Attachment 1 - Specifications.pdf

NATIONAL FORESTS IN NORTH CAROLINA

CROATAN NATIONAL FOREST

PINE CLIFF PICNIC AREA

PICNIC SHELTER CONSTRUCTION

OCTOBER 2009

National Forests in North Carolina Engineering, Recreation and Heritage

Facilities LoneRanger

SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01010 - Summary of Work 01050 - Field Engineering 01300 - Submittals

DIVISION 2 - SITE WORK

02210 - Site Grading 02220 - Structural Excavation 02540 – Erosion and Sedimentation Control 02821 - Seeding

DIVISION 3 - CONCRETE

03100 - Concrete Formwork 03200 - Concrete Reinforcement 03300 - Cast-in-Place Concrete

DIVISION 5 - METALS

05500 - Metal Fabrications

DIVISION 6 - WOOD AND PLASTICS

06100 – Carpentry

DIVISION 7 - THERMAL AND MOISTURE

07110 - Membrane Waterproofing 07129 – Wood Shake Roofing 07920 - Sealants and Caulking

DIVISION 1 - GENERAL REQUIREMENTES

01010 - Summary of Work 01050 - Field Engineering 01300 - Submittals

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

A. The Contractor is to provide the complete construction of Picnic Shelter as specified herein and as shown on the drawings.

B. Storage of Materials

1. The Contractor may store materials and equipment at the work site at his own risk.

All materials must be kept in an area designated by the C.O. and be neat and orderly.

2. The Contractor shall install barricades or tape barriers around all open excavations and storage areas.

C. Construction Schedule

1. A proposed schedule of work for the project construction shall be submitted to the C.O. for approval 10 days prior to starting construction.

D. Existing Facilities & Utilities

1. The Contractor can use the restroom facilities at the picnic area.

2. The Contractor will be required to furnish his own generator for electrical power.

3. Potable water is not available at the site. The Contarctor shall furnish his own water for construction purposes.

E. Safety

1. No trenches will be left open overnight.

SECTION 01050

FIELD ENGINEERING

A. The location and finished floor elevation for the new picnic shelter will be maked on the ground by the COR at the pre-bid conference.

SECTION 01300

SUBMITTALS

A. The Contractor shall be required to furnish the following to the C.O. prior to commencing any work that relates to a respective submittal (four copies of all submittals required).

Submittal shall be identified on a transmittal cover sheet by the specification section they reference and a sequential submission number . The transmittal cover sheet shall provide a space for approval signatures for each item. When submitting product information containing multiple items, clearly identify the model being submitted for approval.

1. Wood Shakes

2. Timbers

3. Hardware

4. Concrete Mix Design

B. The Contractor shall obtain approval in writing before installation of materials.

DIVISION 2 - SITE WORK

02210 – Site Grading 02220 – Structural Excavation 02540 – Erosion and Sedimentation Control 02821 – Seeding, Fertilizing and Mulching

SECTION 02210

SITE GRADING

A. This section covers all required site grading, including excavation and the placement of interior and exterior fills and the final dressing of the site within the construction area.

PART 2 - PRODUCTS

A. Fill Material

1. The material for the interior and exterior fills shall consist of surplus excavated material and imported fill consisting of a mixture of soil, gravel talus rock, disintegrated granite, semi-gravel, sand, caliche, shale, scoria, clinkers, cinders, or other suitable material.

2. The material shall be free from organic vegetative matter.

3. The maximum size of any particle shall not be greater than 3" in diameter.

4. Oversize material may either be removed or broken down to the specified dimension by any method which accomplishes reduction to that size.

5. The removal or the breakdown of oversize material to the specified size shall be done at the material source.

B. Bedding material under concrete slabs shall be NC DOT approved ABC stone.

PART 3 - EXECUTION

A. The Contractor shall supply all fill material.

B. Excavation shall produce surfaces to line and grade shown on drawings. All excavated areas shall drain.

C. The root structure of all existing trees that are to remain shall not be disturbed. Do not operate heavy equipment within 10' of trees that are to remain.

D. Exterior fills shall be constructed to sections and elevations indicated. Exterior fills shall drain.

E. Compact Earth Fills under all concrete slabs, ramps, and footings.

1. Compaction shall be in accordance with Section 02250, Compaction Control and

Testing.

F. When all exterior earthwork is completed, the contractor shall give the entire site a final dressing to assure that all surfaces are in accordance with the elevations indicated on the drawings.

1. Finish grades adjacent to the building shall be sloped as shown on the drawings to provide surface drainage away from the building walls in all directions.

SECTION 02220

STRUCTURAL EXCAVATION

A. This section consists of the necessary excavation for the building foundation and other structures.

A. Silt fence in accordance with Section 02540.

A. Install silt fences or other means of silt entrapment around all structural excavations as directed by the C.O.R.

B. Trenches or foundation pits for structures or structure footings shall be excavated to the lines, grades, and elevations as shown on the drawings. They shall be of size to permit the placing of the full width and length of structure footings or tanks as shown on the drawings.

C. Boulders, logs, or other objectional material encountered in excavation shall be removed.

1. All rock or other hard foundation material shall be cleaned of all loose material, cut to a firm surface, either level, and stepped or serrated as shown on plans or specified herein.

2. All seams or crevices shall be cleaned out and grouted with cement grout.

3. All loose, disintegrated rock and thin strata shall be removed.

4. When concrete is to rest on a surface other than rock, special care shall be taken not to disturb the bottom of the excavation.

D. After each excavation is completed, the Contractor shall notify the C.O. to that effect. No concrete shall be placed until after the C.O. has approved the depth of the excavation and the character of the foundation material.

SECTION 02540

EROSION AND SEDIMENTATION CONTROL

A. This work consists of temporary and permanent measures as shown on the drawings and as specified herein, to prevent and control soil erosion and sedimentation.

B. Related Specifications:

1. 02821 – Seeding

A. Silt fences shall be prefabricated with 1-1/2" square, hardwood posts, Mirafi Silt Fence, or approved equal.

B. Hay bales shall be certified weed free.

A. The Contractor shall monitor the performance of all erosion and sediment control practices and make minor adjustments as needed on a day-to-day basis. Silt fences shall be inspected after each rainfall and sediments deposits must be removed when they reach a maximum of 1/3 the height of the fence. Deteriorated or damaged fabrics must be replaced immediately.

B. Temporary controls shall be dismantled and disposed of after the disturbed soil has been re-vegetated.

SECTION 02821

SEEDING, FERTILIZING, AND MULCHING

PART 1 GENERAL

A. This section covers the seeding of all disturbed areas within the construction limits.

The work shall include fine grading of the areas, soil preparation, and application of lime, fertilizer, seed, and mulch.

PART 2 PRODUCTS

A. Fertilizers shall be spread on the ground surface at the following rates.

Grade 18/46/0 600 lb/acre

B. Seed shall be spread on the ground surface in the following amounts.

Winter 90 lbs/acre

C. All dates shown are guidelines. If weather conditions are abnormal, the CO shall consult with Forest Service Soil Scientist and/or Botanist for additional seeding times.

Permanent Seeding – Spring (2/1 to 8/1):

Virginia Wild Rye: 10 lbs/acre Creeping Red Fescue: 10 lbs/acre Rye (cereal small grain): 30 lbs/acre Little Bluestem: 10 lbs/acre Partridge Pea: 6 lbs/acre

If Seeding – (2/1 to 5/1):

Add 30 lbs./acre Rye (Cereal small grain)

Temporary Seeding:

Foxtail (German) Millet: 30 lbs/acre Partridge Pea: 5 lbs/acre

D. Assure that mulch used on the project is certified noxious weed free by the appropriate authority in the jurisdiction of use.

E. Moisten seeding areas before seeding and maintain the moisture until 3 days after germination.

F. Apply fertilizer by the following methods:

1. Dry method. Incorporate the fertilizer into the upper portion of the seedbed before seeding.

2. Apply seed and fertilizer at rates specified.

3. Apply seed by the following methods:

a. Dry method. Apply the seed with approved power driven seeders, drills, or other mechanical equipment. Hand-operated seeding methods are satisfactory on areas inaccessible to mechanical equipment.

4. Apply mulch within 48 hours after seeding by the following methods:

a. Dry method. Spread all mulch material, except wood and grass cellulose fibers, by a mulch spreader utilizing forced air to blow the mulch material onto the seeded area. Apply straw mulch at designated rate. Anchor the mulch material with an approved stabilizing emulsion tackifier or approved mechanical method. Do not mark or deface structures, pavements, utilities, or plant growth with tackifier. Apply wood fiber or grass straw cellulose fiber mulch at the designated rate. Apply bonded fiber matrix hydraulic mulch at the designated minimum rate. Apply so no hole in the matrix is greater than 0.04 inches. Apply so that no gaps exist between the matrix and the soil.

b. Mulch by hand areas inaccessible to mulching equipment.

5. Protect and care for seeded areas including watering when needed until final acceptance. Repair all damage to seeded areas by reseeding, refertilizing, and remulching. Apply supplemental applications of seed, mulch, fertilizer, lime, or ammonium nitrate.

A. Seeding operations shall be carried out in a timely manner following any and all backfill completion as directed by the COR.

B. All disturbed areas to be seeded shall be graded, leveled, and prepared to receive the grass seed.

C. Application of Lime and Fertilizer - following the grading and leveling operation, lime and fertilizer shall be spread uniformly over the area to be seeded.

D. Seed shall be uniformly sown over the area at the rate specified by hand sowing. The

Contractor may use a hydro-seeding method if approved by the COR.

E. Pine straw or pine needles shall be uniformly spread over the area at the rate specified.

DIVISION 3 - CONCRETE

03100 - Concrete Formwork 03200 - Concrete Reinforcement 03300 - Cast-in-Place Concrete

SECTION 03100

CONCRETE FORMWORK

A. This section covers all formwork, expansion joints, and related accessories.

A. Forms shall be wood, plywood, hardboard, or metal and shall be approved by the Contracting Officer.

B. Form oil shall be nonstaining type.

A. Forms shall be built tight, in proper alignment and adequate to resist the stresses of concrete placement without deformation.

B. Forms shall be constructed to produce the required concrete surface.

SECTION 03200

CONCRETE REINFORCEMENT

A. This section covers all concrete reinforcement and its accessories.

B. The latest editions of the following specifications and codes shall govern.

1. ACI 301, Specifications for Structural Concrete for Buildings.

2. ASTM A615

3. ASTM A185

A. Reinforcing steel shall comply with ASTM A615, intermediate grade 40, unless otherwise shown.

B. Reinforcing mesh shall comply with STM A185 and shall be gauge and mesh indicated.

A. Reinforcement bars and mesh shall conform to the sizes and spacings as shown.

B. Field bending and cutting will be permitted if performed in accordance with above listed Code.

C. Reinforcement shall be free from dirt, oil, paint, grease, mill scale, and loose or thick rust when concrete is placed.

D. Woven wire mesh shall be hooked and/or supported during the placement of concrete slabs to ensure proper embedment as detailed.

E. Anchorage and accessories shall be accurately placed as shown and held rigidly in position during placing of concrete.

F. Depth of cover, radius of bends, and deformations shall be in accordance with ACI 318.

SECTION 03300

CAST-IN-PLACE CONCRETE

A. This section covers cast-in-place concrete, including curing and finishing of concrete.

B. The latest editions of the following specifications and recommended practices shall govern:

1. ACI 301 - Specifications for Structural Concrete for Buildings.

2. ACI 306 - Recommended Practice for Winter Concrete

3. ACI 305 - Recommended Practice for Hot Weather Concrete

C. Notify C.O. 48 hours prior to placing concrete.

A. Aggregate shall conform to the requirements of Federal Specification SS-A-281, Classes 1 and 2, and shall be well graded from fine to coarse within designated limits.

B. Portland, Cement, shall comply with ASTM C150, Type 1. Supplier shall provide mill certification of compliance with specification.

C. Water shall be clean, fresh, and free from injurious amounts of minerals or foreign substances.

D. Concrete Mix Design

1. All concrete shall have a minimum "compressive strength" of 3000 psi at 28 days.

2. Concrete shall be air-entrained and shall contain not less than 3% and not more than 6% entrained air determined by test procedure AASHTO T 152.

3. The design of the concrete mixture shall be the responsibility of the Contractor.

E. Slump shall not exceed 3 inches for vibrated concrete or 5 inches for non-vibrated concrete.

A. "Ready-Mixed Concrete" may be employed if the time interval between mixing at the plant and discharge into the form does not exceed 1-1/2 hours.

B. All concrete shall be placed within 1-1/2 hours from the time of mixing.

1. No concrete shall be placed after it has started its initial set.

2. No concrete with a temperature above 90ºF shall be placed.

C. Concrete shall be placed in such a manner as to avoid segregation of the mixture.

1. Concrete shall be spread in horizontal layers when practicable.

2. No concrete shall be freely dropped more than 5 feet.

3. Depositing a large quantity of concrete and flowing or working it along the forms will not be permitted.

D. Mechanical vibrators shall be used for consolidation of concrete.

1. Concrete shall be consolidated within 15 minutes after placement.

2. If consolidation of concrete with mechanical vibrators is impractical, hand tamping, rodding, and spading will be permitted.

3. A minimum of two vibrators, in working order, shall be on the job during concrete placement.

E. Concrete shall be placed and protected as specified for temperature conditions.

F. Concrete plant standards and truck mixer and agitator standards shall be as recommended by the National Ready Mix Association.

G. Finishing

1. All finishes shall be made without use of cement or other dusting materials.

2. Concrete shall be struck to proper grade and surface finished with float trowels.

3. At all exposed form surfaces, remove all ties, fill all form tie holes and imperfections (i.e., "honeycombing") with dry cement mortar, remove all lines, and then "sack" or finish to match adjacent surfaces.

H. Concrete shall be protected against rapid drying and kept moist for seven days by covering with curing paper with edges sealed.

I. Sampling and Testing

1. Sampling and testing shall be the responsibility of the Contractor, through an approved testing laboratory. The Contractor shall test for strength, air content and slump.

2. Sampling and testing shall be done in accordance with the following test methods:

--Sampling Fresh Concrete....................................AASHTO T-141 --Making and Curing Concrete Compression Test Specimens.............................AASHTO T-23 --Compressive Strength of Concrete Cylinders.....AASHTO T-22 --Percent Entrained Air (Pressure Method)...........AASHTO T-152 --Consistency (Slump) of Concrete.......................AASHTO T-119

3. Testing frequency shall be one sample or test per every 10 c.y. or truck load.

4. Submit copy of test results to Contracting Officer.

DIVISION 5 - METALS

05500 - Metal Fabrications

SECTION 05500

METAL FABRICATIONS

A. Work in this item includes all miscellaneous metal and other related items.

A. Steel pipe for column bases shall be 12” niminal diameter, standard weight in accordance with ASTM a53 Grade B steel.

B. Plate steel shall be A-36 steel.

C. Primer coat shall be DEVGUARD 4141 Rust Preventative Primer, white color

D. Finish coat shall be DEVGUARD 4348, brown color.

A. The Contractor shall provide all framing and falsework necessary for the erection.

B. At final attachment, all miscellaneous metal and other items shall be rigid and secure.

C. After erection, touch up field connections and abraded places on all steel with specified paint.

D. Shop apply one coat of primer and two finish coats.

DIVISION 6 - WOOD AND PLASTICS

06100 - Carpentry

SECTION 06100

CARPENTRY

A. This section includes carpentry.

B. Grading and Standards

1. Southern Pine shall conform to Federal Specification MM-L-751H and to the latest grading rules of the Southern Pine Association. All lumber shall be grade-certified by the Association.

2. Kiln dried lumber shall not exceed 15% moisture content as determined by ASTM

Test Method D-2016; all other lumber shall not exceed 20%.

A. Round columns, beams and rafters shall be cut from 0.60 CCA treated SYP poles per ASTM D- 25 latest version, 50 ft. poles w/ an 8 inch diameter tip. Poles shall be as produced by Cox Industries, Leland, NC Tel. 910-371-3131. Contact person is Jim Norton or Mike Rouse.

B. Roof sheating shall be #1 SYP 2x6 CCA ground contact treated.

C. Rough Hardware - Furnish all items of rough hardware required to complete the work.

Bolts, nuts, and washers shall be hot-dipped galvanized, conforming to ASTM A153.

A. Framing

1. Cut framing square on bearings, closely fitted and accurately set level and plumb to required lines and levels. Secure rigidly in place. Make connections secure at all bearing points.

2. Roof Sheathing

a. Install sheathing perpendicular to run of roof rafters and nail per drawings.

b. As soon as sheathing is in place, over all roof areas with standard asphalt impregnated 30 pound building felt (see Section 07310).

DIVISION 7 - THERMAL AND MOISTURE

07110 - Membrane Waterproofing 07129 - Wood Shake Roofing 07920 - Sealants and Caulking

SECTION 07110

MEMBRANE WATERPROOFING

A. This section covers all membrane waterproofing and related items.

PART 2 - PRODUCTS

A. Vapor barrier shall be 6 mil, clear grade polyethylene.

A. Install vapor barrier under all concrete slabs. Lap and secure edges of vapor barrier to assure tight seal.

SECTION 07129

WOOD SHAKE ROOFING

PART 1 – GENERAL

1.01 SUMMARY

A. Section Includes:

1. Installation of wood shake roofing system.

B. Related Sections:

1. Section 06100 Carpentry

2. Section 07920 Sealants and Caulking

1.02 REFERENCES

A. American Society fro Testing and Materials: ASTM D226 Specification for Asphalt-Saturated

Organic Felt Used in Roofing and Waterproofing

B. National Roofing Contractors Association: The NRCA Roofing and Waterproofing Manual, section on Wood Shakes and Wood Shake Roofing.

C. Cedar Shake & Shingle Bureau: Installation and Maintenance Manual.

1.03 QUALITY ASSURANCE

A. Qualifications: Roofers will be trained or qualified in installation techniques and procedures of wood shake roofing and will demonstrate a minimum of 5 years successful experience in such work. Architect reserves right to reject roofers not meeting qualifications.

1.04 SUBMITTALS

A. Product Literature: Technical product data installation instructions and product literature.

B. Samples:

1. Full range of full sized shakes for shape, cut, size and texture. Minimum of 10 shakes.

2. Each type of fastener.

C. Field Samples: Construct 4 foot x 4 foot panel of shake installation, including all underlayments and membranes.

D. Maintenance Stock: 5% of wood shakes used.

E. Guarantee: Provide a manufacturer’s or installer’s guarantee covering both material and workmanship. Roof guarantee will be for a period of five years from Date of Substantial

Completion.

F. Warranty: Provide five year workmanship warranty.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Packaging and Shipping:

1. Deliver materials in manufacturer’s unopened bundles, rolls or containers with labels intact.

B. Storage and Protection:

1. Store materials on raised platforms.

2. Cover materials with tarpaulins or plastic in a manner to provide air circulation.

PART 2 – PRODUCTS

2.01 MATERIALS

A. Wood Shakes:

1. Material: Premium grade Certi-Split® hand-split wood shakes, western red cedar, clear heartwood, 100% edge grain, no defects.

2. Preservative Treatment: Certi-Last® Pressure Impregnated preservative treatment

3. Size and Exposure:

a. Thickness: 1/2" medium

b. Length: 24 inches, tapered

c. Width: 4” minimum, 8” maximum

d. Exposure: 7-1/2” maximum

B. Felt Underlayment: 30 lb. asphalt saturated organic felts, unperforated, ASTM D 226.

C. Continuous Ventilation Underlayment: “Cedar Breather”, manufactured by Benjamin

Obdyke.

D. Ice & Water Barrier: “Ice & Water Shield”, manufactured by W. R. Grace.

E. Fasteners: 11 or 12 gauge barbed shank stainless steel roofing nails, 3/8 inch heads, length sufficient to penetrate ¾ inches into decking.

F. Roofing Cement: ASTM D2822; plastic cement for use with specified shakes.

PART 3 – EXECUTION

3.01 INSTALLATION

A. Underlayment:

1. Nail metal edge flashing directly to deck as detailed.

2. Starting at the low edge of the roof, lay one layer of ice & water membrane horizontally over the entire roof edge. Lap edges per manufacturer’s instructions.

3. Secure underlayment with minimum recommended fasteners to hold it in place until shakes are applied.

B. Shake Coursing:

1. Use a double layer of shakes as a starter course, projecting shakes 1-1/2 inches beyond sheathing. Nail starter course using the same spacing as for shakes.

2. Snap chalk lines parallel to eaves at appropriate intervals to keep shakes in alignment.

3. Install shakes, spacing adjoining shakes no less than 3/8” and no more than 5/8”.

4. Nail each shake with two nails spaced 3/4" to 1” inch from edge of shake and 1-1/2 inches above butt line of subsequent course. Nails to be driven flush but not so that the nail head crushes the wood. Nail heads will be concealed by subsequent course.

5. Lay a horizontal layer of felt underlayment over each course per detail.

6. Stagger edge joints a minimum of 1-1/2 inches in succeeding courses.

7. Cut and fit shakes at ridges and edges to provide maximum weather protection.

C. Ridges:

1. Ridge shakes will be cut from shakes used to cover the roof.

2. Install saddle ridges per manufacturers details, using material of uniform width, alternating overlap.

3. Set upper ridge shakes in roof cement and fasten as indicated.

3.02 INSPECTION

A. Inspect roof and correct any deficiencies prior to final completion.

SECTION 07920

SEALANTS AND CAULKING

A. This item includes the furnishing and installation of all sealants and other related items necessary to complete the project.

B. Product Handling

1. Deliver sealants and related accessories to the job site in factory-sealed, unopened containers bearing manufacturer's name and product designation.

2. Store in unopened containers. Follow manufacturer's recommendations for storage temperatures and shelf life.

3. Follow manufacturer's recommendation for handling products containing toxic materials. Keep flammable material away from heat, sparks, and open flame. Use recommended solvents and cleaning agents for cleaning tools, equipment, and skin.

A. All sealants, primers, and accessories shall be nonstaining to adjacent exposed materials.

1. Products having similar application and usage shall be of the same manufacturer and type.

2. Unless otherwise specified, color shall be selected from approved manufacturer's standard range.

3. Use gum-consistency compounds unless otherwise required by job conditions.

B. Sealants shall be Tremco "Mono," one-part acrylic terpolymer sealant or approved equal.

C. Backer rod shall be polyethylene or polyurethane foam rod.

A. Clean all joints, removing all foreign matter such as dirt, dust, moisture, frost, rust, mill scale, paint, lacquer, and protective coatings. All joints shall be free of loose particles.

1. Use no cleaning solvents which leave residue. Wipe joints free of solvent using clean, dry white cloths or white lintless paper. Do not permit solvent to air dry.

B. Apply materials in accordance with manufacturer's written instructions.

C. Use masking tape when practical to control lap of materials onto adjacent surfaces or to facilitate tooling. Remove tape immediately after caulking and sealing.

D. Colored sealants shall be installed to match the surrounding material colors.

1. If the condition does not clearly present the proper color solution, refer the question to the COR.

E. Clean adjacent surfaces soiled by caulking and sealing operations.