor's expense. All such materials removed, shall not be reused in the work without the express written approval of the Inspector.

III.5 SCHEDULES

Salvageable Items: Any items to be salvaged from project site shall be designated by COR. COR will instruct contractor where salvageable items will be stored on site.

END OF SECTION

SECTION 09511

SUSPENDED ACOUSTIC CEILINGS

I PART 1 GENERAL

I.1 SECTION INCLUDES

A. Acoustic tile and panel.

I.2 REFERENCES

A. ASTM C635 - Manufacture, Performance, and Testing of Metal

Suspension Systems for Acoustical Tile and Lay-in Panel Ceilings.

B ASTM E580 - Application of Ceiling Suspension Systems for

Acoustical Tile and Lay-in Panels in Areas Requiring Seismic Restraint.

C. ASTM E1264 - Classification of Acoustical Ceiling

Products.

D. UL - Fire Resistance Directory.

I.3 SYSTEMS DESCRIPTION

A. 2’ x 4’ Panel System: Rigidly secure acoustic ceiling suspension system including integral mechanical and electrical components with maximum deflection of 1:360.

B. 1’ x 1’ Tile System: Rigidly secure acoustic ceiling tile zee bars and “T” splines to existing wood deck and existing tile suspension system.

I.4 SUBMITTALS FOR REVIEW

A. Shop Drawings: Indicate grid layout and related dimensioning, junctions with other work or ceiling finishes, interrelation of mechanical and electrical items related to system.

B. Product Data: Provide data on acoustic units.

C. Samples: Submit one samples, full size, illustrating material and finish of acoustic units.

I.5 SUBMITTALS FOR INFORMATION

A. Manufacturer's Installation Instructions: Indicate special procedures and perimeter conditions requiring special attention.

I.6 QUALITY ASSURANCE

A. Acoustic Unit Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum five years documented experience.

I.7 REGULATORY REQUIREMENTS

Conform to 2007 C.B.C. for combustibility requirements for materials.

I.8 ENVIRONMENTAL REQUIREMENTS

A. Section 01600 - Material and Equipment: Environmental conditions affecting products on site.

B. Maintain uniform temperature of minimum 50 degrees F, and maximum humidity of 40 percent prior to, during, and after acoustic unit installation.

I.9 PROJECT COORDINATION

Install suspension systems and units after work of Section

09650 is completed.

I.10 EXTRA MATERIALS

A. Section 01700 - Contract Close-out.

B. Provide 30 of extra tile to C.O.R.

II PART 2 PRODUCTS

II.1 ACOUSTIC UNIT MATERIALS

A. Manufacturers:

1. Armstrong – Fine Fissured - 592.

2. Celotex.

3. USG Interiors.

4. Substitutions: Refer to Section 01600 - Material and

Equipment.

B. Acoustic Tile: ASTM E1264, ASTM E84 Flame Spread Index 25 or less, Smoke Development Index 50 or less conforming to the following:

1. Size: 12 x 12 inches.

2. Thickness: 3/4 inches.

3. Composition: Mineral Fiber.

4. Light Reflectance: 75 percent.

5. NRC Range: 50 to 60.

6. STC Range: 35 to 39.

7. Edge: Square.

8. Surface Color: White.

9. Surface Finish: Fissured, Square Edged, Kerfed and Back-Cut.

C. Acoustic Panels: ASTM E1264, ASTM E84 Flame Spread Index

25 or less, Smoke Development Index 50 or less conforming to the following:

1. Size: 24 x 48 inches.

2. Thickness: 5/8 inches.

3. Composition: Mineral Fiber.

4. Light Reflectance: 75 percent.

5. NRC Range: 50 to 60.

6. STC Range: 35 to 39.

7. Edge: Square.

8. Surface Color: White.

9. Surface Finish: Perforated and/or Non-directional.

10. Sag Resistant – HumiGuard Plus or equal.

III PART 3 EXECUTION

III.1 EXAMINATION

B. Verify that hangers are installed in accordance with 2007

C.B.C. Section 803.9.1.1.

III.2 INSTALLATION - LAY-IN GRID SUSPENSION SYSTEM

A. Install light fixture boxes above light fixtures in accordance with UL assembly requirements and light fixture ventilation requirements.

III.3 REPAIR EXISTING CONCEALED GRID SUSPENSION SYSTEM

A. Install new suspension system components, to conform with

ASTM C-636 where existing suspension system is missing.

B. Install panels after major above ceiling or roof work is complete. Coordinate the location of hangers with other work.

C. Hang suspension system independent of walls, columns, ducts, pipes and conduit. Where carrying members are spliced, avoid visible displacement of face plane of adjacent members.

D. Where equipment prevent the regular spacing of hangers, reinforce the nearest affected hangers and related carrying channels to span the extra distance.

III.4 INSTALLATION - ACOUSTIC UNITS

A. Install acoustic units in accordance with manufacturer's instructions.

B. Fit acoustic units in place, free from damaged edges or other defects detrimental to appearance and function.

C. Install units after above ceiling work is complete.

D. Install acoustic units level, in uniform plane, and free from twist, warp, and dents.

E. Cutting Acoustic Units:

Cut square edges to field cut units.

III.5 ERECTION TOLERANCES

A. Section 01400 - Quality Control: Tolerances.

B. Maximum Variation from Flat and Level Surface: 1/8” in 10 feet.

SECTION 09650

RESILIENT FLOORING

PART 1 GENERAL

1.1 SUMMARY

Provide and install new Armstrong 12”x 12”x 1/8”Standard Excelon, Imperial Texture VCT or Equivalent & new four inch (6”) cove base using vinyl tile adhesive as recommended by manufacturer. The colors of tile and cove base shall be approved by Facilities Engineering before time of installation.

1.2 REFERENCES

A. ASTM International:

1. ASTM E84 - Standard Test Method for Surface

Burning Characteristics of Building Materials.

2. ASTM E648 - Standard Test Method for Critical

Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source.

3. ASTM E662 - Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials.

4. ASTM F1066 - Standard Specification for Vinyl Composition Floor Tile.

5. ASTM F1303 - Standard Specification for Sheet Vinyl Floor Covering with Backing.

6. ASTM F1344 - Standard Specification for Rubber Floor Tile.

7. ASTM F1861 - Standard Specification for Resilient Wall Base.

B. Federal Specification Unit:

1. FS L-F-475 - Floor Covering Vinyl, Surface (Tile and Roll), with Backing.

2. FS RR-T-650 - Treads, Metallic and Nonmetallic, Skid Resistant.

C. National Fire Protection Association: NFPA 253 - Standard Method of Test for Critical Radiant Flux for Floor Covering Systems Using a Radiant Heat Energy Source.

1.3 SUBMITTALS

A. Shop Drawings: Indicate seaming plan, custom patterns and inlay designs.

B. Product Data: Submit data describing physical and performance characteristics; including sizes, patterns and colors available; and installation instructions.

C. Samples: Submit manufacturer's complete set of color samples for initial selection.

1.4 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Section 01600 - Product Requirements: Product storage and handling requirements.

B.A. Protect roll materials from damage by storing on end.

1.6 ENVIRONMENTAL REQUIREMENTS

A. Section 01600 - Product Requirements.

B.A. Maintain temperature in storage area between 55 degrees F and 90 degrees F

C.B. Store materials for not less than 48 hours prior to installation in area of installation at temperature of 70 degrees F to achieve temperature stability.

Thereafter, maintain conditions above 55 degrees F.

1.7 EXTRA MATERIALS

A. Section 01700 - Execution Requirements: Spare parts and maintenance products.

B.A. Furnish 100 sq ft of flooring, of each type and color specified, and 2 gallons of finishing material used.

PART 2 PRODUCTS

2.1 TILE FLOORING

A. Vinyl Tile: ASTM F1066

1. Size: 12 x 12 inch.

2. Thickness: 0.100 inch.

3. Pattern: Through pattern.

B. Base: ASTM F1861 Vinyl; top set coved:

1. Height: 6 inch minimum.

2. Thickness 0.125 inch thick.

3. Finish: Satin.

4. Length: Roll.

5. Accessories: Premolded end stops.

2.2 ACCESSORIES

A. Subfloor Filler: Premix latex; type recommended by adhesive material manufacturer.

B. Primers and Adhesives: Waterproof; types recommended by flooring manufacturer.

PART 3 EXECUTION

3.1 EXAMINATION

A. Section 01015 - Project Management and Coordination:

Verification of existing conditions before starting Work.

B. Verify concrete floors are dry to maximum moisture content as recommended by manufacturer, and exhibit negative alkalinity, carbonization, and dusting.

C. Verify floor and lower wall surfaces are free of substances capable of impairing adhesion of new adhesive and finish materials.

3.2 PREPARATION

A. Remove sub-floor ridges and bumps. Fill minor low spots, cracks, joints, holes, and other defects with sub-floor filler to achieve smooth, flat, hard surface.

B. Prohibit traffic until filler is cured.

C. Clean substrate.

D. Apply primer as required to prevent "bleed-thru" or interference with adhesion by substances cannot be removed.

3.3 EXISTING WORK

A. Extend existing resilient flooring installations using materials and methods compatible with existing installations.

3.4 INSTALLATION - TILE FLOORING

A. Mix tile from container to ensure shade variations are consistent when tile is placed.

B. Lay flooring with joints and seams parallel to building lines to produce symmetrical tile pattern.

C. Install tile using a Jack-On-Jack pattern. Allow minimum 1/2 full size tile width at room or area perimeter.

D. Scribe flooring to walls, columns, cabinets, floor outlets, and other appurtenances to produce tight joints.

E. Where floor finishes are different on opposite sides of door, terminate flooring under centerline of door.

F. Install edge strips at unprotected or exposed edges, where flooring terminates, and where indicated. Secure metal strips before installation of flooring with stainless steel screws.

G. Install flooring in recessed floor access covers.

Maintain floor pattern.

H. At movable partitions, install flooring under partitions without interrupting floor pattern.

I. Install feature strips and floor markings where indicated. Fit joints tightly.

3.5 INSTALLATION - BASE

A. Fit joints tightly and make vertical. Maintain minimum dimension of 18 inches between joints.

B. Miter internal corners. At external corners, 'V' cut back of base strip to 2/3 of its thickness and fold. At exposed ends, use premolded units.

C. Install base on solid backing. Bond tightly to wall and floor surfaces.

D. Scribe and fit to door frames and other interruptions.

3.6 PROTECTION OF INSTALLED CONSTRUCTION

A. Section 01700 - Execution Requirements: Protecting installed construction.

B. Prohibit traffic on resilient flooring for 48 hours after installation.

END OF SECTION

SECTION 09910

PAINTING MAINTENANCE

I PART 1 GENERAL

I.1 WORK INCLUDED

A. Work includes, but is not necessarily limited to:

1. Paint all new exposed surfaces, except those specified not to be painted hereunder, or finished by others.

B. Repaint previously painted surfaces damaged, defaced or altered under work of this project, including wall penetrations where drain and overflow piping have been installed.

C. Surface treatment includes surface preparation, priming and coats of paint as specified in this Section.

Number of coats specified is a minimum. Uniform coverage is required, free from defects and blemishes.

I.2 SECTION INCLUDES

A. Submittals.

B. Quality Assurance.

C. Material and Equipment.

D. Painting Maintenance.

E. Preparation.

F. Application.

I.3 RELATED SECTIONS

A. Section 06110 - Carpentry.

B. Section 07565 - Preparation for Re-roofing.

I.4 DO NOT PAINT

A. Surfaces concealed within soffit and furred spaces.

B. All Stainless Steel surfaces.

A. Material List. Submit copies of complete material list and color samples together with statement of intended use for each material in accordance with Section 01300.

Do not apply material without written approval from the Engineer or ECI.

B. Samples. Submit sample draw sheets for each color proposed for use to the Engineer.

I.6 QUALITY ASSURANCE

A. Regulations. Materials and processes shall comply with California Air Quality Management standards and all applicable local restrictions

B. Qualification of manufacturer. Products used in the work of this Section shall be produced by manufacturers regularly engaged in manufacture of similar items and with a history of successful production of architectural coatings.

C. Manufacturers Standards. Comply with manufacturer's written recommendations and instructions.

I.7 DELIVERY AND STORAGE

Deliver, store and protect products in accordance with Section 01600.

II PART 2 PRODUCTS

II.1 QUALITY

A. Provide the best quality grade of specified coating types as regularly produced by recognized paint manufacturers.

B. Materials not bearing manufacturer's identification as best quality products are not acceptable.

II.2 DURABILITY

Paints and finishes shall be durable, washable and shall stand up under washing required to remove pencil marks, ink, ordinary soil, etc., without showing discoloration, loss of gloss, staining, peeling or other damage.

II.3 PAINT COLOR

Paint color shall match existing building wall color scheme where demo has occurred.

II.4 PAINTING SCHEDULE

References to specific manufacturers are intended to establish a standard. V.O.C. content shall be less than the maximum specified by the local air quality control district.

II.5 COATING SYSTEM

A. Paint surfaces as defined below:

1. Exterior Concrete and wood Surfaces:

a. Prime Coat: ICI Prep & Prime Hydrosealer 6001 or equal.

b. Second Coat: ICI Dulux Professional 2406 or equal.

c. Finish Coat: ICI Dulux Professional 2406 or equal.

2. Interior Concrete Surfaces:

a. Prime Coat: ICI 3030 Prep & Prime Bond Prep or equivalent primer which is compatible with existing painting substrate.

b. Second Coat: Dulux Professional 1406 or equal.

c. Finish Coat: Dulux Professional 1406 or equal.

3. Interior Gyp Board Surfaces:

a. Prime Coat: ICI 1000 Prep & Prime Hi-Hide Wall or equal.

b. Second Coat: Dulux Professional 1406 or equal.

c. Finish Coat: Dulux Professional 1406 or equal.

3. Other Surfaces:

a. Contractor shall provide product data for materials prior to application.

II.6 Above manufacturer product numbers are intended for contractor's general reference. Product number update will be the contractor's responsibility. Contractor shall use the latest product number edition. Submit most current product data in accordance with Section 01300.

III.1 GENERAL

Comply with this Section and manufacturer's specifications.

III.2 PROTECTION

A. The Contractor shall provide protective devices, such as tarpaulins, screens or covers, as necessary to prevent damage to the work and to other property or persons from all cleaning and painting operations.

B. Paint or paint stains which result in an unsightly appearance on surfaces not designated to be painted shall be removed or obliterated by the Contractor at his expense and to the satisfaction of the COR.

III.3 SURFACE PREPARATION

A. Existing surfaces. Thoroughly clean all grease, dirt, dust or other foreign matter from existing surfaces requiring paint.