1. GENERAL

A. American Wood-Preservers' Association (AWPA):

Standard C1, All Timber Products - Preservative Treatment by Pressure Process.

Standard C2, Lumber, Timbers, Bridge Ties and Mine Ties.

Standard C3, Piles.

Standard C9, Plywood.

Standard C14, Wood for Highway Construction.

Standard C15, Wood for Commercial - Residential Construction.

Standard C18, Marine Construction.

Standard C22, Lumber and Plywood for Permanent Wood Foundations.

Standard C23, Round Poles and Posts Used in Building Construction.

Standard P5, Waterborne Preservatives.

Standard E13, Standard Method of Testing to Determine Water Repellents in Pressure Treated Lumber.

Standard M4, Care of Preservative-Treated Wood Products.

B. National Institute of Standards and Technology (NIST):

PS 1, U.S. Product Standard for Construction and Industrial Plywood.

PS 20, American Softwood Lumber Standard.

C. Western Wood Preservers Institute

Best Management Practices for the Use of Treated Wood in Aquatic Environments.

QUALITY ASSURANCE

A. Qualifications:

Treatment Facility: Provide treated materials that have been produced under an ALSC recognized quality assurance program.

DELIVERY, STORAGE, AND HANDLING
If drying after treatment is selected in part 2, retain the two paragraphs below.

A. Packing and Shipping:

Provide waterproof covers for preservative treated wood during shipment.

B. Storage and Protection:

Store preservative treated wood off the ground and protected from the weather.

2. PRODUCTS

MANUFACTURERS TYPE

A. Preservative: CCA Type C;

Retain below if water repellent is required.

B. Water Repellent: Repellent Treated

MATERIALS

Lumber for preservative treatment must conform to the following specifications. Select grade and species below. Other grades and species may be acceptable, contact your lumber supplier to verify.

A. Lumber: In accordance with NIST PS 20 and as follows:

1. Grade: No. 1

1. Grade: No. 2

1. Grade: No. 1 Dense.

1. Grade: No. 2 Dense.

1. Grade: Select Structural.

1. Grade: Standard.

2. Grade: Premium.

2. Species: Southern pine.

2. Species: Red pine.

2. Species: Ponderosa pine.

2. Species: Hem-fir.

3. Surfacing: S4S.

3. Surfacing: S1S2E.

3. Surfacing: Rough.

4. Moisture Content: 19%, maximum.

Plywood for preservative treatment must conform to the following specifications. Select panel grade, exposure durability, species group, and structural rating from below.

B. Plywood: In accordance with NIST PS 1 and as follows:

1. Panel Grade: A-C.

1. Panel Grade: B-C.

1. Panel Grade: C-C.

1. Panel Grade: C-D.

2. Exposure Durability: Exterior.

2. Exposure Durability: Exposure 1.

3. Species Group: 1.

3. Species Group: 2.

4. APA Structural Rating: Structural I.

4. APA Structural Rating: Structural II.

C. Preservative: CCA Type C in accordance with AWPA P5 and formulated using only the oxide form of the chemicals.

PRESERVATIVE TREATMENT

Select required end uses below.

A. Pressure Treatment: In accordance with the requirements of AWPA Standard C1 and in accordance with the following standards for indicated end uses:

Lumber: C2.

Piling: C3.

Plywood: C9.

Highway Construction: C14.

Permanent Wood Foundations: C22.

Building Poles and Posts: C23.

Select required applications below.

B. Preservative Retention: In accordance with the specified standard, determined in the specified zone, and as follows:

Above Ground: 0.25 pcf, minimum.

Ground or Fresh Water Contact: 0.40 pcf, minimum.

Wood Foundation or Structural Poles: 0.60 pcf, minimum.

Salt Water Immersion: 2.50 pcf, minimum.

C. Moisture Content: Drying after treatment is not required.

Select Above or Below.

D. Moisture Content: Dry after treatment as follows:

Lumber: 19%, maximum.

Plywood: 18%, maximum.

Plywood: 15%, maximum (for Permanent Wood Foundation).

Retain below if fixed preservative is required for aquatic environments.

E. Pressure Treatment of Materials for Aquatic Environments: In accordance with the Best Management Practices published by the Western Wood Preservers Institute.

Retain below if water repellent is required.

WATER REPELLENT TREATMENT

A. Apply by pressure process to conform with AWPA Standard E13.

SOURCE QUALITY CONTROL

Inspection:

Untreated Material:

Lumber: Provide lumber that has been inspected and graded for treatment by an ALSC recognized grading agency.

Plywood: Provide plywood that has been inspected and graded before treatment by a code-recognized inspection and testing agency.

Treated Material: Provide treated material that bears the Wolmanized trademark and the quality mark of an ALSC-recognized agency which maintains supervision, testing, and inspection of the quality of the product. Provide quality marks that are affixed to each piece and that include the following:

Identification of the inspection agency.

Identification of the standard to which the material was treated.

Identification of the treating facility.

Identification of the preservative and retention.

Identification of the end use for which the product is suitable.

3. EXECUTION

INSTALLATION

Below is not generally required for U.S. eastern and central pine species less than 5 inches thick. No other special installation specifications are required for preservative treated wood.

A. Surface Treatment of Field Cuts: Treat field cuts on members that provide structural support to a permanent structure in accordance with AWPA Standard M4.