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THE SPECIFICATION SECTION IN THE CONTRACT

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O U T L I N E   G U I D E

DIVISION 7:  THERMAL AND MOISTURE PROTECTION

SECTION 07631 ‑ GUTTERS AND DOWNSPOUTS

USE:	Furnishing and installing sheet metal gutters and downspouts for controlled drainage of building roofs.  Unique job requirements may require specific coverage in the following specification sections:

NOTES TO SPECIFIER:

A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [      ] provide for information to be inserted, as appropriate to individual projects.

B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately).

D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name Of The Project (upper/lower case).  Replace date with current MM/YY (WITHOUT BRACKETS). 

E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specifications that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST-110 or call (303) 987-6851.

F.	DESIGN NOTES:

1.	DRAWING DATA REQUIRED:

REVISIONS OF THIS SECTION:
CSI format, editorial changes 8/00
Metric: Not Applicable
Technical Update: 8/00

SECTION 07631

GUTTERS AND DOWNSPOUTS

PART 1:  GENERAL

1.1	SUMMARY

A.	Section Includes:  Furnishing and installing gutters and downspouts.  

B.	Related Sections:

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LIST ITEMS OF WORK THAT MIGHT LOGICALLY BE FURNISHED AND INSTALLED UNDER THIS SECTION, BUT INSTEAD ARE SPECIFIED IN ANOTHER SECTION.  THIS ARTICLE IS RARELY REQUIRED.
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1.2	SUBMITTALS

A.	General:  Submittals shall be according to [Section 01009 - General Information and Requirements.] [and] [Section 01330 - Submittal Procedures] [and][Section 01331 - Certificates.]

B.	Manufacturer's Literature:  Submit [__] copies of the manufacturer's descriptive data for gutters and downspouts to be used on this project.

C.	Shop Drawings:  Submit [     ] copies of shop [and erection] drawings for the gutters and downspouts to be used on this project.  Shop drawings shall indicate the complete layout with dimensions, gauge of material, connections, fastening methods, and other details as necessary to present a complete drainage system.

1.3	QUALITY ASSURANCE

A.	Failure Criteria:  Not limited to the following:
1.	Chipping or flaking of paint finish.
2.	Rusting.
3.	Joint leaking
4.	Metal pulling loose from subsurface attachment.

1.4	DELIVERY, STORAGE, AND HANDLING

A.	Storage:  Crated materials shall not be uncrated until ready for use.  Store materials in dry, weather‑tight, ventilated areas until immediately before installation.

PART 2:  PRODUCTS

2.1	MATERIALS

A.	Zinc‑Coated (Galvanized) Sheet and Strip:  Shall be according to ASTM A 525.  Twenty‑four gauge minimum material, factory‑marked to permit identification.  Maximum available lengths.  Single pieces less than 8 feet long may be used to connect to factory‑fabricated corners, and at ends of runs.

B.	Fasteners:  As appropriate to the mounting conditions required, and as approved.

C.	Solder:  Shall be according to ASTM B 486.

D.	Flux:  Consistent with solder, acid type.

2.2	FABRICATION

A.	Requirements:  Shall be according to SMACNA Manual.

PART 3:  EXECUTION

3.1	INSTALLATION

A.	Gutters:  The hung type of shape indicated and supported by brackets maximum 48 inches oc that permit free thermal movement of the gutter.  Provide gutters in sizes indicated, complete with mitered corners, end caps, outlets, brackets and other accessories necessary for installation.  Gutters shall be fabricated of 24-ga zinc‑coated steel. The outer edge of gutter shall be beaded or reinforced with a stiffening bar not less than 3/4 x 3/16 inch of material compatible with gutter.  The sections shall be lapped a minimum of 1‑1/2 inches in the direction of flow.  Gutters shall be joined by riveted and soldered joints.  Expansion‑type slip joints shall be provided midway between outlets.  Install gutters below slope line of the roof so that snow and ice can slide clear.  Gutters shall be adjusted to slope uniformly to outlets, minimum pitch 1/8 inch per foot with high points occurring midway between outlets.  Hangers and fastenings shall be fabricated from metals compatible with the gutters.

B.	Downspouts:  The corrugated type of the shapes and sizes indicated, and provided complete, including elbows and offsets.  Downspouts shall be provided in maximum lengths; end joints shall telescope not less than 1/2 inch, and longitudinal joints shall be locked.  Gutter outlets shall be provided with wire ball strainers of a standard type for each outlet.  Strainers shall fit tightly into outlets and shall be of the same material used for gutters.  Downspouts shall be kept not less than one inch away from walls and shall be fastened to the walls at top, bottom, and at not to exceed 5 foot centers intermediately between, with approved type leader straps or concealed rack‑and‑pin type fasteners; straps and fasteners shall be formed from metal compatible with the downspouts.  Downspouts terminating in drainage lines shall be neatly fitted into the drainage connection and the joint filled with a portland cement mortar cap sloped away from the downspout.  Downspouts terminating at splash blocks shall be provided with elbow‑type fittings.  Splash blocks 12 x 36 inches shall be concrete.

C.	Painting:  See Section 09915 ‑ Exterior and Interior Painting, for required coatings, and Section 09999 ‑ Color Schedule.

PART 4:  MEASUREMENT AND PAYMENT

4.1	METHOD OF MEASUREMENT

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WHEN A “LUMP SUM” CONTRACT IS USED, DELETE THE TITLE PART 4:  MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.  MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 - GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010- SUMMARY OF WORK.  WHEN NOT A “LUMP SUM” CONTRACT, SELECT APPLICABLE PHRASES; USE THE “NO MEASUREMENT” PHRASE WHEN NONE OF THE PAY ITEMS IN THS SECTION ARE INCLUDED IN THE BID SCHEDULE.
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A.	Units: The work described in this section will [not be measured for payment]. [be measured for and paid for] [on a lump-sum basis].

4.2	BASIS OF PAYMENT

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WHEN NOT A “LUMP SUM” CONTRACT, SELECT APPLICABLE, SELECT APPLICABLE PHRASES; USE THE “NO DIRECT PAYMENT” PHRASE WHEN NONE OF THE PAY ITEMS IN THE SPECIFICATION ARE INCLUDED IN THE BID SCHEDULE.

WHEN NOT A “LUMP SUM” CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS SECTION, SELECT APPLICABLE PAY ITEMS.  DO NOT CHANGE PAY ITEM NUMBER.  WHEN MORE THAN ONE DIAMETER OR GAUGE IS SPECIFIED FOR ANY PAY ITEM, LETTER SUFFIXES WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.  WHEN GOVERNMENT-FURNISHED PROPERTY IS SPECIFIED FOR PAY ITEMS, THE LETTER SUFFIX GF WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.
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A.	Payment: [No direct payment for the work described under this section will be made.  Consideration for this item shall be included in the bid price for other items of the Contract]. [Prices and payment will be full compensation for the work described in this section.  Payment will be made under:]

Pay Item	Pay Unit

07631(01)	Gutters and Downspouts	Lump Sum

END OF SECTION