1、. c c MIL-T-41812H 83 777770b 0371L2L 7 U c -K3 -q% MIL-T-41812H 30 June 1988 SUPERSEDING MIL-T-41812G 22 June 1984 MILITARY SPECIFICATION TENT LINER SECTIONS, FRAME-TYPE MAINTENANCE, MEDIUM This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE
2、 1.1 Scope. This document covers flame and mildew-resist nt cotton sateen tent liner sections with covers, The liner consists of end sections and insulated intermediate sections. protection during transport. Each section is provided with a cover for 1.2 Classification. Tent liner sections shall be o
3、f the following types as specified (see 6.2). Type I - End section “A“, 4 feet wide Type II - End section “B“, 4 feet wide Type III - Intermediate section, 8 feet wide 2. APPLICABLE DOCUMENTS 2.1 Government documents. * 2.1.1 Specifications, standards, and handbooks. standards, and handbooks form a
4、part of this spec * The following specifications, Eication to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the sol
5、icitation. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Amy Natick Research, Development, and Engineering Center, Natick, MA 01760-5014 by using the self-addressed Standardization Docume
6、nt Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC 6/A FSC 8340 * DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. /- THIS DOCUMENT CONTAINS -76 PAGES. _ -. r . Provided by IHSNot for ResaleNo reproduction or networking pe
7、rmitted without license from IHS-,-,- I MIL-T-4LL2H 3 I 777970b 0373322 O = FEDERAL L-P-378 T-T-87 1 T-T-9 11 V-F-106 V-T-285 QQ-A-60 1 QQ-B-613 RR-C-271 ccc-c-429 CCC-C-467 DDD-L- 2 O PPP-B-60 1 MIL-T-41812H Plastic Sheet and Strip, Thin Gauge, Polyolefin Twine, Cotton, Wrapping Twine, Fibrous, Jut
8、e Fasteners, Slide, Interlocking Thread, Polyester Aluminum Alloy Sand- Castings Brass, Leaded and Nonleaded: Flat Products (Plate Bar, Sheet and Strip) Chains and Attachments, Welded and Weldless Cloth, Osnaburg, Cotton Cloth, Burlap, Jute (or Kenaf) Label: For Clothing, Equipage, and Tentage (Gene
9、ral Boxes, Wood, Cleated-Plywood Use) MILITARY MIL-L-1709 MIL-C-2399 MIL-R-3390 MIL-G-16491 MIL-R-30500 MIL-C-43122 MIL-C-43256 MIL-T-43566 MIL-C-43627 MIL-W-44049 STANDARDS FEDERAL FED-STD-751 MILITARY MIL-STD-105 MIL-STD-129 -T. Lines, Tent Cement, Liquid, Tent Patching Rings, Dee Grommet, Metalli
10、c Rope, Polyester Cloth, Sateen, Cotton, Flame Resistant Treated Cord, Polyester, Solid Braid Tape,.Textile, Cotton or Polyester, General Purpose, Cloth, Duck, Cotton, Plied Yarns, Fire, Water, Natural or in Colors Weather and Mildew Resistant Treated, Lightdry Finish Webbing, Textile and Tape, Text
11、ile, Polypropylene, General Purpose, Natural or in Colors - Stitches, Seams, and Stitchings - Sampling Procedures and Tables for Inspection - Marking for Shipment and Storage by Attributes a U 8 a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T
12、-YL32H 3 = 997970b 0373323 2 o MIL-T-418 12H .I; (Copies of specifications, standards, and handbooks required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) * 2.1.2 Other Government docume
13、nts, drawings, and publications. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein, Unless otherwise specified, the issues shall be those in effect on the date of solicitation. Department of the Army Field Manual FM
14、10-16 General Repair of Tents, Canvas and Webbing * (Copies may be obtained from the Superintendent of Documents, U.S. Government Printing office, Washington, DC 20402.) DRAWINGS * US ARMY NATICK RESEARCH, DEVELOPMENT AND ENGINEERING CENTER 5-4-686 - Tent Liner Sections, Frame-Type, Maintenance, 5-4
15、-688 - Intermediate Section Assembly Details and Sections 5 -4-68 9 - End Section “A“ and “B“ 5-4-691 - Erection instructions 5-4-703 - Cover for Intermediate Section 5-4-33 5 9 - Tent Cover Medium; End Section, Miscellaneous Details * (Copies of drawings, publications, and other Government document
16、s required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) * 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwi
17、se specified, the issues of the documents which are DOD adopted shall be those listed in the issue of the DODISS specified in the solicitation. issues of documents not listed in the DODISS shall be the issues of the nongovernment documents which are current on the date of solicitation. Unless otherw
18、ise specified, the MRICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 241 - Aluminum and Aluminum-Alloy Seamless Pipe and Seamless D 3951 - Extruded Tube Standard Practice for Commercial Packaging (Copies may be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelp
19、hia, PA 19103,) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-T-43B32H 83 m 7777706 0373324 4 MIL-T-4 1 H J; (Nongovernment standards and other publications are normally available from the organizations which prepar.e or which distribute the
20、documents. documents also may be available in or through libraries or other informational services .) These * 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Nothing in t
21、his specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS * 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3, 6.2, and 6.5). 3.2 Mater
22、ials and components. Materials and components shall be as specified herein (see 6.7). * 3.2.1 Cloth, sateen, cotton. The cloth for the tent liner sections shall conform to class 1 of MIL-C-43122. Requirements for shrinkage sh,all not apply. 3.2.2 Cloth, duck, cotton. The cloth for the covers shall c
23、onform to MIL-C-43627, Olive Drab 7. 3.2.3 Tape, cotton. The tapes shall conform to type I, class la, 3/4 inch, 1 inch, and 2 inch widths of MIL-T-43566 and the shade shall be natural. Alternatively, the tape shall be polypropylene conforming to type I, class 3 of MIL-W-44049. Jc 3.2.4 Thread, polye
24、ster. * 3.2.4.1 Liner. The thread for the liner shall conform to type I or II, class 1, sub-class A, color natural of V-T-285. * 3.2.4.2 Cover. Thread for the cover shall conform to type I, class 1, sub- class B of V-T-285 and the color shall be Olive Drab S-1 (C.A. 66022). * 3.2.4.3 Sizes. The thre
25、ad sizes shall be as follows: For all stitching on tent liner, except stitching indicated by “2“ on drawings For stitching on tent liner indicated by “2“ on drawing For all stitching on cover except stitching indicated by “Z“ on drawings For all stitching on cover indicated by “Z“ on drawings For ba
26、rtacking and zig-zag stitching 4 U - Size E for needle and - Size E for needle, size B - Size F for needle and bobbin bobbin or looper - Size F for needle, size E - Size E for looper Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-qLL2H 83 3797
27、7Ob 0373325 b = MIL-T-41812H 3.2.5 Cord, polyester. The polyester cord shall be natural in color, 1/8 inch diameter and shall conform to MIL-C-43256. 3.2.6 Rope, polyester. The rope shall conform to 3/4 inch circumference (1/4 inch diameter) and 5/8 inch circumference (3/16 inch diameter) of MIL-R-3
28、0500. 3.2.7 Plastic film. The unsupported polyethylene film used for the window panes shall conform to the requirements for 0.0060 inch thick film, type I, class 1, grade A, B, or C, finish 1 of L-P-378 except that the thickness shall be 0.020 - + 0.004 inch. Requirements for watervapor permeability
29、, slip, ink adhesion, impact resistance and heat-seal strength are not applicable. 3.2.8 Lines, tent. The cover tie lines shall conform to type XXI of MIL-L-1709. * 3.2.9 Insulation. The insulation material shall be composed of glass fibers firmly bonded with a thermosetting plastic resin into a res
30、ilient mat structure 1-1/4 inches thick + 3/4 inch, -0 inch tolerance having a weight of 2.1 pounds + 10 percent per 24 square feet when tested as specified in 4.4.1.1. The batting- bulk density range shall be 0.47 to 0.92 pounds per cubic foot. 3.2.9.1 Compressional recovery. The compressional reco
31、very of the insulation material shall be not less than 90 percent when tested as specified in 4.4.1.1. 3.2.10 Grommets, metallic. The grommets shall conform to type III, class 3, size Nos. 1,2,3, and 4 of MIL-G-16491, and shall be located where indicated on drawings. * 3.2.11 Fastener, slide, interl
32、ocking. The slide fasteners shall conform to type I, style 2, size H, wire stirrup pulls of V-F-106. Slide fastener chain shall be fabricated of brass or polyester coil. shall be brass and the slider for the polyester coil shall be die cast zinc alloy. The slide fastener tape shall be dyed to match
33、Olive Drab shades S (CA 66519) and be water repellent and mildew-resistant. polyester need not be tested for mildew resistance.) after treatment will be considered acceptable. fastness to weathering. Alternatively, the slide fastener chain shall be polyester continuous monofilament in a ladder or co
34、il type configuration. of the chain shall be olive drab or natural finish brass and the sliders shall be brass. The slider for the brass chain (Tapes made of 100 percent The color of the tape The tape shall show good Color 3.2.12 Rings, dee. The dee rings shall conform to class 1 or 2, configuration
35、 A of MIL-R-3390. 3.2.13 Hook, “SV. The “S“ hook shall be galvanized, steel wire, and shall conform to the design and dimensional requirements specified on Drawing 5-4-686 (see 6.3). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- NIL-T-41LZH 3 E
36、999990b 0391126 .= MIL-T-41812H 3.2.14 Chain, machine, twist link. The chain shall conform to type I, grade C, class 5, style 2, 1/8 inch nominal size, hot dipped galvanized of RR-C-271. The eye ends shall be malleable iron, galvanized, 3/8 inch 3.2.15 End, eye. and 1/2 inch sizes (see 6.4). As an a
37、lternate, the end eye shall be made of aluminum alloy conforming to 356.0 T6 of QQ-A-601. 3.2.16 Clamp, rope, brass. The clamps which are used to secure the ends of polyester rope (alternate method) shall conform to copper alloy No. 260, sheet or strip of QQ-B-613 in the design and dimensions shown
38、on Drawing 5-4-703 (see 6.4). 3.2.17 Pipe, aluminum-alloy, seamless. The pipe shall be 6061-T6, 3/8 inch and 1/2 inch nominal pipe size, standard (schedule 40), conforming to ASTM B 241. 3.2.18 Twine, cotton. The twine shall conform to type II, class 1, 5 ply of T-T-871. 3.3 Construction. The constr
39、uction shall conform in all respects to the drawings listed in section 2 and as specified herein. 3.3.1 Stitching, machine. * 3.3.1.1 O Types of stitching. All stitch types except bartacking shall conform to FED-STD-751 as follows: For all stitching on liner sections and - Type.301, 5 to 7 stitches
40、covers, except zig-zagstitching, per inch stitching indicated by “Z“ on drawings, and alternatively for attachment of slide fasteners For all zig-zag stitching on liner - Type 304, 1/8 to 3/16 wide sect ions (bight), 10 to 14 stitches per inch For stitching on liner sections and - Type 401, 5 to 7 s
41、titches covers indicated by “Z“ on drawings per inch and alternatively for attachment of Chain portion of stitching slide fasteners shall not appear on out- side of liner sections and cover. For bartacking - 1/2 + 1/16 inch long, 1/8+ 1/32 inch wide (bight) 28 stitches per inch 6 Provided by IHSNot
42、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-4L12H 83 a 7779706 0371L27 T i MIL-T-41812H * 3.3.1.2 Type 301 stitching. Ends of all stitching shall be backstitched or overstitched 1/2 inch minimum except when caught in other stitching or turned under in a hem.
43、Thread tension shall be maintained so that there will be no loose stitching resulting in puckering of material sewn. The lock shall be embedded in the material sewn. * 3.3.1.2.1 Repairs of type 301 stitching. Repairs of type 301 stitching shall be as follows: a. When thread breaks or bobbin run-outs
44、 occur during sewing, the stitching shall be repaired by restarting the stitching a minimum of 1 inch behind the end of the stitching. - i/ 5 b. Thread breaks or two or more consecutive skipped or run-off stitches noted during inspection of the item (in-process or end item) shall be repaired by over
45、stitching. The stitching shall start a minimum of 1 inch before the defective area (1/2 inch on box, box and cross and W-W stitching) and continue a minimum of 1 inch beyond the defective area onto the existing stitching. Loose or excessively tight stitching shall be repaired by removing the defecti
46、ve stitching, without damaging the materials, and restitching in the required manner. lJ i/ When making the above repairs, the ends of the stitching are not required to be backstitched. (I) * 3.3.1.3 Type 401 stitching. Thread tension shall be maintained so that there Both ends of seams or stitching
47、 produced with a 401 will be no loose stitching. stitch type, when not turned under a hem or held down by other stitching, shall have a 1/2 to 3/4 inch chain extending beyond each end. thread) shall always be on the inside of the tent or cover. All repairs shall be made using a 301 stitch in accorda
48、nce with 3.3.1.2.1a or 3.3.1.2.1b. The looper (under * 3.3.1.4 Type 304 stitching. For type 304 stitching, thread tension shall be maintained so that there will be no loose or excessively tight stitching. Repairs shall be in accordance with 3.3.1.2.1a or 3.3.1.2.1b except that the stitching shall ov
49、er stitch the defective stitching area a minimum of three stitches onto the existing stitching. At least 1/4 inch of backstitching, overstitching or an increased number of stitches per inch shall be used to secure the ends of stitching. * 3.3.1.5 Automatic stitching. Automatic stitching machines may be used to perform any of the required stitch patterns provided the requirements of the stitch pattern, stitches per inch, s
