DRAFT_NIST_WWVB_Tower_8Anchor_Repair_Specs_2014.09.pdf

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NIST WWVB Tower 8 Repair Guy Wire Anchor

TECHNICAL SPECIFICATIONS

PREPARED FOR

NIST

BOULDER, CO

September 2014

7979 E Tufts Ave., Suite 800 Denver, CO 80237

(303) 771-6868

Attachment 3

SB1341-18-RP-0009

SECTION 02581 – ANTENNA TOWER ALIGNMENT

SECTION 03930 CONCRETE REHABILITATION

SECTION 05030 METAL FINISHES COLD GALVANIZING COMPOUND

SECTION 05040 HOT DIP GALVANIZING

SECTION 05500 METAL FABRICATIONS

DIVISION 2 EXISTING CONDITIONS

02 41 19 SELECTIVE SITE DEMOLITION

DIVISION 26 ELECTRICAL

26 05 00 BASIC ELECTRICAL REQUIREMENTS

26 05 13 WIRES AND CABLES

26 05 26 GROUNDING AND BORING

26 05 27 SUPPORTING DEVICES

26 05 33 CONDUIT BOXES

26 05 53 ELECTRICAL IDENTIFICATION

26 08 00 ELECTRICAL TESTING ACCEPTANCES AND

CERTIFICATION

26 24 16 PANEL BOARDS

DIVISION 31 EARTHWORK

31 10 00 SITE CLEARING

31 20 00 EARTH MOVING

31 23 19 DEWATERING

DIVISION 32 EXTERIOR IMPROVEMENTS

32 31 13 CHAIN LINK FENCES AND GATES

SECTION 02581

ANTENNA TOWER ALIGNMENT

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Vertical alignment of 4 (four) 400’ [123 m] cable guyed towers.

2. Verification of alignment of all towers.

1.2 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

B. TIA/EIA-222-F Structural Standards for Steel Antenna Towers and Antenna Supporting Structures.

C. Occupational Safety and Health Administration (OSHA) Standards for the Construction Industry

1.3 DEFINITIONS

A. Plumb – vertical alignment of the centerline of tower from base to top as defined by TIA/EAI- 222-F.

B. Twist – angular rotation in a horizontal plane of the tower cross-section as defined by TIA/EIA- 222-F.

1.4 SUBMITTALS

A. Submit written plan of operations describing the process to plumb the towers and eliminate twist.

B. Submit certification of calibration of surveying instruments.

C. Submit certification of calibration of cable tension measurement instruments.

1. Tolerance shall be not less than 1% of the actual reading.

2. Accuracy of load-measuring device shall be performed by an independent testing agency.

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D. Submit final guyed cable tension reading as specified herein.

E. Submit with bid proposal - Qualification Data: For firms and persons to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners, and other information to demonstrate qualifications to perform the work.

F. Submit certificates for fall protection training (If applicable).

G. Submit certification and certification data by surveyor that towers are within tolerances for vertical alignment (plumb and twist).

1.5 QUALITY ASSURANCE

A. Contractor Qualifications: A firm experienced (in last 5 years) in tower work similar to those indicated for this Project and with a record of successful in-service performance, as well as sufficient expertise to produce required results.

B. Surveyor Qualifications: registered surveyor licensed to practice in the State of Colorado.

C. Certificates of calibration to be dated no later than 30 days prior to Notice to Proceed.

1.6 WORK SEQUENCE AND SCHEDULE

A. The contractor shall submit a written work plan to the CO prior to beginning the work.

1. Work plan shall clearly define the means and methods that the contractor intends to use in straightening the tower.

2. Work plan shall include a plan of operations containing a schedule for the work, including all tasks necessary to complete the work and the sequence in which they must be completed.

Start, late start, early finish, and any float time shall be included in the schedule.

1.7 SITE CONDITIONS

A. The contractor is responsible for work site safety.

1. All persons retained to perform the work shall be properly trained and fall protection certified.

B. The contractor shall be responsible for the tower and array while performing the work. Any damage to the towers or array caused by the contractor’s negligence shall be repaired at the contractors cost.

1.8 GUARANTY

A. The contractor shall guarantee his work for a period of not less than 12 months. He shall, at his cost, re-straighten any work found to be out of the ranges specified herein.

PART 2 EXECUTION

2.1 TOWER STRAIGHTENING

A. Tensioning, measuring and surveying of towers shall be done on a calm, relatively windless day.

1. When average wind speeds are above 10 mph alignment work shall not proceed.

B. The Contractor shall provide all of the necessary tools for loosening and tightening the cables.

C. The Contractor shall true the towers to the following criteria of Plumb and Twist:

1. Plumb: The contractor shall provide documented proof that the horizontal distance between the vertical centerlines at any two elevations shall not exceed 0.25 percent of the vertical distance between the two elevations.

2. Twist: The contractor shall provide documented proof that the twist (angular rotation in the horizontal plane) between any two elevations shall not exceed 0.5 degrees in 10 feet and the total twist in the structure shall not exceed 5 degrees.

D. The contractor shall have a registered land surveyor take the necessary measurements and complete the computations necessary to complete the TIA/EIA form found in Appendix “A” of this specification. The surveyor, licensed to practice in the state of Colorado, will then attest to the accuracy of the measurements and computations.

E. Should the calculations prove that the tower’s are out of the TIA/EIA range specified the contractor shall at his own cost readjust the tower until it meets the requirements for plumb and twist.

F. Should the survey instruments prove to be out of calibration at the end of the straightening process then the instrument shall be recalibrate, the plumb and twist of the tower’s will be resurveyed, and the straightening process repeated if necessary.

2.2 CABLE TENSIONS

A. When the tower has been straightened to the tolerances specified herein and certified to be so by a registered surveyor, the contractor shall measure the tension in each of the of the guy wires.

1. The tension in each of the guys should be within plus or minus 5 percent of the values published in appendix "B" of this specification.

2. The contractor is to notify the CO if the guy tension falls outside this range.

B. The contractor shall use a Dynatension – Model P1000 as manufactured by Dynatension Technologies, Inc., or a CO approved equal, for the measurement of tensions in the guy wires.

C. When measuring the tension in the guy wires the contractor shall use the following procedure:

1. Under calm wind conditions the contractor shall take ten readings on each cable.

2. The highest and lowest readings shall be thrown out and the remaining eight readings shall be averaged.

3. Along with the average the contractor shall compute the standard deviation for the eight readings.

4. The ten tension readings, average and standard deviation shall be recorded and submitted to the CO.

PART 3 MEASUREMENT AND PAYMENT

3.1 MEASUREMENT AND PAYMENT

A. The contractor will be paid a lump sum when it has been determined that his work has satisfied the criteria for plumb and twist as specified herein for all of the towers in the array.

END OF SECTION

SECTION 03930

CONCRETE REHABILITATION

PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Poxy crack injection

1.3 UNIT PRICES

A. Unit prices include costs of field quality-control testing required by the Work for which the unit price applies.

B. Epoxy Crack Injection: Work will be paid for by the linear foot of crack injected.

1.4 SUBMITTALS

A. Product Data: Include material descriptions, chemical composition, physical properties, test data, and mixing and application instructions.

1. Include Material Safety Data Sheets, if applicable.

B. Product Certificates: Signed by manufacturers certifying that products furnished comply with requirements and are recommended by manufacturer for uses indicated.

C. Qualification Data: For installers to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners, and other information specified.

1. For products required to be installed by workers approved by product manufacturers, include letters of acceptance by product manufacturers certifying that installers are approved to apply their products.

D. Rehabilitation program for each phase of the rehabilitation process, including protection of surrounding materials and Project site during operations. Describe in detail the materials, methods, equipment, and sequence of operations to be used for each phase of the Work.

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1. If alternative materials and methods to those indicated are proposed for any phase of rehabilitation work, submit substitution request to the CO and provide a written description of proposed materials and methods, including evidence of successful use on other comparable projects, and a testing program to demonstrate their effectiveness for this Project.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: The General Contractor shall retain installers that employ workers trained and approved by manufacturer to epoxy crack injection materials.

B. Manufacturer Qualifications: All manufacturers shall have factory-trained representatives who are available for consultation and Project site inspection at no additional cost.

C. Source Limitations: Obtain each of the following through one source from a single manufacturer:

1. Epoxy crack injection materials.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to Project site in manufacturer's original and unopened containers, labeled with type and name of products and manufacturers.

B. Comply with manufacturer's written instructions for minimum and maximum temperature requirements and other conditions for storage.

1.7 PROJECT CONDITIONS

A. Environmental Limitations for Epoxies: Do not apply when air and substrate temperatures are outside limits permitted by manufacturer. During hot weather, cool epoxy components before mixing, store mixed products in shade, and cool unused mixed products to retard setting. Do not apply to wet substrates unless approved by manufacturer.

1. Use only Class A epoxies when substrate temperatures are below or are expected to go below 40 deg F within 8 hours.

2. Use only Class A or B epoxies when substrate temperatures are below or are expected to go below 60 deg F within 8 hours.

3. Use only Class C epoxies when substrate temperatures are above 60 deg F .

4. When mean daily air temperature is below 25 deg F provide enclosure and heat to maintain temperatures above 32 deg F within the enclosure for 48 hours after repair.

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PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the following:

B. Products: Subject to compliance with requirements, provide one of the following:

1. Epoxy Crack Injection Adhesive:

a. Sika Corporation; Sikadur 35 Hi-Mod LV

b. KEMKO 068 Lo Vis IR

c. Simpson Strong- TIE

2.2 MIXES

A. Mix products in clean containers according to manufacturer's written instructions.

1. Add clean silica sand and coarse aggregates to products only as recommended by manufacturer.

2. Do not add water, thinners, or additives unless recommended by manufacturer.

3. When practical, use manufacturer's premeasured packages to ensure that materials are mixed in proper proportions. When premeasured packages are not used, measure ingredients using graduated measuring containers; do not estimate quantities or use shovel or trowel as unit of measure.

4. Do not mix more materials than can be used within recommended open time. Discard materials that have begun to set.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Notify CO seven days in advance of dates when areas of cracks to be injected are located.

B. Locate areas of cracked concrete to be injected. Mark areas for injection.

3.2 PREPARATION

A. Protect people, motor vehicles, equipment, surrounding construction, Project site, plants, and surrounding buildings from injury resulting from concrete rehabilitation work.

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1. Protect adjacent equipment and surfaces by covering them with heavy polyethylene film and waterproof masking tape. If practical, remove items, store, and reinstall after potentially damaging operations are complete.

2. Neutralize and collect alkaline and acid wastes for disposal off Owner's property.

3. Dispose of runoff from wet operations by legal means and in a manner that prevents soil erosion, undermining of paving and foundations, damage to landscaping, and water penetration into building interiors.

4. Where half or more of the perimeter of reinforcing bar is exposed, bond between reinforcing bar

5. Thoroughly clean removal areas of loose concrete, dust, and debris.

3.3 APPLICATION

A. Epoxy Crack Injection: Comply with manufacturer's written instructions and the following:

1. Clean areas to receive capping adhesive of oil, dirt, and other substances that would interfere with bond, and clean cracks with oil-free compressed air or low-pressure water to remove loose particles.

2. Place injection ports as recommended by epoxy manufacturer, spacing no farther apart than thickness of member being injected. Seal injection ports in place with capping adhesive.

3. Seal cracks at exposed surfaces with a ribbon of capping adhesive at least 1/4 inch thick by 1 inch wider than crack.

4. Inject cracks wider than 0.003 inch to a depth of 8 inches or to a width of less than 0.003 inch , whichever is less.

5. Inject epoxy adhesive, beginning at widest part of crack and working toward narrower parts. Inject adhesive into ports to refusal, capping adjacent ports when they extrude epoxy. Cap injected ports and inject through adjacent ports until crack is filled.

6. After epoxy adhesive has set, remove injection ports and grind surfaces smooth.

7. Provide a UV resistant coating over cracks that have been injected.

3.4 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified testing agency to provide visual inspection of injecede cracks and certify that the cracks have been repaired in compliance with this specification.

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SECTION 05030

METAL FINISHES COLD GALVANIZING COMPOUND

1.1 SECTION INCLUDES

A. Cold Galvanizing of structural steel members, assemblies and metal fabrications.

1.2 RELATED SECTIONS

A. Section 05500 Metal Fabrications

1.3 REFERENCES

A. SPECIFICATION CONFORMANCE DATA

1. Federal Specification DOD-P-21035A (formerly MIL-P-21035) Galvanizing Repair Specification;

2. Federal Specification MIL-P-26915A(USAF Zinc Dust Primer);

3. Federal Specification TT-P-460 (Type I, Zinc Dust);

4. Canadian Government Specification 1-GP-181A (Zinc Coating).SUBMITTALS

B. REFERENCE STANDARDS Steel for fasteners:

1. American Society for Testing and Materials (ASTM): A 239 Locating the Thinnest Spot in a Zinc (Galvanized) Coating in Iron or Steel Articles by the Preece Test (Copper Sulfate Dip);

a) 780 Repair of Damaged Hot-Dip Galvanizing:

b) 117 Salt Spray (Fog) Testing;

c) 520 Type III Specification for Zinc Dust (Metallic Zinc Powder);

d) 376 Measuring Coating Thickness by Magnetic-Field or Eddy Current (electromagnetic) Test Methods.

2. Steel Structures Painting Council (SSPC)

a) SSPC-PS 12.00 Guide to Zinc-Rich Coating Systems.

b) SSPC Paint 20 Zinc-Rich Primers, Type II, Organic.

c) SSPC-SP1 Surface Preparation Specification No. 1, Solvent Cleaning.

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d) SSPC-5P3 Surface Preparation Specification No. 3, Power Tool Cleaning.

e) SSPC-5P6 Surface Preparation Specification No. 6, Commercial Blast Cleaning.

f) SSPC-SP1O Surface Preparation Specification No. 10, Near White Blast Cleaning.

1.4 DEFINITIONS

A. Cold Galvanizing: A method of applying a zinc coating to structural steel members, assemblies and fabrications at ambient temperatures to achieve long-term corrosion protection.

B. Cathodic Protection: Reduction or prevention of corrosion of a metal surface by making it a cathode in an electrolytic cell.

C. Galvanic Action: When two dissimilar metals come into electrical contact with each other in the presence of an electrolyte, the less noble metal (zinc) will sacrifice itself (corrode) to protect the more noble metal (steel, iron, or aluminum).

1.5 SYSTEM DESCRIPTION

A. A metallic zinc coating, containing 95% zinc in the dried film, that imparts cathodic protection to ferrous and nonferrous metals through it's galvanic action and is recognized by Underwriter's Laboratories, Inc. as an equivalent to commercial hot-dip galvanizing. This coating, in its dry form, is non-toxic and essentially free of such heavy metals as lead, cadmium, barium, antimony, arsenic, chromium, copper, mercury, molybdenum, selenium, silver and tellurium.

1.6 SUBMITTALS

A. Subcontractor shall furnish the CO (Contracting Officer) with certification that the materials furnished under this specification meet or exceed the requirements herein.Material to be chemically suitable for galvanizing.

B. Subcontractor shall furnish the CO with certification that surface preparation of the substrate to be coated has been performed satisfactorily, as herein specified.

1.7 DELIVERY, STORAGE, AND HANDLING

A. PACKING AND SHIPPING: Aerosols (12 oz.), half-pints (1.5 lb.), quarts (6 lb.), gallons (24 lb.) or 3.5 gallon (84 lb.) containers of types suitable to prevent leakage of contents.

B. ACCEPTANCE AT SITE: Material shall be accepted at site providing no damage deleterious to products' function is visible and applicable material safety data sheets are present EXECUTION.

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C. STORAGE AND PROTECTION: Do not store containers above 104 degrees F. Store containers out of sunlight and away from heat and sparks. Keep containers away from children.

1.8 PROJECT/SITE CONDITIONS

A. Drying time of coating is dependent upon temperatures, but product has no application temperature limit.application of coating

B. Surface temperature of the substrate to be coated shall be at least 5°F above the dew point to avoid possible condensation.

C. Humidity shall be less than 85% R.H.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. ZRC Worldwide (or CO approved equal), 145 Enterprise Drive, Marshfield, Massachusetts 02050, Tel. 781-319-0400 Fax. 781-319-0404, Toll Free. 1-800-831- 3275, Email: info@zrcworldwide.com Product Names: Z.R.C. Cold Galvanizing Compound

2.2 MATERIALS

A. SPECIFICATIONS

1. Type -Single pack, premixed, ready to apply, U.L. recognized, liquid organic zinc compound.

2. Finish -Flat light gray.

3. Theoretical coverage -450 square feet per gallon at 1.5 mil dry film thickness.

4. Metallic zinc content -95% by weight in dry film.

Flash point -104 degrees F (SETA method, ASTM D-3278).

5. Weight per gallon -24 lbs.

6. Solids content -52% by volume (ASTM D-2832).

7. VOC content -385 g/l (3.3 lbs/gal) (ASTM D-1475).

8. Viscosity -1900 cps. - Brookfield spindle #6 at 100 RPM at 25 degrees C (ASTM D- 2196).

9. Maximum service temp. -750 degrees F (ASTM D-2485).

10. Specific gravity -2.797 (ASTM D-1963)

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11. Electrical conductivity -73 million ohms per 3 mil dry.(Resistivity).

12. Impact resistance -Greater than 30 inch lbs. (extrusion per ASTM D-2794).

13. Abrasion resistance -11.5 liters per dry mil (tested at 3 dry mils per ASTM D-968).

14. Pot life -At least 24 hours.

15. Shelf life -Bulk type, 3 years minimum. Aerosol type, l year minimum.

16. Dry time -(Set to touch) When ambient air dried, 20-30 minutes (ASTM D-1640).

17. Recoat time -(Second coat) After 12 hrs. Under certain conditions, recoat time can be reduced. Please contact manufacturer for specifics.

B. SUBSTRATE ACCEPTABLE FOR COATING

1. Substrates shall be of iron, steel or aluminum including structural shapes, pipe, sheet, fabrications and assemblies.

2. Substrates of iron, steel or aluminum may be satisfactorily coated regardless of carbon, phosphorus, manganese or silicon inclusion.

2.3 EQUIPMENT

A. Coating shall be applied by brush, roller, low pressure compressor-type spray or airless-type spray (Aerosol spray application is prohibited).

2.4 MIXES

A. Coating herein specified is a a one-component, premixed, ready to apply compound.

B. Contents of containers shall be stirred well upon opening and during application to ensure homogeneous mix.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Iron, steel, or aluminum surfaces to be coated shall be clean; i.e. devoid of grease, oil, mill scale, oxidation, loosely adherent rust, paint, etc.

B. Coating shall be applied directly to metal surface to be galvanically active.

3.2 PREPARATION

A. Surface preparation is dependent upon substrate condition and intended service. The intended service for this project will be “Water Immersion”

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B. Typical examples are as follows:

1. Grease and Oils - Solvent clean to SSPC-SP1

2. Rust scale or easy to remove paint - Power tool clean to SSPC-SP3

3. Mill scale or firmly adhered paint - Sandblast to SSPC-SP6 (commercial)

4. Water immersion - (100 degrees F maximum) Sandblast to SSPC-SP10(near-white)

3.3 APPLICATION

A. GENERAL APPLICATION INFORMATION

1. The coating shall be applied at sufficient wet film thickness to achieve a minimum dry film build of 2.5 - 3.5 mils, using manufacturer's recoat time directions.

2. The coating has good brushing properties and is suitable for spray application, when such application is specified

3. The coating has good brushing properties and is suitable for spray application, when such application is specified

4. The coating shall be well stirred before use so that it is completely homogeneous during application.

5. Continuous agitation (by means of an in-pot power mixer) is strongly recommended to ensure the continuous application of a completely homogeneous material at all times.

6. Omit coating of surfaces to be welded in the field.

7. Material partially used at the end of any day shall be protected from skinning by placing thin blanket of solvent over remaining coating followed by careful closing of containers. Coating may be reused on the following day after total rehomogenization.

B. SPECIFIC APPLICATION INFORMATION

1. APPLICATION BY BRUSH OR ROLLER

a) Apply as received in container.

2. APPLICATION BY LOW-PRESSURE COMPRESSOR TYPE SPRAY:

a) Atomized air pressure- 50lbs.

b) Fluid pressure- 15-20 lbs.

c) Orifice of tip- 80/100ths (.80).

d) Viscosity reduction- 4 parts Coating to 1 part XXX Thinner or 16 parts Coating to 1 part Xylon/Xylene.

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3. APPLICATION BY AIRLESS TYPE SPRAY:

a) Pump - 30:1.

b) Hose - 1/2" (I.D.) Airless type.

c) Orifice of tip - 600 - 26/1000 ths. (.026).

d) Type of tip - Tungsten carbide, reversing (self-cleaning).

e) Filter screens - Complete removal is recommended. If screens are employed, use no less than 30 mesh.

f) Viscosity - No reduction required.

g) Recommended procedure - Connect hose directly to pump without filter assembly, ensuring a hose length of 50 feet maximum. Use least pressure possible. Start at 1500 lbs. and increase as required for good spraying properties.

C. CLEAN-UP

1. Use XXX Thinner (from ZRC Worldwide) or Xylol/Xylene (or CO approved equal).

3.4 FIELD QUALITY CONTROL

A. Inspect installed galvanized materials, fabrications and assemblies for coating thickness in accordance with ASTM E-376.

3.5 FIELD QUALITY CONTROL

A. After erection, on all uncoated areas, prepare and apply coating per Section 3.03 above.

B. Touch-up any areas where shop coat has been damaged in accordance with ASTM A- 780.

3.6 PROTECTION

A. Only if desired, after 24-48 hours, cold galvanizing coating can be top-coated with acrylic, chlorinated rubber, epoxy, urethane or vinyl type products.

B. DO NOT TOP-COAT with alkyd or lacquer type products.

PART 4 - MEASUREMENT

4.1 MEASUREMENT

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A. Measurement for METAL FINISHES will be made on a contract lump sum basis including surface preparation, application of coating specified and the installation and removal of all items of public health and environmental protection required.

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SECTION 05040

HOT DIP GALVANIZING

PART 1 - GENERAL

1.1 WORK INCLUDED

A. Hot dip galvanizing of iron and steel materials.

1.2 RELATED WORK

A. Steel materials, fabrications, and assemblies are specified to be furnished and installed in various other sections.

1. Section 05500 Structural Steel.

1.3 QUALITY ASSURANCE

A. Publications:

1. American Galvanizers Association (AGA).

a. Inspection of Products Hot Dipped Galvanized After Fabrication.

b. The Design of Products to be Hot Dipped After Fabrication.

c. Recommended Details of Galvanized Structures.

2. The Research Council on Structural Connections of the Engineering Foundation:

Specification for Structural Joints Using ASTM A325 of A490 Bolts.

B. Reference Standards:

1. ASTM A123-97a Zinc (Hot-Dipped Galvanized) Coatings on Iron and Steel Products.

2. ASTM A143 Safeguarding Against Embrittlement of Hot-Dipped Galvanized Structural Products and Procedure for Detecting Embrittlement.

3. ASTM A153 Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

4. ASTM A384 Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Articles.

5. ASTM A385 Providing High-Quality Zinc Coating (Hot-Dip).

6. ASTM A780 Repair of Damaged Hot-Dip Galvanized Coatings.

7. SSPC-SP11 Power Tool Cleaning to Bare Metal by the Society for Protective Coatings (SSPC).

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C. Coating Applicator: Company specializing in hot dip galvanizing after fabrication and following the procedures of the Quality Assurance Manual of the American Galvanizers Association.

1.4 SUBMITTALS

A. Submit an original and two copies of the coating applicator’s notarized Certificate of Compliance that the hot dip galvanized coating meets or exceeds the specified requirements of ASTM A123, A767 or A153 as applicable.

1.5 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Load, store, and protect galvanized articles until delivery in accordance with accepted industry standards.

PART 2 - PRODUCTS

2.1 ACCEPTABLE COATING APPLICATORS

A. Members of the American Galvanizers Association.

2.2 MATERIALS

A. Material for galvanizing to be geometrically suitable for galvanizing as described in ASTM A384 and A385.

1. Steel materials suitable for galvanizing include structural shapes, pipe, sheet, fabrications and assemblies.

B. Material to be chemically suitable for galvanizing.

C. Recommended steel materials for hot dip galvanizing included, but are not limited to:

1. Structural shapes and plates: ASTM A36, A242 type 2, A283, A441, A500, A501, A529, A572, and A588.

2. Steel for fasteners:

a. Bolt material: A307 Gr A or B, A325 Type 1, A394, A449, A354 Br BC.

b. Nut material: A563 Gr A, A563 Gr DH, A563 Gr A, A563 Gr C, A563 Gr DH.

3. Steel for sheet metal articles: ASTM A569 or A570.

4. Steel for pipe or tubing: ASTM A53, A120, or A595 Gr A or B.

2.3 FABRICATION REQUIREMENTS

A. Fabricate structural steel in accordance with Class III guidelines as described in AGA’s Recommended Details for Galvanized Structures.

B. Fabrication practices for products to be in accordance with the applicable provisions of ASTM A143, A384, and A385, except as specified herein.

1. Avoid fabrication techniques which would cause distortion of embrittlement of the steel.

C. The fabricator shall coordinate with the hot dip galvanizer and CO regarding potential problems or potential handling problems during the galvanizing process which may require modification of design before fabrication proceeds.

D. Remove all welding slag, spatter, anti-spatter compounds and burrs prior to delivery for galvanizing.

E. Provide holes and or lifting lugs to facilitate handling during galvanizing.

F. Avoid unsuitable marking paints.

1. Coordinate with the galvanizer on removal of grease, oil paint and other deleterious material prior to fabrication.

G. Remove by blast cleaning (or other methods) all surface contaminants and coating which would not be removable by the normal chemical cleaning process in the galvanizing operation.

PART 3 - EXECUTION

3.1 SURFACE PREPARATION

A. Pre-clean steel work in accordance with accepted methods to produce an acceptable surface for quality hot dip galvanizing.

3.2 APPLICATION OF COATING

A. Galvanize steel members, fabrications, and assemblies after fabrication by the hot dip process in accordance with ASTM A123.

B. Galvanize bolts, nuts and washers and iron and steel hardware components in accordance with ASTM A153.

C. Safeguard products against steel embrittlement in conformance with ASTM A143.

D. Handle all articles to be galvanized in such a manner as to avoid any mechanical damage and to minimize distortion.

3.3 COATING REQUIREMENTS

A. Coating weight:

1. Conform with paragraph 5.1 of ASTM A123, Table 1 of A767, or Table 1 of ASTM A153, as appropriate.

B. The test method used to determine the supplied thickness of zinc coating shall be by Magnetic Thickness Measurement as per ASTM A123 Section 7.2.1.

C. Surface finish:

1. Continuous, adherent, as smooth and evenly distributed as possible and free from any defect detrimental to the stated end use of the coated article.

D. Adhesion:

1. Withstand normal handling consistent with the nature and thickness of the coating and normal use of the article.

3.4 TESTS

A. Inspection and testing of hot dip galvanized coating shall be done under the guidelines provided in the AGA publication “Inspection of Products Hot Dip Galvanized After Fabrication”.

B. Include visual examination and tests in accordance with ASTM A123, A767, or A153 as applicable to determine the thickness of the zinc coating on the metal surface.

C. Furnish Notarized Certificate of Compliance with ASTM Standards and Specifications herein listed.

1. The Certificate must be signed by the galvanizer and contain a detailed description of the material processed.

2. The Certificate shall include information as to the ASTM standards uses for the coating.

3.5 REPAIR OF DAMAGED COATING

A. The maximum area to be repaired is defined in accordance with ASTM A123 Section 4.6.

B. Repairs of damaged areas that will be hidden by construction shall be accomplished prior to installation.

C. Repair areas damaged by welding, flame cutting, or during handling, transport or erection according to the approved method and ASTM A780.

1. The approved method of repair shall be by use of repair paint containing zinc dust.

Use ZRC Cold Galvanizing Compound or approved equal.

2. Surface preparation prior to repair paint applications shall be SSPC-SP11 Power Tool Cleaning to Bare Metal.

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D. Minimum coating thickness requirements for the repair are those described in ASTM A123 Section 4.6.

END OF SECTION

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SECTION 05500

METAL FABRICATIONS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Loose plates.

2. Pins and Cotter Keys.

1.3 SUBMITTALS

A. Product Data: For the following:

1. Cable hardware and connectors.

2. Link Plates.

3. Coating Products

B. Shop Drawings: Detail fabrication and erection of each metal fabrication indicated. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items.

1. Provide templates for plates and pins specified for installation.

C. Welding Certificates: Copies of certificates for welding procedures and personnel.

D. Qualification Data: For firms and persons specified in "Quality Assurance" Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners, and other information specified.

1.4 QUALITY ASSURANCE

A. Fabricator Qualifications: A firm experienced in producing metal fabrications similar to those indicated for this Project and with a record of successful in-service performance, as well as sufficient production capacity to produce required units.

B. Welding: Qualify procedures and personnel according to the following:

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1. AWS D1.1, "Structural Welding Code--Steel."

2. Certify that each welder has satisfactorily passed AWS qualification tests for welding processes involved and, if pertinent, has undergone recertification.

1.5 PROJECT CONDITIONS

A. Field Measurements: Where metal fabrications are indicated to fit existing conditins, verify dimensions by field measurements before fabrication and indicate measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work.

1.6 COORDINATION

A. Coordinate installation of anchorages for metal fabrications. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete or masonry. Deliver such items to Project site in time for installation.

PART 2 - PRODUCTS

2.1 METALS, GENERAL

A. Metal Surfaces, General: For metal fabrications exposed to view in the completed Work, provide materials with smooth, flat surfaces without blemishes. Do not use materials with exposed pitting, seam marks, roller marks, rolled trade names, or roughness.

2.2 FERROUS METALS

A. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M.

1. Finish: Hot-dip galvanized after fabrication.

B. Gray-Iron Castings: ASTM A 48, Class 30 unless another class is indicated or required by structural loads.

C. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

2.3 COATINGS

A. See section 05040 HOT DIP GALVANIZING for coating of all plates, pins, and connectors.

B. Galvanizing Repair Coating: Use ZRC cold galvanizing compound as noted in specification section 05040.

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2.4 FASTENERS

A. Pins and Cotter Keys are to be per Bethlehem’s system as specified on the drawings

2.5 FABRICATION, GENERAL

A. Shop Assembly: Preassemble items in shop to greatest extent possible to minimize field splicing and assembly. Disassemble units only as necessary for shipping and handling limitations. Use connections that maintain structural value of joined pieces. Clearly mark units for reassembly and coordinated installation.

B. Shear and punch metals cleanly and accurately. Remove burrs.

C. Ease exposed edges to a radius of approximately 1/32 inch , unless otherwise indicated. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work.

D. Weld corners and seams continuously to comply with the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

4. At exposed connections, finish exposed welds and surfaces smooth and blended so no roughness shows after finishing and contour of welded surface matches that of adjacent surface.

E. Provide for anchorage of type indicated; coordinate with supporting structure. Fabricate and space anchoring devices to secure metal fabrications rigidly in place and to support indicated loads.

F. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish hardware, screws, and similar items.

G. Fabricate joints that will be exposed to weather in a manner to exclude water, or provide weep holes where water may accumulate.

H. Allow for thermal movement resulting from the following maximum change (range) in ambient and surface temperatures by preventing buckling, opening up of joints, overstressing of components, failure of connections, and other detrimental effects. Base engineering calculation on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

1. Temperature Change (Range): 120 deg F , ambient; 180 deg F, material surfaces.

I. Form exposed work true to line and level with accurate angles and surfaces and straight sharp edges.

J. Remove sharp or rough areas on exposed traffic surfaces.

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K. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners where possible. Use exposed fasteners of type indicated or, if not indicated, Phillips flat-head (countersunk) screws or bolts. Locate joints where least conspicuous.

2.6 LOOSE PLATES

A. Provide loose plates for link bars.

B. Galvanize plates after fabrication.

2.7 MISCELLANEOUS FRAMING AND SUPPORTS

A. General: Provide steel framing and supports indicated and as necessary to complete the Work.

B. Fabricate steel pipe columns for supporting wood frame construction from steel pipe with steel baseplates and top plates as indicated. Drill baseplates and top plates for anchor and connection bolts and weld to pipe with fillet welds all around. Make welds the same size as pipe wall thickness, unless otherwise indicated.

2.8 FINISHES, GENERAL

A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes.

B. Finish metal fabrications after assembly.

2.9 STEEL AND IRON FINISHES

A. Galvanizing: Hot-dip galvanize items as indicated to comply with specification section 05040

PART 3 - EXECUTION

3.1 INSTALLATION, GENERAL

A. Fastening to In-Place Construction: Provide anchorage devices and fasteners where necessary for securing metal fabrications to in-place construction.

B. Field Welding: Comply with the following requirements:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

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4. At exposed connections, finish exposed welds and surfaces smooth and blended so no roughness shows after finishing and contour of welded surface matches that of adjacent surface.

3.2 INSTALLING MISCELLANEOUS FRAMING AND SUPPORTS

A. General: Install plates to comply with requirements of items being supported, including manufacturers' written instructions and requirements indicated on Shop Drawings, if any.

3.3 ADJUSTING AND CLEANING

A. Touchup Painting: Immediately after erection, clean field welds, bolted connections, and abraded areas of shop paint, and paint exposed areas with the same material as used for shop painting to comply with SSPC-PA 1 for touching up shop-painted surfaces.

1. Apply by brush or spray to provide a minimum 2.0-mil dry film thickness.

B. Touchup Painting: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint are specified in Division 9 Section "Painting."

C. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair galvanizing to comply with ASTM A 780.

END OF SECTION

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SECTION 02 4119 - SELECTIVE STRUCTURE DEMOLITION

1.1 SUMMARY

A. This Section includes the following:

1. Demolition, removal and disposal of bushes, improvements, and any other obstructions that are not designated or permitted to remain.

2. Salvaging and stockpiling of existing salvageable items to be reused or recycled.

B. Related Sections include the following:

1. Division 31 Section "Site Clearing" for site clearing and removal of above- and below-grade improvements.

1.2 DEFINITIONS

A. Remove: Detach items from existing construction and legally dispose of them off-site, unless indicated to be removed and salvaged or removed and reinstalled.

B. Remove and Reinstall: Detach items from existing construction, prepare them for reuse, and reinstall them where indicated.

C. Existing to Remain: Existing items of construction that are not to be removed and that are not otherwise indicated to be removed, removed and salvaged, or removed and reinstalled.

1.3 MATERIALS OWNERSHIP

A. Historic items, relics, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, antiques, and other items of interest or value to Government that may be encountered during selective demolition remain Government's property. Carefully remove and salvage each item or object in a manner to prevent damage and deliver promptly to Government.

1.4 SUBMITTALS

A. Schedule of Selective Demolition Activities: Indicate the following:

1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Government's on-site operations are uninterrupted.

2. Interruption of utility services. Indicate how long utility services will be interrupted.

3. Coordination for shutoff, capping, and continuation of utility services.

4. Locations of proposed dust- and noise-control temporary partitions and means of egress.

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5. Coordination of Government's continuing occupancy of portions of existing site and of Government's partial occupancy of completed Work.

6. Means of protection for items to remain.

B. Predemolition Photographs or Videotapes: Show existing conditions of adjoining construction and site improvements, including finish surfaces, that might be misconstrued as damage caused by selective demolition operations.

1.5 QUALITY ASSURANCE

A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ANSI A10.6 and NFPA 241.

C. Predemolition Conference: Conduct conference at Project site prior to removals. Review methods and procedures related to selective demolition including, but not limited to, the following:

1. Inspect and discuss condition of construction to be selectively demolished.

2. Review and finalize selective demolition schedule and verify availability of materials, demolition personnel, equipment, and facilities needed to make progress and avoid delays.

3. Review areas where existing construction is to remain and requires protection.

1.6 PROJECT CONDITIONS

A. Conditions existing at time of inspection for bidding purpose will be maintained by Government as far as practical.

B. Notify CO of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

C. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

1. If materials suspected of containing hazardous materials are encountered, do not disturb;

immediately notify CO and Government. Government will remove hazardous materials under a separate contract.

D. Storage or sale of removed items or materials not to be re-used on-site is not permitted.

E. Utility Service: Maintain existing utilities indicated to remain in service and protect them against damage during selective demolition operations.

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1.7 WARRANTY

A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials so as not to void existing warranties.

PART 2 - EXECUTION

2.1 EXAMINATION

A. Survey existing conditions and correlate with requirements indicated to determine extent of selective demolition required.

B. When unanticipated mechanical, electrical, or structural elements that conflict with intended function or design are encountered, investigate and measure the nature and extent of conflict.

Promptly submit a written report to CO.

C. Survey of Existing Conditions: Record existing conditions by use of preconstruction photographs or preconstruction videotapes.

1. Before selective demolition or removal of existing building elements that will be reproduced or duplicated in final Work, make permanent record of measurements, materials, and construction details required to make exact reproduction.

D. Perform surveys as the Work progresses to detect hazards resulting from selective demolition activities.

2.2 UTILITY SERVICES AND MECHANICAL/ELECTRICAL SYSTEMS

A. Existing Services/Systems: Maintain services/systems indicated to remain and protect them against damage during selective demolition operations.

B. Service/System Requirements: Locate, identify, disconnect, and seal or cap off indicated or encountered utility services and mechanical/electrical systems serving areas to be selectively demolished.

1. Government will arrange to shut off indicated services/systems when requested by Contractor.

2. Arrange to shut off encountered utilities with utility companies.

2.3 PREPARATION

A. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with access and other adjacent occupied and used improvements.

B. Temporary Facilities: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent facilities to remain.

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1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of site.

C. Temporary Shoring: Provide and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

1. Strengthen or add new supports when required during progress of selective demolition.

2.4 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.

2. Dispose of demolished items and materials promptly.

B. Removed and Reinstalled Items:

1. Protect items from damage during transport and storage.

2. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment.

C. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by CO, items may be removed to a suitable, protected storage location during selective demolition and cleaned and reinstalled in their original locations after selective demolition operations are complete.

2.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS

A. Concrete: If concrete is encountered, saw-cut perimeter of area to be demolished, then break up and remove. Saw-cut on existing joint or at least four feet from existing joint unless otherwise directed by CO. Saw in a true line with a vertical face.

2.6 DISPOSAL OF DEMOLISHED MATERIALS

A. General: Except for items or materials indicated to be recycled, reused, salvaged, reinstalled, or otherwise indicated to remain Government's property, remove demolished materials from Project site and legally dispose of them in an EPA-approved landfill.

1. Do not allow demolished materials to accumulate on-site.

2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

B. Burning: Do not burn demolished materials.

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C. Disposal: Transport demolished materials off Government's property and legally dispose of them.

2.7 CLEANING

A. Clean adjacent improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

2.8 SELECTIVE DEMOLITION SCHEDULE

A. Existing Construction to Be Removed: Bushes and shrubs encountered within the identified improvements in Plans.

B. Existing Items to Be Removed and Reinstalled: Gate at berm entrance; wire fence; riprap, aggregate surface, and embankment on berm necessary to install fabric units.

C. Existing Items to Remain: All improvements and trees and shrubs not identified for removal in the Plans unless approved by the CO in writing.

END OF SECTION 024119

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SECTION 260500 - BASIC ELECTRICAL REQUIREMENTS

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specifications Sections, apply to this Section.

1.02 SUMMARY

A.This section includes general requirements for all Division 26 work.

B. Work Included: Furnish all labor and materials and perform all operations necessary for the installation of complete and operating electrical systems as required by the specifications and as shown on the drawings, subject to the terms and conditions of the contract. The Work shall also include the completion of those details of electrical work not mentioned or shown which are necessary for the successful operation of all electrical systems. Prove satisfactory operation of all equipment and controls to the Engineer upon request.

1.03 REFERENCE STANDARDS

A. For products or workmanship specified by association, trade or Federal Standards, comply with requirements of the standard, except when more rigid requirements are specified or are required by applicable codes.

B. The date of the standard that is in effect at the bid date, or date of Owner/Contractor Agreement when there are no bids, except when a specific date is specified or when the standard is part of an applicable code which includes an edition date.

C. When required by individual Specifications section, obtain copy of standard. Maintain copy at job site during work until Substantial Completion.

D. Schedule of Referenced…