7-Bid Manual Section 6 - Construction Specifications B.pdf

Division 5 – Metals Section 05500 – Metal Fabrications

FSWA

Public Water System Upgrades 05500 - 1

DIVISION 5 - METALS

SECTION 05500 - METAL FABRICATIONS

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Miscellaneous shop fabricated ferrous metal and aluminum items.

B. Items Included:

1. Loose bearing and leveling plates.

2. Loose steel lintels.

3. Steel pipe bollards.

4. Miscellaneous framing and supports.

5. Miscellaneous metal trim.

1.2 REFERENCES

A. American Society for Testing and Materials

1. ASTM A36: Carbon Structural Steel.

2. ASTM A53, Gr. B: Pipe, Steel, Black and Hot-Dipped, Zinc-coated, Welded and Seamless Pipe.

3. ASTM A123: Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel

Products.

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

5. ASTM A 167: Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet and Strip.

6. ASTM A307: Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength.

7. ASTM A320: Alloy Steel and Stainless Steel Bolting for Low Temperature Service.

8. ASTM A385: Practice for Providing High Quality Zinc Coatings (Hot-

Dipped).

9. ASTM A480: Flat Rolled Stainless and Heat-Resisting Steel Plate, Sheet and Strip.

10. ASTM A501: Hot-Formed Welded and Seamless Carbon Steel Structural

Steel Tubing.

11. ASTM B209: Aluminum and Aluminum-Alloy Sheet and Plate.

B. AISC: American Institute of Steel Construction – Specification for Structural Steel

Buildings Allowable Stress Design and Plastic Design.

C. American Welding Society: AWS D1.1 Structural Welding Code.

D. Federal Specifications:

1. Fed. Spec. FF-S 92a, Screws, Machine: Slotted, Cross-Recessed or

Hexagon Head.

2. Fed. Spec. FF-S-325, Shield, Expansion: Nail, Expansion; and Nail, Drive

Screw (Devices, Anchoring, Masonry) Group II (Shield, Expansion Bolt Anchor) Type 4 (Wedge expansion anchors) Class 1 (One-piece steel

Public Water System Upgrades 05500 - 2 expander with cone taper integral with stud).

3. Fed. Spec. TT-P-645, Primer, Paint, Zinc-Chromate, Alkyd Type.

E. Steel Structures Painting Council:

1. Surface Preparation Specifications:

a. SSPC-SP1, Solvent Cleaning.

b. SSPC-SP2, Hand Tool Cleaning.

c. SSPC-SP3, Power Tool Cleaning.

2. Paint Application Specifications: SSPC-PA1, Shop, Field and Maintenance Painting.

1.3 SUBMITTALS

A. Submit under provisions of Section 01300.

B. Shop Drawings and Product Data:

1. Shop drawings shall identify the detail as indicated on the Engineer's

Drawings and be complete as to the detail of the product and location in the project, the size of members, the methods of joining various components, the quantity, finish, the location and type of anchors and necessary measurements.

2. Shop assemblies which require markings for erection identification shall have easy-to-read markings on the shop and erection drawings.

3. Note on shop drawings variations in tolerances or clearances between various products.

4. Use standard welding symbols of the American Welding Society on shop drawings. Indicate net weld lengths.

C. Samples: Submit samples of materials as requested by Engineer.

1.4 QUALITY ASSURANCE

A. Welders Qualifications: Welds shall be made only by welders, tackers and welding operators who have been previously qualified by tests as prescribed in the Structural Welding Code, AWS D1.1 or the American Welding Society to perform the type of work required.

B. 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.

1.5 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Deliver, store and handle materials according to Section 01600.

B. Store steel above the ground surface on platforms, skids, blocking or other supports.

C. Protect steel from exposure to conditions that produce rust.

D. Handle steel and aluminum so no parts are bent, broken or otherwise damaged and

Public Water System Upgrades 05500 - 3 avoid damage to other material and work.

1.6 FIELD MEASUREMENTS

A. Take field measurements prior to preparation of shop drawings and fabrication, where possible. Do not delay job progress; allow for trimming and fitting where taking field measurements before fabrication might delay work.

B. Verify that field measurements are as indicated on shop drawings prior to installation.

PART 2 - PRODUCTS

2.1 MATERIALS

A. General: Use only materials which are smooth and free of surface blemishes including pitting, seam marks, roller marks, rolled trade names, and roughness for fabrication of miscellaneous metal work which will be exposed to view.

B. Steel Plates, Shapes and Bars: ASTM A36.

C. Structural Steel Sheet: Hot-rolled, ASTM A570; or cold-rolled ASTM A 611, Class 1;

of grade required for design loading.

D. Galvanized Structural Steel Sheet: ASTM A 446, of grade required for design loading. Coating designation as indicated, or if not indicated, G90.

E. Steel Pipe: ASTM A 53; Type and grade (if applicable) as selected by fabricator and as required for design loading; black finish unless galvanizing is indicated; standard weight (Schedule 40), unless otherwise indicated.

F. Brackets, Flanges and Anchors: Cast or formed metal of the same type material and finish as supported rails, unless otherwise indicated.

G. Aluminum: 6061-T6, ASTM B209, B308, or alloys and tempers required for design loads.

H. Stainless Steel Plate, Sheet and Strip: ASTM A 167 and A 480.

I. Welding Materials: AWS D1.1, type required for materials being welded.

J. Fasteners, Anchors and Bolts:

1. Machine Screws: AISC Type 304 stainless steel conforming to Fed. Spec.

FF-S-92a.

2. Stainless Steel Anchor Bolts: ASTM A 320 Grade B 8, AISC Type 304.

3. Standard Steel Bolts, Nuts and Washers: ASTM A307.

4. Stainless Steel Expansion Anchors: Conforming to Fed. Spec. FF-S-235

Group II, Type 4, Class 1, such as Hilti Kwik-Bolt, Phillips Red Head Wedge- Anchor and Molly Parabolt; or equal.

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K. Shop Paint:

1. Metal Primer Paint: Red lead mixed pigment, alkyd varnish, linseed oil paint, FS TT-P-86, Type II; or red lead iron oxide, raw linseed oil, alkyd paint, Steel Structures Painting Council (SSPC) Paint 2-64; or basic lead silico chromate base iron oxide, linseed oil, alkyd paint, FS TT-P-615, Type II.

2. Primer selected must be compatible with finish coats of paint. Coordinate selection of metal primer with finish paint requirements specified in Section 09900 - Painting.

2.2 PAINT

A. Galvanizing Repair Paint: High-zinc-dust-content paint for re-galvanizing welds in steel, complying with SSPC-Paint 20.

B. Bituminous Paint: Cold-applied asphalt mastic complying with SSPC-Paint 12, except containing no asbestos fibers, or cold-applied asphalt emulsion complying with ASTM D1187.

2.3 FABRICATION PROCEDURES

A. 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 installations.

B. Fabricate in accordance with details, approved shop drawings and referenced standards. Use materials of size and thickness to produce strength and durability in finished product for use intended.

C. Drill or punch holes required for the attachment of work of other trades and for bolted connections. Burned holes are not acceptable.

D. Provide for anchorage of type shown, coordinated with supporting structure.

Fabricate and space anchoring devices to provide adequate support for intended use.

E. Use flush countersunk screws or bolts in exposed areas unless specifically noted otherwise.

F. Welding shall be in accordance with AWS Handbook. Weld corners and seams continuously.

G. Dress smooth welds and sharp corners.

H. Make work square, plumb, straight and true.

2.4 FABRICATED METAL ITEMS

A. Loose Bearing and Leveling Plates:

1. Provide loose bearing and leveling plates for steel items bearing on masonry

Public Water System Upgrades 05500 - 5 or concrete construction. Drill plates to receive anchor bolts and for grouting.

2. Galvanize plates after fabrication.

B. Loose Steel Lintels:

1. All angles, channels, plates, bars and other structural shapes shall be ASTM

A36 steel (Fy = 36 KSI). All steel to be galvanized unless otherwise indicated.

2. Fabricate loose structural steel lintels from steel angles and shapes of size indicated for openings and recesses in masonry walls and partitions at locations indicated.

3. Weld adjoining members together to form a single unit where indicated.

4. Galvanize all loose steel lintels located in exterior walls.

5. Repair damaged galvanized surfaces with high-zinc-dust-content galvanizing repair paint complying with SSPC-Paint 20.

C. Steel Pipe Bollards:

1. All steel pipe shall be minimum six inch (6”) diameter, schedule 40, ASTM

A501 or A53, Type E or S, Grade B. Galvanize where exposed to weather.

D. Miscellaneous Framing and Supports:

1. General: Provide steel framing and supports indicated as necessary to complete work.

2. Fabricate units from structural-steel shapes, plates and bars of welded construction, unless otherwise indicated. Fabricate to sizes, shapes, and profiles indicated and as necessary to receive adjacent construction retained by framing and supports. Cut, drill, and tap units to receive hardware, hangers and similar items.

3. Where units are indicated to be cast into concrete or built into masonry, equip with integrally welded steel strap anchors 1-1/4” wide by 1/4” thick by 8” long at 24” oc, unless otherwise indicated.

4. Fabricate supports for overhead doors as required for proper track installation. Brace support framing as required to prevent movement of door track.

5. Galvanize miscellaneous framing and supports.

E. Miscellaneous Metal Trim:

1. Unless otherwise indicated, fabricate units from structural steel shapes, plates and bars of profiles shown with continuously welded joints and smooth exposed edges. Miter corners and use concealed field splices where possible.

2. Provide cutouts, fittings, and anchorages as needed to coordinate assembly and installation with other work. Provide anchors, welded to trim, for embedding in concrete or masonry construction, spaced not more than six inches (6”) from corners and twenty-four inches (24”) oc, unless otherwise indicated.

3. Galvanize all miscellaneous steel trim.

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F. Finishes – General:

1. Comply with NAAMM’s “Metal Finishes Manual for Architectural and Metal

Products” for recommendations for applying and designating finishes.

2. Finish metal fabrications after assembly.

G. Steel and Iron Finishes:

1. Galvanizing: Hot-dip galvanize items as indicated, to comply with applicable standard listed below:

a. ASTM A123 for galvanizing steel and iron products.

b. ASTM A153 for galvanizing steel and iron hardware.

H. Stainless Steel Finishes:

1. Remove tool and die marks and stretch or blend into finish.

2. Bright, Directional Polish: No. 4 finish.

3. When polishing is completed, passivate and rinse surfaces. Remove embedded foreign matter and leave surfaces chemically clean.

2.5 SHOP PAINTING

A. Surface Preparation:

1. Clean steelwork of loose mill scale, loose rust, weld slag or flux deposit, dirt and other foreign matter by Hand Cleaning (SSPC-SP 2) or Power Cleaning

(SSPC-SP 3)

2. Remove grease, oils, tars and other contaminants by Solvent Cleaning

(SSPC-SP 1).

B. Following Surface Preparation:

1. Apply shop paint before surface starts to rust.

2. Do not allow clean surfaces to stand overnight before coating.

C. Painting:

1. Apply shop paint in accordance with SSPC-PA 1.

2. Minimum dry mil thickness of shop paint, 1.5 mils.

3. Steel encased in concrete will not require shop paint.

D. Aluminum Finishes:

1. Standard mill finish unless indicated otherwise.

PART 3 - EXECUTION

3.1 INSPECTION

A. Verify that field conditions are acceptable and are ready to receive work.

B. Beginning installation means erector accepts conditions.

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3.2 PREPARATION

A. Field Measurements: Verify measurements in the field before fabrication.

B. Clean and strip primed steel items to bare metals.

C. Supply items required to be cast into concrete with setting templates to appropriate sections.

3.3 ERECTION

A. Erect and install miscellaneous metal and metal fabrications in accordance with details, approved shop drawings and referenced standards aligning straight, plumb and level with a tolerance of one in 200.

B. Provide suitable braces and stays to hold metal fabrications in position until permanently secured.

C. Perform field welding according to AWS D1.1.

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 roughness shows after finishing and contour of welded surface matches that of adjacent surface.

D. Draw threaded bolt connections up tight with lock washers or other means to prevent loosening. Screw fasteners in exposed or finished surfaces may be slot or philips head type, but in either case, screws must be counter-sunk design.

E. Do not make site cuts or adjustments not scheduled without ENGINEER's approval.

F. After erection, prime welds, abrasions and surfaces not shop primed.

G. Metal surfaces shall be clean and free from mill scale, flake rust and rust pitting; well formed and finished to shape and size, with sharp lines and angles and smooth surfaces. Shearing and punching shall leave clean true lines and surfaces. Weld or rivet permanent connections. Welds and flush rivets shall be finished flush and smooth on surfaces that will be exposed after installation. Do not use screws or bolts where they can be avoided; where used, heads shall be countersunk, screwed up tight and threads nicked to prevent loosening.

H. Fastenings shall be concealed where practicable. Thickness of metal and details of assembly and supports shall give ample strength and stiffness. Joints exposed to weather shall be formed to exclude water. Provide holes and connections for the work of other trades.

I. Fastening to in-place construction: Provide anchorage devices and fasteners where necessary for securing metal fabrications to in-place construction. Include threaded

Public Water System Upgrades 05500 - 8 fasteners for concrete and masonry inserts, toggle bolts, through-bolts, lag bolts, wood screws, and other connectors.

3.4 PAINTING AND PROTECTIVE COATING

A. Paint aluminum surfaces at point of contact with wood, concrete or masonry construction, except where the aluminum is to be embedded in concrete, with one coat (minimum dry mil thickness - 5.0 mils) of bituminous paint.

B. Paint aluminum surfaces at point of contact with steel with one coat of zinc chromate primer.

C. All ferrous metal, except stainless steel and galvanized surfaces, shall be properly cleaned and given one coat of primer to match structural steel primer.

D. Anchors that are built into masonry shall be coated with asphalt paint unless specified to be galvanized.

E. Metal work to be encased in concrete shall be left unpainted unless specified or noted otherwise.

F. Where hot-dip galvanized or zinc-coated metal is specified or shown, it shall not be shop primed unless specifically required.

END OF SECTION 05500

Section 05515 – Aluminum Stairs and Platforms

FSWA 05515-1

Public Water System Upgrades

DIVISION 5 – METALS

SECTION 05515 – ALUMINUM STAIRS AND PLATFORMS

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

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

1.2 SUMMARY

A. This Section includes the following:

1. Industrial-type aluminum stairs

2. Aluminum framed platforms

1.3 RELATED DOCUMENTS

A. Section 05520 – Aluminum Handrails

1.4 PERFORMANCE REQUIREMENTS

A. Structural Performance: Provide mental stairs and platforms capable of withstanding the effects of gravity loads and the following loads and stresses within limits and under conditions indicated:

1. Uniform Load: 100lbf/sq.ft..

2. Concentrated Load: 300 lbf applied on an area of 4 sq. in.

3. Uniform and concentrated loads need not be assumed to act concurrently.

4. Stair and platform framing: Capable of withstanding stresses resulting from Railing loads in addition to loads specified above.

5. Limit deflection of platforms, and framing members to L/240 pr 1/4 inch, whichever is less.

1.5 SUBMITTALS

A. Product Data: For stairs

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Provide templates for anchors and bolts specified for installation under other Sections.

C. Delegated-Design Submittal: For installed products indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

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D. Qualification Data: For qualified professional engineer.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Fabricator of products.

B. NAAMM Stair Standard: Comply with “Recommended Voluntary Minimum Standards for Fixed Metal Stairs” in NAAMM AMP 510, “Metal Stairs Manual,” For class of stair designated, unless more stringent requirements are indicated.

1. Industrial-Type Stairs: Industrial class.

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

1. AWS D1.1, “Structural Welding Code-Aluminum.”

PART 2 – PRODUCTS

2.1 METALS, GENERAL

A. Metal Surfaces, General: Provide materials with smooth, flat surfaces, unless otherwise indicated. For components exposed to view in the completed Work, provide materials without seam marks, roller marks, rolled trade names, or blemishes.

2.2 NONFERROUS METALS

A. Aluminum Extrusions: ASTM B 221

1. Structural shapes and framing members: Alloy 6063-T6.

2. Bearing bars of grating: 6061-T6 or 6063-T6

3. Grating crossbars: 6061-T1.

B. Aluminum Castings: ASTM B 26/B 26M, Alloy 443.0-F.

2.3 FASTENERS

A. General: Provide stainless-steel fasteners including bolts, screws and nuts.

1. Stainless steel bolts shall comply with ASTM F 593 Alloy Group 1.

2. Stainless steel nuts shall comply with ASTM F 594 Alloy Group 1.

B. Expansion Anchors: Anchor bolt and sleeve assembly with capability to sustain, without failure, a load equal to four times the load imposed when installed in concrete, as determined by testing according to ASTM E 488, conducted by a qualified independent testing agency.

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1. Material for Anchors: Alloy Group 1 stainless-steel bolts with ASTM F 593 and nuts complying with ASTM F 594.

2.4 MISCELLANEOUS MATERIALS

A. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal Alloy welded.

B. Bituminous Paint: Cold-applied asphalt emulsion complying with ASTM D 1187.

C. Non-shrink Grout: Nonmetallic, factory-packaged, nonstaining, noncorrosive, Non-gaseous grout complying with ASTM C 1107. Provide grout specifically recommended by manufacturer for exterior applications.

2.5 FABRICATION, GENERAL

A. Provide complete stair assemblies, including metal framing, hangers, struts, clips, brackets, bearing plates, and other components necessary to support and anchor stairs and platforms on supporting structure.

1. Join components by welding, unless otherwise indicated.

2. Use connections that maintain structural value of joined pieces.

B. Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch, unless otherwise indicated.

Remove sharp or rough areas on exposed surfaces.

C. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work.

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

E. Weld connections to comply with the following:

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.

F. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners where possible. Where exposed fasteners are required, use Phillips flat-head (countersunk) screws or bolts unless otherwise indicated.

Locate joints where least conspicuous.

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G. Fabricate joints that will be exposed to weather in a manner to exclude water.

Provide Weep holes where water may accumulate.

2.6 ALUMINUM-FRAMED STAIRS AND PLATFORMS

A. Stair and Platform Framing:

1. Fabricate stringers of aluminum channels.

a. Provide closures for exposed ends of channel stringers.

2. Construct platforms of aluminum channel headers and miscellaneous framing members as indicated.

3. Weld stringers to headers; weld framing members to stringers and headers.

2.7 FINISHES

A. Comply with NAAMM’s “Metal finishes Manual for Architectural and Metal Products” for recommendations for applying and designating finishes.

B. Bituminous Paint: Cold-applied asphalt emulsion complying wth ASTM D 1187.

PART 3 – EXECUTION

3.1 INSTALLATION, GENERAL

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

Include threaded fasteners for concrete and masonry inserts, through-bolts, lag bolts, and other connectors.

B. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installing metal stairs. Set units accurately in location, alignment, and elevation, measured from established lines and levels and free of rack.

C. Fit exposed connections accurately together for form hairline joints. Weld connections that are not to be left as exposed joints but cannot be shop welded because of shipping size limitations. Do not weld, cut or abrade surfaces of exterior units that have been hot-dip galvanized after fabrication and are for bolted or screwed field connections.

D. Field Welding: Comply with the following requirements:

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 expose welds and surfaces smooth and blended so no roughness shows after and contour of welded surface matches that of adjacent surface.

3.2 INSTALLING METAL STAIRS AND PLATFORMS WITH GROUTED BASEPLATES

A. Clean concrete and masonry bearing surfaces of bond-reducing materials and roughen to improve bond to surfaces. Clean bottom surface of baseplates and coat with bituminous paint.

B. Set aluminum baseplates on wedges, shims or leveling nuts. After stairs have been positioned and aligned, tighten anchor bolts. Do not remove wedges or shims, but, if protruding, cut off flush with edge of bearing plate before packing with grout.

1. Use non-metallic, non-shrink grout, unless otherwise indicated.

2. Pack grout solidly between bearing surfaces and plates to ensure that no voids remain.

3.3 ADJUSTING AND CLEANING

A. Clean aluminum by washing thoroughly with clean and soap and rinsing with clean water.

END OF SECTION 05515

Section 05520 – Handrails and Railings

Public Water System Upgrades 05520-1

DIVISION 5 - METALS

SECTION 05520 - HANDRAILS AND RAILINGS

1.01 SECTION INCLUDES

A. Aluminum pipe handrails

1.02 RELATED SECTIONS

A. Section 03600 – Grout.

1.03 REFERENCES

A. ASTM B211 - Aluminum-Alloy Bars, Rods, and Wire.

B. ASTM B221 - Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes.

C. ASTM B241 - Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube.

D. ASTM B483 - Aluminum and Aluminum-Alloy Drawn Tubes for General Purpose Applications.

1.04 DESIGN REQUIREMENTS

A. Railing assembly, wall rails, and attachments to resist following without damage or permanent set:

1. Concentrated load of 200 lbs. applied at any point in any direction.

2. Uniform load of 50 lbs. per linear ft. applied simultaneously in both vertical and horizontal directions.

3. Concentrated and uniform loads above need not be assumed to act concurrently.

1.05 SUBMITTALS

B. Shop Drawings: Indicate profiles, sizes, connection attachments, anchorage, size and type of fasteners, and accessories.

C. Samples: Submit two 6 inch long samples of handrail. Submit two samples of elbow and tee.

1.06 DELIVERY STORAGE AND HANDLING

Public Water System Upgrades 05520-2

A. Deliver, store, protect and handle products to site in accordance with manufacturer's instructions.

1.07 FIELD MEASUREMENTS

A. Verify that field measurements are as indicated on Shop Drawings.

2.01 ALUMINUM RAILING SYSTEM

A. Rails and Posts: 1-1/2 inch diameter, extruded tubing conforming to ASTM B221.

B. Fittings: Elbows, T-shapes, wall brackets, escutcheons; machined aluminum.

C. Mounting: Adjustable brackets and flanges, with aluminum inserts for casting in concrete and aluminum brackets for embedding into masonry. As recommended by manufacturer, provide protection against corrosion. Use toothed steel or lead expansion bolt devices for drilled-in-place anchors. Provide removable sections where noted on Drawings.

D. Splice Connectors: Collar with locking set screws; machined aluminum.

E. Exposed Fasteners: Flush countersunk screws or bolts; consistent with design of railing.

F. Finish: Class I clear anodized finish, AA-M32C22A41; Medium satin directional textured mechanical finish; chemical etch, medium matte; 0.7 mil min. thick clear anodic coating. Apply Class I finish to all railings.

G. Provide weepholes or other means for evacuation of entrapped water in hollow sections of railing members.

H. Provide wall returns at ends of wall mounted handrails, except where otherwise

I. Close exposed ends of handrail and railing members by use of manufacturer's standard prefabricated end fittings.

J. Provide toe boards at railings around openings and at edge of open-sided floors and platforms. Fabricate to dimensions and details shown, or if not shown, use manufacturer's standard section to provide toe boards 4 inches high.

2.02 MISCELLANEOUS MATERIALS

A. Non-Shrink, Non-Metallic Grout: As specified in Section 03600 – Grout.

B. Welding Electrodes and Filler Metal: Provide type and alloy of filler metal and electrodes as recommended by producer of metal to be welded, and as required for color match, strength and compatibility in fabricated items.

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C. Bituminous Paint: SSPC-Paint 12 (cold-applied asphalt mastic).

2.03 FABRICATION

A. Fit and shop assemble components in largest practical sizes, for delivery to site.

B. Fabricate components with joints tightly fitted and secured.

C. Exposed Mechanical Fastenings: Flush countersunk screws or bolts; unobtrusively located; consistent with design of component, except where specifically noted otherwise.

D. Supply components required for anchorage of fabrications. Fabricate anchors and related components of same material and finish as fabrication, except where specifically noted otherwise.

E. Continuously seal joined pieces by continuous welds.

F. Grind exposed joints flush and smooth with adjacent finish surface. Make exposed joints butt tight, flush, and hairline. Ease exposed edges to small uniform radius.

G. Accurately form components to suit stairs and landings, to each other, to building structure, and to tank structures.

3.01 EXAMINATION

A. Verify that field conditions are acceptable and are ready to receive work.

B. Beginning of installation means erector accepts existing conditions.

3.02 PREPARATION

A. Supply items required to be cast into concrete or embedded in masonry with setting templates, to appropriate sections.

3.03 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Provide all anchors and accessories required for connecting railings to structure.

Anchor railing to structure.

C. Perform cutting, drilling and fitting required for installation of handrails and railings.

Set work accurately in location, alignment and elevation, plumb, level, true and free of slack, measured from established lines and levels. Do not weld, cut or abrade surfaces of handrails and railing components which have been coated or finished after fabrication, and are intended for field connection by mechanical means without

Public Water System Upgrades 05520-4 further cutting or fitting.

D. Corrosion Protection: Coat concealed surfaces of aluminum, which will be in contact with grout, concrete, masonry, wood, or dissimilar metals, with a heavy coat of bituminous paint.

E. Adjust handrails and railings prior to anchoring to ensure matching alignment at abutting joints. Space posts at interval indicated, or if not indicated, as required by design loadings.

F. Anchor posts in new concrete by means of sleeves preset and anchored into concrete. After posts have been inserted into sleeves, fill annular space between posts and sleeve solid with non-shrink, non- metallic grout, mixed and placed to comply with grout manufacturer's directions.

1. Leave anchorage joint exposed; wipe off excess grout and leave 1/8 inch build-up, sloped away from post. For installation exposed on exterior or to flow of water, seal grout to comply with grout manufacturer's directions.

G. Anchor posts to metal surfaces with manufacturer's standard fittings designed for this purpose unless otherwise indicated.

H. Provide removable railing sections as indicated, using slip-fit metal sockets.

Accurately locate sockets to match post spacing.

I. Permanently connect railing components together using manufacturer's standard mechanical joinery method and fittings, unless otherwise indicated. Use wood blocks and padding to prevent damage to railing members and fittings. Seal recessed holes of exposed locking screws using plastic filler cement colored to match finish of handrails and railings.

J. Anchor railing ends into concrete or masonry with manufacturer's standard fittings designed for this purpose, unless otherwise indicated.

K. Anchor railing ends to metal surfaces with manufacturer's standard fittings using concealed fasteners, unless otherwise indicated.

L. Expansion Joints: Provide expansion joints at locations indicated, or if not indicated, at intervals not to exceed 40 feet. Provide slip- joint internal sleeve extending 2 inches beyond joint on either side; fasten internal sleeve securely to one side, locate joint within 6 inches of post.

M. Secure handrails to walls with manufacturer's standard wall brackets and end fittings, unless otherwise indicated.

1. For concrete and solid masonry walls, use drilled-in expansion shields and concealed hanger bolts, unless otherwise indicated.

2. For hollow masonry anchorage walls, use toggle bolts with square heads, unless otherwise indicated.

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3. For stud partition walls, use lag bolts fastened to wood blocking between studs. Coordinate with spacing of studs for accurate location of blocking members.

3.04 ADJUSTMENT AND CLEANING

A. Protect finishes of railings and handrails from damage during construction period by use of temporary protective coverings approved by railing manufacturer.

B. Remove protective covering at project completion or when directed by ENGINEER.

C. Restore finishes damaged during installation and construction period so that no evidence remains of correction work. Return items, which cannot be refinished in the field, to the shop; make required alterations and refinish entire unit, or provide new units as required.

END OF SECTION 05520

Section 05530 - Gratings

FSWA 05530 - 1

Fredericksburg WWTP

DIVISION 5 - METALS

SECTION 05530-GRATINGS

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

A. Section Includes:

1. Glass-fiber-reinforced plastic gratings.

2. FRP structural members and grating supports

3. Aluminum I-bar gratings.

B. Related Sections:

1. Division 5 Section “Pipe and Tube Railings” for metal pipe and tube handrails and railings.

1.3 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design FRP structural members using performance requirements and design criteria indicated.

B. The design of FRP products, including connections, shall be in accordance with governing building codes and standards as applicable.

C. Structural Performance: Gratings and structural members shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated.

1. Walkways and Elevated Platforms: Uniform load of 100lbf/sq. ft..

2. Limit deflection to L/360 pr 1/4 inch, whichever is less.

1.4 SUBMITTALS

A. Product Data: For the following:

1. Glass-fiber-reinforced plastic gratings.

2. Aluminum I-bar grating.

3. Clips and anchorage devices for gratings.

FSWA 05530 - 2

B. Shop Drawings: Included plans, sections, details, and attachments to other work.

C. Delegated-Design Submittal: For installed products indicated to comply with performance requirements and design criteria.

A. Welding qualifications: Qualify procedures and personnel according to the following:

1. AWS D1.2, “Structural Welding Code – Aluminum.”

1.6 PROJECT CONDITIONS

A. Field Measurements: Verify actual locations of walls and other construction contiguous with gratings by field measurements before fabrication.

1.7 COORDINATION

A. Coordinate installation of anchorages for gratings, grating frames, and supports.

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.

2.1 ALUMINUM

A. Aluminum, General: Provide alloy and temper recommended by aluminum producer for type of use indicated, and with not less than the strength and durability properties of alloy temper designated below for each aluminum form required.

B. Extruded Bars and Shapes: ASTM B 221, alloys as follows:

1. 6061-T6 or 6063-T6, for bearing bars of gratings and shapes.

2. 6061-T1, for grating crossbars.

2.2 FASTENERS

A. General: Unless otherwise indicated, provide type 304 stainless-steel fasteners.

Select fasteners for type, grade, and class required.

1. Provide stainless-steel fasteners for fastening FRP.

B. Stainless-Steel Bolts and Nuts: Regular hexagon-head annealed stainless-steel

FSWA 05530 - 3

bolts, nuts, and, where indicated, flat washers; ASTM F 593 for bolts and ASTM F 594 for nuts, Alloy Group 1.

C. Post-Installed Anchors: Torque-controlled expansion anchors or chemical anchors capable of sustaining, without failure, a load equal to six times the the load imposed when installed in unit masonry and four times the load imposed when installed in concrete, as determined by testing according to ASTM E 488, conducted by a qualified independent testing agency.

1. Material: Alloy Group 1 stainless-steel bolts, ASTM F 593, and nuts, ASTM F 594.

2.3 FABRICATION

A. Shop Assembly: Fabricate grating sections 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. Cut, drill, and punch material cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch unless otherwise indicated. Remove sharp or rough areas on exposed surfaces.

C. Form from materials of size, thickness, and shapes indicated, but not less than that needed to support indicated loads.

D. Fit exposed connections accurately together to form hairline joints.

E. Provide for anchorage of type indicated; coordinate with supporting structure.

Fabricate and space the anchoring devices to secure gratings, frames, and supports rigidly in place and to support indicated loads.

2.4 GLASS-FIBER-REINFORCED PLASTIC GRATINGS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into Work include, but are not limited to, the following:

1. Fibergrate Composite Structures Inc.

2. Seasafe, Inc.; a Gibraltar Industries company.

3. Or equal.

B. Pultruded Glass-Fiber-Reinforced Gratings: Bar gratings assembled from components made by simultaneously pulling glass fibers and extruding thermosetting plastic resin through a heated die under pressure to produce a product without voids and with a high glass-fiber content.

1. Configuration: I4015; 1-1/2-inch I-bars spaced 1 inch o.c. (40 percent

FSWA 05530 - 4

open).

2. Resin Type: Vinylester.

a. Flame-Spread Index: 25 or less when tested according to ASTM E 84.

b. U.S.D.A. Acceptance: Accepted for food processing applications.

3. Color: Yellow.

4. Traffic Surface: Applied abrasive finish.

C. Fabricate cutouts in grating sections for penetrations indicated. Arrange cutouts to permit grating removal without disturbing items penetration gratings.

2.5 ALUMINUM I-BAR GRATNGS

A. Manufacturers: Subject to compliance with requirements, available manufacturers officering products that may be incorporated into the Work include, but are not limited to, the following:

1. IKG Industries

2. Ohio Gratings

3. Or equal.

B. Pressure-Locked, Aluminum I-bar Grating: Fabricated by swaging crossbars between bars.

1. Bearing Bar Spacing: 11/16 inch o.c.

2. Bearing Bar Depth: 1-1/2 inches.

3. Bearing Bar Flange Width: 1/4 inch

4. Crossbar Spacing: 4 inches o.c.

5. Traffic Surface: Grooved.

6. Aluminum Finish: Mill finish.

C. Removable Grating Sections: Fabricate with banding bars attached by welding to entire perimeter of each section. Include anchors and fasteners of type indicated, as recommended by manufacturer for attaching to supports.

D. Fabricated cutouts in grating sections for penetrations indicated. Arrange cutouts to permit grating removal without disturbing items penetration gratings.

1. Edge-ban openings in grating that interrupt four or more bearing bars of same size and material as bearing bars.

2. Do not notch bearing bars at supports to maintain elevation.

2.6 FRP STRUCTURAL MEMBERS AND GRATING SUPPORTS

A. FRP Structural Members and Supports for Glass-Fiber-Reinforced Plastic Gratings: Fabricate from glass-fiber-reinforced plastic shapes of sizes, shapes, and profiles indicated and as necessary to receive gratings. Miter connections for perimeter angle frames. Cut, drill, and tap units to receive hardware and

FSWA 05530 - 5

similar items.

1. Unless otherwise indicated, use shapes made from same resin as gratings.

A. Fastening to In-Place Construction: Provide anchorage devices and fasteners where necessary for securing gratings to in-place construction. Include threaded fasteners for concrete and masonry inserts, through-bolts, lag bolts, and other connectors.

B. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installing gratings. Set units accurately in location, alignment, and elevation;

measured from established lines and levels and free of rack.

C. Provide temporary bracing or anchors in formwork for items that are to be built into concrete or masonry.

D. Fix exposed connections accurately together to form hairline joints.

1. Weld connections that are not to be left as exposed joints but cannot be shop welded because of shipping size limitations. Do not weld, cut, or abrade the surfaces of exterior units that have been hot-dip galvanized after fabrication and are for bolted or screwed field connections.

3.2 INSTALLING ALUMINUM I-BAR GRATING

A. General: Install gratings to comply with recommendations of referenced metal bar grating standards that apply to grating types and bar sizes indicated, including installation clearances and standard anchoring details.

B. Attach removable units to supporting members with type and size of clips and fasteners indicated or, if not indicated, as recommended by grating manufacturer for type of installation conditions shown.

3.3 INSTALLING GLASS-FIBER-REINFORCED PLASTIC GRATINGS

A. Comply with manufacturer’s written instructions for installing gratings.

Use manufacturer’s standard stainless anchor clips and hold-down devices for bolted connections.

B. All cuts ends are to be resin coated with manufacturer’s approved corrosion resistant resin.

END OF SECTION 05530

Division 6 – Wood and Plastic Section 06100 – Rough Carpentry

Public Water System Upgrades 06100 - 1

DIVISION 6 - WOOD AND PLASTIC

SECTION 06100 – ROUGH CARPENTRY

A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

A. This section relates to rough carpentry and finish carpentry.

1.3 REFERENCES

A. MIL-L-1914-C Lumber and Plywood, Fire Retardant Treated.

B. MIL-V-13518C(1) Wood Preservative: Tetrachlorophenol and Pentachlorophenol, Surface Sealing Compound.

C. PS 1 – Construction and Industrial Plywood.

D. PS 20 – American Softwood Lumber Standard.

E. PS 51 – Hardwood and Decorative Plywood.

F. NFPA – National Design Specification for Wood Construction.

1.4 DEFINITIONS

A. Dimension Lumber: Lumber of 2 inches nominal or greater but less than 5 inches nominal in least dimension.

B. Lumber grading agencies, and the abbreviations used to reference them, including the following:

1. NLGA: National Lumber Grades Authority.

A. Rough Carpentry Lumber: Visible grade stamp, of agency certified by National Forest Products Association (NFPA).

B. Site Made Finish Carpentry: Architectural Wood Work Institute.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Do not deliver shop fabricated carpentry items until site conditions are adequate to receive the work.

Public Water System Upgrades 06100 - 2

B. Protect items from weather while in transit.

C. Store indoors in ventilated areas with a constant, minimum temperature of 60º F and maximum relative humidity of 25 to 55 percent.

2.1 ROUGH CARPENTRY MATERIALS

A. Lumber: PS 20; graded in accordance with established grading rules; maximum moisture content of 15-19 percent; of the following species and grades:

1. Structural Light Framing: Stress group A; select structural grade.

2. Non-Structural Light Framing: Stress group B; construction grade.

3. Studding: Stress group B; stud grade.

B. Softwood Plywood: PS 1; sheathing grade.

C. Nails, Spikes and Staples: Galvanized for exterior locations, high humidity locations and treated wood; plain finish for other interior locations; size and type to suite application.

D. Bolts, Nuts, Washers, Lags, Pins and Screws: Medium carbon steel; sized to suit application; galvanized for exterior locations, high humidity locations and treated wood; plain finish for other interior locations.

E. Joist Hangers: Sized and profiled to suit application; galvanized finish.

F. Fasteners: Toggle bolt type for anchorage to hollow masonry. Expansion shield and lag bolt type for anchorage to solid masonry or concrete. Bolts or power activated type for anchorage to steel.

G. Sill Flashings: 20 mil thick clear polyethylene sheet.

2.2 WOOD TREATMENT

A. Wood Preservative: in accordance with AWPB LP-22 ground contact application.

B. Brush apply two (2) coats of preservative treatment on wood in contact with cementitious materials, roofing and related metal flashings. Apply preservative treatment in accordance with manufacturer’s recommendations. Ensure site-sawn ends are similarly treated. Allow preservative to cure prior to erecting members.

2.3 FABRICATION

A. Fabricate finish carpentry items in accordance with the recommendations of AWI.

Public Water System Upgrades 06100 - 3

A. Set rough carpentry to required levels and lines, with members plumb, true to line, cut, and fitted. Fit rough carpentry to other construction; scribe and cope as needed for accurate fit. Locate nailers, blocking, and similar supports to comply with requirements for attaching other construction.

B. Framing Standard: Comply with AF&PA’s “Details for Conventional Wood Frame Construction,” unless otherwise indicated.

C. Construct members of continuous pieces of longest possible lengths. Do not splice structural members between supports, unless otherwise indicated.

D. Double wall framing members at openings over 100 square inches. Space short members above and below openings in same manner as for walls.

E. Provide double joist headers at joist ends and around floor and ceiling openings.

Bridge floor joists as detailed at midspan of members.

F. Place full width continuous sill flashings and sill seal insulation under framed walls placed on cementitious foundations. Lap joints minimum of four inches (4”).

G. Provide blocking and framing as indicated and as required to support facing materials, fixtures, specialty items, and trim.

1. Provide metal clips for fastening gypsum board or lath at corners and intersections where framing or blocking does not provide a surface for fastening edges of panels. Space clips not more than 16 inches o.c.

H. Sort and select lumber so that natural characteristics will not interfere with installation or with fastening other materials to lumber. Do not use materials with defects that interfere with function of member or pieces that are too small to use with minimum number of joints or optimum joint arrangement.

I. Securely attach rough carpentry work to substrate by anchoring and fastening as indicated, complying with the following:

1. NES NER-272 for power-driven fasteners.

2. Table 2304.9.1, “Fastening Schedule,” in ICC’s 2006 International Building

Code.

J. Use common wire nails, unless otherwise indicated. Select fasteners of size that will not fully penetrate members where opposite side will be exposed to view or will receive finish materials. Make tight connections between members. Install fasteners without splitting wood; do not countersink nail heads, unless otherwise

3.2 WOOD BLOCKING AND NAILER INSTALLATION

Public Water System Upgrades 06100 - 4

A. Install where indicated and where required for attaching other work. Form to shapes indicated and cut as required for true line and level of attached work. Coordinate locations with other work involved.

B. Attach items to substrates to support applied loading. Recess bolts and nuts flush with surfaces, unless otherwise indicated.

END OF SECTION 06100

Section 06112 - Sheathing

FSWA

Public Water System Upgrades 06112-1

DIVISION 6 - WOOD AND PLASTIC

SECTION 06112 - SHEATHING

A. Roof Sheathing.

1.02 REFERENCES

A. ALSC - American Lumber Standards Committee: Softwood Lumber Standards.

B. APA - American Plywood Association

1.03 SUBMITTALS

B. Product Data: Manufacturer’s product and complete installation data for all materials in this Specification.

C. Manufacturers Certificate: Certify that products conform to specified requirements.

1.04 QUALITY ASSURANCE

A. Perform work in accordance with the following agencies:

1. Lumber Grading Agency: Certified by ALSC.

2. Plywood Grading Agency: Certified by APA.

1.05 DELIVER, STORAGE AND PROTECTION

A. Transport, handle, store and protect products according to Section 01610.

1.06 PROJECT CONDITIONS

A. Install roof sheathing during dry weather only.

2.01 ROOF SHEATHING MATERIALS

A. Contractor has option to provide either of the following.

1. Plywood Roof Sheathing: APA Rated Sheathing Exterior.

Section 06112 - Sheathing

FSWA

Public Water System Upgrades 06112-2

2. Oriented Strand Board (OSB) APA Rated Sheathing.

B. Span Rating: As required to suit rafter spacing indicated.

C. Exposing Durability Classification: Exterior

D. Size: 48” x 96 sheets. Thickness as needed to comply with requirements specified but not less 5/8".

2.02 ACCESSORIES

A. Fasteners and Anchors:

1. Fasteners: Hot dipped zinc coated complying with ASTM A 153/A 153 M.

2. Nails: ASTM F 1667

A. Report and correct defects prior to roof sheathing installation.

3.02 ROOF SHEATHING INSTALLATION

A. Secure roof sheathing with longer edge perpendicular to framing members and with ends staggered and sheet ends over bearing.

B. Use sheathing clips between sheets between roof framing members.

C. Nail to wood framing.

D. Space panels 1/8 inch apart of edge and nail.

END OF SECTION 06112

Section 06114 – Wood Blocking and Curbing

Fredericksburg WWTP 06114-1

DIVISION 6 - WOOD AND PLASTIC

SECTION 06114 – WOOD BLOCKING AND CURBING

A. Roof curbs and cants.

B. Blocking in wall and roof openings.

C. Wood furring and grounds.

D. Wood treatment.

A. ALSC - American Lumber Standards Committee: Softwood Lumber Standards.

B. APA - American Plywood Association: Grades and Standards.

C. FS TT-W-571 – Wood Preservation: Treating Practices.

D. AWPA – American Wood Preservers Association: C1 – All Timber Products

Preservative Treatment by Pressure Process.

E. NFPA – National Forest Products Association.

F. SFPA – Southern Forest Products Association.

G. WWPA – Western Wood Products Association.

B. Provide technical data on wood preservative materials and application instructions.

1.4 QUALITY ASSURANCE

A. Perform work in accordance with the following agencies:

1. Lumber Grading Agency: Certified by ALSC.

2. Plywood Grading Agency: Certified by APA.

A. Lumber Grading Rules: NFPA, SFPA, WWPA.

Section 06114 – Wood Blocking and Curbing

Fredericksburg WWTP 06114-2

B. Softwood Lumber: Southern Pine Species, Structural No. 1 grade, 19 percent maximum moisture content.

C. Plywood: APA Grade C-D, with waterproof glue, sanded.

D. Fasteners: Hot-dip-galvanized steel for exterior, high humidity and treated wood locations; plain finish elsewhere; size and type to suit condition.

E. Anchors: Toggle bolt type for anchorage to hollow masonry. Expansion shield and log bolt type for anchorage to solid masonry or concrete. Bolts or ballistic fasteners for anchorage to steel.

2.2 WOOD TREATMENT

A. Wood Preservative (Pressure Treatment): AWPA Treatment LP22 using waterborne preservative.

3.1 SITE APPLIED WOOD TREATMENT

A. Treat all sawn ends as follows: Brush apply two (2) coats of preservative treatment on wood in contact with cementitious materials, roofing and related flashings.

B. Apply preservative treatment in accordance with manufacturer’s instructions.

C. Allow preservative to cure prior to erecting members.

3.2 INSTALLATION

A. Erect wood framing members level and plumb.

B. Space framing and furring 16 inches oc.

C. Curb all roof openings except…