077123__GUTTERS_AND_DOWNSPOUTS.pdf

VTS MILAN I-2 RESTORATION ARNG # 47110023

LAVINIA, TENNESSEE TENNESSEE ARMY NATIONAL GUARD

Hart Freeland Roberts, Inc. 077123 - 1

MANUFACTURED GUTTERS AND DOWNSPOUTS

SECTION 077123

MANUFACTURED GUTTERS AND DOWNSPOUTS

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Hanging gutters and downspouts and related fabricated sheet metal items.

1.2 ACTION SUBMITTALS

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

1.3 QUALITY ASSURANCE

A. Conform to SMACNA Manual for sizing components for rainfall intensity decided by a storm occurrence of 1 in 10 years.

B. Maintain one copy of document on site.

1.4 DELIVERY, STORAGE AND HANDLING

A. Deliver, store and handle products .

B. Stack preformed and prefinished material to prevent twisting, bending, or abrasion and to aid ventilation. Slope to drain.

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

PART 2 PRODUCTS

2.1 MATERIALS

A. Pre-Finished Aluminum Sheet: ASTM B209, shop pre-coated with 2-coat 70 percent fluoropolymer, "Kynar 500" or "Hylar 5000" resin, meeting AAMA 605.2 coating; color as selected by Contracting Officer from manufacturer's premium range; thickness as indicated in “Fabrication” article below.

2.2 COMPONENTS

A. Downspouts: SMACNA Rectangular corrugated profile.

B. Splash Blocks: Precast concrete type, 11 inches wide by 30 inches long minimum, fluted design;

pea gravel finish; minimum 3000 psi at 28 days, with minimum 5 percent air entrainment.

RANGE OPERATION AND STORAGE BUILDING

Tennessee Army National Guard Volunteer Training Site - Catoosa

TNARNG PN 47110012

Hart Freeland Roberts, Inc. 077123 - 2

MANUFACTURED GUTTERS AND DOWNSPOUTS

2.3 ACCESSORIES

A. Anchorage Devices: SMACNA requirements.

B. Hanging Gutter Supports: Brackets of same material as gutter and sized per SMACNA requirements.

C. Downspout Supports: Straps of same material as downspout and sized per SMACNA requirements; 1 inch minimum width by two gages heavier than downspout. Use fasteners with minimal penetration length.

D. Fasteners: Aluminum. Finish exposed fasteners same as flashing metal.

E. Sealer: Type as specified in Section 079000 or as is standard with gutter and downspout manufacturer.

2.4 FABRICATION

A. Hanging Gutters: Fabricate to cross section indicated, complete with end pieces, outlet tubes, and other accessories as required. Fabricate in minimum 96-inch-long sections. Furnish flat-stock gutter spacers and gutter brackets fabricated from same metal as gutters, of size recommended by SMACNA but not less than twice the gutter thickness. Fabricate lap-type expansion joints, and gutter accessories from same metal as gutters.

B. Form gutters and downspouts of profiles and sizes indicated, according to SMACNA requirements and to the follow thickness(es).

Girth Minimum Gage Up to 15” 0.032" painted alum.

16 - 20" 0.040" alum.

C. Fabricate with required connection plates.

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

E. Form downspouts of constant size throughout their length.

F. Hem exposed edges of metal.

G. Fabricate gutter and downspout accessories; seal watertight.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify that surfaces are ready to receive work.

B. Beginning of installation means acceptance of existing conditions.

RANGE OPERATION AND STORAGE BUILDING

Tennessee Army National Guard Volunteer Training Site - Catoosa

TNARNG PN 47110012

Hart Freeland Roberts, Inc. 077123 - 3

MANUFACTURED GUTTERS AND DOWNSPOUTS

3.2 INSTALLATION

A. Install gutters, downspouts and accessories according to SMACNA requirements. Spike and ferrules will not be permitted.

B. Locate expansion joints midway between downspouts, 50 feet on center maximum according to SMACNA requirements.

C. Join lengths with seams sealed watertight. Lap joints, except for expansion joints, one inch in direction of flow and rivet on two inch centers. Flash and seal gutters to downspouts and accessories.

D. Slope gutters 1/16 inch per foot minimum. Where it is necessary to vary downspout system from the vertical, pitch downspouts.

E. Seal metal joints watertight.

END OF SECTION