3.2 First article . Unless otherwise specified (see 6.2), a sample shall be subjected to first article inspection (see 4.3 and 6-3). Any changes or deviations of trucks from the approved first article during production will be subject to the approval of the contracting officer. Approval of the first article will not relieve the contractor of his obligation to furnish trucks conforming to this specification.

3.3 Material. Material shall be as specified herein. Materials not specified shall be selected by the contractor and shall be subject to all provisions of this specification.

3.3.1 Steel. Unless otherwise specified (see 6-2), steel shall conform to ASTM A36.

3.3.2 Wood. The wood for the two platform boards shall be any one of the following species: Ash (white), Beech, Birch, Hickory, Maple (hard), Oak, Pecan, or Rock Elm.

3.3.2.1 Quality. The boards shall be free from decay, holes, loose knots, larvae channels, shake, split, warp, brashness, and slope of grain exceeding I inch in 10 inches. Sound, tight knots that do not exceed one-third the width of the board in which they appear, and stain which does not obscure the grain, will be permitted.

3.3.2.2 Moisture content. At the time of fabrication of the truck, the moisture content of the lumber for the wood boards shall be not less than 12 percent nor more than 19 percent.

3.4 Design and construction.

3.4.1 Frame. The truck frame shall be fabricated of steel as specified in 3.3.1, and shall be of all welded construction.

3.4.1.1 Capacities and sizes. The capacities and sizes of the trucks shall be as shown in table I.

TABLE I. Capacities and sizes.

3.4.3 Platform. The platform boards shall be fabricated of any one of the woods specified in 3.3.2, and shall conform to the quality and the moisture content specified in 3.3-2.1 and 3.3-2.2, respectively. Each board shall be not less than 13/16 inch thick and 7-1/2 inches wide. Length shall be as required for the ends to fit flush with the 24-inch sides of the frame. Except for the bottom surface, all surfaces of each board shall be smoothly finished: and a 1/8-inch x 45-degree chamfer shall be placed on all top edges. The two boards shall be securely bolted with not less than eight bolts(four bolts on each board) to the top of the frame so that one side of each board is flush with each of the outer 18-inch sides. Bolts shall be not less than 3/8 inch in diameter, and bolt heads shall not protrude above the board surface. When mounted, boards shall be supported by the frame on all four sides a-ad shall not extend beyond the frame on any side. The inner sides (along the board length) may be inset from the inner frame supports not more than 1/8 inch.

3.4.4 Fastening devices. All bolts, capscrews, and nuts shall be provided with lockwashers or other locking devices and shall be tightly drawn. All hardware shall be treated and plated in accordance with commercial practice to prevent corrosion.

3.5 Performance.

3.5.1 Static load. The truck shall withstand static load of 200 percent of rated capacity (see table I without evidence of damage, weld failure, distortion, or permanent deformation when tested in accordance with 4.5.2.2.

3.5.2 Rolling resistance. The truck shall be capable of being pushed ortowed with a maximum force no greater than 2-1/2 percent of rated load plus the weight of the truck.

3.6 Identification marking. Each truck shall be identified with an identification plate containing the following information: Ownership designation, nomenclature, contract number, national stock number (NSN), and manufacture. The plate shall conform to MIL-P-514, type III, composition C(GG-5-455) type I, grade A, class D unless otherwise specified. Theidentifying data shall be stamped in letters in accordance with MIL-P-514. The plate shall be securely attached to the truck.

3.7 Treatment and painting. The parts of the truck normally painted shall be cleaned, treated and painted in accordance with the contractor's commercial practice.

3.8 Workmanship. The trucks shall be clean and correctly assembled. All burrs, splinters, and sharp edges shall be removed. No part shall be impaired or damaged in any way or show any evidence of rust or corrosion.

4. QUALITY ASSURANCE PROVISIONS

4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements specified herein. Except as otherwise specified in the contracts 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. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.

4.1.1 Component and material inspection. The contractor is responsible for insuring that components and materials used are manufactured, examined, and tested in accordance with referenced specifications and standards, as applicable.

4.2 Classification of inspections. The inspection requirements specified herein are classified as follows:

4.5-2.1 Moisture content. Determination of the moisture content of the wood shall be made in accordance with ASTM D2016, electric moisture meter method. Three readings shall be taken. Nonconformance to 3.3.2.2 shall constitute failure of this test.

4.5-2.2 Static load. The truck shall be placed on a dry, smooth, level, concrete floor, and loaded with a uniformly distributed load equal to 200 percent of rated capacity as shown in table I. The truck shall support this load for a period of I hour after which the load shall be removed and thetruck examined. Nonconformance to 3.5.1 shall constitute failure of this test.

4.5-2.3 Rolling resistance. The truck, uniformly loaded up to its rated capacity, shall be weighed and then placed on a dry, smooth, level, concrete surface. The truck with rated load shall be accelerated to a minimum speed of 2 miles per hour MPH) by means of a suitable towing device employing a tension dynamometer. The maximum &age reading of the dynamometer at this speed shall be recorded over a minimum travel distance of 25 feet. This test shall be repeated in the opposite direction so as to traverse the initial path and terminate at the starting point. Nonconformance to 3.5.2 shall constitute failure of this test.

4.6 Inspection of packaging.

4.6.1 Quality conformance inspection of pack.

4.6.1.1 Unit of product. For the purpose of inspection, a completed pack prepared for shipment shall be considered a unit of product.

4.6.1.2 Sampling. Sampling for examination shall be in accordance with MIL-STD-105.

4.6.1.3 Examination. Samples selected in accordance with 4.6.1.2 shall be examined for the following defects. AQL shall be 2.5 percent defective.

5.1.2 Commercial. Commercial packing shall be in accordance with ASTM D 3951.

5.2 Marking

5.2.1 Military. Marking for military levels of protection shall be in accordance with MIL-STD-129.

5.2.2 Commercial. Commercial packs shall be marked in accordance with ASTM D 3951. In addition, weight and cube data shall be marked on the shippingcontainer.

6. NOTES

6.1 Intended use. Type I trucks are intended for moving loads (not exceeding 1000 pounds) over short distances on paved surfaces. Type II trucks are intended for use singly or in pairs for moving machinery and other bulky loads (not exceeding 2400 pounds per truck) over short distances on paved surfaces.

6.2 Ordering data. Procurement documents should specify the following:

a. Title, number, and date of this specification.

b. Type required (see 1.2).

c. When first article is not required (see 3.2).

d. Time frame required for submission of first-article model and number of trucks required (see 3.2).

e. Type of steel required if other than as specified (see 3.3.1).

f. Degree of packing required (see 5.1).

g. When strapping shall be other than as specified (see 5.1.1).

6.3 First-article. When a first article inspection is required, the item(s) should be a preproduction model. The first article should consist of one or more units of each type specified (see 6.2). The contracting officer should include specific instructions in acquisition documents regarding arrangements for examinations, tests and approval of the first article test results and disposition of the document's first article.

Custodian:
Army - ME

Review activities:
Army - AT
DLA - GS

User activity:
Navy - MC

Preparing activity:
Army - ME
Project 3920-0158

Figure 1. General Purpose Dolly-Type1.

View Figure 2. Machinery Dolly-Type2.

Information courtesy of USA Information Systems
www.usainfo.com

This material is based upon work supported by the National Science Foundation under Grant No. 0633602. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).

© Copyright 1995-2024 — All rights reserved.
Pennsylvania State University
Department of Engineering Science and Mechanics
Send comments about this site to: webmaster@esm.psu.edu

Penn State is committed to affirmative action,
equal opportunity, and the diversity of its workforce.

This publication is available on alternative media on request.