1、MIL-DTL-28b2D m 999990b 20b1454 Y25 m IINCH-POUND I MIL-DTL-28628D 25 November 1997 SUPERSEDING 8 July 1991 MIL-C-S8628C(YD) DETAIL SPECIFICATION CAMEL, WOOD, MARINE; SINGLE LOG CONFIGURATION, UNTREATED AND TREATED This specification is approved for use by all Departments and Agencies of the Departm
2、ent of Defense. 1. SCOPE 1.1 Scope. This specification covers single log configuration marine wood camels, treated and untreated, hereinafter referred to as log camels. 1.2 Classification. Log camels shall be of the following types and classes, as specified (see 6.2). Type I - Treated. Class 1 - Mod
3、erate borer hazard. Class 2 - Severe borer hazard. Class 3 - Dual treatment. Type II - Untreated. 2, APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this
4、 specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all Beneficial comments, recommendations, additions, deletions, clarifcations, etc. and any data which m
5、ay improve this document should be sent to: Commanding Officer (Code 15E2), Naval Construction Battalion Center, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or bv letter. AMSC NIA FSC 1
6、945 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28628D specified requirements documents cited in sections 3 and 4 of this specifcation, whether or not they are listed. 2.2 Non-Government publications. The following documents form a part o
7、f this document to the extent specfied herein. Unless otherwise specifred, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the docum
8、ents cited in the solicitation (see 6.2). ASTM ASTM A 36 - Carbon Structural Steel. ASTM A 53 ASTM A 153 ASTM D 25 - Round Timber Piles. - Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless. Zinc Coating (Hot Dip) on Iron and Steel Hardware. - (Application for copies should be addre
9、ssed the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN WELDING SOCIETY, XNC. (AWS) AWS D1.l - Structural Welding Code, Steel. (Application for copies should be addressed to the American Welding Society, Inc., 550 N.W. LeJeune Rd., Miam
10、i, FL 33126.) AMEXICAN WOOD-PRESERVERS ASSOCIATION (AWPA) AWPA C1 AWPA C3 - Piles, Pressure Treatment. - All Timber Products - Preservative Treatment by Pressuit Processes. (Application for copies should be addressed to the American Wood-Preservers Association, 3246 Fall Creek Highway, Suite 190, Gr
11、anbury, TX 76049-7979.) 2.3 Order of pnxedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been
12、 obtained. 3. REQUIREMENTS c 3.1 Description. Log camels shall consist of natural wood logs over 20 inches (508 miiiimetre (mm) in diameter at the butt. Type I log camels shall be treated as specified (see 3.7.1 and 6.2), -2 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
13、t license from IHS-,-,-MIL-DTL-28b2D E b 2b14Cb 2TB D MIL-DTL-28628D and type II shall be untreated. When specified (see 6.2 and 6.7), the logs shall be lathe turned to a uniform nominal diameter along the entire length of the log. 3.2 First article. When specified (see 6.2) a sample log camel shall
14、 be subjected to fmt article inspection in accordance with 4.2. 3.3 Materials. Materials used shall be free from defects which would adversely affect the performance or maintainability of individual components or of the overall assembly. Materials not specified herein shall be of the same quality us
15、ed for the intended purpose in commercial practice. Unless otherwise specified herein, all equipment, material, and articles incorporated in the work covered by this specification are to be new and fabricated using materials produced from recovered materials to the maximum extent possible without je
16、opardizing the intended use. The term “recovered materials” means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materiais. Unless otherwise specified, none of the above shall be interpreted to mean that
17、 the use of used or rebuilt products is allowed under this specification. 3.3.1 Wood for loe camels. Logs selected for treatment shall have sufficient sapwood thickness to ensure the required penetration and retention are achieved (see 3.6). The wood shall be sound and free from decay, red heart, or
18、 insect attack except insect damage consisting of holes 0.06-inch (1.6 mm) or less in diameter or surface scoring or channeling is permitted. Logs used for camels shall conform to ASTM D 25, except as modified by this specification. 3.3.1.1 Suecies. Treated (type I) log camels shall be of either Coa
19、stal Douglas Fir or Southern Pine. Alternative species used for untreated (type II) log camels shall retain their shape, have adequate buoyancy (see 3.3.1 S), and have fiber strength and density similar to the treated, type I camel log species. 3.3.1.2 Scars. Logs may have sound turpentine scars whi
20、ch are undamaged by insects. No scars shdl be greater than 3 feet (914 mm) in length. 3.3.1.3 Foreign material. Logs shall be free of all nails, spikes, and other metal except as specified herein. 3.3.1.4 Straightness. The distance from the center of a cross section to a straight line from center of
21、 butt to center of tip shall be not greater than 1-inch per 10 feet (25 mm per 3 048 mm) of log length. 3.3.1.5 BuoYancY. When tested as described in 4.3, the freeboard (that portion of the log above the water surface) of each log, prior to treatment, shall be no less than 20 percent of the logs dia
22、meter. 3.3.2 PA. Pipe for hawse pipes shall be not less than 4-inch (102 mm) double extra strong pipe conforming to ASTM A 53. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28628D Length (in/feet) (mm) 30(9 144mm) 3.3.3 Steel plate. Steel
23、 plate for hawse pipe flange shall conform to ASTM A 36. 63 (1 600 mm) (20 (508 mm) Dia) 47 (1 194 mm) 75 (1 905 mm) (24 (610 mm) Dia) Minimum allowable tip circumference 59 (1 499 mm) 87 (2 210) (28 (71 1 mm) Dia) 72 (1 829 mm) 3.4 u. Log camels shall be specified by length and either diameter or c
24、ircumference. Log camels of natural taper shall be specified by minimum butt circumference and lathe turned logs shall be specifki by diameter. 40 (12 192 mm) 3.4.1 Length. Log camels shall be 30,35,40, or 50 feet (9 144,lO 668,12 192, or 15 240 mm) in length as specified (see 6.2), and havea tolera
25、nce of + l-foot, - O-foot (+ 305 mm, - O mm). Special lengths, when specified (see 6.2), shall be specified in 2-foot (610 mm) multiples under 40 feet (12 192 mm) and 5-foot (1 524 mm) multiples over 40 feet (12 192 mm). Ends shall be cut square to the centerline. (15 (381 mm) Dia) 42 (1 067 mm) (19
26、 (483 mm) Dia) 54 (1 372 mm) (23 (584 mm) Dia) 67 (1 702 mm) 3.4.2 Cross section. 50 (15 240 mm) 3.4.2.1 30.40, and 5-foot (9 144.12 192. and 15 240 mm) logs. The nominal minimum butt circumference of 30,40, and 50-foot (9 144,12 192, and 15 240 mm) log camels shall be 63,75, or 87 inches (1 600,190
27、5, or 2 210 mm) as specified (see 6.2). All circumference measurements are taken under the bark. Tip circumference shall not be less than the values given in table I. (13 (330 mm) Dia) 37 (940 mm) (11 (279 mm) Dia) (17 (432 mm) Dia) 49 (1 295 mm) (15 (381 mm) Dia) (21 (533 mm) Dia) 62 (1 575 mm) (19
28、 (483 mm) Dia) TABLE I. Specified butt circumference with minimum tip circumference (diameter apuroximated). 3.4.2.2 35-foot (10 668 mm) logs. Unless otherwise specified (see 6.2), 35-foot (10 668 mm) log camels shal have a tip diameter of not less than 35 inches (889 mm). Thebutt diameter shall be
29、not more than 10 percent greater than the tip diameter. The equivalent diameter, when turned on a lathe, shall be approximately 14 inches (356 mm). 3.4.2.3 Lathe turned log camels. When lathe turned log camels are specified (see 3.1 and 6.2), the diameter of any perpendicular cross section on the lo
30、g shall not vary by more than f 1-inch (+ 25 mm) from the specified nominal diameter. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-28b28D Is 99999Ob 2063458 O70 Class 1 MIL-DTL-28628D Hazard Treatment for Treatment Moderate borer hazard
31、 (teredo and pholad tar. present, no limnoria tripunctata). Creosote or creosote cod C1 and C3 (for marine piles). 3.4.3 Roundness. The ratio of the maximum to minimum diameter at any perpendicular cross section shall be not greater than 1:2. 2 3.5 Bark removal. Severe borer hazard ACA*,CCA*,or (ter
32、edo and limnoria ACZA*. tripunctata present, no 3.5.1 Type I. Type I log camels shall be clean peeled. Clean peeled logs shall have not less than 80 percent of the inner bark, well distributed over the entire surface of the log, removed. The logs shall have no strip of inner bark larger than 1-inch
33、by 6 inches (25 mm by 152 mm) remaining. 3.5.2 TvDe JI. Type II log camels shall be either rough peeled or unpeeled as specified (see 6.2). Rough peeled logs require the complete removal of ali outer bark, while unpeeled logs require no bark removal. 3.6 Incising. Unless otherwise specified (see 6.2
34、), incising of type I log camels shall be permitted before treatment (see 3.3.1). When lathe turned logs are specified (see 3.1 and 6.2), they shali be fiill length incised to accommodate the loss of sapwood and permit the required penetration and retention of preservative treatment (see 6.8). 3.7 T
35、reatment. 3.7.1 Wood preservative treatment. Treatment for type I log camels shall be class 1,2, or 3 as specified (see 6.2) and shall be performed after holes for hawse pipes have been drilled. Preservative treatments and minimum retention for each class shall conform to the applicable requirements
36、 of the AWPA standards for treatment (see table II). TABLE II. Treatment for type I camel logs. I I AWPA Standard C1 and C3 (for marine piles). I pholads). I I 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-28b28D 9999906 2063459 TO7 9 Cl
37、ass 3 MIL-DTL-28 628D Hazard Treatment for TEatrnent Dual treatments (limoria First treatment ACA, mpunctata and pholads CCA, or ACZA. Second present). treatment creosote or creosote coal-tar. C1 and C3 (for marine piles). TABLE II. Treatment for type I camel logs - Continued. I I I I AWPA Standard
38、I *ACA, CCA, and ACZA are abbreviations for Ammoniacal Copper Arsenate chromated Copper Arsenate and Ammoniacal Copper Zinc Arsenate, respectively. 3.7.1.1 Certification. The quality mark for the class of log camel shall be applied to each treated log in accordance with an American Lumber Standards
39、Committee (ALSC) accredited quality control agency. The quality mark shall be an indication of conformance to the requirements of treatment and retention for type I log camels. 3.7.2 Treatment of steel. Steel used in construction of hawse pipes shall be hot dip galvanized in accordance with ASTM A 1
40、53. 3.8 Hawse pipes. When specified (see 6.2), hawse pipes shall be installed in each end of log camels. Steel plate washers shall be welded as flanges to each end of the pipe, after insertion of the pipe in the log. Steel plate washers shall be not less than 7.5-inch (191 mm) diameter by 0.5-inch (
41、13 mm) thick. The hawse pipes shall be located at a distance of 20 percent of the total log length from each end of the camel. 3.9 workmanshiu. 3.9.1 Welding. Welding procedures shall be in accordance with AWS D1.l. Welds shall be of sufficient size and shape to develop the full strength of the part
42、s connected by the welds. Welds shall transmit stress without permanent deformation or failure when the parts connected by the weld are subjected to proof and service loadings. 4. VERIFICATION 4.1 Classification of ins-pection. The inspection requirements specified herein are classified as follows:
43、a. First article inspection (see 4.2). b. Confonnance inspection (see 4.3). 4.2 First article insDection. The first article inspection shall be performed on one complete camel log when a first article is required (see 3.2 and 6.2). This inspection shall include the examinations of 4.4 and the test o
44、f 4.5. The frrst article may be either a first production item or a standard production item from the suppliers current inventory provided the item meets the 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-2b28D El 999990b 20bL4b0 729 W MI
45、L-DTL-28628D requirements of the specification and is representative of the design, construction, and manufacturing technique applicable to the remaining items to be furnished under the contract. 4.3 Conformance inspection. The quality conformance inspection shall include the examinations of 4.4 and
46、 the buoyancy test of 4.5. Unless otherwise specified (see 6.2), the inspection will be performed at the point of production. 4.4 Examination. Each log camel shall be examined for compliance with the requirements in section 3 of this specification. This element of inspection shall encompass ail visu
47、al examinations, dimensional measurements, review of certificates of inspection, and check for the approved agency quality mark. Any log camel having one or more defects shall be cause for rejection of that camel. 4.4.1 Examination before treatment. Type I log camels shall be examined for compliance
48、 with the requirements of 3.3 through 3.5.1, within 10 days prior to treatment. 4.4.2 Examination after treatment. After preservative treatment, and installation of hawse pipes ifrequired, type I log camels shall be examined for compliance with 3.6 through 3.9.1. 4.5 Buovancy test. Prior to treatmen
49、t, each log shall be placed in water and allowed to float freely. The log shall conform to the buoyancy requirements of 3.3.1.5. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD personnel, these personnel need to contact the responsible packaging activity to ascertain requisite packaging req
