Runners and skid assembly

TM 38-260

e. Leg and end frame machines. Leg and end frame type machines that require reinforced diagonals or cradle

blocking to prevent end thrust on the bed and straining of the super structure, legs, frame, or mounting points, shall be

blocked and braced with wood blocks and tie rod assemblies. Refer to MIL-HDBK-701 for materials and their application.

f. Runners and skid assembly. Skids should be assembled to conform to the general characteristics of the skids

shown in figures 8-5, 8-6, and 8-7. Runners shall be of one piece whenever possible and all runners shall be equal in

length and cross sectional dimensions. Runners should be beveled on each end from the bottom edge one-third the

height at a 45 degree angle to the bottom. When lumber of necessary size and length is not available, splices or

laminated runners may be substituted provided the requirements of MIL-IIDBK-701 are met.

Explanation of spliced and laminated runners are as follows:

(1) Spliced runners. Spliced runners shall be constructed with one splice per runner. The splice should be

located at the one-third point measured from either end of the skid. Adjacent runners shall be spliced at alternate ends.

The surfaces holding bolt heads shall be positioned so that the load is transmitted to the floor.

(2) Laminated runners. Lumber used in the lamination of runners shall be not less than a 2 inch nominal

thickness. Lamination shall be on a vertical plane only, and the overall width shall be not less than that required for solid

runners.

8-22