1、MIL-G-l8015B(SH) 2 May 1994 SUPERSEDING 15 March 1957 (See 6.7) MIL-G-l8015A(SHIPS) rc Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 03R42, 2531 Jeffe
2、rson Davis Hwy., Arlington, VA 22242-5160 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. MILITARY SPECIFICATION GRATINGS, METAL, OTHER THAN BAR TYPE (SHIPBOARD USE) This specification is approved for use by the Naval Sea
3、Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers aluminum and steel floor gratings other than bar types for shipboard use. 1.2 Classification. Gratings shall be of the followi
4、ng types and classes, as specified (see 6.2): Type I - Steel, heavy Class 1 - Galvanized Class 2 - Ungalvanized Class 3 - Corrosion resistant Type II - Aluminum, heavy Type III - Steel, light Class 1 - Galvanized Class 2 - Ungalvanized Class 3 - Corrosion resistant Type IV - Aluminum, light I 1 FSC
5、5670 AMSC NIA DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-LOL5B W 99999Ob L98099b 611 MIL-G-l8015B(SH) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1
6、 Specifications. standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications
7、and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL QQ-A-200 - Aluminum Alloy, Bar, Rod, Shapes, Structural Shapes, Tube and Wire, Extruded; General Specification For. Tube and Wire, Extruded. Tube and Wire, Extruded. Tube and Wire, Extruded. Tu
8、be and Wire, Extruded. Tube and Wire, Extruded. Tube and Wire, Extruded. Wire, or Special Shapes; Rolled, Drawn, or Cold Finished; General Specification For. QQ-A-22517 - Aluminum Alloy 5052, Bar, Rod, and Wire; Rolled, Drawn, or Cold Finished. QQ-A-22518 - Aluminum Alloy 6061, Bar, Rod, and Wire; R
9、olled, Drawn, or Cold Finished. QQ-A-250 - Aluminum and Aluminum Alloy Plate and Sheet: General Specification For. QQ-A-25016 - Aluminum Alloy 5083, Plate and Sheet. QQ-A-25017 - Aluminum Alloy 5086, Plate and Sheet. QQ-A-25018 - Aluminum Alloy 5052, Plate and Sheet. QQ-A-25019 - Aluminum Alloy 5456
10、, Plate and Sheet. QQ-A-250110 - Aluminum Alloy 5454, Plate and Sheet. QQ-A-250111 - Aluminum Alloy 6061, Plate and Sheet. QQ-S-766 - Steel Cres 304, Plate and Sheet. QQ-A-20014 - Aluminum Alloy 5083, Bar, Rod, Shapes, QQ-A-20015 - Aluminum Alloy 5086, Bar, Rod, Shapes, QQ-A-20016 - Aluminum Alloy 5
11、454, Bar, Rod, Shapes, QQ-A-20017 - Aluminum Alloy 5456, Bar, Rod, Shapes, QQ-A-20018 - Aluminum Alloy 6061, Bar, Rod, Shapes, QQ-A-20019 - Aluminum Alloy 6063, Bar, Rod, Shapes, QQ-A-225 - Aluminum and Aluminum Alloy Bar, Rod, MILITARY MIL-M-17194 - Metal, Expanded, Steel. 2 Provided by IHSNot for
12、ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-G-LBOLSB 9999906 I1980997 558 = S TANDARD S MILITARY MIL-STD-163 - Steel Mill Products Preparation for Shipment and Storage. (Unless otherwise indicated, copies of federal and military specifications, standards, and handb
13、ooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following document forms a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents
14、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 documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 153 - Sta
15、ndard Specification for Zinc Coating (Hot-Dip) A 167 - Standard Specification for Stainless and Heat- on Iron and Steel Hardware. (DOD adopted) Resisting Chromium Nickel Steel Plate, Sheet, and Strip. (DOD adopted) (Application for copies should be addressed to the American Society for Testing and M
16、aterials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of P
17、recedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specifications, specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable la
18、ws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Material. 3.1.1 Steel. Types I and III gratings shall be made of either carbon steel rolled, or drawn, or high tensile alloy steel, rolled or drawn, or cres 304 rolled, or drawn as specified in QQ-S-766. 3 Provided
19、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-IIOIIB 9999906 II980998 494 MIL-G-l8015B(SH) 3.1.2 Aluminum. Types II and IV gratings shall be made of material meeting the chemical requirements of QQ-A-200 and QQ-A-20014 through QQ-A- 20019, QQ-A-225,
20、QQ-A-22517 and QQ-A-22518, QQ-A-250 and QQ-A-25016 through QQ-A-250111. When the material is not specified, the manufacturer may furnish any of these materials (see 3.2 and 6.2). 3.2 Construction. The grating panel sizes shall be as specified (see 6.2). Where nonrectangular shapes or cutouts in rect
21、angular panels are required, they shall be as shown on the drawings as specified, (see 6.2). The edges of nonrectangular shapes and cutouts where more than 4 bearing bars or channels are included, or where the expanded metal is cut, shall be finished with banding bars of the same depth as the bearin
22、g bars. The banding bars when required shall be welded to the bearing bars or channels of the grating at least every fourth bearing bar or channel and in every corner. bearing bars or channels shall be tack welded. The ends of 6000 series aluminum grating panels shall be finished or banded by means
23、of spacers or bridges to preclude welding. The 5000 series aluminum may be welded. Intervening 3.2.1 Clamps and fasteninEs. Suitable clamps or other fastenings shall be provided when specified, (see 6.2). Such clamps or fastenings shall be of the same material and be finished in the same manner as t
24、he gratings, shall not extend above the surface of the gratings, and shall be of such construction as to provide means for holding and securing the gratings to the supporting structure, with adequate simplicity of installation and for removal and replacement in service. 3.2.1.1 Thickness and spacing
25、. The thickness and spacing of all bearing bars or channels and the depth, thickness, and spacing of all cross or rectilinear bars or expanded metal and frame shall be adequate to support the loads specified in table I without deflection due to bending, and without lateral displacement, warping, or
26、distortion of any of the parts greater than 0.2 inch for steel, or 0.5 inch for aluminum, and without permanent set greater than 0.008 inch (see 4.3.4). 3.2.2 Strength and load. Gratings shall be of such construction (except cross-bar) as to meet the strength and load requirements of this specificat
27、ion (see 3.5). They may be of expanded metal, extruded and welded sections, or of other suitable construction (except cross-bar). Unless otherwise specified (see 6.2), gratings having serrated surface members will be permitted. Supports for gratings, if required, shall be of the dimensions specified
28、 (see 6.2). 3.2.2.1 Steel expanded metal. Steel expanded metal gratings shall meet the requirements of MIL-M-17194 and 3.5 of this specification, and such other requirements as may be specified (see 6.2). 3.2.3 Openings. Unless otherwise specified (see 6.2), the maximum dimensions of the openings sh
29、all be 15/16 by 3-7/16 inch as for expanded metal gratings and 1 by 4 inches for gratings of other types (see 3.3). Where specified, length of openings shall be based on load tests. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-G-lt8015B 9999
30、906 1980999 320 Test loadi1 1 : - 7 Concentrated midway 4.3.4). Design load per square Pounds ppp 1 “:o! 1 if 4.40 - - etween support 2 feet long, on a 3 Test load&/ Pounds 900 450 Foot spn ( Maximum weight Per square fOOtZ/ Pounds - 5.00 3.70 - ee - 2/ Finished, unbanded, including paint, bearing b
31、ars, or channels, and on types I and III, zinc-coating (galvanized). 3.6. Protective finish. 3.6.1 Types I and III. class 1. 3.6.1.1 Zinc-coating (Ralvanizedl. Unless otherwise specified, gratings shall be completely and evenly hot-dip zinc-coated (galvanized) after fabrication in accordance with AS
32、TM A 153. The zinc-coating shall not separate from the basic metal when tested for adhesion as specified (see 4.3.3.1). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-LBOLSB m 9799906 LBLOOO 740 m 3.7 Workmanship. Gratings shall be fabricate
33、d accurately and shall be free from warps, twists, and other defects affecting appearance or serviceability. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspe
34、ction requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government.
35、 The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3
36、 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies
37、 submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either
38、indicated or actual, nor does it commit the Government to accept defective material. 4.2 Sampling for quality conformance inspection. 4.2.1 m. For purposes of sampling, a lot shall consist of all gratings of the same type, class, and size offered for delivery at the same time . 4.2.1.1 Sample select
39、ion. Grating shall be selected in accordance with table II for the inspection of 4.3.1 through 4.3.3. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-G-1OL5B 9999906 198LOOL 687 Lot size number of gratings or square feet 2 to 5 TABLE II, Sampl
40、ing for visual, weight. dimensional, and zinc adherence (regular and irregular shapesl. Sample sizell number of gratings or square feet 111 Al 1 6 to 50 51 to 90 91 to 150 151 to 280 281 to 500 501 to 1200 1201 to 3200 3201 to 10,000 10.000 to 35,000 I 5 7 11 13 16 19 23 29 35 - 11 When ordered by s
41、quare feet, no more than 5 square feet of the sample shall be in any one grating. 4.2.1.2 Sampling for load test. Sample gratings shall be selected from the lot in accordance with table III and subjected to the deflection and permanent set test of 4.3.4. TABLE III. Sampling for test of deflection un
42、der load and permanent set. Lot size Pieces or square feet 3 41 66 111 181 301 501 801 1301 3201 8001 22001 100001 550001 to 40 to 65 to 110 to 180 to 300 to 500 to 800 to 1300 to 3200 to 8000 to 22000 to 11oooc to 55000C to over Regular shapes Sample pieces or square feetil 3 3 3 4 5 7 10 15 20 25
43、30 35 35 35 Irregular shapes Sample pieces or square feet&/ 3 4 5 7 10 15 20 25 30 40 50 75 100 150 1 - i/ When ordered by square feet, no more than 5 square 7 feet of the sample shall be in any one unit. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
44、-,-MIL-G-LOL5B M Ob LLOO2 513 4.3 Examinations and tests. 4.3.1 Weight and dimensions. Each of the sample grating selected in accordance with 4.2.1.1 shall be examined to determine conformance with the weight and dimensional requirements of this specification (see 3.2.3, 3.3 and table I). 4.3.2 Prot
45、ection finish. Each sample zinc-coated grating shall be surface examined after galvanizing to determine conformance with 3.6.1.1. 4.3.3 Zinc-coatinq. 4.3.3.1 Adhesion of coating. The sample gratings selected in accordance with 4.2.1.1 shall be struck a hard glancing blow with a straight peen or scal
46、ing hammer having all edges ground to a radius of not less than 3/64 inch and weighing approximately one pound. 4.3.4 Load. The sample gratings selected in accordance with 4.2.1.2 shall be supported by 2 supports with bearing width not to exceed 1 inch. These supports shall be placed 3 feet apart. T
47、he gratings shall be tested with the load specified for the type in accordance with table I, suspended from a bar placed midway between the supports. The bar shall not have a bearing width on the grating greater than 2 inches. Deflection and permanent set shall be determined by suitable gauges. 4.4
48、Inspection of packaging. Sample packs, and the inspection of the packaging (preservation, packing and marking) for shipment, stowage, and storage shall be in accordance with the requirements of section 5 and the documents specified therein. 5. PACKAGING (The packaging requirements specified herein a
49、pply only for direct Government acquisition. preparation for delivery requirements of referenced documents listed in section 2, see 6.2.) For the extent of applicablility of the packaging or 5.1 Packaginq. Packaging (preservation and packing) shall be level A or C as specified (see 6.2). 5.1.1 Levels A and C. Gratings, separated for type and class shall be Skidding packed for shipment in secured lifts on nominal 2-by-4 i
