MIL-STD-209 Lifting And Tiedown ProvisionsThis standard establishes dimensional limits, design considerations, positioning requirements, and strength requirements for lifting to include helicopter sling load HSL and tiedown provisions for lifting or tying down tanks and other tracked vehicles, tactical wheeled vehicles, helicopters, and other military equipment shipped assembled or disassembled in unboxed or uncrated condition, and for restraining cargo or accessories to such equipment. The lifting and tiedown requirements in this standard are necessary to permit compatibility between military equipment and the transportation systems used for deployments.

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MIL-8TD-209K APPENDIX C

L 2 x (T2S + T4S )

15 x 30,000

48 (L

2 + L4 )

= (15 + 10) = 18,000 lb

b. To restrict movement toward the left, two provisions can be used:

18 38

= 30,000 lb

For this example, the provisions are not located symmetrically about the CG so the proportionate share of the load that is applied to each provision is not equal and is as follows:

L3 x (T1S + T3S )

10 x 30,000

18 (L

1 + L3 )

= (15 + 10) = 12,000 lb

L1 x (T1S + T3S )

15 x 30,000

38 (L

1 + L3 )

= (15 + 10) = 18,000 lb

Ultimate strength requirements (1.5 x design limit load) are:

Right U

= T28 x 1.5 = 1.5 x 12,000 lb = 18,000 lb

= T48 x 1.5 = 1.5 x 18,000 lb = 27,000 lb

Left U

= T18 x 1.5 = 1.5 x 12,000 lb = 18,000 lb

= T38 x 1.5 = 1.5 x 18,000 lb = 27,000 lb

Source: https://assist.dla.mil -- DCow-6nloaded: 2014-09-28T23:10Z Check the source to verify that this is the current version before use.