2005 Roof Specifications.pdf

VA BOSTON HEALTHCARE SYSTEM

BROCKTON, MASSACHUSETTS

TECHNICAL SPECIFICATIONS

ROOF REPLACEMENT & RELATED WORK

AT

BUILDINGS 1 AND 20

July 2008

ENGINEERING SERVICES

BROCKTON, MASSACHUSETTS

TABLE OF CONTENTS

TECHNICAL SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS

01010 GENERAL REQUIREMENTS

01340 SAMPLES AND SHOP DRAWINGS

DIVISION 2 – SITE WORK AND DEMOLITION

02050 DEMOLITION

DIVISION 6 – WOOD AND PLASTICS

06100 NAILERS AND BLOCKING

DIVISION 7 – THERMAL AND MOISTURE PROTECTION

07220 ROOF INSULATION

07510 COLD-PROCESS BUILT-UP ROOFING

07600 FLASHINGS AND SHEET METAL

DIVISION 15 – MECHANICAL

15100 MECHANICAL SERVICES

15400 PLUMBING

DIVISION 16 – ELECTRICAL

16000 ELECTRICAL

GENERAL REQUIREMENTS

01010-1

SECTION 01010

1.1 GENERAL INTENTION

A. Contractor shall completely prepare site for building operations, including minor demolition, construction of walls and new finishes, and electrical work.

B. Visits to the site by Bidders may be made only by appointment with the Medical Center Engineering

Officer.

C. All employees of general contractor and subcontractors shall comply with VA security management program and obtain permission of the VA police, be identified by project and employer, and restricted from unauthorized access.

D. Prior to commencing work, general contractor shall provide proof that a OSHA certified “competent person” (CP) (29 CFR 1926.20(b)(2) will maintain a presence at the work site whenever the general or subcontractors are present.

E. Training:

1. Beginning July 31, 2005, all employees of general contractor or subcontractors shall have the 10-hour

OSHA certified Construction Safety course and /or other relevant competency training, as determined by VA CP.

2. Submit training records of all such employees for approval before the start of work.

1.2 STATEMENT OF BID ITEM(S)

A. ITEM I, GENERAL CONSTRUCTION: Work includes demolition or existing roofs on buildings 1 and 20 and solar panel system on building 20. Also included is the complete installation of a new built up roofing system for both buildings.

1.3 SPECIFICATIONS FOR CONTRACTOR

A. AFTER AWARD OF CONTRACT, 1 set of specifications will be furnished.

1.4 FIRE SAFETY

A. Applicable Publications: Publications listed below form part of this Article to extent referenced.

Publications are referenced in text by basic designations only.

1. American Society for Testing and Materials (ASTM):

E84-2005 ..................................Surface Burning Characteristics of Building Materials

2. National Fire Protection Association (NFPA):

10-2002 ....................................Standard for Portable Fire Extinguishers

01010-2

30-2003 ....................................Flammable and Combustible Liquids Code

51B-2003 ..................................Standard for Fire Prevention During Welding, Cutting and Other Hot

Work

70-2005 ....................................National Electrical Code

241-2004 ..................................Standard for Safeguarding Construction, Alteration, and Demolition

Operations

3. Occupational Safety and Health Administration (OSHA):

29 CFR 1926 ............................Safety and Health Regulations for Construction

B. Fire Safety Plan: Establish and maintain a fire protection program in accordance with 29 CFR 1926. Prior to start of work, prepare a plan detailing project-specific fire safety measures, including periodic status reports, and submit to COTR for review for compliance with contract requirements in accordance with

Section 01340, SAMPLES AND SHOP DRAWINGS. Prior to any worker for the contractor or subcontractors beginning work, they shall undergo a safety briefing provided by the general contractor’s competent person per OSHA requirements. This briefing shall include information on the construction limits, VAMC safety guidelines, means of egress, break areas, work hours, locations of restrooms, use of

VAMC equipment, etc. Documentation shall be provided to the COTR that individuals have undergone contractor’s safety briefing.

C. Site and Building Access: Maintain free and unobstructed access to facility emergency services and for fire, police and other emergency response forces in accordance with NFPA 241.

D. Separate temporary facilities, such as trailers, storage sheds, and dumpsters, from existing buildings and new construction by distances in accordance with NFPA 241. For small facilities with less than 6 m (20 feet) exposing overall length, separate by 3m (10 feet).

E. Temporary Heating and Electrical: Install, use and maintain installations in accordance with 29 CFR 1926, NFPA 241 and NFPA 70.

F. Means of Egress: Do not block exiting for occupied buildings, including paths from exits to roads.

Minimize disruptions and coordinate with COTR.

G. Egress Routes for Construction Workers: Maintain free and unobstructed egress.

H. Fire Extinguishers: Provide and maintain extinguishers in construction areas and temporary storage areas in accordance with 29 CFR 1926, NFPA 241 and NFPA 10.

I. Flammable and Combustible Liquids: Store, dispense and use liquids in accordance with 29 CFR 1926, NFPA 241 and NFPA 30.

J. Existing Fire Protection: Do not impair automatic sprinklers, smoke and heat detection, and fire alarm systems.

K. Smoke Detectors: Prevent accidental operation. Remove temporary covers at end of work operations each day. Coordinate with COTR .

01010-3

L. Smoking: Smoking is prohibited in and adjacent to construction areas inside existing buildings and additions under construction. In separate and detached buildings under construction, smoking is prohibited except in designated smoking rest areas.

M. Dispose of waste and debris in accordance with NFPA 241. Remove from buildings daily.

N. Perform other construction, alteration and demolition operations in accordance with 29 CFR 1926.

O. If required, submit documentation to the COTR that personnel have been trained in the fire safety aspects of working in areas with impaired structural or compartmentalization features.

1.5 OPERATIONS AND STORAGE AREAS

A. The Contractor shall confine all operations (including storage of materials) on Government premises to areas authorized or approved by the Contracting Officer. The Contractor shall hold and save the

Government, its officers and agents, free and harmless from liability of any nature occasioned by the

Contractor's performance.

B. Temporary buildings (e.g., storage sheds, shops, offices) and utilities may be erected by the Contractor only with the approval of the Contracting Officer and shall be built with labor and materials furnished by the

Contractor without expense to the Government. The temporary buildings and utilities shall remain the property of the Contractor and shall be removed by the Contractor at its expense upon completion of the work. With the written consent of the Contracting Officer, the buildings and utilities may be abandoned and need not be removed.

C. The Contractor shall, under regulations prescribed by the Contracting Officer, use only established roadways, or use temporary roadways constructed by the Contractor when and as authorized by the

Contracting Officer. When materials are transported in prosecuting the work, vehicles shall not be loaded beyond the loading capacity recommended by the manufacturer of the vehicle or prescribed by any Federal, State, or local law or regulation. When it is necessary to cross curbs or sidewalks, the Contractor shall protect them from damage. The Contractor shall repair or pay for the repair of any damaged curbs, sidewalks, or roads.

(FAR 52.236-10)

D. Working space and space available for storing materials is very limited at building 20 accordingly deliver material to site as needed. Storage space elswhere shall be as determined by the COTR.

E. Workmen are subject to rules of Medical Center applicable to their conduct.

F. Execute work so as to interfere as little as possible with normal functioning of Medical Center as a whole, including operations of utility services, fire protection systems and any existing equipment, and with work being done by others. Use of equipment and tools that transmit vibrations and noises through the building structure, are not permitted in buildings that are occupied, during construction, jointly by patients or

01010-4 medical personnel, and Contractor's personnel, except as permitted by COTR where required by limited working space.

1. Do not store materials and equipment in other than assigned areas.

2. Schedule delivery of materials and equipment to immediate construction working areas within buildings in use by Department of Veterans Affairs in quantities sufficient for not more than two work days. Provide unobstructed access to Medical Center areas required to remain in operation.

3. Where access by Medical Center personnel to vacated portions of buildings is not required, storage of

Contractor's materials and equipment will be permitted subject to fire and safety requirements.

G. Phasing: To insure such executions, Contractor shall furnish the COTR with a schedule of approximate phasing dates on which the Contractor intends to accomplish work in each specific area of site, building or portion thereof. In addition, Contractor shall notify the COTR two weeks in advance of the proposed date of starting work in each specific area of site, building or portion thereof. Arrange such phasing dates to insure accomplishment of this work in successive phases mutually agreeable to COTR.

H. Buildings will be occupied during performance of work.

1. Contractor shall take all measures and provide all material necessary for protecting existing equipment and property in affected areas of construction against dust and debris, so that equipment and affected areas to be used in the Medical Centers operations will not be hindered. Contractor shall permit access to Department of Veterans Affairs personnel and patients through other construction areas which serve as routes of access to such affected areas and equipment. Coordinate alteration work in areas occupied by Department of Veterans Affairs so that Medical Center operations will continue during the construction period.

2. Immediate areas of alterations, e.g. roof drain installation, will be temporarily vacated while alterations are performed.

I. Utilities Services: Maintain existing utility services for Medical Center at all times. Provide temporary facilities, labor, materials, equipment, connections, and utilities to assure uninterrupted services. Where necessary to cut existing water, steam, gases, sewer or air pipes, or conduits, wires, cables, etc. of utility services or of fire protection systems and communications systems (including telephone), they shall be cut and capped at suitable places where shown; or, in absence of such indication, where directed by COTR.

1. No utility service such as water, gas, steam, sewers or electricity, or fire protection systems and communications systems may be interrupted without prior approval of COTR.

2. Contractor shall submit a request to interrupt any such services to COTR, in writing, 48 hours in advance of proposed interruption. Request shall state reason, date, exact time of, and approximate duration of such interruption.

01010-5

3. Contractor will be advised (in writing) of approval of request, or of which other date and/or time such interruption will cause least inconvenience to operations of Medical Center. Interruption time approved by Medical Center may occur at other than Contractor's normal working hours.

J. To minimize interference of construction activities with flow of Medical Center traffic, comply with the following:

1. Keep roads, walks and entrances to grounds, to parking and to occupied areas of buildings clear of construction materials, debris and standing construction equipment and vehicles.

N. Coordinate the work for this contract with other construction operations as directed by COTR. This includes the scheduling of traffic and the use of roadways, as specified in Article, USE OF ROADWAYS.

1.6 ALTERATIONS

A. Survey: Before any work is started, the Contractor shall make a thorough survey with the COTR of areas of buildings in which alterations occur and areas which are anticipated routes of access, and furnish a report, signed by both to the Contracting Officer. This report shall list by rooms and spaces:

1. Existing condition and types of resilient flooring, doors, windows, walls and other surfaces not required to be altered throughout affected areas of buildings.

2. Existence and conditions of items such as plumbing fixtures and accessories, electrical fixtures, equipment, venetian blinds, shades, etc., to be either reused or relocated, or both.

3. Shall designate areas for working space, materials storage and routes of access to areas within buildings where alterations occur and which have been agreed upon by Contractor and COTR.

B. Any items required to be either reused or relocated or both, found during this survey to be nonexistent, or in opinion of COTR, to be in such condition that their use is impossible or impractical, shall be furnished and/or replaced by Contractor with new items in accordance with specifications which will be furnished by

Government. Provided the contract work is changed by reason of this subparagraph B, the contract will be modified accordingly, under provisions of clause entitled "DIFFERING SITE CONDITIONS" (FAR

52.236-2) and "CHANGES" (FAR 52.243-4 and VAAR 852.236-88) of Section 01001, GENERAL

CONDITIONS.

C. Re-Survey: Thirty days before expected partial or final inspection date, the Contractor and COTR together shall make a thorough re-survey of the areas of buildings involved. They shall furnish a report on conditions then existing, of resilient flooring, doors, windows, walls and other surfaces as compared with conditions of same as noted in first condition survey report:

1. Re-survey report shall also list any damage caused by Contractor to such flooring and other surfaces, despite protection measures; and, will form basis for determining extent of repair work required of

Contractor to restore damage caused by Contractor's workmen in executing work of this contract.

D. Protection: Provide the following protective measures:

01010-6

1. Wherever existing roof surfaces are disturbed they shall be protected against water infiltration. In case of leaks, they shall be repaired immediately upon discovery.

2. Temporary protection against damage for portions of existing structures and grounds where work is to be done, materials handled and equipment moved and/or relocated.

3. Protection of interior of existing structures at all times, from damage, dust and weather inclemency.

Wherever work is performed, floor surfaces that are to remain in place shall be adequately protected prior to starting work, and this protection shall be maintained intact until all work in the area is completed.

1.7 INFECTION PREVENTION MEASURES

A. Implement the requirements of VAMC’s Infection Control Risk Assessment (ICRA) team. ICRA Group may monitor dust in the vicinity of the construction work and require the Contractor to take corrective action immediately if the safe levels are exceeded.

B. Establish and maintain a dust control program as part of the contractor’s infection preventive measures in accordance with the guidelines provided by ICRA Group.

1. All personnel involved in the construction or renovation activity shall be educated and trained in infection prevention measures established by the medical center.

C. Medical center Infection Control personnel shall monitor for airborne disease (e.g. aspergillosis) as appropriate during construction. A baseline of conditions may be established by the medical center prior to the start of work and periodically during the construction stage to determine impact of construction activities on indoor air quality. In addition:

1. In case of any problem, the medical center, along with assistance from the contractor, shall conduct an environmental assessment to find and eliminate the source.

C. In general, following preventive measures shall be adopted during construction to keep down dust and prevent mold.

1. Dampen debris to keep down dust and provide temporary construction partitions in existing structures where directed by COTR. Blank off ducts and diffusers to prevent circulation of dust into occupied areas during construction.

2. Do not perform dust producing tasks within occupied areas without the approval of the COTR. For construction in any areas that will remain jointly occupied by the medical Center and Contractor’s workers, the Contractor shall:

a. Provide dust proof construction barriers to completely separate construction from the operational areas of the hospital in order to contain dirt debris and dust. Barriers shall be sealed and made presentable on hospital occupied side. A fire retardant polystyrene, 6-mil thick or greater plastic

01010-7 barrier meeting local fire codes may be used where dust control is the only hazard, and an agreement is reached with the Resident Engineer and Medical Center.

b. HEPA filtration is required where the exhaust dust may reenter the breathing zone. Contractor shall verify that construction exhaust to exterior is not reintroduced to the medical center through intake vents, or building openings. Install HEPA (High Efficiency Particulate Accumulator) filter vacuum system rated at 95% capture of 0.3 microns including pollen, mold spores and dust particles. Insure continuous negative air pressures occurring within the work area. HEPA filters should have ASHRAE 85 or other prefilter to extend the useful life of the HEPA. Provide both primary and secondary filtrations units. Exhaust hoses shall be heavy duty, flexible steel reinforced and exhausted so that dust is not reintroduced to the medical center.

c. Adhesive Walk-off/Carpet Walk-off Mats, minimum 600mm x 900mm (24” x 36”), shall be used at all interior transitions from the construction area to occupied medical center area. These mats shall be changed as often as required to maintain clean work areas directly outside construction area at all times.

d. Vacuum and wet mop all transition areas from construction to the occupied medical center at the end of each workday. Vacuum shall utilize HEPA filtration. Maintain surrounding area frequently.

Remove debris as they are created. Transport these outside the construction area in containers with tightly fitting lids.

e. The contractor shall not haul debris through patient-care areas without prior approval of the COTR and the Medical Center. When, approved, debris shall be hauled in enclosed dust proof containers or wrapped in plastic and sealed with duct tape. No sharp objects should be allowed to cut through the plastic. Wipe down the exterior of the containers with a damp rag to remove dust. All equipment, tools, material, etc. transported through occupied areas shall be made free from dust and moisture by vacuuming and wipe down.

f. Using a HEPA vacuum, clean inside the barrier and vacuum ceiling tile prior to replacement. Any ceiling access panels opened for investigation beyond sealed areas shall be sealed immediately when unattended.

g. There shall be no standing water during construction. This includes water in equipment drip pans and open containers within the construction areas. All accidental spills must be cleaned up and dried within 12 hours. Remove and dispose of porous materials that remain damp for more than 72 hours.

h. At completion, remove construction barriers and ceiling protection carefully, outside of normal work hours. Vacuum and clean all surfaces free of dust after the removal.

D. Final Cleanup:

01010-8

1. Upon completion of project, or as work progresses, remove all construction debris from above ceiling, vertical shafts and utility chases that have been part of the construction.

2. Perform HEPA vacuum cleaning of all surfaces in the construction area. This includes walls, ceilings, cabinets, furniture (built-in or free standing), partitions, flooring, etc.

3. All new air ducts shall be cleaned prior to final inspection.

1.8 DISPOSAL AND RETENTION

A. Materials and equipment accruing from work removed and from demolition of buildings or structures, or parts thereof, shall be disposed of as follows:

1. Reserved items which are to remain property of the Government will be identified as items to be stored. Items that remain property of the Government shall be removed or dislodged from present locations in such a manner as to prevent damage which would be detrimental to re-installation and reuse. Store such items where directed by COTR.

2. Items not reserved shall become property of the Contractor and be removed by Contractor from the

Medical Center.

3. Items of portable equipment and furnishings located in rooms and spaces in which work is to be done under this contract shall remain the property of the Government. When rooms and spaces are vacated by the Department of Veterans Affairs during the alteration period, such items which are NOT required to be either relocated or reused will be removed by the Government in advance of work to avoid interfering with Contractor's operation.

1.9 PROTECTION OF EXISTING VEGETATION, STRUCTURES, EQUIPMENT, UTILITIES, AND

IMPROVEMENTS

A. The Contractor shall preserve and protect all structures, equipment, and vegetation (such as trees, shrubs, and grass) on or adjacent to the work site, which are not to be removed and which do not unreasonably interfere with the work required under this contract. The Contractor shall only remove trees when specifically authorized to do so, and shall avoid damaging vegetation that will remain in place. If any limbs or branches of trees are broken during contract performance, or by the careless operation of equipment, or by workmen, the Contractor shall trim those limbs or branches with a clean cut and paint the cut with a tree-pruning compound as directed by the Contracting Officer.

B. The Contractor shall protect from damage all existing improvements and utilities at or near the work site and on adjacent property of a third party, the locations of which are made known to or should be known by the Contractor. The Contractor shall repair any damage to those facilities, including those that are the property of a third party, resulting from failure to comply with the requirements of this contract or failure to exercise reasonable care in performing the work. If the Contractor fails or refuses to repair the damage

01010-9 promptly, the Contracting Officer may have the necessary work performed and charge the cost to the

Contractor.

1.10 RESTORATION

A. Remove, cut, alter, replace, patch and repair existing work as necessary to install new work. Except as otherwise shown or specified, do not cut, alter or remove any structural work, and do not disturb any ducts, plumbing, steam, gas, or electric work without approval of the COTR. Existing work to be altered or extended and that is found to be defective in any way, shall be reported to the COTR before it is disturbed.

Materials and workmanship used in restoring work, shall conform in type and quality to that of original existing construction, except as otherwise shown or specified.

B. Upon completion of contract, deliver work complete and undamaged. Existing work (walls, ceilings, partitions, floors, mechanical and electrical work, lawns, paving, roads, walks, etc.) disturbed or removed as a result of performing required new work, shall be patched, repaired, reinstalled, or replaced with new work, and refinished and left in as good condition as existed before commencing work.

C. At Contractor's own expense, Contractor shall immediately restore to service and repair any damage caused by Contractor's workmen to existing piping and conduits, wires, cables, etc., of utility services or of fire protection systems and communications systems (including telephone) which are indicated on drawings and which are not scheduled for discontinuance or abandonment.

D. Expense of repairs to such utilities and systems of which are unknown will be covered by adjustment to contract time and price in accordance with clause entitled "CHANGES" (FAR 52.243-4 and VAAR

852.236-88) and "DIFFERING SITE CONDITIONS" (FAR 52.236-2) of Section 01001, GENERAL

CONDITIONS.

1.11 TEMPORARY USE OF EXISTING ELEVATORS

A. Use of existing elevators for handling building materials and Contractor's personnel will not be permitted.

1.12 TEMPORARY TOILETS

A. Contractor shall provide temporary toilets for his/her personnel.

1.13 AVAILABILITY AND USE OF UTILITY SERVICES

A. The Government shall make all reasonably required amounts of utilities available to the Contractor from existing outlets and supplies, as specified in the contract.

- - - E N D - - -

SAMPLES AND SHOP DRAWINGS

01340-1

SECTION 01340

1-1. Refer to Articles titled SPECIFICATIONS AND DRAWINGS FOR CONSTRUCTION (FAR 52.236-21) and, SPECIAL NOTES (VAAR 852.236-91).

1-2. For the purposes of this contract, samples, test reports, certificates, and manufacturers' literature and data shall also be subject to the previously referenced requirements. The following text refers to all items collectively as SUBMITTALS.

1-3. Submit for approval, all of the items specifically mentioned under the separate sections of the specification, with information sufficient to evidence full compliance with contract requirements. Materials, fabricated articles and the like to be installed in permanent work shall equal those of approved submittals. After an item has been approved, no change in brand or make will be permitted unless:

A. Satisfactory written evidence is presented to, and approved by Contracting Officer, that manufacturer cannot make scheduled delivery of approved item or;

B. Item delivered has been rejected and substitution of a suitable item is an urgent necessity or;

C. Other conditions become apparent which indicates approval of such substitute item to be in best interest of the Government.

1-4. Forward submittals in sufficient time to permit proper consideration and approval action by the Government. Time submission to assure adequate lead time for procurement of contract - required items. Delays attributable to untimely and rejected submittals will not serve as a basis for extending contract time for completion.

1-5. Submittals will be reviewed for compliance with contract requirements by Resident Engineer, and action thereon will be taken by Resident Engineer on behalf of the Contracting Officer or by the Contracting Officer.

1-6. Upon receipt of submittals, Resident Engineer will assign a file number thereto.

Contractor, in any subsequent correspondence, shall refer to this file and identification number to expedite replies relative to previously approved or disapproved submittals.

1-7. The Government reserves the right to require additional submittals, whether or not particularly mentioned in this contract. If additional submittals beyond those required by the contract are furnished pursuant to request there for by Contracting Officer, adjustment in contract price and time will be made in accordance with Articles titled CHANGES

01340-2

(FAR 52.243-4) and CHANGES - SUPPLEMENT (VAAR 852.236-88) of the

GENERAL CONDITIONS.

1-8. Schedules called for in specifications and shown on shop drawings shall be submitted for use and information of Department of Veterans Affairs and Resident Engineer. However, the Contractor shall assume responsibility for coordinating and verifying schedules. The Contracting Officer and Architect- Engineer assumes no responsibility for checking schedules or layout drawings for exact sizes, exact numbers and detailed positioning of items.

1-9. Submittals must be submitted by Contractor only and shipped prepaid. Contracting Officer assumes no responsibility for checking quantities or exact numbers included in such submittals.

A. Submittals will receive consideration only when covered by a transmittal letter signed by Contractor. Letter shall be sent via first class mail or FAX and shall contain the list of items, name of Medical Center, name of Contractor, contract number, applicable specification paragraph numbers, applicable drawing numbers

(and other information required for exact identification of location for each item), manufacturer and brand, ASTM or Federal Specification Number (if any) and such additional information as may be required by specifications for particular item being furnished. In addition, catalogs shall be marked to indicate specific items submitted for approval.

1. A copy of letter must be enclosed with items, and any items received without identification letter will be considered "unclaimed goods" and held for a limited time only.

2. Each sample, certificate, manufacturers' literature and data shall be labeled to indicate the name and location of the Medical Center, name of Contractor, manufacturer, brand, contract number and ASTM or Federal Specification Number as applicable and location(s) on project.

3. Required certificates shall be signed by an authorized representative of manufacturer or supplier of material, and by Contractor.

B. If submittal samples have been disapproved, resubmit new samples as soon as possible after notification of disapproval. Such new samples shall be marked "Resubmitted Sample" in addition to containing other previously specified information required on label and in transmittal letter.

C. Approved samples will be kept on file by the Resident Engineer at the site until completion of contract, at which time such samples will be delivered to Contractor as Contractor's property. Where noted in technical sections of specifications, approved samples in good condition may be used in their proper locations in contract work. At completion of contract, samples that are not approved will be returned to Contractor only upon request and at Contractor's expense. Such request should be made prior to completion of the contract.

01340-3

Disapproved samples that are not requested for return by Contractor will be discarded after completion of contract.

D. Submittal drawings (shop, erection or setting drawings) and schedules, required for work of various trades, shall be checked before submission by technically qualified employees of Contractor for accuracy, completeness and compliance with contract requirements. These drawings and schedules shall be stamped and signed by Contractor certifying to such check.

1. For each drawing required, submit one legible photographic paper or vellum reproducible.

2. Reproducible shall be full size.

3. Each drawing shall have marked thereon, proper descriptive title, including Medical Center location, project number, manufacturer's number, reference to contract drawing number, detail Section Number, and Specification Section Number.

4. A space 120 mm by 125 mm (4-3/4 by 5 inches) shall be reserved on each drawing to accommodate approval or disapproval stamp.

5. Submit drawings, ROLLED WITHIN A MAILING TUBE, fully protected for shipment.

6. One reproducible print of approved or disapproved shop drawings will be forwarded to Contractor.

7. When work is directly related and involves more than one trade, shop drawings shall be submitted under one cover.

1-10.Samples, shop drawings, test reports, certificates and manufacturers' literature and data, shall be submitted for approval to: V A BOSTON HEALTHCARE SYSTEM (138)

ATTN: ROBERT HOLT

940 Belmont Street, Brockton, MA 02301

- - - E N D - - -

DEMOLITION

02050-1

SECTION 02050

PART 1 - GENERAL

1.01 GENERAL REQUIREMENTS

A. Include the General Conditions and General Requirements as part of this Section.

B. Examine all other Sections of the Specifications for requirements which affect work of this Section whether or not such work is specifically mentioned in this Section.

C. Coordinate work with that of all other trades affecting or affected by work of this Section. Cooperate with such trades to assure the steady progress of all work under Contract.

D. It is the intent of the Specifications and the Drawings to require that the equipment to be furnished complete in every respect, and that this Contractor shall provide all equipment needed and usually furnished in connection with such systems to provide a complete installation. Equipment, materials, and articles incorporated in the work shall be new and of the best grade of their respective kinds.

1.02 WORK TO BE PERFORMED

A. Extent of demolition is as described. The Contractor is responsible for all demolition, disposal, and cleanup associated with the work, whether or not shown on the plans or described herein.

B. Temporary protection of adjacent buildings and property.

C. Demolition associated with roofing includes but is not limited to:

1. Remove and discard all accumulated layers of ballast, concrete pavers, single-ply (EPDM) membrane materials, thermal insulation and related, residual debris to expose the structural roof decking.

2. Remove and discard all wood blocking/nailers at perimeters.

02050-2

3. Remove and discard all existing roof drains, including strainers, bowls, sleeves, clips, and fasteners in preparation for installation of new cast-iron drains. Modify all existing roof deck openings to ensure that new roof drains are mounted flush-to the structural roof deck.

4. Remove and discard all obsolete roof penetrations, piping and/or related items. In building 20 this includes all solar roof panels, supporting structrure and associated piping.

5. Remove and discard all existing membrane and sheet-metal flashings.

1.03 RELATED WORK UNDER OTHER SECTIONS

A. The following items of related work are specified and included in other Sections of the Specifications:

1. Section 06100 – Nailers & Blocking

2. Section 07220 – Roof Insulation

3. Section 07510 – Cold-Process Built-Up Roofing

4. Section 07600 – Flashings and Sheet Metal

5. Section 15400 – Plumbing

1.04 QUALITY ASSURANCE

A. Supervision:

1. Engage and assign supervision of shoring and bracing work, as applicable, to qualified personnel.

B. Regulations:

1. Comply with local codes and ordinances of governing authorities having jurisdiction.

02050-3

1.05 SUBMITTALS

A. Schedule:

1. Submit schedule indicating proposed methods and sequence of operations for selective demolition.

1.06 JOB CONDITIONS

A. Condition of Structures:

1. The Owner assumes no responsibility for actual condition of items or structures to be demolished.

2. Conditions existing at time of commencement of contract will be maintained by VA insofar as practicable.

B. Protections:

1. Provide temporary barricades and other forms of protection to protect VA personnel and general public from injury due to selective demolition Work. Safety is the sole responsibility of the Contractor.

2. Provide protective measures to provide free and safe passage of VA personnel and general public to and from area of selective demolition.

3. Take measures to protect against windblown dust/debris, obtain approval of means used for dust control.

4. Provide appropriate shoring, bracing, and/or support to prevent movement, settlement, or collapse of masonry-components.

5. Protect adjacent materials and finishes with suitable coverings when necessary including, but not limited to, vehicles in parking lot adjacent to building which will remain in use during work to be performed.

6. Remove protections at completion of demolition work.

C. Damages: Promptly repair damages caused to building or property, including cars, by demolition work at no cost to VA.

D. Traffic:

02050-4

1. Do not partially-block or otherwise impede traffic in streets or entrances at any time.

2. Conduct selective demolition operations and debris removal in a manner to ensure minimum interference with roads, streets, walks, and other adjacent occupied or used facilities.

3. Do not close, block, or otherwise obstruct streets, walks, parking lots, or other occupied or used facilities without written permission from the

COTR.

4. Provide alternate routes around closed or obstructed traffic ways if required by VA.

E. Utility services:

1. Maintain existing utilities, keep in service, and protect against damage during demolition operations.

2. Do not interrupt existing utilities service occupied or used facilities, except when authorized in writing by COTR. Provide 48 hours notice if service must be interrupted.

3. Provide temporary services during interruptions to existing utilities, as acceptable to COTR.

F. Environmental Controls:

1. Comply with governing regulations pertaining to environmental protection including but not limited to dust, noise, and odors.

2. Do not use water when it may create hazardous or objectionable conditions such as ice, flooding, and pollution.

PART 2 - PRODUCTS - NOT USED

PART 3 - EXECUTION

3.01 INSPECTION

A. Before start of selective demolition work, inspect areas in which work will be performed.

02050-5

3.02 PREPARATION

A. Structure Safety:

1. Safety is the sole responsibility of the Contractor.

2. Provide exterior shoring, bracing, or support to prevent movement, settlement, or collapse of structures to be demolished and adjacent facilities to remain.

3. Cease operations and notify the COTR immediately if safety of structure appears to be endangered.

4. Take precautions to support structure until determination by the COTR is made for continuing operations.

3.03 DEMOLITION

A. General:

1. Perform all selective demolition work in a systematic and controlled manner.

2. Use such methods as required to complete work indicated o r required for proper installation on new roofing.

3. If unanticipated mechanical, electrical, or structural elements which conflict with intended function or design are encountered, investigate and measure both nature and extent of the conflict with the COTR.

B. Disposal of Demolished Materials:

1. Remove debris, rubbish, and other materials resulting from demolition operations from site.

2. Transport and legally dispose of materials off site.

3. If hazardous materials are encountered during demolition operations, all operations in the area of the work shall stop and the COTR shall be notified immediately. After a determination by a Hazardous Materials Consultant, retained by the VA , the Contractor shall prepare a change proposal for the additional work for review in accordance with the changes clause. All work shall comply with applicable regulations, laws, 02050-6 and ordinances concerning removal, handling, and protection against exposure or environmental pollution.

4. Burning of removed materials is not permitted.

3.04 CLEANING AND REPAIR

A. On completion of demolition work, remove tools, equipment, and demolished materials from site. Remove debris on a daily basis.

B. Remove areas of protection and leave areas broom clean.

C. Repair areas of demolition performed in excess of that required.

D. Repair adjacent construction or surfaces soiled or damaged by selective demolition work.

END OF SECTION

NAILERS AND BLOCKING

06100 - 1

SECTION 06100

NAILERS AND BLOCKING

PART 1 - GENERAL

1.01 GENERAL REQUIREMENTS

A. Include the General Conditions and General Requirements as part of this Section.

B. Examine all other Sections of the Specifications for requirements which affect work of this Section whether or not such work is specifically mentioned in this Section.

C. Coordinate work with that of all other trades affecting or affected by work of this Section. Cooperate with such trades to assure the steady progress of all work under Contract.

D. It is the intent of the Specifications and the Drawings to require that the construction be furnished complete in every respect, and that this Contractor shall provide all equipment needed and usually furnished in connection with such systems to provide a complete installation. Equipment, materials, and articles incorporated in the work shall be new and of the best grade of their respective kinds.

1.02 SCOPE

A. Install pressure-treated wood nailers and blocking to facilitate the installation and to complete the work. Provide all fasteners - non-corrosive.

B. Install new pressure-treated wood blocking on top of each rooftop curb/duct assembly to raise the curb/duct a minimum of eight (8) inches above the new roof surface eight (8) inches, minimum.

C. New pressure-treated wood locking at roof perimeters shall be installed throughout. The final height of all perimeter blocking shall be determined by the highest elevation of new tapered insulation, as applicable.

D. All other blocking shall be installed to be flush with the top of the insulation.

06100 - 2

1.03 SUBMITTALS

A. Submit the following samples in accordance with the provisions of Section 02050, SAMPLES AND SHOP DRAWINGS.

1. Pressure-treating data.

B Do not commence fabrication of any work or begin installation until approval has been obtained from the Owner.

C. Anchorage and Fastening Materials: Select proper type, size, material and finish for each application. Materials for work within exterior construction shall be galvanized. Comply with the following:

1. Wood Screws: Fed. Spec. FF-S-111

2. Bolts and Studs: Fed. Spec. FF-B-575

3. Lag Screw or Lag Bolts: Fed. Spec. FF-B-561

4. Masonry Anchoring Devices: For expansion shields, nails and drive screws, comply with Fed. Spec. FF-S-325

D. Comply with all requirements and recommendations of the SBC for fasteners types, sizes, and spacings.

PART 2 - PRODUCTS

2.01 WOOD NAILERS

A. Wood nailers shall be minimum #2 lumber "wolmanized" or pressure treated for rot resistance with a salt-based preservative. No creosote or asphaltic type preservatives are allowed.

B. Nailers shall conform to Factory Mutual's Loss Prevention Data 1-49.

C. All wood shall have a maximum moisture content of 19% by weight on a dry weight basis.

06100 - 3

2.02 PLYWOOD

A. Plywood shall be 1/2” CDX, exterior-grade.

B. All wood shall have a maximum moisture content of 19% by weight on a dry weight basis.

3.01 INSTALLATION OF WOOD NAILERS

A. Anchor new wood nailers to roof perimeters to provide full and complete attachment. Roof flashing details will only show blocking thicknesses in conceptual quantities. Field-verify blocking thicknesses prior to bid-submission.

B. Nailers shall be installed using non-corrosive, lag fasteners spaced to resist 300 pounds per foot applied in any direction and installed a maximum of 2’-0" O.C.

All nailers to receive bolts shall be counter-bored to position the nut head slightly below the top of the nailer surface. Install a fastener within 6" of each end of the nailer.

C. Nailers should gap 1/8" at ends and corners. The thickness of the nailer shall be provided such that the top of the nailer is flush with the surface to which the membrane is to be applied (i.e. to match insulation thickness, see detail.) Shim with pressure treated stock to achieve correct height.

D. Provide adhered tapered edge-strips, where necessary, to provide a smooth-transition between blocking heights and roofing substrates.

3.02 INSTALLATION OF PLYWOOD

A. Secure plywood to brick substrate. Submit securement pattern and fasteners for approval.

ROOF INSULATION

07220 - 1

SECTION 07220

ROOF INSULATION

PART 1 - GENERAL

1.01 GENERAL REQUIREMENTS

A. Include the General Conditions, Modifications to the General Conditions, and applicable parts of Division 01000 as part of this Section.

B. Examine all other Sections of the Specifications for requirements which affect work of this Section whether or not such work is specifically mentioned in this Section.

C. Coordinate work with that of all other trades affecting or affected by work of this Section. Cooperate with such trades to assure the steady progress of all work under Contract.

D. It is the intent of the Specifications and the Drawings to require that the equipment to be furnished complete in every respect, and that this Contractor shall provide all equipment needed and usually furnished in connection with such systems to provide a complete installation. Equipment, materials, and articles incorporated in the work shall be new and of the best grade of their respective kinds.

1.02 WORK TO BE PERFORMED

A. The work under this Section consists of furnishing and installing all roof insulation and related items as indicated on the drawings and specified herein.

B. Work entails the installation of new flat-stock and tapered polyisocyanurate insulation set in solvent-free, cold-process adhesive (base layers) and new 1/2” high-density, asphalt-coated wood fiber protection board set in solvent-free, cold-process adhesive (top layer).

C. The drawings indicate and show limits of construction for this project. The specifications specify material and work requirements for this project. Both are complementary to each other and both shall be followed to complete the work.

07220 - 2

1.03 RELATED WORK UNDER OTHER SECTIONS

A. The following items of related work are specified and included in other Sections of the Specifications:

1. NA

2. Section 06110 – Nailers & Blocking

3. Section 07510 – Built-Up Roofing

4. Section 07600 – Flashings and Sheet Metal

1.04 SUBMITTALS

A. Submit in accordance with Section 01300, SUBMITTALS.

1. A letter from the roof system manufacturer and insulation manufacturer stating that the insulation to be used on the project is acceptable for use with the system to be used.

2. Manufacturer's data sheet on each type of insulation.

3. Manufacturer's data sheet on each type of adhesive for insulation.

4. Manufacturer's Material Safety Data Sheets for all products specified in this Section.

5. Complete tapered-insulation shop-drawings, showing slopes, section thicknesses and layouts for all roof areas designated to receive tapered insulation components.

07220 - 3

1.05 GUARANTEE

A. The Contractor shall furnish to the Owner a written guarantee covering all defects of materials and workmanship of this Section that occur within a period of two years from the date of final completion of the project. Should any defects in materials or workmanship develop within this time, all repairs and replacements shall be made at no additional cost to the Owner.

1.07 CODES

A. Except as modified by the requirements of other governing codes and by this specification, insulation and its installation shall conform to the provisions and recommendations of the following codes and standards:

1. Insulation shall have Factory Mutual Class I approval.

2. Cold-process adhesion of thermal insulation shall meet Factory Mutual’s Class 1A-90 wind uplift rating for the specified cold-process, multiple-ply roof system

3. Insulation assembly shall carry Underwriters Laboratory’s Class A approval for fire resistance.

4. Massachusetts State Building Code (6th Edition)

1.08 ENVIRONMENTAL REQUIREMENTS

A. Roof removal and roofing system installation shall not take place during inclement weather or when the air temperature or wind chill temperature is below 40° F.

B. Material safety data sheets of all specified products of this section shall be kept on site daily for project duration.

07220 - 4

PART 2 - PRODUCTS

2.01 INSULATION

A. Polyisocyanurate tapered and flat insulation shall be rigid closed-cell polyisocyanurate core integrally bonded to non-asphaltic fiberglass facing in the foaming process. Insulation shall be required by the roof system manufacturer to obtain the roof system manufacturer’s full-system warranty and shall adhere to the following listed properties:

PROPERTY TEST METHOD VALUE

Slope/Taper: (See roof plan drawing for tapered insulation locations & minimum slope requirements)

Thermal Performance ASTM C-518 Average R=19

Water Absorption % Volume ASTM C-209 <1% volume

Dimensional Stability ASTM D-2126 1.0% max 7 days

Compressive Strength ASTM D-1621 20 psi min.

Foam Core Density ASTM D-1622 2.1 lbs/cu. ft.

nominal

Moisture Vapor Transmission ASTM E 96 <1.0 perm

Flame Spread ASTM E-84 25 max

B. All polyisocyanurate insulation panels shall be obtained from a single source and shall have the same facing materials and be manufactured by the same insulation manufacturer.

C. Tapered edge strips where specified shall be 18 inch wide insulation and shall be fiberboard.

D. Four (4) foot wide tapered insulation shall have a minimum thickness of one (1) inch.

07220 - 5

E. Wood fiberboard insulation shall be ½ inch thick high density wood fiber “cellulosic” insulation that meets federal specifications LLL-1-535B for Class E, 1977 and conforms to the following properties:

PROPERTY VALUE

Thermal Conductivity Max. (k) at 75° F .40

Transverse Load avg. min. lbs. 14

Tensile Strength Parallel to surface avg. min. psi 150

Tensile Strength Perpendicular to surface Avg. min. lbs/ft2 600

Water absorption by volume, max. % 7

Linear expansion 50-90% R.H. avg. max. % .5

Vapor Permeance grains/hr/sq. ft./in. Hg., min. 5

Flame Spread (max.) ASTM E84 275

Modulus of rupture avg. min. psi 275

Deflection at specified Min. load avg. max. in. .75

Thermal Resistance (R-Value) per ½” of material 1.38

Thermal Conductance (C-Value) .72

07220 - 6

2.02 ROOF DECK PREPARATION - WATER-BASED ASPHALT PRIMER

A. Water-based, quick-drying, asphalt primer applied to the concrete roof decking prior to the installation of adhered thermal insulation. Provide water-based primer meeting or exceeding the performance characteristics provided below:

PROPERTY TYPICAL VALUE TEST METHOD

Asbestos content None ASTM D 276-87

Viscosity @ 77 F 65 KU ASTM D 562-81 (Stormer Kreb)

Density @ 77 F 8.8 lb/gal ASTM D 1475-85

Nonvolatile content 32% ASTM D 1644-88

Flash point Not Applicable ASTM D 3278-82

2.03 INSULATION ATTACHMENT

A. Insulation Adhesive:

1. Solvent-free, cold-process insulation adhesive for the securement of insulation components shall meet-or-exceed the following performance characteristics listed below:

PROPERTY TYPICAL VALUE TEST METHOD

V.O.C. Content 20 g/L ASTM D 3960-89

Viscosity @ 77°C 70 Pa s (70,000 cP) ASTM D 2556-69

Non-Volatile Content 99% ASTM D 1644-88

Density @ 77°F 1.0 kg/L (8.5 lb/gal) ASTM D 1875-69

Tensile Strength 1379 kPa (200psi) ASTM D 412-87 @ 77°F

Elongation @ 77°F 1200% ASTM D 412-87

Adhesion Strength 552 (80 psi) ASTM D 816-82 in shear @ 77°F

T-Peel Adhesion 2.6 N/mm (15 lbf/in.) ASTM D 1876-72 @ 77°F

07220 - 7

PART 3 - EXECUTION

3.01 EXAMINATION

A. Insulation shall be installed over a clean, dry and properly prepared roof surface acceptable to the membrane manufacturer and the Owner.