1、 INCH-POUND MM-L-736D 6 MAY 2008 SUPERSEDING MM-L-736C March 9, 1973 FEDERAL SPECIFICATION LUMBER; HARDWOOD The General Services Administration has authorized the use of this federal specification by all federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers commercial sp
2、ecies and grades of hardwood lumber commercially harvested and manufactured in the continental United States. 1.2 Classification. Hardwood lumber shall be of the following types, as specified (see 6.2): Type I - Standard hardwood cutting grades Type II - Hardwood construction lumber including boards
3、, dimension, and timbers Type III - Hardwood flooring 2. APPLICABLE DOCUMENTS 2.1 Government publications. The issues of the following documents, in effect on the date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. Military Specifica
4、tions MIL-L-14362 Lumber: Unitizing and loading of MIL-L-19140 Lumber and Plywood, Fire-Retardant treated (Copies of these documents are available online at http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Commen
5、ts, suggestions, or questions on this document should be addressed to: Defense Supply Center Philadelphia, ATTN: DSCP-NASA, 700 Robbins Ave., Philadelphia, PA 19111-5096 or email to dscpg however, such trimming shall permit trimming to nominal length. 3.3 Unless otherwise specified (see 6.2), the de
6、gree of seasoning shall conform to the following requirements. Lumber not required to be seasoned shall be designated, “Any stage of seasoning”. Moisture content of lumber shall be determined as specified in 4.3.4. 3.3.1 Type I and NHLA “A” and “B” finish grades of type II lumber. No piece of lumber
7、 8/4 inches or less in thickness shall have a moisture content exceeding 12 percent. The moisture content of limber over 8/4 inches in thickness shall be specified (see 6.2). The lumber shall be graded and measured under NHLA “Standard Kiln Dried Rule” with inspection after surfacing when surfacing
8、is required (see 3.5). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MM-L-736D 43.3.2 Type II lumber, excluding “A” and “B” finish grades. Unless otherwise specified (see 6.2), lumber shall conform to the following average moisture content requirem
9、ents, with no piece to exceed the average moisture content by more than 3 percent. THICKNESS AVERAGE MOISTURE CONTENT 4/4” and thinner 19 percent or less 5/4” 22 percent or less 6/4” 24 percent or less 7/4” and 8/4” 27 percent or less Over 8/4” As specified (see 6.2) When lumber intended for use as
10、framing members is specified (see 6.2) the moisture content shall not exceed 19 percent. 3.3.3 Type III. The moisture content of hardwood flooring shall be not more than 9 percent, except that 5 percent of any quantity submitted for delivery may have a moisture content of not more than 12 percent. 3
11、.4 End coating. When green or unseasoned lumber is specified, lumber 4 inches and thicker shall be end coated with two coats of ready-mixed paint conforming to SSPC-Paint 25 or with any suitable commercial end coating equally effective when compared with approved coating in reducing end checking and
12、 splitting. 3.5 Surfacing. Lumber shall be rough, dressed or run to pattern, as specified (see 6.2 and 6.4). 3.6 Treatment. 3.6.1 Preservative treatment. When specified (see 6.2), lumber shall be preservative treated and the preservative to be used shall conform to the following specifications: AWPA
13、 P1/P13, AWPA P2, AWPA P3, AWPA P5, AWPA P8, or AWPA P9. 3.6.2 Fire retardant treatment. When specified (see 6.2), lumber shall be fire retardant treated in accordance with MIL-L-19140. 3.6.3 Anti-strain treatment. When specified (see 6.2), all hard-wood lumber which is subject to staining (see 6.5)
14、 shall be anti-stain treated. The treating solution shall be waterbased with the composition, concentration and application as specified by the chemical supplier. 3.7 Grade certification. Hardwood lumber of like grade, size and species shall be certified for grade by a certificate of inspection. Unl
15、ess otherwise specified (see 6.2), certificates for type I and II lumber shall be issued by a National Inspector of the National Hardwood Lumber Association and certificates for type III lumber shall be issued by the supplier. 3.8 Marking. Unless otherwise specified (see 6.2), each piece of type I a
16、nd II lumber, graded and certified as specified in 3.7, shall be hammer branded by a National Inspector of the National Hardwood Lumber Association. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MM-L-736D 54. QUALITY ASSURANCE PROVISIONS 4.1 Respon
17、sibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suit
18、able for the performance of the inspection requirements specified herein, unless disapproved by the Government. The government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform
19、to prescribed requirements. 4.2 Classification of inspection. Inspection shall be classified as follows: (a) Quality conformance inspection (see 4.3). (b) Inspection of preparation for delivery (see 4.4). 4.3 Quality conformance inspection. 4.3.1 Sampling. 4.3.1.1 Unit of product. For the purpose of
20、 quality conformance inspection, each piece of lumber shall constitute a unit of product. 4.3.1.2 Lot. For the purpose of quality conformance inspection, a lot shall consist of all pieces of the same material and manufacturing classification offered for delivery at one time. 4.3.2 Samples for examin
21、ation and tests. Samples for examination and tests shall be selected in accordance with ASQ Z1.4. The Acceptable Quality limits (AQLs)shall be 4.0 percent defective. Unless otherwise specified, AQLs listed in this section shall be used to establish the sample size, however, the acceptance number sha
22、ll be zero. 4.3.3 Examination. Samples selected in accordance with 4.3.2 shall be examined for the following defects: 101. Species not as specified. 102. Size (thickness, width and length) not as specified. 103. Grade not as specified. 104. No certificate of inspection or label of certification. 105
23、. Seasoning not as specified. 106. Surfacing or pattern not as specified. 107. Preservative treatment not as specified (when required). 108. Fire retardant treatment not as specified (when required). 109. Anti-stain treatment not as specified (when required). 110. Pieces not hammer branded as specif
24、ied. 4.3.4 Tests. Samples selected in accordance with 4.3.2, from lots of seasoned lumber only, shall be tested for moisture content in accordance with ASTM D4444. 4.4 Inspection of preparation for delivery. Inspection of unitizing, marking and loading shall be in Provided by IHSNot for ResaleNo rep
25、roduction or networking permitted without license from IHS-,-,-MM-L-736D 6accordance with MIL-L-14362. 5. PREPARATION FOR DELIVERY 5.1 Unitizing, marking and loading. Unitizing, marking and loading shall be in accordance with MIL-L-14362, as specified (see 6.2). 6. NOTES 6.1 Intended use. 6.1.1 Type
26、 I. Type I hardwood lumber is intended for recutting to smaller sizes for the manufacture of furniture and other fabricated products where a high quality appearance is essential. 6.1.2 Type II. Type II hardwood lumber is intended for use in construction work and related applications where the materi
27、al will be used essentially in the size as procured. 6.1.3 Type III. Type III hardwood lumber is intended to be used specifically for flooring. 6.2 Ordering data. Purchasers should select the preferred options permitted herein and include the following information in procurement documents: (a) Title
28、, number, and date of this specification. (b) Type of hardwood lumber required (see 1.2). (c) Species and grade required (see 3.1.1 and 3.1.2). (d) Size, including thickness, width and length, required (see 3.2 and 6.3). (e) Degree of seasoning required (see 3.3). (f) Moisture content required for l
29、umber 8/4 inches in thickness (see 3.3.2.1 and 3.3.2.2). (g) When moisture content of type II lumber excluding A and B finish grades other than as specified is required (see 3.3.2.2). (h) When lumber is to be used for framing (see 3.3.2.2). (i) Surfacing required (see 3.5). (j) When preservative tre
30、atment is required and service conditions (see 3.6.1). (k) When fire retardant treatment is required (see 3.6.2). (l) When anti-stain treatment is required (see 3.6.3). (m) Certification if other than as specified (see 3.7). (n) Marking if other than as specified (see 3.8) (o) Unitization level and
31、methods (see 5.1). 6.3 Thickness, width and length. In the case of type I hardwood lumber, thickness are normally in accordance with NHLA Rules (see MIL-HDBK-7 and U.S. Department of Agriculture Wood Handbook No. 72). Minimum and percentages of widths and lengths of standard cutting grades may be sp
32、ecified. If assorted widths or assorted lengths are ordered in the case of type II hardwood lumber, percentages of each width or length may be specified. See the introduction to the C5500-IL Federal Supply Catalog, Lumber, Millwork, Plywood and Veneer, for further information. Provided by IHSNot for
33、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MM-L-736D 76.4 Surfacing. Type I hardwood lumber is produced either rough or surfaced-two-sides (S2S); type I lumber therefore should not be ordered S4S. 6.5 Anti-stain treatment applicability. Under certain circumstances, s
34、uch as overseas shipments or extended periods of storage, an anti-stain treatment may be necessary for unseasoned lumber to inhibit the penetration of undesirable stains. The need for such treatment (see 3.6.3), shall be specified on the order see 6.2(l). 6.6 Subject term (key word) listing. Grades
35、Plywood Species Stain Treatment 6.7 Changes from previous issue. Asterisks (or vertical lines) are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodians: Preparing activity: Army CR4 DLA-IS Navy YD Air Force 99 (Project 5510-200
36、8-001) Review activities: Army CE Navy MC, OS, SH NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
