Mount_Rogers_NRA_Office_Roof_Specs.pdf

SPECIFICATIONS FOR

REPLACE ROOF AND CLEARSTORY WINDOWS AT THE MT ROGERS OFFICE

MT ROGERS NRA

GEORGE WASHINGTON & JEFFERSON NATIONAL FORESTS

MARION, VIRGINIA

Designed:

Architect Date

Reviewed:

Forest Engineer Date

Engineering Staff Officer Date

Area Ranger Date

Approved:

Forest Supervisor Date

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01010 - SUMMARY OF WORK

01050 - COORDINATION

01300 - SUBMITTALS

01340 - SHOP DRAWINGS, PRODUCT DATA

01500 - TEMPORARY FACILITIES AND CONTROLS

01511 - TEMPORARY ELECTRICITY

01515 - TEMPORARY WATER

01516 - TEMPORARY SANITARY FACILITIES

01530 - BARRIERS

01532 - TREE AND PLANT PROTECTION

01700 - PROJECT CLOSEOUT

01710 - CLEANING

01730 - OPERATIONS AND MAINTENANCE DATA

DIVISION 2 - EXISTING CONDITIONS

02400 - DEMOLITION AND STRUCTURE MOVING

02410 - DEMOLITION - SELECTIVE DEMOLITION

DIVISION 6 - WOOD, PLASTICS, AND COMPOSITES

06100 - ROUGH CARPENTRY - SHEATHING AND FRAMING

06200 - FINISH CARPENTRY - TONGUE AND GROOVE DECKING

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

07200 - THERMAL PROTECTION

07210 - THERMAL INSULATION - BLANKET INSULATION

07220 - ROOF AND DECK INSULATION - ROOF BOARD INSULATION

07500 - MEMBRANE ROOFING

07530 - ELASTOMERIC MEMBRANE ROOFING - EPDM ROOFING

07600 - FLASHING AND SHEET METAL

07610 - SHEET METAL ROOFING - STANDING SEAM SHEET METAL ROOFING

07700 - ROOF AND WALL SPECIALTIES AND ACCESSORIES

07710 - ROOF SPECIALTIES - MANUFACURED GUTTERS AND DOWNSPOUTS

07720 - ROOF ACCESSORIES - SNOW GUARDS

DIVISION 8 - OPENINGS

08800 - GLAZING

PHOTOS

SOUTH

SOUTH INTERIOR CORNER

EAST

NORTH

WEST

REFERENCE DRAWINGS

PLANS FOR THE RENOVATION OF THE MOUNT ROGERS NRA OFFICE, DATED 6/16/2005

DIVISION 1 - GENERAL REQUIREMENTS

01010 - SUMMARY OF WORK

Contractor shall provide all labor, equipment, tools, and materials necessary for the following work. Remove the existing wood shake roofing system from the Mt Rogers Office, and replace with a new standing seam metal roofing system. Remove existing wood shake roof, roof insulation, roofing felts, underlayment, flashing, trim, and all accessories. Replace with new standing seam metal roof, nailable polyiso roof board insulation, roofing felts, underlayment, flashing, trim, and all accessories. Remove existing 4x6 wood beams, metal flashing, and metal beam caps at eaves and clearstory windows. Replace with new 4x8 wood beams, metal flashing, metal fascia, and metal beam caps at eaves and clearstory windows, and metal ridge cap at clearstory windows only. Stain exposed edges of new 4x8 beams to match adjacent materials.

Repair any damage to the wood tongue and grove roof decking, and to the wood structure as necessary.

The Office footprint, excluding the Elevator Tower, is approximately 9184 sf, with approximately three foot overhangs at eaves and gables, and an approximate slope of 3:12, with no existing gutters or downspouts. New metal gutters and downspouts on the two front interior elevations

(enclosing the patio) shall be an optional bid item.

work. Remove the existing membrane roofing system from the attached Elevator Tower, and replace with a new membrane roofing system. Remove existing membrane roof, insulation, plywood, underlayment, flashing, metal parapet cap, trim, and all accessories. Replace with new

EPDM roof, fiberglass batt insulation, plywood, underlayment, flashing, metal parapet cap, trim, and all accessories. Repair any damage to the wood roof framing, and to the concrete structure and stone facing as necessary. Examine concrete and stone walls carefully for any leaks through to door canopy and door below.

The Elevator Tower footprint is approximately 288 sf, with an approximate slope of 2:12, with one scupper.

work. Remove the existing wood shake roofing system from the Elevator Tower door canopy, and replace with a new standing seam metal roofing system. Remove existing wood shake roof, roofing felts, underlayment, flashing, trim, and all accessories. Replace with new standing seam metal roof, roofing felts, underlayment, flashing, trim, and all accessories. Repair any damage to the wood tongue and grove canopy decking, and to the wood and metal structure as necessary.

Examine concrete and stone walls carefully for any leaks through to door below.

The Elevator Tower door canopy is approximately six feet wide and three feet deep, with an approximate slope of 3:12.

work. Remove the existing clearstory plate glass windows from the Mt Rogers Office, and replace with new clearstory insulating glass unit windows. Remove existing 1/4" plate glass, wood glazing stops, flashing, trim, and all accessories. Replace with new one-inch insulated glass units, wood glazing stops, flashing, trim, and all accessories. Stain exposed edges of new clearstory window stops to match adjacent materials. Repair any damage to the wood framing, and wood structure as necessary.

There are eleven clearstory windows in the Mt Rogers Office. Each window is approximately three feet high by seven feet wide. New clearstory insulated glass unit windows shall be an optional bid item.

All work shall be done in accordance with the contract documents. The Mt Rogers Office is located on the Mt Rogers National Recreation Area, near the town of Marion, VA, in Smyth

County, off of SR 16. Contractor shall field verify all existing conditions, dimensions, overhangs, roof slopes, and clearstory window openings.

Note 1: The Reference Drawings, “Plans for the Renovation of the Mount Rogers NRA Office”, dated 6/16/2005, are NOT new project specific drawings, and they are NOT as-built drawings.

They are for use ONLY to indicate approximate existing conditions, and to indicate approximate detailing of the new standing seam metal roofing system on the Office, the new membrane roofing system on the Elevator Tower, the new standing seam metal roofing system on the

Elevator Tower door canopy, and the new clearstory insulating glass unit windows on the Office.

Note 2: The Mt Rogers Office has had bat exclusion services performed. Contractor shall provide

Big Stretch Sealant to seal all penetration points at the new roofing and clearstory window areas.

Paint sealant to match roofing, windows, or adjacent materials. Notify COR immediately if evidence of bat activity is found.

01050 - COORDINATION

Contractor shall coordinate all work, schedules, submittals, lay-down area, dumpster location, and contruction limits with the COR.

The Mt Rogers Office shall remain open to employees and visitors for the duration of the contract.

Contractor shall provide detailed schedule to COR for approval.

01300 - SUBMITTALS

01340 - Shop Drawings, Product Data

The following submittals shall be provided to the COR for approval, prior to purchasing products/materials, two copies each, or electronic (preferred):

1. Construction schedule.

2. Safety plan.

3. Selective demolition plan.

4. New work plan.

5. Standing seam metal roofing system, nailable polyiso roof board insulation, roofing felts, underlayment, flashing, trim, and all accessories.

6. Metal gutters, downspouts, and all accessories.

7. Snowguards, and all accessories.

8. EPDM roofing system, fiberglass batt insulation, plywood, underlayment, flashing, metal parapet cap, trim, and all accessories.

9. Insulated glass units, wood glazing stops, flashing, trim, and all accessories.

10. Submittals on all “or equals”.

11. Others as specified.

The following submittals shall be provided to the COR for approval, prior to final acceptance of work item, two copies each, or electronic (preferred):

1. Material Safety Data Sheets for all chemicals used.

2. Maintenance requirements for all materials and equipment.

3. Warranties for all materials and equipment.

All other products and materials not otherwise indicated above shall be submitted to the COR for review by designer, prior to purchasing products/materials, two copies each, or electronic

(preferred).

01500 - TEMPORARY FACILITIES AND CONTROLS

01511 - Temporary Electricity

Electricity is available at the Mt Rogers Office.

01515 - Temporary Water

Potable water is available at the Mt Rogers Office.

01516 - Temporary Sanitary Facilities

Exterior public toilets are available at the Mt Rogers Office.

01530 - BARRIERS

Contractor shall erect a temporary fence or barrier around entire work site for the protection of employees and visitors. Use of orange heavy duty mesh safety construction fencing is acceptable.

01532 - TREE AND PLANT PROTECTION

Contractor shall make every effort to protect all vegetation, including grass, plants, shrubbery and trees, inside and outside the construction limits. Construct protective barriers where necessary.

01700 - PROJECT CLOSEOUT

01710 - Cleaning

1. All construction debris shall be picked up and placed in an approved construction dumpster with cover daily. Dumpster shall be removed from Government property immediately at completion of job. All removed materials shall be disposed of according to Local, State and

Federal Regulations.

2. The area shall be thoroughly cleaned and ready for use at the final acceptance.

01730 - OPERATIONS AND MAINTENANCE DATA

Contractor shall turn over to the COR at least two copies of all instructions, parts lists, etc., that may be included in materials that are included in the work, for future maintenance use.

DIVISION 2 – EXISTING CONDITIONS

02400 - DEMOLITION AND STRUCTURE MOVING

02410 - DEMOLITION - SELECTIVE DEMOLITION

General

1. Contractor shall carefully remove existing wood shake roof, roof insulation, roofing felts, underlayment, flashing, trim, and all accessories; existing membrane roof, insulation, plywood, underlayment, flashing, metal parapet cap, trim, and all accessories; existing clearstory plate glass windows, wood glazing stops, flashing, trim, and all accessories; and existing reglet and metal flashing at wood columns between clearstory plate glass windows from the building.

Only remove as much roofing and glazing as can be replaced in the same day.

Contractor shall notify COR before beginning installation of new materials.

2. Contractor may retain all copper materials as salvage.

3. Contractor shall ensure all nails are collected with waste material. Contractor shall use a magnetic sweeper for daily clean-up.

4. Contractor shall carefully remove the lightning protection system, and store for reinstallation upon completion of roof and clearstory windows.

5. Contractor shall be careful to not disturb existing to remain bat exclusion materials. Contractor shall repair or replace any materials that are incidentally damaged.

6. Inspect wood tongue and grove roof decking, wood roof framing, roof and building structure, clearstory window framing, chimney, and any other exposed material for damage or deterioration, and report immediately to the COR.

DIVISION 6 - WOOD, PLASTICS, AND COMPOSITES

06100 - ROUGH CARPENTRY

SHEATHING AND FRAMING

A. General

Contractor shall supply all labor, materials, tools, and equipment to install roof sheathing at

Elevator Tower. Contractor shall supply all labor, materials, tools, and equipment to replace unserviceable roof framing at Elevator Tower IF required. Contractor shall notify COR immediately if any framing is unserviceable.

B. Materials

1. Sheathing shall be 3/4", or of same thickness as existing sheathing, and shall be CDX exterior plywood, or equivelant, as defined by the American Plywood Association.

2. Framing shall be of same thickess as existing framing, and shall be Southern Yellow Pine No.

2 Structural Light framing, or equivalent, as defined by 1991 Standard Grading Rules for

Southern Pine Lumber. Structural lumber shall bear the grade mark of the bureau.

C. Related Materials

As required per manufacturer’s recommendations.

D. Installation

1. Install plywood sheathing so edges of new sheathing squarely join existing roof framing, and securely fasten on all edges. Nail in accordance with roofing manufacturer’s recommendations.

2. Install wood framing so edges of new framing squarely join existing roof framing, and securely fasten on all edges. Nail in accordance with roofing manufacturer’s recommendations.

06200 - FINISH CARPENTRY

TONGUE AND GROVE DECKING

Contractor shall supply all labor, materials, tools, and equipment to replace unserviceable tongue and groove roof decking at Office and Elevator Tower door canopy IF required.

Contractor shall notify COR immediately if tongue and groove roof decking is unserviceable.

Decking shall be 3x6 tongue and grove “V” joint laminated wood deck, exposed surface shall be Inland Red Cedar, or of same size, style and color, to match existing decking. Stain exposed surfaces of new decking to match existing adjacent decking surfaces.

Install wood decking so edges of new decking squarely join existing roof decking, and securely fasten on all edges. Nail in accordance with roofing manufacturer’s recommendations.

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

07200 - THERMAL PROTECTION

07210 - THERMAL INSULATION - BLANKET INSULATION

Contractor shall provide all labor, equipment, tools, and materials necessary to install new 9-

1/4” thick (R-30) preformed glass fiber batt insulation, and all accessories at Elevator Tower.

CertainTeed SMARTBATT with MoistureSense Technology, or equal, with kraft faced vapor retarder, and meeting Class A fire rating. Manufactured in 4 foot lengths, with a nominal thickness of 10 inches, for an R-value of 30, in accordance with ASTM C665, Type II, Class

A, Category 1. Product must meet ASHRAE 189.1.

1. EXAMINATION

a. Examine roof deck for suitability to receive insulation.

b. Verify that substrate is dry, clean and free of foreign material that will damage insulation or impede installation.

c. Notify COR of unsatisfactory preparation before proceeding.

d. Verify that roof drains, scuppers, roof curbs, nailers, equipment supports, vents and other roof accessories are secured properly and installed in conformance with Contract Documents.

e. Verify that deck is structurally sound to support installers, materials, and equipment without damaging or deforming work.

2. PREPARATION

a. Clean surfaces thoroughly prior to installation.

b. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

c. Verify the manufacturer’s roof edge details for accuracy to fit the assembly.

3. INSTALLATION

a. Install in accordance with manufacturer’s installation instructions.

b. Install specified insulation using approved mechanical fasteners, in accordance with manufacturer’s latest written instructions, and as required by governing codes.

c. Install between wood studs with flanges stapled to the sides of the studs. Pull flanges taut while stapling every 8"-12" to prevent gaps. Tabless friction fit insulation is pressure fitted between studs. Faced insulation is placed between joists with vapor retarder facing down.

4. PROTECTION

a. Remove trash and construction debris from insulation surface prior to application of roofing membrane.

b. Do not leave installed insulation exposed to weather. Cover and waterproof completed roof system immediately after installation.

1. Temporarily seal exposed insulation edges at the end of each day.

2. Remove and replace installed insulation that has become wet or damaged with new insulation.

c. Protect installed insulation and roof cover from traffic by use of protective covering materials during and after installation.

07220 - ROOF AND DECK INSULATION - ROOF BOARD INSULATION

Contractor shall provide all labor, equipment, tools, and materials necessary to install new 4-

1/2” thick (R-25) nail base insulation with bonded 19/32” CDX plywood and all accessories at

Office.

Atlas ACFoam Nail Base Nailable Roof Insulation, or equal, thermally efficient non-structural composite insulation, consisting of ACFoam-III closed-cell polyisocyanurate roof insulation board bonded to 19/32” CDX plywood on the top face. Manufactured in 4 feet x 8 feet panels, with a nominal thickness of 4.5 inches, in two layers, for an R-value of 25, in accordance with

ASTM C1289, Type V. Product must meet ASHRAE 189.1.

C. Related Materials (this section is based on using Atlas ACFoam, if another system is used, follow manufacturer’s recommendations for related materials)

Atlas Nail Base Fastener engineered fastener for ACFoam Nail Base Nailable Roof Insulation.

1. EXAMINATION

a. Examine roof deck for suitability to receive insulation.

b. Verify that substrate is dry, clean and free of foreign material that will damage insulation or impede installation.

c. Notify COR of unsatisfactory preparation before proceeding.

d. Verify that roof drains, scuppers, roof curbs, nailers, equipment supports, vents and other roof accessories are secured properly and installed in conformance with Contract Documents.

e. Verify that deck is structurally sound to support installers, materials, and equipment without damaging or deforming work.

2. PREPARATION

a. Clean surfaces thoroughly prior to installation.

b. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

c. Verify the manufacturer’s roof edge details for accuracy to fit the assembly.

3. INSTALLATION

a. Install in accordance with manufacturer’s installation instructions.

b. Install specified insulation using approved mechanical fasteners, in accordance with manufacturer’s latest written instructions, and as required by governing codes.

c. Install with end joints staggered to avoid having insulation joints coinciding with joints in roof deck. In multi-layer installations, stagger joints in top and bottom layers.

4. PROTECTION

a. Remove trash and construction debris from insulation surface prior to application of roofing membrane.

b. Do not leave installed insulation exposed to weather. Cover and waterproof completed roof system immediately after installation.

1. Temporarily seal exposed insulation edges at the end of each day.

2. Remove and replace installed insulation that has become wet or damaged with new insulation.

c. Protect installed insulation and roof cover from traffic by use of protective covering materials during and after installation.

07500 - MEMBRANE ROOFING

07530 - ELASTOMERIC MEMBRANE ROOFING

Contractor shall provide all labor, equipment, tools, and materials necessary to install a new elastomeric membrane roofing sytem, fully adhered application, insulation, plywood, underlayment, vapor retarder, flashing, metal parapet cap, trim, and all related materials and accessories at Elevator Tower.

EPDM membrane, Firestone RubberGard MAX, or equal, internally reinforced, cured, single-ply, 45-mil, roofing membrane. Minimum 20 year warranty. Product must meet ASHRAE

189.1.

1. As required per manufacturer’s recommendations.

2. Coping shall be fabricated from same material as standing seam metal roof. Custom fabricate to meet wall thickness. Contractor shall provide all accessories necessary for installation, including scupper.

Install per manufacturer’s specifications.

E. Submittals

Submit product data to include construction details, material descriptions, dimensions of individual components and profiles, and finishes for each roofing system item and accessory.

Submit sample of roofing membrane, showing thickness and profile. Submit sample of metal coping, showing thickness and profile.

07600 - FLASHING AND SHEET METAL

07610 - SHEET METAL ROOFING - STANDING SEAM SHEET METAL ROOFING

Contractor shall provide all labor, equipment, tools, and materials necessary to install a new standing seam metal roofing sytem, mechanically fastened application, insulation, roofing felts, underlayment, ice and watershield, flashing, trim, and all related materials and accessories at Office and Elevator Tower door canopy (no insulation is required at

Elevator Tower door canopy).

ATAS Dutch Seam, or equal, structural continuous standing seam panel, with 1-1/2” high integral seam, 15” wide, with stiffening ribs, smooth texture, 24 gauge metallic coated steel. Minimum 30 year warranty. Product must meet ASHRAE 189.1.

Installation shall be in accordance with standards established by the Architectural Sheet

Metal Community. Installer to comply with all manufacturer's installation instructions as per project requirements. Care should be taken during handling and fabrication of materials to prevent bending, twisting, abrasion, scratching, denting, etc. All cutting tools should be kept sharp, properly dressed and aligned. If protective masking is utilized, it must be removed immediately after installation.

individual components and profiles, and finishes for each roofing system item and accessory. Submit sample of roofing panel, showing thickness and profile. Submit LEED color samples for selection by COR.

07700 - ROOF AND WALL SPECIALTIES AND ACCESSORIES

07710 - ROOF SPECIALTIES - MANUFACURED GUTTERS AND DOWNSPOUTS

Contractor shall provide all labor, equipment, tools, and materials to install half round metal gutters on the two front interior elevations (enclosing the patio) of Office, and round metal downspouts on each of the two front ends of Office. Contractor shall provide all accessories, including but not limited to: metal elbows, miters, end caps, and outlets, as necessary for a complete guttering and downspout system. If “or equal” roofing system is used, guttering and downspout system shall be from same company as metal roofing system.

1. Gutters shall be 5” half round, smooth texture, 24 gauge metallic coated steel, ATAS

Rainware, or equal. Color shall match metal roof.

2. Downspouts shall be 5” round, smooth texture, 24 gauge metallic coated steel, ATAS

Rainware, or equal. Color shall match metal roof.

3. Gutter brackets shall be combo shank and circle hangers. Brackets shall be installed every

24 inches for heavy snow load. Wrap in metal to match gutters.

4. Downspout brackets shall be flush mount hangers. Install four on each downspout for 10 feet or less. Wrap in metal to match downspouts.

1. Gutters shall be installed graded to drain.

2. Gutters shall be securely fastened to fascia and roof structure, with support brackets as stated above.

3. Downspouts shall be securely fastened to siding and wall structure, with support brackets as stated above.

4. Install all items as recommended by the manufacturer.

individual components and profiles, and finishes for each item and accessory. Submit samples of gutters and downspouts, showing thickness and profile.

07720 - ROOF ACCESSORIES - SNOW GUARDS

Contractor shall provide all labor, equipment, tools, and materials to install snow guards on the two front interior eaves (enclosing the patio) of Office. Contractor shall provide all accessories, including but not limited to: splices, clips and clamps, as necessary for a complete snow guard system. If “or equal” roofing system is used, snow guard system shall be compatible with metal roofing system.

Snow guard system shall be S-5! ColorGuard, or equal, mill-finished, aircraft quality aluminum, manufactured in eight foot sections, un-punched, with splices for adjacent sections, and mechanically attached with S-5! clamps. ColorStrip shall match metal roof.

1. Snow guards shall be installed in three rows of assembly, with a clamp on every seam.

2. Install all items as recommended by the manufacturer.

individual components and profiles, and finishes for each item and accessory. Submit samples of snow guards, showing thickness and profile.

DIVISION 8 - OPENINGS

08800 - GLAZING

Contractor shall provide all labor, equipment, tools, and materials to install new low-e clear insulating glass units on the clearstory windows of Office. Contractor shall provide all accessories, including but not limited to: wood glazing stops, flashing, and trim, as necessary for a complete clearstory window system. Coordinate detailing with new metal roofing system.

Glazing shall be Low-E Clear Insulating Glass, Sungate 400 by PPG Industries, Inc., or equal, in one-inch insulating glass units: 1/4" clear glass + 1/2” air space + 1/4" clear glass. Product must meet ASHRAE 189.1.

1. Rebuild existing fixed plate glass window sill, and extend depth of existing wood beam to

6-1/2”. Coordinate detailing with new metal roofing system.

2. Provide new one-inch insulated glass units, new wood glazing stops, flashing, trim, and all accessories.

3. Provide new reglet and metal flashing at wood columns between clearstory windows.

4. Repair any damage to the wood framing and structure as necessary.

5. Install all items as recommended by the manufacturer.

individual components and profiles, and finishes for each item and accessory. Submit samples of insulating glass units, showing thickness and profile.

PHOTOS

SOUTH (GUTTERS AND DOWNSPOUTS ON THESE FRONT ELEVATIONS)

SOUTH INTERIOR CORNER

EAST (ELEVATOR TOWER ON RIGHT, WITH DOOR CANOPY)

NORTH (ELEVATOR TOWER ON LEFT)

WEST