Attachment 9_Supplemental Specifications.pdf

HJZH 21-1044 RENOVATE BLDG 55

JBER

Joint Base Elmendorf-Richardson

ALASKA

HJZH 21-1044

RENOVATE BLDG. 55

SUPPLEMENTAL SPECIFICATIONS

D E P A R T M E N T O F T H E A I R F O R C E

673 R D C I V I L E N G I N E E R S Q U A D R O N ( P A C A F )

J B E R A L A S K A 9 9 5 0 6

HJZH 21-1044

RENOVATE BLDG. 55

SUPPLEMENTAL SPECIFICATIONS

INDEX

SECTION TITLE

00001 JBER CAD/GIS RECORD DRAWING AS-BUILT STANDARD

04500 CONCRETE AND MASONRY RESTORATION

06200 FINISH CARPENTRY

07240 ROOF INSULATION & VAPOR BARRIER FOR CONCRETE OR

WOOD DECKS

07311 SBS ASPHALT SHINGLES

07620 SHEET METAL FLASHING AND TRIM

08110 STEEL DOORS AND FRAMES

09900 PAINTING

15010 GENERAL MECHANICAL

26 00 00.00 20 BASIC ELECTRICAL MATERIAL & METHODS

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Dec 2019

JOINT BASE ELMENDORF-RICHARDSON CAD / GIS RECORD DRAWING AS-BUILT

STANDARD

1.0 Record Drawing as-built Deliverables

A. General Requirements: The purpose of this standard is to identify the use of CAD/GIS standards by contractors for Record Drawing As-built deliverables. The intent is to not to provide specific guidance to a contractor on execution but to identify the format of the Record Drawing As-built. The AutoCAD deliverables shall be developed according to the latest release of The CAD BIM Technology Center A/E/C CAD Standard ERDC/ITL TR-12-X published by the U.S. Army Engineer Research and Development Center at 3909 Halls Ferry Road Vicksburg, MS 39180-6199. This publication is available at https://cadbimcenter.erdc.dren.mil. The following are specific Air Force requirements and if there is a conflict between the A/E/C CAD standard and the Air Force requirements then the Air Force requirements shall take precedence. Clarification on the A/E/C CAD standard shall be addressed thru the Air Force Project Manager. GIS/GPS requirements are shown in paragraph 3.

2.0 As-Built:

A. Electronic submittals: All DWG's shall be developed and saved by software that is licensed by Autodesk. As-built shall be delivered in an editable Autodesk AutoCAD 2015 or earlier version to include all support files and an Adobe PDF. Assemble project electronic files into a Microsoft Windows folder structure as illustrated in Figure 1. Submit all electronic files on a CD-R. Label the CD-R with a CD/DVD label; include a minimum of project number, project title, As-built date.

1. AutoCAD deliverables:

a. File templates: The Government shall provide AutoCAD border sheet templates for development of project drawings. The border sheet template shall be inserted into the sheet layout as a block.

b. Drawing sheet assembly: Drawing Sheet assembly shall be arranged as prescribed in ERDC/ITL TR- 12-X, FIGURE 2-1, however, the border sheet shall be inserted as a block into the sheet file. Create only one layout per AutoCAD file, that is, each project sheet corresponds to a single unique dwg.

c. File naming conventions: The AEC Sheet File name is the unique name of each individual AutoCAD project Model and Sheet File as prescribed in ERDC/ITL TR-12-X figures 2-2 and 2-3 respectively.

Ensure the Sheet File name is shown in the title block as the “AEC Sheet File Name”. See Government supplied templates.

d. External References: External References shall be bounded.

e. Civil plans: All Civil Plan Views shall be geospatially referenced, with an accuracy of 0.5 meters or better, using the Universal Transverse Mercator (UTM) meters coordinate system, World Geodetic System 1984 (WGS84) datum. Model space geometry shall not be scaled from original 1:1 or subsequently moved after being geo-spatially located.

f. Miscellaneous:

1. Model space geometry shall be drawn 1:1.

2. Text shall be true type font Arial and Arial Bold.

3. 1/8” (3 mm) text height shall be used for dimensions, notes, callouts, table/schedule text and general text on full size drawings.

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4. Use a “key plan inset” where appropriate to discriminate work locations relative to the entire construction.

5. All files, where appropriate and practical, shall have a graphical scale, a numerical scale, a plan and magnetic north arrow and a dimensional reference grid system.

6. Reference ERDC/ITL TR-12-X, para 3.1.5: for interior and exterior utility plans, “screen” floor plan and geography to contrast utility layout so as to readily distinguished differences.

7. Each sheet shall have a revision block annotation “RECORD DRAWING AS-BUILT”.

2. PDF deliverables:

a. A “published” PDF from the native DWG that is combined, mono-chromed and booked mark per the

Schedule of Drawings shall be delivered.

3. GIS/GPS deliverables:

Vector data, raster data, or any other geospatial technology deliverables will adhere to the following Air Force GeoBase standards:

Coordinate System: Grid Horizontal Datum: WGS84 (G1762) UTM 06 North Vertical Datum: NAVD88 Geoid Model: GEOID06 Alaska (G2006A02) Units: Meter

a. GIS: The contractor shall contact the 673d CES GeoBase Program Manager (PM) for a list of approved GIS file types and the most current version of the Air Force Spatial Data Standards for Facilities, Infrastructure, and Environment (AF SDSFIE) compliant database shell prior to data collection. All database layers shall be populated and attributed without making any modifications to the provided schema. It is the contractor’s responsibility to ensure that delivered layers are fully compliant with current AF SDSFIE data standards. Contact the 673d CES GeoBase PM for the latest AF SDSFIE compliant Data Dictionary, Air Force Installation and Mission Support Center Detachment 2 (AFIMSC Det 2) Data Model, and any additional data requirements prior to beginning work. Any additional data that does not fit into the AF SDSFIE database shall be submitted in a separate geodatabase, shapefile, or table approved by the GeoBase PM.

b. GPS/Survey Data: The contractor shall provide coordinate data for all pertinent features within the project, meeting appropriate survey/mapping accuracy standards. Contact the GeoBase PM to obtain current GPS/Survey standard requirements and available survey control points prior to beginning work.

GPS data dictionary/feature code library files meeting 673d CES GeoBase standards shall be used by the contractor for data collection and are available from the 673d CES GeoBase PM. All surveyed data shall consist, at a minimum, of X-coordinate, Y-coordinate, and Description. All utilities, above and below ground, shall consist of an X-coordinate, Y-coordinate, Z-coordinate, and Description. Z-coordinates values shall be identified as top of utility, invent, rim, ground, etc. Surveyed data shall be submitted in text or ASCII, comma delimited file format (P,N,E,Z, Desc). All surveyed data shall include, but not be limited to:

1. All new infrastructure (buildings, roads, parking lots, sidewalks, airfields, bridges, railroads, etc.)

2. Electrical features (UG cables, OH cables, transformers, generators, manholes, meters, switches, substations, exterior lighting, airfield lighting, etc.)

3. Fuels features (air eliminators, control valves, filter strainers, hydrants, pipelines, meters, pumps, pump stations, tank farms, etc.)

4. Natural gas features (control valves, pipelines, fittings, meters, pressure monitors, pump stations, regulators, etc.)

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5. Storm sewer features (control valves, culverts, discharge points, inlets, pipelines, manholes, open drainage lines, pumps, pump stations, storage reservoirs, etc.

6. Wastewater features (cleanouts, control valves, fittings, pipelines, manholes, meters, oil water separators, pumps, pump stations, septic tanks, treatment plants, etc.

7. Water features (control valves, fire hydrants, fittings, pipelines, meters, pumps, pump stations, sources, water tanks, water treatment points, etc.

B. Print submittals:

a. Provide plotted DWG sheet files on ANSI D @ 1:1 on a minimum of .004ml double matte reproducible polyester film.

Figure 1

PROJECT NAME AND NUMBER

PDF

DWG

MAINTAIN PAINT, BASE FACILITIES. REQUIREMENTS HJZH 21-1044

04500-1

SECTION 04500

CONCRETE & MASONRY RESTORATION AND CLEANING

PART 1 GENERAL

1.1 SECTION INCLUDES

1.1.1 Water, Steam, Blast, Chemical cleaning of concrete and CMU surfaces.

1.1.2 Repointing mortar joints.

1.1.3 Repair of damaged masonry and concrete.

1.2 RELATED SECTIONS

1.2.1 Section 07900 - Joint Sealers.

1.2.2 Section 09900 - Painting: Repainting renovated and cleaned surfaces.

1.3 REFERENCES

1.3.1 ACI 530 - Building Code Requirements for Masonry Structures.

1.3.2 ACI 530.1 - Specifications For Masonry Structures.

1.3.3 IMIAC - International Masonry Industry All-Weather Council: Recommended Practices and Guide Specification for Cold Weather Masonry Construction.

1.3.4 IMIAC - International Masonry Industry All-Weather Council: Recommended Practices and Guide Specification for Hot Weather Masonry Construction.

1.3.5 ASTM C33 - Specification for Concrete Masonry Grouts.

1.3.6 ASTM C150 - Portland Cement.

1.3.7 ASTM C404 - Aggregates for Masonry Grouts.

1.4 SUBMITTALS

1.4.1 Submit under provisions of Section 01010.

1.4.2 Product Data: Provide data on cleaning compounds, and cleaning solutions to be used.

1.4.3 Manufacturer's Instructions: Indicate special procedures, perimeter conditions requiring special attention.

1.5 QUALITY ASSURANCE

04500-2

1.5.1 Perform Work in accordance with ACI 530, ACI 530.1 ASTM C33, and ASTM C404.

1.5.2 Maintain one copy of each document on site.

1.5.3 Restorer: Company experienced in masonry restoration with minimum three years experience.

1.5.4 Structural Crack: A structural crack is defined as a crack over 1/16 inch wide in any plaster, concrete, stucco,and masonry, and all other similar masonry failures. Prior to any work on exterior masonry, plaster, concrete, and stucco surfaces, the Contractor and Contracting Officer shall carefully survey these surfaces and sound out all surfaces by tapping and probing to find all structural cracks. After the defective surfaces have been clearly marked, the methods of repair shall be closely followed as hereinafter specified.

1.5.5 The repair of hairline cracks 1/16 inch and less in width is covered in SECTION

09900: PAINTING, GENERAL.

1.6 DELIVERY, STORAGE, AND HANDLING

1.6.1 Transport products by methods to avoid product damage; deliver in undamaged condition in manufacturer's unopened containers or packaging.

1.6.2 Provide equipment and personnel to handle products by methods to prevent soiling or damage.

1.6.3 Deliver products in undamaged, dry condition, in original unopened containers or packaging with identifying labels intact and legible.

1.6.3.1 Promptly inspect shipments to assure that products comply with requirement quantities are correct, and products are undamaged.

1.6.3.2 Store products in accordance with manufacturer's instructions, with seals and labels intact and legible. Store sensitive products in weather-tight enclosures; maintain within temperature and humidity ranges required by manufacturer's instructions.

1.6.3.3 Arrange storage to provide access for inspection. Periodically inspect to assure products are undamaged, and are maintained under required conditions.

1.7 PROTECTION

1.7.1 Protect elements surrounding the work of this section from damage or disfiguration.

1.7.2 Immediately remove stains, efflorescence, or other excess resulting from the work of this section.

1.7.3 Protect roof membrane and flashings from damage.

1.8 ENVIRONMENTAL REQUIREMENTS

04500-3

1.8.1 Cold Weather Requirements: IMIAC - Recommended Practices and Guide Specification for Cold Weather Masonry Construction.

1.8.2 Hot Weather Requirements: IMIAC - Recommended Practices and Guide

Specifications for Hot Weather Masonry Construction.

1.8.3 Do not sandblast or use process creating dust, dirt, when wind is over 10 mph (16 kph).

1.9 SEQUENCING

1.9.1 Perform repointing after cleaning masonry surfaces.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Bonding Agent: Polyvinyl acetate emulsion, dispersant in water while mixing, non-coagulant in mix, water resistant when applied and cured.

2.1.2 Portland Cement: ASTM C150, gray color.

2.1.3 Sand: ASTM C404; uniformly graded, clean.

2.1.4 Water: Clean and potable.

2.2 MIXING CEMENTITIOUS MATERIALS

2.2.1 Mix cementitious mortar and grout in accordance with manufacturer's instruction for purpose intended.

2.2.2 Mix components in clean equipment or containers. Conform to pot life and workability limits.

PART 3 EXECUTION

3.1 EXAMINATION

3.1.1 Verify that surfaces to be cleaned and restored are ready for work of this section.

3.2 PREPARATION

3.2.1 Carefully remove and store fixtures, fittings, finishing hardware, accessories.

3.2.2 Close off, seal, mask, and board up areas, materials, and surfaces not receiving work of this section to protect from damage.

3.3 REBUILDING

04500-4

3.3.1 Cut out damaged and deteriorated masonry and concrete with care in a manner to prevent damage to any adjacent remaining materials. Clean surfaces of dirt, laitance, corrosion, or other contamination; wire brush using water and allow to dry.

3.3.2 Flush out cracks and voids with water.

3.3.3 Cut away loose or unsound adjoining masonry mortar and concrete to provide firm and solid bearing for new work.

3.3.3.1 Structural cracks in masonry, concrete, plastered masonry and concrete, and stucco over masonry and concrete shall be opened with a power chisel in a "V" groove at least 1/2 inch in depth or to a solid bearing. The exposed surfaces of the crack shall be cleaned of all lose and foreign materials.

3.3.3.2 Structural cracks in plaster and stucco over lath follow the same procedures as specified above, except use extreme caution in removing the plaster and stucco to avoid damaging the lath.

3.3.4 Mortar Mix: Colored and proportioned to match existing work.

3.3.5 Ensure that anchors, ties and flashings are correctly located and built in.

3.3.6 Repair visually exposed structural, shrinkage, and settlement cracks of existing concrete work by the bonding agent and cementitious paste methods

3.3.7 Fill voids flush with surface.

3.3.8 Apply brush coating of bonding agent to concrete surfaces. Provide full surface coverage.

3.3.9 Apply cementitious mortar and grout by steel trowel. Tamp into place filling voids at spalled areas. Work mix into honeycomb.

3.3.10 Mixing of the patching material shall be in conformance with the material manufacturer's printed instructions. Batches shall be of size to allow continuous placement of freshly mixed patching material. Placing shall be quick and continuous.

Patching materials not used within the time specified by the material manufacturer shall be discarded.

3.3.11 Application: Apply the patching compound with a broad putty knife or other suitable tools to fill the crack. The crack shall be filled such that the material will have adequate bond with the adjacent and/or underlying surfaces and construction.

Patchwork shall be finished flush and in the same plane as the adjacent surfaces shall be finished to match adjoining surfaces in texture and color.

3.3.12 Install built in masonry work to match and align with existing, with joints and coursing true and level, faces plum and in line. Build in all openings, accessories and fittings.

3.3.13 Damp cure cementitious mortar and grout for four days.

04500-5

3.4 REPOINTING

3.4.1 Cut out loose or disintegrated mortar in joints to minimum 1/2 inch (6 mm) depth or until sound mortar is reached.

3.4.2 Do not damage masonry units.

3.4.3 When cutting is complete, remove dust and loose material by brushing.

3.4.4 Premoisten joint and apply mortar. Pack tightly in maximum 1/4 inch (6 mm) layers.

Form a smooth, compact joint to match existing.

3.4.5 Moist cure for 72 hours.

3.5 CLEANING EXISTING MASONRY

3.5.1 High Pressure Cold Water: Cold water blast to masonry surfaces, at all locations, providing uniform finish.

3.6 CLEANING NEW MASONRY

3.6.1 Verify mortar is fully set and cured.

3.6.2 Clean surfaces and remove large particles with wood scrapers, brass or nylon wire brushes.

3.6.3 Scrub walls using stiff brush. Thoroughly rinse and wash off dirt and mortar crumbs using clean, pressurized water.

3.6.4 Protect area below cleaning operation and keep flushed free of dissolved mortar continuously for duration of cleaning.

3.7 CLEANING

3.7.1 As work proceeds and on completion, remove excess mortar, smears, droppings.

3.7.2 Clean surrounding surfaces.

3.8 MEASUREMENT

3.8.1 Structural cracks larger than 1/16" in width shall be measured by the linear foot (LF) and payment calculated on the basis on the contract unit price for repair of structural cracks. Repair of structural cracks smaller than 1/16" in width shall be considered incidental to painting and no separate measurement or payment will be made.

END OF SECTION

06200-1

MAINTAIN PAINT, BASE FACILITIES, REQUIREMENTS

SECTION 06200

FINISH CARPENTRY

PART 1 GENERAL

1.1 SECTION INCLUDES

1.1.1 Finish carpentry replacement due to deterioration.

1.1.2 Hardware and attachment accessories.

1.2 RELATED SECTIONS

1.2.1 Section 06112 Framing and Sheathing.

1.2.2 Section 09900 - Painting: Painting and finishing of finish carpentry items.

1.3 REFERENCES

1.3.1 ANSI (American National Standards Institute) A135.4 - Basic Hardboard.

1.3.2 ANSI A208.1 - Mat Formed Wood Particleboard.

1.3.3 ASTM E84 - Test Method for Surface Burning Characteristics of Building Materials.

1.3.4 AWI (Architectural Woodwork Institute) - Quality Standards.

1.3.5 AWPA (American Wood Preservers Association) C2 - Lumber, Timbers, Bridge Ties and Mine Ties - Preservative Treatment by Pressure Processes.

1.3.6 FS (Federal Standard) MMM-A-130 - Adhesive, Contact.

1.3.7 HPMA (Hardwood Plywood Manufacturer's Association) HP - American Standard for Hardwood and Decorative Plywood.

1.3.8 NEMA (National Electric Manufacturers Association) LD3 - High Pressure Decorative Laminates.

1.3.9 NHLA (National Hardwood Lumber Association).

1.3.10 NWWDA (National Wood Window and Door Association) I.S.4 - Water Repellent Preservative Treatment for Millwork.

1.3.11 PS 1 - Construction and Industrial Plywood.

1.3.12 PS 20 - American Softwood Lumber Standard.

06200-2

1.4 SUBMITTALS

1.4.1 Product Data: Provide data on finish materials and application instructions.

1.5 QUALITY ASSURANCE

1.5.1 Perform work in accordance with AWI Premium quality NHLA.

1.6 QUALIFICATIONS

1.6.1 Fabricator: Company specializing in fabricating the products specified in this section with minimum three years documented experience.

1.7 DELIVERY, STORAGE, AND HANDLING

1.7.1 Materials shall be delivered to the site in undamaged condition, stored in fully covered, well-ventilated areas, and protected from extreme changes in temperature and humidity.

1.7.2 Protect work from moisture damage.

1.8 FIELD MEASUREMENTS

1.8.1 Verify that field measurements are as indicated on shop drawings.

1.9 COORDINATION

1.9.1 Coordinate with other trades. Schedule work for minimum conflict and rework.

PART 2 PRODUCTS

2.1 LUMBER MATERIALS

2.1.1 Softwood Lumber: PS 20, Graded in accordance with AWI Custom species as noted plain sawn, maximum moisture content of 12 percent; with flat grain, of quality suitable for transparent finish.

2.1.2 Hardwood Lumber: Graded in accordance with AWI Premium; species as noted, plain sawn, maximum moisture content of 11 percent; with flat grain, of quality suitable for transparent finish.

2.1.3 SIZES AND PATTERNS: Lumber sizes and patterns shall conform to Prod. Std. PS 20, and unless otherwise specified, shall be surfaced on four sides. Sizes and patterns for materials other than lumber shall conform to requirements of the rules of standard under which produced. Size references, unless otherwise specified, are nominal sizes, and actual sizes shall be within manufacturing tolerances allowed by the standard under which the product is produced.

06200-3

2.1.4 MOISTURE CONTENT at time of delivery and when installed in the work shall be as follows:

Treated and untreated trim ..12 percent maximum Wood siding……..............… 12 percent maximum Other materials……..............In accordance with the standard under which the product is produced.

2.2 SHEET MATERIALS

2.2.1 Softwood Plywood: PS 1 Grade C-D; Graded in accordance with AWI Custom; veneer core.

2.3 Materials used in replacement of deteriorated materials shall closely match the materials replaced and shall conform to the respective specifications and other requirements specified below:

2.3.1 Nails: Size and type best suited for purpose, hot dip galvanized or aluminum for exterior use, in accordance with FS FF-N-105 when applicable to type used. For siding, length of nails shall be sufficient to extend 1-1/2 -inch into supports, including sheathing over framing, or to penetrate full thickness of plywood or wood sheathing if nailing into supports is not specified. Screws for use where nailing is impracticable shall be size best suited for purpose.

2.3.2 Wood Horizontal and Vertical Siding: Species and grade shall match existing and shall closely match pattern, profile, and size of siding replaced.

2.3.3 Trim: Designs and patterns to match existing trim in accordance with grading rules for the species for such items as door and window casings, fascias, and other exterior trim such as thresholds, drips and water tables, corner boards, skirt boards, half-round molds quarter-round molds, and screen molds; sanded at the mill insofar as practicable in maximum practicable lengths, finger joints are permitted when finish is paint.

2.3.4 Insect Screen: Insect screen shall conform to FS RR-W-365, 18 by 16 mesh aluminum wire cloth screening, Bronze, or plastic coated fibrous glass conforming to Fed Spec.

L-S-125 to match existing.

2.3.5 Glass: Glass shall conform to FS DD-G-451, Type I, Class 1, Quality q3.

2.4 GRADING AND MARKING; Lumber and trim shall bear the trademark, stamp or other identifying marks indicating grades of material and rules or standards under which produced.

Such identifying marks on a material shall be in accordance with the rule or standard under which the material is produced, including requirements for qualification and authority of the inspection organization, usage of authorized identification, and information included in the identification. Except for plywood and lumber, bundle marking or certificates will be permitted in lieu of marking each individual piece.

PART 3 EXECUTION

3.1 EXAMINATION

06200-4

3.1.1 Verify adequacy of backing and support framing.

3.1.2 Verify mechanical, electrical, and building items affecting work of this section are placed and ready to receive this work.

3.2 INSTALLATION

3.2.1 Install work in accordance with AWI Premium Quality Standard.

3.2.2 Set and secure materials and components in place, plumb and level.

3.2.3 Carefully scribe work abutting other components, with maximum gaps of 1/32 inch (1 mm). Do not use additional overlay trim to conceal larger gaps.

3.2.4 Install components in accordance with manufacturers recommendation or best standards of the trade.

3.2.5 Install hardware in accordance with manufacturer's instructions.

3.3 SITE APPLIED WOOD TREATMENT

3.3.1 Apply preservative treatment in accordance with the manufacturer's instructions.

3.3.2 Brush apply preservative treatment on wood in contact with cementitious materials, roofing and related metal flashings. Treat site-sawn cuts.

3.3.3 Allow preservative to dry prior to erecting members.

3.4 PREPARATION FOR SITE FINISHING

3.4.1 Set exposed fasteners. Apply wood filler in exposed fastener indentations. Sand work smooth.

3.4.2 Before installation, prime paint surfaces of items or assemblies to be in contact with cementitious materials.

3.5 ERECTION TOLERANCES

3.5.1 Maximum Variation from True Position: 1/16 inch (1.5 mm).

3.5.2 Maximum Offset from True Alignment with Abutting Materials: 1/32 inch (0.7 mm).

3.6 GENERAL REQUIREMENTS FOR REMOVALS FOR REPLACEMENT:

Existing deteriorated finish carpentry items shall be removed and replaced, excepting nonstandard items which will be replaced by the Government at the convenience of the Government. The Contractor will be required to continue his work without delay but will not paint over the immediate area of deterioration only. The Contractor will not be required to replace finish carpentry items not covered below. The method of removal will be optional with

06200-5 the Contractor subject to approval by the Contracting Officer. Methods of removal which result in excessive damage to adjacent construction and finish will not be permitted.

3.7 INSTALLATION OF SIDING:

3.7.1 General: Existing deteriorated siding shall be cut to span a minimum of three bearing members. New siding shall be accurately fit and positioned without springing or otherwise forcing the siding in place. Exterior joints shall be made water-resistant by careful fitting and use of specified sealer.

3.8 HORIZONTAL SIDING: End joints shall be made over framing members. Ends of siding shall be pre drilled if necessary to prevent splitting when nailed. Horizontal bevel or plain lap siding shall overlap to match existing adjacent siding and shall be nailed into each support in accordance with approved recommendations of the manufacturer. Horizontal drop siding shall have each course fully worked into the top edge of the previous course, and shall be nailed into each support with two nails, one near the lower edge to clear top of previous course, and one just above mid-height of course, except only one nail shall be used for 6-inch wide siding.

3.9 Vertical board siding shall be applied with horizontal joints to match existing location.

Each board shall be fully worked into the edge of previous course, and shall nailed into supports at 24 inches on centers with two nails, one blind if possible or near joints with the previous board, and one nail shall be used for boards 6 inches wide.

3.10 INSTALLATION OF TRIM: Deteriorated trim shall be removed to nearest end joint of trim. Trim shall be installed straight, plumb, level and with closely fitted joints. Blind nailing shall be used to extent practicable, and face nailing shall be set and stopped with a non-staining putty to match the finish applied. Exterior joints shall be made water-resistant by careful fitting and caulking. Molded work shall be coped at returns and interior angles and mitered at external corners. Intersections of flat work shall be shouldered to ease any inherent change in plane.

3.11 THRESHOLDS: Deteriorated wood thresholds shall be replaced as directed by the Contracting Officer. Thresholds shall be plain swan white or red oak, width and thickness to match existing thresholds to be replaced, with beveled sides, shall be cut to fit jambs, and shall be secured with casing nails set for putty stopping.

3.12 REPRESENTATIVE TREATMENT: All new and exterior trim provided under this contract shall be preservative treated in accordance with NWMA I.S.4. Treated wood which is cut shall be brush coated with the preservative used in the original treatment.

3.13 INVENTORY: Prior to commencement of any work on a building or portion thereof, the Contractor and the Contracting Officer shall inventory each building and determine the deteriorated finish carpentry items to be replaced.

3.14 MEASUREMENT:

3.14.1 Replacing of deteriorated wood siding shall be measured for payment by the 100 square feet (CSF).

3.14.2 Replacing deteriorated exterior window and door trim shall be measured for payment by the lineal foot (LF).

06200-6

3.14.3 Replacing deteriorated window sill shall be measured for payment by the linear (LF).

3.14.4 Replacing deteriorated wood thresholds shall be measured for payment by the linear foot (LF).

3.14.5 Replacing deteriorated fascia boards and barge boards shall be measured for payment by the square foot (SF).

3.14.6 Replacing deteriorated skirt boards and cornerboards shall be measured for payment by the lineal foot (LF).

3.14.7 Replacing deteriorated half-round and quarter-round moldings shall be measured by the lineal foot.

3.14.8 Replacing deteriorated screen molds shall be measured for payment by the linear foot

(LF).

3.14.9 Replacing deteriorated wood members of warehouse /garage type doors shall be measured for payment by the square foot (SF).

3.14.10 Replacing deteriorated water tables or drips shall be measured for payment by the linear foot (LF).

3.14.11 Replacing deteriorated soffits (1/2"-inch thick exterior plywood by various widths) shall be measured for payment by the square foot (SF).

3.14.12 Replacing deteriorated wood baseboards, and sanitary bases shall be measure for payment by the linear foot (LF).

3.14.13 Replacing deteriorated shoe molds shall be measured for payment by the linear foot

(LF).

3.14.14 Replacement of screen fabric and glass shall be measured for payment by the square foot (SF).

7240-1

HJZH 21-1044 – ROOF REQUIREMENTS

SECTION 7240 – ROOF INSULATION & VAPOR BARRIER FOR CONCRETE OR WOOD DECKS

1. APPLICABLE PUBLICATIONS:

1.1 Federal Specifications (FS):

HH-I-1972/2 Insulation Board, Thermal, Polyurethane or Polyisocyanurate Faced with Asphalt/Organic Felt, Asphalt/Asbestos Felt or Asphalt/Glass Fiber Felt on Both Sides of the Foam.

HH-I-1972/3 Insulation Board, Thermal, Polyurethane or Polyisocyanurate Face with Perlite Insulation Board on One Side and Asphalt/ Glass Fiber Felt on the Other Side of the Foam.

SS-C-153C Cement, Bituminous, Plastic

1.2 American Society for Testing and Materials (ASTM) Publications:

C 208 Insulating Board - Cellulosic Fiber

C 578 Preformed, Cellular, Polystyrene Thermal Insulation

C 728 Perlite Thermal Insulation Board

C 1289 Faced Rigid Cellular Polyisocyanurate Thermal Insulstion Board

D 41 Asphalt Primer Used in Roofing

D 312 Asphalt Used in Roofing

D 2178 Asphalt-Impregnated Glass Felts Used in Roofing

E 96 Water Vapor Transmission of Materials

F 1667 Driven Fasteners: Nails, Spikes, and Staples

1.3 American Society of Heating, Refrigerating and Air-ConditioningEngineers, Inc. (ASHRAE) Publication:

Fundamentals Handbook (Latest Edition)

1.4 Factory Mutual Engineering Corporation (FM):

Approved Roofing Products (Latest Edition)

7240-2

1.5 National Roofing Contractors' Association (NFCA):

Roofing Materials Guide, (Latest edition)

Roofing and Waterproofing Manual, (Latest edition)

2. GENERAL: Roof insulation, underlayment and vapor barriers for built-up roofing shall be applied to the surfaces as specified herein and as shown on the plans. See Section 7510: Built-up Roofing System.

2.1 Storage of Materials: Insulation and felts shall not be exposed to moisture in any form before, during, or after delivery to the site. Store insulation and felts in an enclosed building or in a trailer. Wet materials shall not be used and shall be removed from the worksite. Felt rolls shall be stacked on end. For 24 hours immediately before laying, materials shall be maintained at a tempeature not lower than 50 F. Insulation shall be stored away from areas where welding is being performed or where contact with open flames is possible.

2.2 Remove Existing Built-Up Roof: The Contractor shall remove existing Built-up roof system which includes the vapor barrier, insulation, roof membranes, underlayments. etc. Unused vent openings in existing roof deck which are less than 8 inches in diameter shall be closed with 20 gage minimum galvanized sheet metal plates which shall extend at least 4 inches beyond the opening in all directions and shall be firmly affixed by flat-head, sheet metal screws to the existing deck. Holes 8 inches or large in diameter shall be closed with new sheathing of the same cross section as the existing roof sheathing. New sheathing shall be anchored on each side to new 2 x 4 nailers. The new 2 x 4 shall be securely fastened in place by nailing and shall extend approximately 6 inches beyond each side of opening. vents and other projections through roof shall he prepared properly for flashing and secured in position. Projecting nails shall be driven home. Contractor shall note any significant unevenness of the roof deck on AF Form 1063 and shall report it to the Contracting Officer within 24 hours.

2.3 Roof Deck Preparations: The roof-deck surface shall be free from ice, frost, and surface moisture and shall be smooth, firm, free from dirt, projections, and foreign materials. Vents and other items penetrating the roof shall be secured in position and properly prepared for flashing. Installation of vapor barrier on structural concrete shall not be scheduled until frothing or bubbling does not occur when hot bitumen is applied to the deck and until the hot bitumen sticks tightly to the deck.

2.4 Application Requirements:

2.4.1 Surfaces shall be inspected and approved prior to application of insulation. Any significant unevenness of the roof deck shall be noted on AF Form 1063 and reported to the Contracting Officer.

2.4.2 All application requirements shown in Section 7510 are applicable to the roof insulation and vapor barrier.

2.4.3 Asphalt shall be heated in accordance with Equiviscous Temp (EVT) standards and applied within the temperature range of EVT +-25 F. Heating kettles shall be provided with a thermometer, and kettlemen shall be in attendance at all times during heating to insure that the maximum temperature specified is not exceeded. Do not use overheated or contaminated bitumens. Temperature of the bitumen at the time it is applied shall be in accordance with the insulation manufacturer's recommendations.

Application temperatures shall be measured at the mop bucket and/or mechanical applicator.

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2.4.4 The first layer (bottom) of insulation shall be hot mopped in place. Method of attachment of the bottom layer of insulation shall be in accordance with insulation and roof manufacturer's recommendations and the requirements specified hereinafter.

2.4.5 Insulation work shall be coordinated with roofing and sheet metalwork so that all material applied each day is waterproofed the same day with the complete roofing system and sheet metal flashings.

Deviations shall be submitted to the Contracting Officer for approval. Contractor shall repair all roof leaks which occur during construction. Contractor shall replace all water damaged materials caused by roof leaks during construction.

2.4.6 QC requirements in Sections 7510-1.3 & 1020-13 are applicable to this specification section.

3. SUBMITTALS:

3.1 Samples: For each type of insulation, underlayment, vapor barrier, nails and mechanical fasteners.

3.2 Manufacturer's Literature: For each type of insulation, vapor barrier, underlayment, nails, mechanical fasteners, and bitumen.

3.3 Computations used for determining the insulation thickness and the average "R-value" for the roof system shall be submitted to the Contracting Officer for approval. See the drawings for the required "R value" of the new roof insulation. When not shown on drawings, provide minimum R-24.0 for flats and average R-24.0 for taper layouts for the bottom layer of insulation. At roof drains, provide a minimum R value of R-6.3 for the bottom layer of insulation. The actual thickness of each layer of insulation varies depending on the insulation type and FM criteria.

3.4 The Contractor shall submit proof that the application of insulation to the wood deck or concrete deck meets the requirements of Factory Mutual's 1-90 Wind Uplift Rating or UL 90 Wind Uplift Rating.

Provide mechanical fasteners, in addition to hot mopping in place, if required by the roof membrane manufacturer, to meet the requirements of FM 1-90 Wind Uplift Rating or UL 90 Wind Uplift Rating.

Fastening pattern for mechanical fasteners shall meet 7250-4.8. The existing wood deck is not fire retardant treated.

4. MATERIALS shall conform to the following requirements:

4.1 Asphalt primer: ASTM D 41.

4.2 Bitumen:

STND [Standard] Roofing Asphalt

4.2.1 Standard Roofing Asphalt: ASTM D 312, Type III for slopes less than or equal to 1-1/2"/ft, Type IV for slopes greater than 1-1/2"/ft.

4.2.1.1 New 4 Ply Mod BUR-STND over Concrete Decks: Use standard asphalt for placing the new vapor barrier, the new bottom layer of insulation, the new top layer of insulation, and the new 4 Ply Mod BUR-STND roof system.

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4.2.1.2 New 4 Ply Mod BUR-STND over Wood Decks: Use standard asphalt for placing the new vapor barrier, and the new 4 Ply Mod BUR-STND roof system.

4.2.1.3 New 3 Ply or 4 Ply Mod BUR-SEBS over Wood and Concrete Decks: Use standard asphalt for placing the new vapor barrier only.

SEBS Roofing Asphalt

4.2.2 Rubber modified SEBS Asphalt: Styrene-Ethylene-Butylene-Styrene asphalt, which has the properties from 7510-2.3. Type III for slopes less than or equal to 1-1/2"/ft, Type IV for slopes greater than 1-1/2"/ft.

4.2.2.1 New 4 Ply Mod BUR-STND: Does not use SEBS asphalt.

4.2.2.2 New 3 Ply or 4 Ply Mod BUR-SEBS over Wood and Concrete Decks: Use SEBS asphalt for placing the new bottom layer of insulation, the new top layer of insulation, and the new 3 Ply or 4 Ply Mod BUR-SEBS roof system.

4.3 Bituminous Cement: ASTM D 4586 and FS SS-C-153, Type I, Class B.

4.4 Roof Insulation - Bottom Layer:

4.4.1 Polyisocyanurate Insulation: FS HH-I-1972,2,3. Polyisocyanurate insulation shall be fire approved and wind uplift rated for Class 1-90 construction by Factory Mutual. The thickness of polyisocyanurate shall be calculated using the R value of R=5.6/inch. Water absorption shall not exceed 1 percent by volume IAW ASTM C 272. Compressive strength shall be 25 psi minimum IAW ASTM D 1621. The insulation layout and any adhesive shall be submitted for approval.

4.4.2 Phenolic Insulation: Not in this contract.

4.4.3 Expanded Polystyrene Insulation (EPS): ASTM C 578, Type II, (superseding FS HH-I-524). EPS shall be fire-approved and wind uplift rated for Factory Mutual 1-90 construction. EPS shall have a density not less than 1.3 PCF. Water absorption shall not exceed 3.0 percent be volume IAW ASTM C

272. Compressive strength shall be 10 psi minimum IAW ASTM D 1621. Required thickness of EPS insulation shall be determined for the R-value shown on the drawings at 40 degrees F. Contractor shall submit for approval the insulation layout & any adhesive being used.

4.4.4 The roof insulation manufacturer shall submit to the contracting officer written authorization that the roofing contractor is an approved applicator for the roof insulation. The roof insulation manufacturer shall ensure that proper application methods are being utilized for the installation of the roof insulation and shall submit a statement of compliance of proper application by the roofing contractor to the Contracting Officer.

4.4.5 The roofing contractor shall notify the project inspector and insulation manufacturer at least 24 hours in advance of placing insulation for the first day.

4.4.6 Mechanically Fasten: When indicated on the delivery order, use FM-approved mechanical fasteners to fasten the bottom layer of insulation to the wood deck.

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4.4.7 When required by the contracting officer, the roofing insulation manufacturer shall provide written certification from an independent third party quality controller [such as UL] confirming that the rigid insulation has been tested and meets the flame spread and smoke developed criteria as well as the physical properties of ASTM C 578.

4.5 Roof Insulation - Top Layer:

4.5.1 Perlite Thermal Insulation Board: ASTM C 728 (superseding Fed Spec HH-I-529). Perlite shall be fire approved and wind uplift rated for Class 1-90 construction by FM. Water absorption shall not exceed

1.5 percent volume 2 hours IAW ASTM C 209.

4.5.2 Asphalt Impregnated Wood Fiberboard: ASTM C 208 (superseding Fed Spec LLL-I-535). Wood fiberboard shall be fire approved and wind uplift rated for Class 1-90 construction by FM, and shall be treated to resist moisture penetration. Water absorption shall not exceed 7 percent volume - 2 hours IAW ASTM C 209. Structodek roof insulation coated board, or approved equal.

4.5.3 The top layer of roof insulation used shall be approved by the bottom layer roof insulation manufacturer prior to installation. Submit to Contracting Officer for approval.

4.6 Nails and Fasteners:

4.6.1 Fasteners:

4.6.1.1 Bolts and nuts shall be semifinished or finished, threaded for medium fit with either hexagonal-shaped or square-shaped nuts and boltheads.

4.6.1.2 Metal disks shall be flat, zinc coated steel and not less than 26 gage thickness. Disks used with nails and fasteners for securing insulation shall be minimum 2 1/8 inch diameter.

4.6.1.3 Plastic disks: Shall be high density molded thermoplastic with smooth top surface, reinforcing ribs and not less than 3 inches in diameter. Disks shall be designed to cause fastener head to recess fully into the disks after driving.

4.6.1.4 The insulation manufacturer shall approve the mechanical fasteners and submit his approval to the Contracting Officer.

4.6.1.5 Fasteners designed to secure insulation to wood decks shall conform to FM 1-90. Provide fasteners as required by roofing manufacturer.

4.7 Vapor-Barrier Membranes:

4.7.1 Felts: Asphalt-impregnated fiberglass felts conforming to ASTM D 2178, Type IV.

4.7.2 Bitumen: Standard Asphalt Type III or IV, solidly hot mop vapor barrier in place.

4.7.3 Polyethylene vapor barrier: Peel and stick in place for new 4 Ply Mod BUR-STND roof systems on wood decks.

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5. APPLICATION OF UNDERLAYMENT/PRIMER:

5.1 New Underlayment - Wood Decks :

5.1.1 Completely cover the wood deck with one ply of rosin-sized paper. Lap each sheet a minimum of 2" and nail sufficiently to hold in place.

5.1.2 Over the rosin-sized paper, apply one ply of fiberglass felt underlayment, with 4-inch side laps and 6-inch end laps. Nail through side laps at 9-inch centers and stagger-nail the center of sheets at 18 inches on center in two parallel rows at 12 inches apart.

5.1.3 Underlayment fasteners shall be galvanized steel or stainless steel fasteners with 1-inch diameter, minimum, round or square cap, such as simplex nails.

5.1.4 Rosin paper is not used when the polyethylene vapor barrier is used.

5.2 New Asphalt Primer - Concrete Decks:

5.2.1 Prime the concrete deck with the asphalt primer at the rate of 1 gallon per square, minimum, and allow to dry.

5.2.2 On new concrete decks, do not start priming until the new concrete has properly cured for 30 days.

5.2.3 Prior to application of the new vapor barrier, all existing joints in the concrete or precast concrete decks shall be covered with a 4 inch strip of SBS Basesheet, embedded in and coated with bituminous cement. Do not hot mop in place.

5.3 Over Wood Decks with Barrel Roofs or Slopes > 2”/ft with No Roof Insulation:

5.3.1 Completely cover the wood deck with one ply of rosin-sized paper. Lap each sheet a minimum of 2" and nail sufficiently to hold in place.

5.3.2 Over the rosin-sized paper, apply one ply of SBS Basesheet with 4-inch side laps and 6-inch end laps.

Nail each basesheet 9 inches on center on side laps and end laps, and stagger-nail the center of sheets at 18 inches on center in two parallel rows at 12 inches apart.

6. APPLICATION OF VAPOR BARRIER:

6.1 Over Concrete Decks or Wood Decks:

6.1.1 Prior to the application of the vapor barrier, the Contractor shall field verify the levelness of the roof deck. Any unevenness of the roof deck which is considered significant by the insulation manufacturer shall be reported to the Contracting Officer within 24 hours and noted on AF Form 1063.

6.1.2 The bitumen-applied vapor barrier shall consist of two plies of asphalt-impregnated fiberglass felts, mopped on at right angles to the direction of slopes. Felts will be solid mopped between plies. Felt shall

7240-7 be laid in 25 pounds of asphalt per square. As each course of felt is mopped into hot bitumen, obtain complete adhesion between plies to eliminate air pockets. The method of mopping a half-sheet width and turning the sheet back to mop under the other half shall not be used.

6.1.2.1 Flood coat the entire surface of the vapor barrier with SEBS bitumen or Type III bitumen (per membrane manufacturer's recommendations) sufficiently to protect the vapor barrier and prevent roof leaks when the insulation is not placed on top of the vapor barrier the same day. Deviations to the placement of the flood coat shall be submitted to the Contracting Officer for approval.

6.1.3 The polyethylene vapor barrier shall be peel and stick in place on the wood deck.

6.1.4 At parapet walls, eaves and rakes, the vapor-barrier shall be extended and turned back 9 inches or separate sheets shall be applied with not less than 9 inches on the roof deck and turned back 9 inches. The turnback shall be mopped in over the top of the vapor barrier. Bitumen or bituminous plastic cement shall be used at eaves and rakes under the vapor barrier for not less than 9 inches. Vapor barrier or separate sheets shall be turned back over edges in insulation board at roof penetrations and locations other than parapet walls, eaves and rakes.

6.1.4 For application procedures of the vapor barrier, see Section 7510.

6.2 On Slopes of 2 Inches or More: Provide treated wood insulation stops according to the roof insulation manufacturer's requirements. Secure cant and tapered edge strips in place with steep asphalt; cut and neatly fit all joints and miters. Insulation board, cant strips, and tapered edge strips that can be readily lifted or displaced by hand are not adequately secured. Reinstall all lifted and displaced items that are not damaged. Replace damaged items with new material. Follow additional applicable requirements of the roof insulation manufacturer and BURS manufacturer.

7. APPLICATION OF FIRST LAYER (BOTTOM LAYER) OF ROOF INSULATION:

7.1 Over Concrete Decks or Wood Decks:

7.1.1 The bottom layer of roof insulation shall be laid in one or two layers over the top of the new vapor barrier. Units of insulation shall be laid in parallel courses perpendicular to the roof slope. End joints shall be staggered. Insulation shall be cut to fit neatly against adjoining surfaces. Joints in successive layers shall be staggered with respect to joints of preceding layer.

7.1.2.1 The existing deck, which is over 20 years old, will experience higher and more frequent deflections than a newly constructed deck.

7.1.2.2 Prior to placing the bottom layer of insulation, the Contractor shall field verify the levelness of the surface that the bottom layer will be going on top of. Any unevenness considered significant by the insulation manufacturer of the bottom layer shall be reported to the Contracting Officer within 24 hours.

7.2 Hot Mop: Over Concrete Decks or Wood Decks:

7.2.1 Secure all insulation boards in full, uniform, and continuous moppings of hot asphalt applied at the rate of 25 pounds bitumen per square, minimum. Due to the unevenness of the deck, the bitumen application rate may vary from 25 to 40 pounds per square. Insulation which can be readily lifted after installation is not considered to be adequately secured and shall be removed and re-asphalted into place.

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7.2.2 For the bottom layer of insulation boards apply hot asphalt with mops only. Use of mechanical spreaders shall not be allowed. The contractor shall determine the percent asphalt adhesion for approximately 5% of the sheets of the bottom layer of insulation after installed in hot asphalt to verify that the insulation is adequately secured. When required by the project manager / project inspector, the verification shall be done in their presence. Results shall be noted on the quality controller’s reports. Fifty percent asphalt adhesion [minimum] is required with each sheet of the bottom layer of insulation hot mopped in place, unless the contractor can demonstrate that the unevenness of the existing deck or other deck problems prevents him from reaching the fifty percent asphalt adhesion.

7.2.3 Bitumen shall not be applied further than one panel length ahead of roof insulation being installed.

7.2.4 The edges of insulation boards adjoining vented nailers shall be kept free of bitumen. A 1/2-to-1-inch air space shall be provided between parapet walls and insulation for use with wood vents hereinafter specified.

7.3 Mechanically Fasten: Over Wood Decks:

7.3.1 Mechanically fasten the first layer [bottom layer] and the second layer [top layer] together with the same set of fasteners securely into the wood deck. See section 7240-8.3 for fastener requirements.

7.4 Tapered Roof Systems:

7.4.1 For tapered roof insulation systems, the Contractor shall submit the roof insulation layout for approval by the Contracting Officer. The layout shall include: thickness of insulation at the roof drains, edges, and high points; slope, location of roof drains, size of each numbered section of insulation, and location of crickets.

7.4.2 The tapered roof system shall have a minimum finished slope of 1/4"/ft unless indicated otherwise on the delivery order. For some roofs, a minimum finished slope of 1/8”/ft will be used.

7.4.3 Crickets shall be provided behind mechanical equipment to divert water away from mechanical equipment.

7.4.4 Ridges, hips, and valleys shall be placed to provide smooth transitions and proper alignment where these panels meet.

7.4.5 Insulation panels on each side of ridge shall meet at the same elevation.

7.5 Protect Insulation:

7.5.1 The insulation shall be kept dry at all times and shall be laid just before application of the roofing felts. No more insulation shall be laid than can be covered the same day with the complete roofing system unless approved otherwise by the Contracting Officer. Exposed edges of the insulation shall be protected by the cutoffs at the end of each days work or whenever precipitation is imminent. Cutoffs shall be two layers of bituminous felt set in plastic bituminous cement. Cutoffs shall be removed when work is resumed.

7.6 Walk-in Insulation:

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7.6.1 Contractor shall carefully "walk-in" each sheet of insulation board of the bottom layer that is hot mopped in place. Contractor shall make sure that the insulation board edges and corners are securely adhered down into the asphalt. Contractor shall neatly and partially cut insulation boards in half or quarters to increase asphalt adhesion.

7.7 Heat Gun:

7.7.1 Contractor shall use an infrared heat gun on the insulation boards placed in hot mopped asphalt to determine the asphalt temperature at point of application. The best application temperature for maximum asphalt adhesion with the insulation shall be determined by the Contractor and reported to the Contracting Officer and then…