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	SECTION 10240
	ROOF SCREENS
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	** NOTE TO SPECIFIER ** RoofScreen Mfg.; pre-engineered roof equipment screen products. . This section is based on the products of RoofScreen Mfg., which is located at: 347 Coral St. Santa Cruz, CA 95060 Toll Free Tel: 866-766-3727 Tel: 831-421-9230 Fax: 866-253-0738 Email: request info Web: www.roofscreen.com [ Click Here ] for additional information. RoofScreen Mfg. is a specialty manufacturing company that produces pre-engineered bolt-together screen wall systems designed to conceal air conditioners and other unsightly equipment on rooftops of commercial and industrial buildings. Our goal is to provide you with an affordable solution for concealing roof top equipment on your building. With the RoofScreen system, we can make it look good and blend in with the architecture, while providing the long maintenance free service life that you expect. The flexible design allows you to choose from virtually any color, style and type of paneling material to achieve the architectural look you desire. .10240 - ROOF SCREENS: ARCAT Copyright 2006 - 2007, All Rights Reserved.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Roof equipment screens and supporting steel framework.
		B.	Roof screen accessories.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 03300 - Cast-In-Place Concrete: Execution requirements for embedded anchors and attachments for metal fabrications specified by this section in concrete.
		B.	Section 04080 - Masonry Anchorage and Reinforcement: Installation of anchors.
		C.	Section 05120 - Structural Steel: Metal Framing.
		D.	Section 05311 - Steel Floor Deck.
		E.	Section 05500 - Metal Fabrications: Frames and supports.
		F.	Section _______ - Roof Curbs.
		G.	Section 09900 - Paints and Coatings: Field applied paint finish.
		H.	Section _______ - Roof Top Mechanical Equipment.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	ASTM A 500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.
		B.	ASTM A 653/A 653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
		C.	ASTM A 666 - Standard Specification for Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar.
		D.	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.
		E.	ASTM B 749 - Standard Specification for Lead and. Lead Alloy Strip, Sheet, and Plate Products.
		F.	ASTM D 4811 - Specification for EPDM Sheet Used In Single-Ply Roof Membrane.
		G.	ASTM D 6878 - Specification for Thermoplastic Polyolefin Based Sheet Roofing.
		H.	ASCE 7-95 - Minimum Design Loads for Buildings and Other Structures.
		I.	AWS A 2.4 - Standard Symbols for Welding, Brazing, and Nondestructive Examination.
		J.	AWS D1.1 - Structural Welding Code - Steel.
		K.	AWS D1.6 - Structural Welding Code - Stainless Steel.
	1.4	DESIGN / PERFORMANCE REQUIREMENTS
		A.	Design Loads: Comply with Building Code for site location and building height.
			1.	Design to resist ASCE 7-95 - Minimum Design Loads for Buildings and Other Structures.
			2.	Design all materials, assembly and attachments to resist snow, wind, suction and uplift loading at any point without damage or permanent set.
		B.	Structural Design: Prepare structural design calculations for screen framing and attachment to structure including reactions at base supports for verification of roof structure by Architect.
		C.	All welds to be performed by an AWS certified welder. Valid certification to be provided.
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be used, including:
			1.	Preparation instructions and recommendations.
			2.	Storage and handling requirements and recommendations.
			3.	Installation methods.
		C.	Shop Drawings: Layout and erection drawings showing typical cross sections and dimensioned locations of all frames and base supports. Include erection drawings, elevations, and details where applicable. Indicate welded connections using standard AWS A2.0 welding symbols. Indicate net weld lengths.
		D.	Design Data: Submit design calculations for structural components and components resisting wind loads.
	** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.
		E.	Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.
		F.	Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product, color, and patterns.
		G.	Manufacturer's Certificates: Certify products meet or exceed specified requirements.
		H.	Welders Certificates: Certify welders employed on the Work, verifying AWS qualification within previous 12 months.
		I.	Manufacturers warranties.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: Manufacturer with a minimum five years documented experience in producing pre-manufactured metal-framed equipment screens.
		B.	Design Qualifications: Provide structural design calculations stamped by a structural engineer registered to practice in the state in which this project is located.
		C.	Welders: AWS certified within previous 12 months.
		D.	Pre-Installation Meeting:
			1.	Convene at job site, at least seven calendar days prior to scheduled beginning of construction activities of this section, to review requirements of this section.
			2.	Require attendance by representatives of the installing subcontractor (who will represent the system manufacturer), the mechanical subcontractors and other entities affected by construction activities of this section.
			3.	Notify Architect four calendar days in advance of scheduled meeting date.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		E.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Locate in area designated by Architect.
			2.	Construct mock-up, one full screen section wide, including two roof supports.
			3.	Do not proceed with remaining work until workmanship, color, and location is approved by Architect.
			4.	Remove mock-up if required by Architect.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Receive, handle and store materials in conformance with the manufacturers printed instructions.
		B.	Store products undercover, in manufacturer's unopened packaging until ready for installation.
		C.	Protect materials from exposure to moisture.
		D.	Store materials in a dry, warm, ventilated weathertight location.
		E.	Protect metal fabrications from damage by exposure to weather.
		F.	Handling: Use a forklift or crane to move material. Do not lift the bundles by the metal bands.
			1.	Fork Lift: Spread the forks as far as possible to balance the load. Drive slowly when moving long bundles over uneven surfaces to avoid tipping the load
			2.	Crane: Position the canvas sling straps so that the space between the straps is at least 1/3 the length of the bundle. Use sling straps with looped ends running one end of the strap through the loop at the other end to cinch the bundle when lifted. When setting the load on the roof, put wood blocks under it to protect the roof and allow space to remove the sling straps.
			3.	Roof Placement: Spread the bundles and crates out as much as possible to avoid overloading the roof structure. Place the material directly over major supports such as beams or trusses.
			4.	Position bundles of tubing parallel to the slope of the roof and block prior to opening to prevent the tubing from rolling down the roof slope when unbundled.
	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 absolute limits.
		B.	Verify field measurements are as indicated on shop drawings.
	** NOTE TO SPECIFIER ** Manufacturer's warrantee is limited to five years from the data of substantial completion of the project and required replacement of part(s). A general extended warrantee is available at additional cost.
	1.9	WARRANTY
		A.	Manufacturer's warrantee is limited to five years
			1.	General Extended Warranty: 20 years covering complete framing system.
			2.	Panel Coating Warranty: 20 years covering film integrity, chalk resistance, and color change
	1.10	COORDINATION
		A.	Coordinate Work with other operations and installation of roofing materials to avoid damage to installed insulation and membrane materials.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: RoofScreen Mfg., which is located at: 347 Coral St. ; Santa Cruz, CA 95060; Toll Free Tel: 866-766-3727; Tel: 831-421-9230; Fax: 866-253-0738; Email: request info; Web: www.roofscreen.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	2.2	MATERIALS
		A.	Base Supports: Weldments fabricated from cold rolled steel conforming to ASTM A 1008 and fabricated with internal deck fastening points. After fabrication, apply minimum 2-4 mil baked on powder coat primer.
	** NOTE TO SPECIFIER ** Select one of the following height paragraphs as required to suit insulation thickness. Delete the paragraph not required.
			1.	Height 5 inches (127 mm).
			2.	Height 9 inches (229 mm).
			3.	Height 12 inches (305 mm).
	** NOTE TO SPECIFIER ** Select one of the following four Flashing Boot paragraphs as required to project requirements and delete the paragraphs not required. ** NOTE TO SPECIFIER ** The following all stainless boot is intended for use on roofs where the flange can be nailed to the deck.
		B.	Flashing Boot: Fabricated from 26 gauge, 304 stainless steel conforming to ASTM A 666, robotically fuse welded at seams for precision fit over base support. Provide with base flange that extends a minimum of 4 inches (102 mm) onto the roof surface on all four sides.
	** NOTE TO SPECIFIER ** Select one of the following two height paragraphs as required to suit insulation thickness. Delete the paragraph not required.
			1.	Height 5 inches (127 mm).
			2.	Height 9 inches (229 mm).
			3.	Adjust height for roofing and insulation by snipping corners and snapping off extension tabs to desired height.
	** NOTE TO SPECIFIER ** The following all stainless/lead boot is intended for use on built-up roofs over insulation, concrete or other substrate where the flange cannot be nailed or fastened to the substrate. The lead flange is soldered to the stainless steel riser portion.
		C.	Flashing Boot: Fabricated from 26 gauge, 304 stainless steel conforming to ASTM A 666, robotically fuse welded at seams for precision fit over base support. Provide with a lead base flange that is soldered to the riser and extends a minimum of 4 inches (102 mm) onto the roof surface on all four sides.
	** NOTE TO SPECIFIER ** Select one of the following two height paragraphs as required to suit insulation thickness. Delete the paragraph not required.
			1.	Height 5 inches (127 mm).
			2.	Height 9 inches (229 mm).
			3.	Adjust height for roofing and insulation by snipping corners and snapping off extension tabs to desired height.
	** NOTE TO SPECIFIER ** The following TPO boot is intended for use on TPO roofs with the TPO flange heat welded to the TPO roofing.
		D.	Flashing Boot: Fabricated 45 mil, white, single ply TPO sheet conforming to ASTM D 6878. Provide with base flange that extends a minimum of 5 inches (127 mm) onto the roof surface on all four sides.
	** NOTE TO SPECIFIER ** The following TPO boot is intended for use on EPDM roofs with the TPO flange adhered to the roofing using uncured EPDM 30 mil pressure sensitive tape.
		E.	Flashing Boot: Fabricated 60 mil, white, single ply TPO sheet conforming to ASTM D 6878. Provide with base flange that extends a minimum of 5 inches (127 mm) onto the roof surface on all four sides. Flange is sealed to EPDM roof with uncured EPDM 30 mil pressure sensitive tape.
		F.	Base Cap: Weldments fabricated from cold rolled steel conforming to ASTM A 1008 and fabricated to overlap base support and flashing boot a minimum of 2 inches (51 mm). After fabrication finish as follows:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs and delete the one not required.
			1.	Powder coat, minimum 2-4 mils baked on.
			2.	PVDF fluoropolymer, 1 mil, 2 coat, 70 percent.
			3.	Color: Dupont Black T6IC Polyester #PFB603S9.
	** NOTE TO SPECIFIER ** Gasket is optional but is recommended where assembly may be subject to standing water, ice and snow. Delete if not required.
		G.	Base Cap Gasket: EPDM with self-adhesive closed cell foam.
		H.	Framing: Carbon steel structural tubing with a 2.5 inch (64 mm) outside diameter conforming to ASTM A 500 with an Allied Tube "Gatorshield" triple layer galvanized coating. Provide with wall thickness as determined by structural calculations.
		I.	Connector Fittings: Fabricated from cold rolled steel conforming to ASTM A 1008. After fabrication, apply zinc plating conforming to ASTM B 633 Type 1, then baked on powder coating minimum 2-4 mil Dupont Black T6IC Polyester #PFB603S9.
		J.	Steel Z section: Steel sheet conforming to ASTM A 653, Class SS, with a G90 hot-dip galvanized coating.
		K.	Steel Hat Channel: Steel sheet conforming to ASTM A 653, Class SS, with a G90 hot-dip galvanized coating.
		L.	Hardware: Bolts, nuts, washers and screws 18-8 stainless steel.
		M.	Welding Materials: AWS D1.1; type required for materials being welded.
	** NOTE TO SPECIFIER ** Edit the following two Panel paragraphs as required for the project. Delete the paragraphs not required. Select the first paragraph for standard panel profile or edit the second paragraph for custom panel as required. Framing system is compatible with most manufacturer's panels. Framing may also be covered with stucco, EIFS and plywood with shingles. Contact the manufacturer for additional information.
		N.	Panel:
			1.	Profile:
	** NOTE TO SPECIFIER ** Select one of the following paragraphs and delete those not required.
				a.	IC72 V-Ribbed Panel.
				b.	T23 V-Ribbed Panel
				c.	TL17 Flat Panel.
				d.	R Formed Panel.
				e.	U Panel.
				f.	7/8 inch (22 mm) Corrugated.
				g.	4 inch (102 mm) continuous aluminum louvers.
			2.	Base Metal:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs and delete the one not required.
				a.	Minimum 26 gauge Galvalume steel sheet, AZ50, conforming to ASTM A 792 for painted and unpainted panels.
				b.	Minimum 24 gauge Galvalume steel sheet, AZ50, conforming to ASTM A 792 for painted and unpainted panels.
			3.	Finish:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs and delete the one not required.
				a.	PVDF fluoropolymer, 1 mil, 2 coat, 70 percent.
				b.	Siliconized polyester thermoset coating, 0.90 mil minimum dry film thickness.
				c.	Color as selected by Architect from manufacturer's standard color range, 20 colors minimum.
				d.	Coat reverse side with off-white primer coat.
			4.	Panel Fasteners: No. 14 self-tapping sheet metal screw. Color coat heads to match panel color.
			5.	Panel Trim: Same material and finish as panel. Configuration as shown on Drawings
		O.	Panel: Panel No. ________ as manufactured by ____________________.
			1.	Base Metal: ____________________.
			2.	Finish: ______________________.
			3.	Panel Fasteners: ______________________.
			4.	Panel Trim: ______________________.
	2.3	FABRICATION
		A.	Fit and shop assemble items in largest practical sections, for delivery to site.
		B.	Fabricate items with joints tightly fitted and secured.
		C.	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.
		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.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Examine area where work will be installed to verify the installation can be performed in accordance with the Drawings and structural calculation requirements without interference from other equipment or trades.
		B.	Do not begin installation until conditions have been properly prepared.
		C.	If preparation is the responsibility of another installer, notify Architect 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.
		B.	Install components plumb and level, accurately fitted, free from distortion or defects.
		C.	Provide for erection loads, and for sufficient temporary bracing to maintain indicated alignment until completion of erection and installation of permanent attachments.
		D.	Anchor fabrications to structure as indicated.
		E.	Separate dissimilar metals and use gasketed fasteners, isolation shim, or isolation tape to eliminate possibility of corrosive or electrolytic action between metals.
		F.	Exercise care when installing components so as not to damage finish surfaces. Touch up as required to repair damaged finishes.
		G.	Install flashing boots at base supports as required to provide a watertight connection. Install as recommended by the manufacturer.
		H.	Remove all protective masking from material immediately after installation.
	3.4	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION