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-STD-209K APPENDIX C

APPENDIX C

SAMPLE PROBLEM FOR DETERMINING THE REQUIRED STRENGTH OF THE TIEDOWN PROVISIONS

C.1  SCOPE

C.1.1  Scope.  This appendix establishes a method for determining the required strength of the tiedown provisions.

C.2  APPLICABLE DOCUMENTS.  This section is not applicable to this appendix. C.3  NOTATION

C.3.1 Symbols.

- design limit load in longitudinal direction, in pounds

- ultimate load in longitudinal direction, in pounds

- design limit load in vertical direction, in pounds

- ultimate load in vertical direction, in pounds

- design limit load in lateral direction, in pounds

- ultimate load in lateral direction, in pounds

- lateral distance from CG to provision 1, in inches

- lateral distance from CG to provision 2, in inches

- lateral distance from CG to provision 3, in inches

- lateral distance from CG to provision 4, in inches

- longitudinal distance from CG to provision 1, in inches

- longitudinal distance from CG to provision 2, in inches

- longitudinal distance from CG to provision 3, in inches

- longitudinal distance from CG to provision 4, in inches

GW - gross weight, in pounds.

Source:  https://assist.dla.mil  --  DCow-1nloaded:  2014-09-28T23:10Z Check  the  source  to  verify  that  this  is  the  current  version  before  use.