A06_Specifications.pdf

MT-06312-1

Specifications

PART 1: GENERAL

1.1 SUMMARY:

A. Section Includes: Acceptability and application of preservative-treated wood posts, poles, rails, fence stays, and jackleg sets.

1.2 REFERENCES:

A. American Wood Protection Association:

AWPA U 1-05 User Specification for Treated Wood AWPA U 10-90 Lodgepole Pine Poles - Preservative Treatment by the Full-Length

Thermal Process AWPA T 1-05 Processing and Pressure Treatment Standard AWPA M 4-05 Standard for the Care of Preservative-Treated Wood Products AWPA P 5-05 Standard for Waterborne Preservatives AWPA P 8-05 Oil-Borne Preservatives AWPA P 9-03 Solvents and Formulations for Organic Preservative Systems

1.3 DEFINITIONS:

A. Posts: Posts, rails, and stays are classified as to size on the basis of small end diameter, and total length.

1.4 SUBMITTALS:

A. Certificates of Conformance: Submit 1 copy of written certification of the items to be supplied, that they conform to the requirements of this specification section. Included shall be certification of species and origin of wood, along with name and address of treatment plant. Submit written certification from the treating plant stating that chemicals and methods used for wood preservation and net amount of preservative retained are in conformance with applicable standards. This certification will be required before any acceptance of wood products.

1.5 QUALITY ASSURANCE:

A. Fabricator's Qualifications: A person required to apply preservatives must have completed an Environmental Protection Agency approved training course.

1.6 DELIVERY, STORAGE, AND HANDLING:

A. Storage: Stack treated material separately from untreated material. Support material

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above the ground and cover to protect against moisture. Allow air to circulate between members.

B. Handling: Treated materials shall be handled to preserve the integrity of the treatment, according to AWPA M 4. Scrapes, punctures or abrasions caused during this operation shall be treated with an approved preservative. Poles are not acceptable when they contain indentations attributed to loading or handling slings that are 1/4-inch or more deep over 20% or more of the pole circumference, or more than 1/2-inch deep at any point. Poles shall not be dragged along the ground. Can’t hooks, pole tongs, or other pointed tools shall not be applied to the ground line section of the poles.

C. Delivery: All material is delivered to the Dillon Field Office, Bureau of Land

Management, 1005 Selway Drive, Dillon, Montana. Operating hours are 8 a.m. to 4:30 p.m. Monday-Friday

PART 2: PRODUCTS

2.1 MATERIALS:

A. General: Material shall be sound, free of decay and end splits. Seasoning checks will be permitted when not extending through the pith.

1. Wood Posts: Wood posts shall be round, 7 feet long, with a 5–6-inch minimum diameter and be sound single-stem members of round cross section. Posts shall be pointed and capped. Posts shall be free of multiple crooks. Posts are not acceptable when a line drawn from the geometric center of the top to the center of the butt falls outside of the body of the post, or a point more than 1½ inches from the center of the post. Posts are not acceptable when charred. Only one check extending to the pitch is allowable. Only the following species are acceptable when preservative-treated for the full length: Ponderosa pine, lodgepole pine, and Douglas-fir. Only these species grown east of the Cascade Mountain Range will be accepted.

2. Wood Gate Stay: Wood Stays shall be 4 feet long with 2-3 inches minimum diameter. Wood stays shall be sound single-stem members of round cross section.

A slight bend in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment. Stays are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Stays that are twisted, rotted, excessively bent, or have a check extending into the pith or more than one check are not acceptable. Stays that are charred are not acceptable.

3. Split Wood Rails: Split wood rails shall be 12’6” long with a 4 ½ inch minimum diameter and be sound single-stem members of round cross section. A slight bend

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in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment.

Rails are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Rails that are twisted, rotted, excessively bent, or have a check extending into the pith or more than one check are not acceptable. Rails that are charred are not acceptable.

4. Wood Brace Rails: Wood brace rails shall be 8 feet long (cut in the field) with a 4–

5-inch minimum diameter. Wood brace rails shall be sound single-stem members of round cross section. A slight bend in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment. Posts are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Posts that are twisted, rotted, excessively bent, or have a check extending into the pith or more than one check are not acceptable. Posts that are charred are not acceptable.

5. Jackleg (Dado Through Joint): Jack leg shall be 5’6” long. Wood posts shall be sound single-stem members of round cross section. A slight bend in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment. Posts are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Posts that are twisted, rotted, excessively bent, or have a check extending into the pit or more than one check are not acceptable. Posts that are charred are not acceptable.

6. Round Wood Rails: Round wood rails shall be 12.5 feet long with a 3-4 inch minimum diameter and be sound single-stem members. A slight bend in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment. Rails are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Rails that are twisted, rotted, excessively bent, or have a check extending into the pith or more than one check are not acceptable. Rails that are charred are not acceptable.

7. Wood Posts: Wood posts shall be round, 8 feet long, with a 6–7-inch minimum diameter and be sound single-stem members of round cross section. Posts shall be pointed and capped. Posts shall be free of multiple crooks. Posts are not acceptable when a line drawn from the geometric center of the top to the center of the butt falls outside of the body of the post, or a point more than 1½ inches from the center of the post. Posts are not acceptable when charred. Only one check extending to the pitch is allowable. Only the following species are acceptable when

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preservative-treated for the full length: Ponderosa pine, lodgepole pine, and Douglas-fir. Only these species grown east of the Cascade Mountain Range will be accepted.

8. Split Wood Rails: Split wood rails shall be 16’6” long with a 4 ½ inch minimum diameter and be sound single-stem members of round cross section. A slight bend in one plane is acceptable. Honey Locust, western red cedar (full stem with bark removed), juniper, osage orange, and white oak are acceptable without treatment.

Rails are not acceptable when sweep causes a straight line joining the center of the top to the center of the butt to fall outside the body of the post, or at a point 2 inches or more from the center of the post. Rails that are twisted, rotted, excessively bent, or have a check extending into the pith or more than one check are not acceptable. Rails that are charred are not acceptable.

2.2 WOOD TREATMENT PRACTICES FOR POSTS:

A. General: Minimum net retention and penetration shall be according to AWPA T 1.

Treatment method shall be according to AWPA U 1.

B. Pentachlorophenol: Five percent penta solution (conforming to AWPA P 8) in petroleum (according to Type A in AWPA P 9.)

C. Ammoniacal Copper Arsenate (ACA): Waterborne preservative according to AWPA P 5.

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D. Ammoniacal Copper Zinc Arsenate (ACZA): Waterborne preservative according to

AWPA P 5.

E. Chromated Copper Arsenate (CCA): Waterborne preservative according to AWPA P 5

Type A, B, or C.

F. Thermal Process: Lodgepole pine only. The full-length thermal process according to

AWPA U 10 (although AWPA U 10 refers to poles, this standard is acceptable for treatment of lodgepole pine posts, except that penetration and retention shall conform to

AWPA U 5).

PART 3: EXECUTION

(There are no applicable requirements.)

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: Posts, Poles, Rails, and Stays will be measured and paid for by the individual unit price; Jacklegs will be measured and paid for by the set (a pair of jack leg posts make up a “set”).

4.2 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the product described in this section. Payment will be made under the unit price as stated in the bid schedule.

Pay Item Unit

MT-06312 (1) Wood Post, 7’ Pointed/Capped, 5”-6” dia…………. each

MT-06312 (2) Wood Gate Stay, 4’, 2”-3” dia……………………… each

MT-06312 (3) Wood Rail, 12.5’ Split, 4-1/2” min. dia……………. each

MT-06312 (4) Wood Brace Rail, 8’, 4”-5” dia……………………... each

MT-06312 (5) 5’6” Jackleg (Dado)……………………………. Set

MT-06312(6) Wood Rail Round 12.5’ 3’’-4’’ Dia. each

MT-06312(7) Wood Post 8’ Pointed Capped 6-7” dia’ each

MT-06312(8) Wood Rail, 16’6’’ Split 4.5” min. dia. each

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END OF SECTION