Attachment 4 Forest Service Supplemental Specifications.pdf

SECTION 033000

CONCRETE

PART 1 – GENERAL

1.1 SECTION INCLUDES

A. Slabs on grade.

1.2 REFERENCES

A. ACI 211.1 – Selecting Proportions for Normal, Heavyweight, and Mass Concrete.

B. ACI 302 – Guide for Concrete Floor and Slab Construction.

C. ACI 304 – Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

E. ACI 305R – Hot Weather Concreting.

F. ACI 306R – Cold Weather Concreting.

G. ACI 308 – Standard Practice for Curing Concrete.

H. ACI 318 – Building Code Requirements for Reinforced Concrete.

I. ASTM C33 – Concrete Aggregates.

J. ASTM C94 – Ready-Mixed Concrete.

K. ASTM C150 – Portland Cement.

L. ASTM C171 – Sheet Materials for Curing Concrete M. ASTM C494 – Chemical Admixtures for Concrete.

1.4 SUBMITTALS FOR REVIEW

A. Section 01 60 00 – Product Requirements: Procedures for submittals.

B. Product Data: Provide data on joint devices, and admixtures.

1.5 SUBMITTALS AT PROJECT CLOSEOUT

A. Section 01 78 00 – Closeout Submittals: Procedures for submittals.

B. Accurately record actual locations of embedded utilities and components that are concealed from view.

1.6 QUALITY ASSURANCE

A. Perform Work in accordance with ACI 301.

B. Acquire cement and aggregate from same source for all work.

C. Conform to ACI 305R when concreting during hot weather.

D. Conform to ACI 306R when concreting during cold weather.

PART 2 – PRODUCTS

2.1 CONCRETE MATERIALS

A. Cement: ASTM C150, Type II – Portland type.

B. Fine and Coarse Aggregates: ASTM C33.

C. Water: Clean and not detrimental to concrete.

D. Fibermesh: MONOFILAMENT fibers, meet or exceed ASTM-C1116 guidelines.

2.2 ADMIXTURES

A. Chemical: ASTM C494.

2.3 ACCESSORIES

A. None unless specified.

2.4 CONCRETE MIX

A. Mix concrete in accordance with ACI 304. Deliver concrete in accordance with ASTM C94.

B. Select proportions for normal weight concrete in accordance with ACI 301 Method 2.

C. Provide concrete to the following criteria:

Unit Measurement Compressive Strength (28 day) for slabs and footings

3500 psi

Water/Cement Ratio (maximum) 0.45 Aggregate Size (maximum) ¾ inch Aggregate Size (minimum) ¼ inch Slump (maximum) 4 inches

D. Colored concrete shall be placed AS SHOWN ON THE DRAWINGS. Color shall be Davis color as designated by the Contracting Officer.

E. Use accelerating admixtures in cold weather only when approved by CO. Use of admixtures will not relax cold weather placement requirements.

F. Do not use calcium chloride.

G. Use set retarding admixtures during hot weather only when approved by CO.

PART 3 – EXECUTION

3.1 EXAMINATION

A. Verify site conditions.

B. Verify requirements for concrete cover over reinforcement.

C. Verify that anchors, seats, plates, reinforcement and other items to be cast into concrete are accurately placed, positioned securely, and will not cause hardship in placing concrete.

3.2 PREPARATION

A. Prepare previously placed concrete by cleaning with steel brush and applying bonding agent in accordance with manufacturer's instructions.

B. In locations where new concrete is dowelled to existing work, drill holes in existing concrete, insert steel dowels and pack solid with non-shrink grout.

C. Coordinate the placement of joint devices with erection of concrete formwork and placement of form accessories.

D. All reinforcing steel in slabs shall be supported by concrete dobies or other means approved by the COR as shown on the plans.

3.3 PLACING CONCRETE

A. Place concrete in accordance with ACI 301.

B. Notify COR’s minimum 24 hours prior to commencement of operations.

C. Ensure reinforcement, inserts, embedded parts, formed expansion and contraction joints are not disturbed during concrete placement.

D. Maintain records of concrete placement. Record date, location, quantity, air temperature, and test samples taken.

E. Screed slabs on grade level, maintaining surface flatness of maximum 1/4-inch in 10 feet.

3.4 CONCRETE FINISHING

A. Provide formed concrete with smooth rubbed finish.

B. Finish concrete floor surfaces in accordance with ACI 301.

3.5 CURING AND PROTECTION

A. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.

B. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.

3.6 FIELD QUALITY CONTROL

A. Provide free access to work and cooperate with appointed firm.

B. Submit proposed mix design of each class of concrete to CO for review prior to commencement of Work.

C. Tests of cement and aggregates may be performed to ensure conformance with specified requirements.

3.7 PATCHING

A. Allow COR’s to inspect concrete surfaces immediately upon removal of forms.

B. Honeycomb or embedded debris in concrete is not acceptable. Notify CO upon discovery.

C. Do not patch, fill, touch-up, repair or replace exposed concrete except upon direction of CO for each individual area.

END OF SECTION

Santa Maria Air Attack Base Backflow Valve Assembly Replacement

Specifications

USDA FOREST SERVICE, R-5

SM AIR ATTACK BASE WATER SYSTEM UPGRADES

SECTION 017320 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes demolition and removal of the following:

1. Removal and/or decommission in place in accordance with Santa Barbara County and Santa Maria Airport regulations, of all waterlines being replaced with new line.

2. Removal of waterline, meter, valving and appurtenances existing at the backflow plumbing.

3. Removal of below-grade section of pipe.

4. Any patches and repairs required.

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.

1.3 MATERIALS OWNERSHIP

A. Except for items or materials indicated to be reused, salvaged, reinstalled, or otherwise indicated to remain Government property, demolished materials shall become Contractor's property and shall be removed from Project site.

1.4 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.

1.5 PROJECT CONDITIONS

A. Government will occupy buildings onsite during this construction. Conduct selective demolition to limit impact to Government operations onsite. Provide not less than 72 hours' notice to CO of activities that will affect Government operations.

B. 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 Contracting Officer (CO).

C. Storage or sale of removed items or materials on-site will not be permitted.

1.6 WARRANTY

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

PART 2 - PRODUCTS

2.1 REPAIR MATERIALS

A. Use repair materials identical to existing materials.

1. Use materials whose installed performance equals or surpasses that of existing materials.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that utilities have been disconnected and capped.

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

C. When unanticipated mechanical, electrical, or structural elements conflict with intended function or design are encountered, investigate and measure the nature and extent of conflict. Promptly submit a written report to CO.

3.2 PATCHING AND REPAIRS

A. General: Promptly repair damage to adjacent construction caused by selective demolition operations.

3.3 DISPOSAL OF DEMOLISHED MATERIALS

A. General: Promptly dispose of demolished materials. Do not allow demolished materials to accumulate on-site.

B. Disposal: Transport demolished materials off Government property and legally dispose of them.

END OF SECTION 017320

PLUMBING APPURTENANCES 221103- 1

USDA FOREST SERVICE, R-5

SANTA MARIA AIR ATTACK STATION WATER SYSTEM UPGRADES

SECTION 221103 - PLUMBING APPURTENANCES

PART 1 - GENERAL

1.1 SUMMARY

A. This section includes piping, fittings, valves, gauges, backflow preventers, and other plumbing devices, utiltity boxes, service connection assemblies, and other designated locations.

B. Related sections include the following:

1. Section 221100 “Water Distribution Systems.”

1.2 SUBMITTALS

A. Product Data: For the following:

1. Backflow preventers and assemblies.

2. Water meters

3. Pipe supports

B. Operation and Maintenance Data: To be used in emergency, operation, and maintenance manuals. Include the data for the following:

1. Backflow preventers.

2. Water meters

1.3 MINIMUM SYSTEM REQUIREMENTS

A. Unless otherwise noted, the minimum working pressure for piping and specialty valves and devices shall be 160 psig.

1.4 Q UALITY ASSURANCE

A. NSF Compliance:

1. All products in contact with potable water shall comply with NSF 61 Annex G. All pipes, fittings, fixtures, solder and flux shall meet the 0.25% maximum lead content rules for all wetted components.

1.5 MEASUREMENT AND PAYMENT

A. Payment will be as listed for the following items:

1. 221103-A, Tie In to Existing Water Lines

PLUMBING APPURTENANCES 221103- 2

PART 2 - PRODUCTS

2.1 GENERAL

A. All plumbing appurtenances shall be new and unused, of the type, pressure rating or class, and size specified and as show on the Drawings.

2.2 UNION

A. Description: Female type, malleable iron, 150 pound, with ground brass to iron seat.

B. Model: Manufactured by Crane Company, or an approved equal.

2.3 PRESSURE REGULATOR

A. Description: 2-inch diameter or larger, 0 to 200 psi range, with brass movement, steel case and bottom mounting with NPS 0.25 threads. Include 2” gate valve for gauge isolation.

2.4 WATER METER

A. Description: AWWA C700, magnetic driven, positive displacement meters of the flat nutating disc type, NSF 372, NSF-61 Annex G certified. Register flow in gallons.

B. Maincases for 1” meter shall be lead-free copper alloy of the removeable bottom cap type with the bottom cap secured by four bolts.

C. Model: T-10 with direct read display as manufactured by Neptune, or an approved equal.

1” meter shall have 100% operating accuracy in the range of 1 GPM to 50 GPM.

D. Or model equal to what is currently present on the line.

2.5 SUPPORTS FOR PIPES AND APPURTENANCES

A. Description: Galvanized steel framing system shall consist of u-bolt or appropriate pad mounted a section of pipe. Pipe shall be threaded into a reducing flange, and secured to the concrete pad. Connection to floor shall be grouted using non-shrink grout. Pipe supports shall be installed every 4’ or as needed to adequately support piping systems.

B. Contractor fabricated, of manufactured product is acceptable.

C. Manufacturer: Unistrut Corporation or an approved equal.

2.6 BACKFLOW PREVENTER

A. General: ASSE 1013 standard, backflow preventers.

1. Working Pressure: 150 psig minimum, unless otherwise indicated.

PLUMBING APPURTENANCES 221103- 3

2. NPS 2 and Smaller: Unleaded bronze body with threaded ends. Interior Components: Corrosion-resistant materials.

3. Strainer: On inlet, if indicated.

B. Reduced-Pressure-Principle Backflow Preventers: AWWA C511, suitable for continuous pressure application. The assembly shall consist of an internal pressure differential relief valve located in a zone between two positive seating check modules with captured springs and silicone seat discs. Seats and seat discs shall be replaceable in both check modules and the relief valve. There shall be no threads or screws in the waterway exposed to line fluids. Service of all internal components shall be through a single access cover secured with stainless steel bolts. Body and shutoffs shall be constructed using Lead Free* cast copper silicon alloy materials. Lead Free* reduced pressure zone assembly shall comply with state codes and standards, where applicable, requiring reduced lead content. The assembly shall also include union connections, two resilient seated isolation valves, four resilient seated test cocks and an air gap drain fitting.

The assembly shall meet the requirements of: USC; CSA B64.4.

1. Maximum Pressure Loss: 12 psig through middle 1/3 of flow range.

C. Available Manufacturers:

1. Series LFU009M(2)QT-S as manufactured by Watts Industries, Inc.; Water Products Div., or approved equal.

D. Backflow units may be of different model and design as long as they adhere to County, State and/or Santa Maria Airport standards. Any design is to be approved in writing by the Contracting Officer.

2.7 PIPE AND FITTINGS

A. GSP (For all new piping):

1. Pipe, Schedule 40 A53 GSP, better or approved equal.

2. Fittings:

a. All fitting and transitions shall be threaded

b. Insert Fittings: Not allowed.

c. Compression-type fittings are not allowed.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install piping, fittings, valves, gauges, and other plumbing devices within utility buildings, utility boxes or at other locations according to the manufacturer’s written instructions and as indicated on the Drawings.

3.2 BACKFLOW-PREVENTER INSTALLATION

PLUMBING APPURTENANCES 221103- 4

A. Install according to requirements of plumbing and health department and authorities having jurisdiction.

END OF SECTION 221103