SECTION 05 73 00.30

DECORATIVE METAL RAILINGS - VISION

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PART 1    GENERAL
1.1	SECTION INCLUDES
A.	Aluminum decorative railing system.
B.	Stainless steel decorative railing system.
C.	Infill system for pipe and tube railings including:
1.	Glass panels.
2.	Resin panels.
1.2	RELATED SECTIONS
A.	Section 05 73 00.10 - Decorative Metal Railings - KLEAR.
B.	Section 05 73 00.20 - Decorative Metal Railings - VUE
C.	Section 05 73 00.40 - Decorative Metal Railings - INTERNA RAIL 3-LINE.
D.	Section 05 73 00.50 - Decorative Metal Railings - INTERNA RAIL 2-LINE.
E.	Section 05 73 00.60 - Decorative Metal Railings - SPEED RAIL.
F.	Section 05 73 00.70 - Decorative Metal Railings - Structural Glass
G.	Section 05 73 00.80 - Decorative Metal Railings - Button Glass.
H.	Section 08 80 00 - Glazing: Glass panels for Infill Panels.
1.3	REFERENCES
A.	American Architectural Manufacturers Association (AAMA):
1.	AAMA 2604 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels.
B.	Americans with Disabilities Act Accessibility Guidelines (ADAAG).
C.	ASTM International (ASTM):
1.	ASTM A 167 - Stainless and heat resisting Chromium-Nickel steel plate, sheet and strip.
2.	ASTM A 269 - Stainless and heat resisting Chromium-Nickel steel plate, sheet and strip.
3.	ASTM A312 - Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.
4.	ASTM A 1008 - Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable.
5.	ASTM B 26 - Standard Specification for Aluminum-Alloy Sand Castings.
6.	ASTM B 209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate.
7.	ASTM B 210 - Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes.
8.	ASTM B 221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.
9.	ASTM B 247 - Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings.
10.	ASTM B 429 - Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube.
11.	ASTM C 1048 - Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass.
12.	ASTM D 1187 - Standard Specification for Asphalt-Base Emulsions for Use as Protective Coatings for Metal.
13.	ASTM E 935 - Standard Test Methods for Performance of Permanent Metal Railing Systems and Rails for Buildings.
D.	Code of Federal Regulations (CFR):
1.	16 CFR 1201 - Safety Standard for Architectural Glazing Materials.
E.	International Building code (IBC).
1.4	SUBMITTALS
A.	Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.	Product Data: Manufacturer's data sheets on each product to be used, including:
1.	Railing, grout, anchoring cement and paint products.
2.	Preparation instructions and recommendations.
3.	Storage and handling requirements and recommendations.
4.	Installation methods.
C.	Shop Drawings: Prior to fabrication submitted which include the following:
1.	Plan views showing location of handrail required for the project with all necessary dimensions.
2.	Detail drawings which show standard handrail elevations, typical railing connections, anchoring systems and expansion joints.
3.	Drawings shall be signed and sealed by a structural engineer indicating compliance with design loads specified.
D.	Samples for Initial Selection: For products involving selection of color, texture, or design.
E.	Verification Samples: For each finish product specified, two samples, minimum size 6 inch (152 mm) square, representing actual product, color, and patterns.
F.	Mill Certificates: Signed by manufacturers of stainless-steel products certifying that products furnished comply with requirements.
G.	Qualification Data: For professional engineer.
H.	Product Test Reports: Supplier shall submit calculations and test reports for complete system. Test Data perASTM E 935.
1.5	QUALITY ASSURANCE
A.	Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with a minimum five years documented experience.
B.	Installer Qualifications: All products listed in this section are to be installed by a single installer with a minimum of five years demonstrated experience in installing products of the same type and scope as specified.
C.	Source Limitations: Provide each type of product from a single manufacturing source to ensure uniformity.
D.	Mock-Up: Construct a mock-up with actual materials in sufficient time for Architect's review and to not delay construction progress. Locate mock-up as acceptable to Architect and provide temporary foundations and support.
1.	Unless indicated otherwise on the Drawings, approximate size of mockup shall be 25 to 50 percent of full size required, using full size components.
2.	Intent of mock-up is to demonstrate quality of workmanship and visual appearance.
3.	If mock-up is not acceptable, rebuild mock-up until satisfactory results are achieved.
4.	Retain mock-up during construction as a standard for comparison with completed work. 
5.	Do not alter or remove mock-up until work is completed or removal is authorized.
6.	Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
1.6	PRE-INSTALLATION CONFERENCE
A.	Convene a conference approximately two weeks before scheduled commencement of the Work. Attendees shall include Architect, Contractor and trades involved. Agenda shall include schedule, responsibilities, critical path items and approvals.
1.7	DELIVERY, STORAGE, AND HANDLING
A.	Store and handle in strict compliance with manufacturer's written instructions and recommendations.
B.	Protect from damage due to weather, excessive temperature, and construction operations.
1.8	PROJECT CONDITIONS
A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
B.	Field Measurements: Verify actual locations of walls and other construction contiguous with railings by field measurements before fabrication and indicate measurements on Shop Drawings.
C.	Coordinate installation of anchorages for railings. 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.
1.9	COORDINATION AND SCHEDULING
A.	Coordinate installation of anchorages for railings. 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.
B.	Schedule installation so wall attachments are made only to completed walls. Do not support railings temporarily by any means that do not satisfy structural performance requirements.
1.10	WARRANTY
A.	Manufacturer's Warranty: Provide manufacturer's standard limited warranty against manufacturing defect, outlining its terms, conditions, and exclusions from coverage.
PART 2    PRODUCTS
2.1	MANUFACTURERS
A.	Acceptable Manufacturer: Hollaender Mfg. Co., which is located at:<BR />10285 Wayne Ave., P. O. Box 156399<BR />Cincinnati, OH 45215-6399<BR />Toll Free Tel: 800-772-8800<BR />Tel: 513-772-8800<BR />Fax: 800-772-8806<BR />Email: request info (sales@hollaender.com);Web: https://architecturalhandrail.hollaender.com | https://www.hollaender.com 
B.	Substitutions: Not permitted.
C.	Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
2.2	PERFORMANCE REQUIREMENTS
A.	Railing must conform to apply to pertinent sections of the following codes:
1.	Applicable state and local building codes, including IBC.
2.	ADAAG.
B.	Handrail for Ramps and Stairs:
1.	Ramps with a rise greater than 6 inch (152 mm) shall have handrails on both sides.
2.	Handrail Height: Installed height of 34 to 38 inch (864 to 965 mm) above ramp surface.
3.	A curb, rail, wall, or barrier shall be provided to serve as edge protection.
a.	Curb: 4 inch (102 mm) minimum height.
b.	Barrier: Constructed to prevent the passage of a 4 inch (102 mm) diameter sphere above ramp grade level.
4.	Circular Cross Section Handrails: Gripping surface diameter between 1-1/2 inch (38 mm) and 2 inch (51 mm).
5.	Clearance between Wall or Post Surface and Handrail: 1-1/2 inch (38 mm) minimum.
6.	At the top and bottoms of handrail sections that stop at a landing, handrail shall extend 12 inch (305 mm) horizontally beyond the top riser and 12 inch (305 mm) horizontally beyond the bottom tread.
7.	Ramps with 30 inch (762 mm) or more drop off to grade shall require guards.
8.	Handrail shall be continuous, without interruption by newel posts or other obstructions.
9.	Handrails shall return to a wall, guard or walking surface.
C.	Structural Performance: Railings capable of withstanding effects of gravity loads and the following loads and stresses within limits and under conditions indicated:
1.	Handrails:
a.	Uniform load of 50 lbf per ft (729.7 N per m) applied in any direction.
b.	Concentrated load of 200 lbf (889.6 N) applied in any direction.
c.	Uniform and concentrated loads need not be assumed to act concurrently.
2.	Top Rails of Guards:
a.	Uniform load of 50 lbf per ft (729.7 N per m) applied in any direction.
b.	Concentrated load of 200 lbf (889.6 N) applied in any direction.
c.	Uniform and concentrated loads need not be assumed to act concurrently.
3.	Infill Area of Guards:
a.	Horizontal concentrated load of 50 lbf per sq ft (2394 N per sq m)
b.	at any point in system, including panels, intermediate rails, balusters, or other elements composing infill area. Load on infill area need not be assumed to act concurrently with loads on top rails.
c.	Glass infill panels shall have a safety factor of 4 included in the calculation.
D.	Thermal Movement: Exterior railings shall allow for thermal movement resulting from the following maximum change (range) in ambient and surface temperatures by preventing buckling, opening 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 degrees F (48.9 degrees C), ambient; 180 degrees F (82.2 degrees C), material surfaces.
E.	Corrosion Control: Prevent galvanic action and other corrosion types. Insulate metals and other materials from direct contact with incompatible materials.
2.3	MATERIALS, GENERAL
A.	Metals, General:
1.	Metal Surfaces, General: Provide materials with smooth surfaces, without seam marks, roller marks, rolled trade names, stains, discolorations, or blemishes.
2.	Brackets, Flanges, and Anchors: Cast or formed metal of same type of material and finish as supported rails, unless otherwise indicated.
B.	Steel: Perforated Sheet: ASTM A1008.
C.	Bituminous Paint: Cold-applied asphalt emulsion complying withASTM D 1187.
2.4	ALUMINUM HANDRAIL SYSTEM
A.	Basis of Design: VISION Aluminum for Glass as manufactured and assembled by Hollaender Manufacturing.
B.	Aluminum:
1.	Aluminum, General: Provide alloy and temper recommended by aluminum producer and finisher for type of use and finish indicated, and with not less than the strength and durability properties of alloy and temper designated below for each aluminum form required.
2.	Extruded Bars and Tubing: ASTM B 221, Alloy 6063-T5/T52, 6005-T5.
3.	Extruded Structural Pipe and Round Tubing: ASTM B 429, Alloy 6061-T6. Provide 1.90 inch (48 mm) OD Standard Weight, Schedule 40 pipe for rails, Schedule 80 for posts, unless otherwise indicated.
4.	Drawn Seamless Tubing: ASTM B 210, Alloy 6063-T832
5.	Plate and Sheet: ASTM B 209, Alloy 6061-T6
6.	Die and Hand Forgings: ASTM B 247, Alloy 6061-T6
7.	Base Flange Castings: ASTM B 26/B 26M, Alloy Almag 535
8.	Structural Fittings and Panel Clips: Alloy 6063-T6.
2.5	STAINLESS STEEL HANDRAIL SYSTEM
A.	Basis of Design: VISION SS Stainless Steel Railing for Glass as manufactured and assembled by Hollaender Manufacturing.
B.	Stainless Steel:
1.	Type: 304.
2.	Type: 316.
3.	Stainless and heat resisting Chromium-Nickel steel plate, sheet and strip,ASTM A 167.
4.	Seamless and welded austenitic stainless steel tubing for general service, ASTM A 269.
5.	Seamless and welded austenitic stainless steel pipe, ASTM A312.
C.	Configuration:
1.	Posts: 1.9 inch (48 mm) outside diameter, 0.120 inch (3 mm) wall.
2.	Top Rail: 1.9 inch (48 mm) outside diameter, 0.080 inch (2 mm) wall.
3.	Assist Rail: 1.5 inch (38 mm) outside diameter, 0.062 inch (1.6 mm) wall.
2.6	INFILL PANELS
A.	Glass Infill Panels for Railings:
1.	Tempered Glass: ASTM C 1048, Fully Tempered, Condition A, Type 1, Quality Q3. 
a.	Comply with properties indicated for class, thickness, and manufacturing process that have been tested for surface and edge compression according to ASTM C1048 and for impact strength according to16 CFR 1201for category 2 materials.
b.	Glass Type: 3/8 inch (10 mm) tempered. 
B.	Resin Infill Panels for Railings:
1.	Acrylic, 3/8 inch (10 mm) thickness.
2.	Basis of Design: Lumicor.
3.	Basis of Design: To be selected by Architect.
4.	Basis of Design: _____.
C.	Metal Infill for Railings:
1.	Perforated Steel Sheet: Gage as necessary to withstand loads indicated, minimum 14 gauge (1.9 mm).
2.	Pattern: 1/2 inch (13 mm) diameter holes spaced at 11/16 inch (17 mm) on center.
3.	Frame: Steel U-channel, minimum 11 gauge (3 mm), corners welded and ground smooth. To assure minimum maintenance and maximum corrosion protection, bottom channel of frame shall be open, in order to evacuate all water.
4.	Corrosion Protection
a.	Entire panel to be electro-coated. Electro-coating to be PPG Powercron 8000 or equivalent, and shall cover all exposed surfaces, especially interior of U channel. Electro-coating to be applied in four steps: pre-treatment, electro-coat, post rinse and bake oven.
b.	Entire panel shall then be powder coated with Silver powder coat, or equivalent powder coat color of architect's choice. Powder to be TGIC Polyester, minimum AAMA 2604.
5.	Panels to be maximum 3'-6" (1067 mm) post spacing. Since panels will be captured only on sides, post spacing of 3'-6" (1067 mm) needed to ensure they meet the code requirement of minimal deflection with a 50 pound (23 kg) load applied to a one square foot (.09 square meter) area of panel.
2.7	FASTENERS
A.	Type 302 stainless-steel fasteners.
B.	Fasteners Anchoring Railings to Other Construction: Select fasteners of type, grade, and class required to produce connections suitable for anchoring railings to other types of construction indicated and capable of withstanding design loads.
C.	Structural Fasteners for Interconnecting Railing Components: 
1.	The stainless steel set screw shall have an internal /external, reverse knurl, cup point. This combination shall prevent any loosening of the system due to changes in temperature or vibration.
2.	Systems using pop rivets or adhesives will not be accepted.
3.	Aluminum Railings:
a.	The top rail shall be connected to the main body of the post with Hollaender 255-8 EXT tees. 
b.	Tee fittings shall be manufactured from 6063-T6 aluminum alloy and shall be internally connected to the rail by means of 5/16 inch (7.9 mm) set screw that engages a lug on the 255-8 tee through the wall of the Schedule 80 post. 
4.	Stainless Steel Railings:
a.	The top rail shall be connected to the main body of the post with Hollaender 655-8 tees. 
b.	Tee fittings shall be manufactured from 304 SS alloy and shall be internally connected to the rail by means of 5/16 inch (7.9 mm) set screw that engages a lug on the 655-8 tee through the wall of the 0.120 inch (3.05 mm) thick post.
D.	Infill Panels:
1.	Aluminum Railings:
a.	Secured to the post using Hollaender 144-8 two piece panel clips. 
b.	Clips will be manufactured from 6063-T6 aluminum alloy and secured to the posts using anodized aluminum tubular rivet nuts, size 5/16 (7.9 mm) - 18 UNC, and stainless steel socket head cap screws. 
2.	Stainless Steel Railings:
a.	Secured to the post using Hollaender 644-8 two piece panel clips. 
b.	Clips will be manufactured from 304 stainless steel alloy and secured to the posts using tubular rivet nuts, size 5/16 (7.9 mm) - 18 UNC, and stainless steel socket head cap screws. 
2.8	FLANGES AND ANCHORS
A.	Anchors: Provide concrete adhesive anchors where indicated or necessary.
B.	Flanges, Aluminum Railing:
1.	For level railing, provide Hollaender 142-8 internal cast flanges with 4 holes, capped with Hollaender 242-8 anodized aluminum escutcheon plate.
2.	For raked railing on steel stringers, use Hollaender 146I-8 internal spud with integral cover plate.
3.	For side mount, use Hollaender 52E-8 flange.
C.	Flanges, Stainless Steel Railing:
1.	For level railing, provide Hollaender 642-8 internal cast flanges with 4 holes, capped with Hollaender 642-8 stainless steel escutcheon plate.
2.	For raked railing on steel stringers, use Hollaender 646I-8 internal spud with integral cover plate.
3.	For side mount, use Hollaender 652E-8 flange.
2.9	FABRICATION
A.	General: Fabricate railings to comply with requirements indicated for design, dimensions, member sizes and spacing, details, finish, and anchorage, but not less than that required to support structural loads.
B.	Assemble railings in the shop to greatest extent possible to minimize field splicing and assembly. Disassemble units only as necessary for shipping and handling limitations. Clearly mark units for reassembly and coordinated installation. Use connections that maintain structural value of joined pieces.
C.	Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch (0.79 mm), unless otherwise indicated. Remove sharp or rough areas on exposed surfaces.
D.	Form work true to line and level with accurate angles and surfaces.
E.	Fabricate connections that will be exposed to weather in a manner to exclude water. Provide weep holes where water may accumulate.
F.	Cut, reinforce, drill, and tap as indicated to receive finish hardware, screws, and similar items.
G.	Connections: Fabricate railings with nonwelded connections, unless otherwise indicated.
H.	Nonwelded Connections: 
1.	Connect members with concealed mechanical fasteners and fittings.
2.	Fabricate members and fittings to produce flush, smooth, rigid, hairline joints.
3.	Fittings to be of the internal double tang type activated by a reverse knurl cup point set screw. Reverse knurl is required to ensure that screw does not come loose under vibration. Plain cup point screws will not be accepted. Fittings to be fastened to pipe by means of a 5/16 inch (7.9 mm) tubular rivet nut and socket head cap screw.
I.	Form changes in direction as follows:
1.	Aluminum Railings: By flush bends or by inserting prefabricated flush-elbow fittings.
2.	Stainless Steel Railings: By flush bends.
J.	Form simple and compound curves by bending members in jigs to produce uniform curvature for each repetitive configuration required; maintain cross section of member throughout entire bend without buckling, twisting, cracking, or otherwise deforming exposed surfaces of components.
K.	Close exposed ends of railing members with prefabricated end fittings.
L.	Provide wall returns at ends of wall-mounted handrails, unless otherwise indicated. Close ends of returns unless clearance between end of rail and wall is 1/4 inch (6.4 mm) or less.
M.	Brackets, Flanges, Fittings, and Anchors: Provide wall brackets, flanges, miscellaneous fittings, and anchors to interconnect railing members to other work, unless otherwise indicated. 
1.	Aluminum Railings: Flanges to be sand cast from aluminum alloy 535 with anodized finish and fastened directly to the post by means of two reverse knurl cup point set screws.
2.	Stainless Steel Railings: Flanges to be 304SS alloy.
N.	Fabricate splice joints for field connection using an epoxy structural adhesive if this is manufacturer's standard splicing method. Fabricate anchorage devices capable of withstanding loads imposed by railings. Coordinate anchorage devices with supporting structure.
2.10	FINISHES
A.	Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes.
B.	Protect mechanical finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping.
C.	Appearance of Finished Work: 
1.	Acceptable Variations: Appearance of abutting or adjacent pieces must be within one-half of the range of approved samples.
a.	Variations in appearance of other components are acceptable if they are within the range of approved samples and are assembled or installed to minimize contrast.
2.	Noticeable Variations: In same piece is not acceptable. 
3.	Provide exposed fasteners with finish matching appearance, including color and texture, of railings.
D.	Aluminum:
1.	Finish designations prefixed by AA comply with system established by Aluminum Association for designating aluminum finishes.
2.	Aluminum Pipe Finish: Anodize to AA-M10C22A41, Architectural class, 0.7 mil (0.02 mm) thickness or greater, unless indicated otherwise.
E.	Steel:
1.	Primer: Approximately 0.04 inch (1 mm) coating provided by minimum 4 step electrocoat process.
2.	Finish: Powdercoat.
a.	Color: As selected by Architect from manufacturer's full line.
b.	Color: As indicated on Drawings.
c.	Color: _____.
PART 3    EXECUTION
3.1	EXAMINATION
A.	Examine plaster and gypsum board assemblies, where reinforced to receive anchors, to verify that locations of concealed reinforcements have been clearly marked for installer. Locate reinforcements and mark locations if not already done.
B.	Do not begin installation until substrates have been properly constructed and prepared.
C.	If substrate preparation is the responsibility of another installer, notify Architect in writing of unsatisfactory preparation before proceeding.
3.2	PREPARATION
A.	Clean surfaces thoroughly prior to installation.
B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
3.3	INSTALLATION
A.	Install in accordance with manufacturer's instructions, approved submittals, and in proper relationship with adjacent construction.
B.	Fit exposed connections together to form tight, hairline joints.
C.	Perform cutting, drilling, and fitting required for installing railings. Set railings accurately in location, alignment, and elevation; measured from established lines and levels and free of rack.
1.	Do not weld, cut, or abrade surfaces of railing components that have been coated or finished after fabrication and that are intended for field connection by mechanical or other means without further cutting or fitting.
2.	Set posts plumb within a tolerance of 1/16 inch in 3 feet (1.6 mm in 1 m).
3.	Align rails so variations from level for horizontal members and variations from parallel with rake of steps and ramps for sloping members do not exceed 1/4 inch in 12 feet (6 mm in 3.6 m).
D.	Corrosion Protection: Coat concealed surfaces of aluminum that will be in contact with grout, concrete, masonry, wood, or dissimilar metals, with a heavy coat of bituminous paint.
E.	Adjust railings before anchoring to ensure matching alignment at abutting joints.
F.	Fastening to In-Place Construction: Use anchorage devices and fasteners where necessary for securing railings and for properly transferring loads to in-place construction.
G.	Attach handrails to wall with wall brackets. Provide brackets with 1-1/2 inch (38 mm) clearance from inside face of handrail and finished wall surface.
H.	Once installed, all handrails must be in compliance with the requirements of applicable federal, state and local building codes.
I.	Nonwelded Connections: Use mechanical joints for permanently connecting railing components. Use wood blocks and padding to prevent damage to railing members and fittings. 
J.	Expansion Joints: Install expansion joints at locations indicated but not farther apart than required to accommodate thermal movement. Provide slip-joint internal sleeve extending 2 inches beyond joint on either side, fasten internal sleeve securely to 1 side, and locate joint within 6 inches of post.
K.	Anchoring Railing Ends:
1.	Anchor railing ends to concrete and masonry with round flanges connected to railing ends and anchored to wall construction with anchors and bolts.
2.	Anchor railing ends to metal surfaces with flanges bolted to metal surfaces and connected to railing ends using nonwelded connections.
L.	Attaching Handrails to Walls:
1.	Attach handrails to wall with wall brackets. Provide brackets with 1-1/2 inch (38 mm) clearance from inside face of handrail and finished wall surface.
2.	Locate brackets as indicated or, if not indicated, at spacing required to support structural loads.
3.	Secure wall brackets to building construction as indicated, or if not indicated, as follows:
a.	For concrete and solid masonry anchorage, use drilled-in expansion shields and hanger or lag bolts.
b.	For hollow masonry anchorage, use toggle bolts.
c.	Provide blocking between studs in stud wall construction.
3.4	CLEANING AND PROTECTION
A.	Clean aluminum by washing thoroughly with clean water and soap and rinsing with clean water.
B.	Protect finishes of railings from damage during construction period with temporary protective coverings approved by railing manufacturer. 
C.	Remove protective coverings at time of Substantial Completion.
D.	Restore finishes damaged during installation and construction period so no evidence remains of correction work. Return items that cannot be refinished in the field to the shop; make required alterations and refinish entire unit, or provide new units.

END OF SECTION