SECTION 07631

GUTTERS AND DOWNSPOUTS

PART	GENERAL

SECTION INCLUDES

[[Precoated] Galvanized steel] [Aluminum] [Stainless steel] [Copper] [Terne coated] [Lead coated copper] [PVC] gutters and downspouts.

[Precast concrete splash pads.] [Sheet metal splash pads.]

RELATED SECTIONS

[Section [______-____________]: Precast concrete splash pads at downspout outlets.]

Section [______-____________]: Sloped roofing system.

Section 07611 - Custom Sheet Metal Roofing.

Section 07620 - Sheet Metal Flashing and Trim.

Section 09900 - Painting: Field painting of metal surfaces.

Section [______-____________]: [Steel] [Cast iron] [Plastic] pipe [shoes] [boots] [________], with connection to downspout at [____] inches ([____] mm) above grade.

Section [______-____________]: Connection of downspouts to [storm sewer.] [________.]

Section [______-____________]: Electric heating cable.

REFERENCES

ASTM A167 - Stainless and Heat-Resisting, Chromium-Nickel Steel Plate.

ASTM A446 - Steel Sheet, Zinc Coated, (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality.

ASTM B32 - Solder Metal.

ASTM B209 - Aluminum and Aluminum Alloy Sheet and Plate.

ASTM B370 - Copper Sheet and Strip for Building Construction.

ASTM B486 - Paste Solder.

FS O-F-506 - Flux, Soldering, Paste and Liquid.

FS TT-C-494 - Coating Compound, Bituminous, Solvent Type, Acid Resistant.

SMACNA - Architectural Sheet Metal Manual.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate locations, configurations, jointing methods, fastening methods, locations, and installation details.

Product Data: Provide data on prefabricated components.

Samples: Submit [two] [_______] samples, [____] inch ([____] mm) long illustrating component design, finish, color, and configuration.

QUALITY ASSURANCE

Conform to [SMACNA Manual] [________] for sizing components for rainfall intensity determined by a storm occurrence of [1 in 5 years.] [1 in 10 years.] [________.]

Maintain [one copy] [[____] copies] of [each] document on site.

REGULATORY REQUIREMENTS

Conform to [applicable] [___________] code for size and method of rain water discharge.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Stack preformed [and prefinished] material to prevent twisting, bending, or abrasion, and to provide ventilation. Slope to drain.

Prevent contact with materials during storage which may cause discoloration, staining, or damage.

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the work with downspout discharge pipe inlet.

PART	PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

MATERIALS

Pre-Coated Galvanized Steel: ASTM A446, Grade A, [G90] [____] zinc coating; [____] gage ([____] mm) core steel, shop pre-coated with [modified silicone] [________] coating of [________] color [as selected.] [to match [________.]

****** [OR] ******

Galvanized Steel: ASTM A361, [G90] [____] zinc coating; [24] [26] [____] gage ([0.6] [0.5] [____] mm) core steel.

****** [OR] ******

Aluminum Sheet: ASTM B209, [____] alloy, [____] temper; [____] inch ([____] mm) thick; [mill] [plain] [stucco embossed] finish [, shop pre-coated with [________] coating of [________] color [as selected] [to match [________] finish].

****** [OR] ******

Stainless Steel: ASTM A167, Type [304] [____], soft temper, [____] inch ([____] mm) thick; [smooth] [[________] patterned] [4D] [________] finish.

****** [OR] ******

Copper: ASTM B370, cold rolled [[20] [24] [____] oz/sq ft] [[0.027] [0.032] [____] inch ([0.7] [0.8] [____] mm) thick]; [natural] [lacquered] finish.

****** [OR] ******

Polyvinyl Chloride (PVC): Virgin vinyl, [high] [normal] impact type, color fast; [________] color [as selected].

COMPONENTS

Gutters: SMACNA [Rectangular] [Square] [Semi-circular] style profile.

Downspouts: SMACNA [Rectangular] [Square] [Round] [________] profile.

Accessories: Profiled to suit gutters and downspouts.

Splash Pans: Same metal type as downspouts, formed to [____x____] inches ([____x____] mm) size; rolled sides [____] inch ([____] mm) high for inverted pan placement.

[Splash Pads or Blocks: Precast concrete type, of [size] [sizes] and profiles indicated; minimum 3000 psi (21 Mpa) at 28 days, with minimum 5 percent air entrainment.]

[Downspout [Boots] [Shoes]: [________].]

ACCESSORIES

Anchorage Devices: [SMACNA requirements.] [Type recommended by fabricator.]

Gutter Supports: [Brackets.] [Straps.] [Spikes and ferrules.]

Downspout Supports: [Brackets.] [Straps.]

Fasteners: [Galvanized steel] [Aluminum] [Stainless steel] [Copper] [, with soft neoprene washers]. [Finish exposed fasteners same as flashing metal.]

Primer: [Zinc chromate] [Galvanized iron] [Iron oxide linseed oil] [________] type.

Protective Backing Paint: [Zinc chromate alkyd] [Iron oxide linseed oil paint].

****** [OR] ******

Protective Back Coating: [FS TT-C-494, bituminous] [________________].

Solder: ASTM B32; [50/50] [____] type.

****** [OR] ******

Paste Solder: ASTM B486; [____] type.

Flux: [FS O-F-506.] [________.]

FABRICATION

Form gutters and downspouts of profiles and [size] [sizes] [indicated] [, to SMACNA requirements].

Fabricate with required connection pieces.

Form sections square, true, and accurate in size, in maximum possible lengths, free of distortion or defects detrimental to appearance or performance. [Allow for expansion at joints.]

Hem exposed edges of metal.

Pretin edges of [copper] [________] sheet. Solder shop formed metal joints. After soldering, remove flux. Wipe and wash solder joints clean. Weather seal joints.

Fabricate gutter and downspout accessories; [solder] [seal] watertight.

FINISHES

[Prepare [copper] [________] surfaces in accordance with Section [09900] [________].]

Back paint concealed metal surfaces with protective backing paint to a minimum dry film thickness of [15] [____] mil ([0.4] [____] mm).

****** [OR] ******

Apply bituminous protective backing on surfaces in contact with dissimilar materials.

PART	EXECUTION

EXAMINATION

Verify that [surfaces] [________] are ready to receive work.

INSTALLATION

Install gutters, downspouts, and accessories [in accordance with manufacturer's instructions].

Join lengths with [formed] seams [sealed] [soldered] watertight. Flash and [seal] [solder] gutters to downspouts and accessories.

Slope gutters [____] inch per foot ([____] mm/m) minimum.

Seal metal joints watertight.

****** [OR] ******

Solder metal joints for full metal surface contact. After soldering, wash metal clean with neutralizing solution and rinse with water.

Connect downspouts to [downspout boots] [downspout shoes] [storm sewer] [________] system. [Grout] [Seal] connection watertight.

Set splash [pans] [pads] [blocks] under downspouts. [Secure in place with [________]].

END OF SECTION