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DN Runner Interpretations Issued by the Technical Committee

Effective Date: 
April 14, 2010

E. Runners

4/14/2010
In Specification E.9. the last sentence states that it is not allowed to taper or thin the ¼” (6.35mm) thick steel plate runner below the minimum allowed thickness toward the sharpened ice contact edge. Therefore the interpretation dated 1974 that repeats the language of E.9. is removed from the interpretations.
4/14/2010
In a previous 1974 interpretation the second sentence referring to hard weld on the ice contact edge of allowed “T” sections is deleted. This interpretation now reads: A slot may be machined on the top of allowed “T” sections to facilitate mounting to wood body.
4/14/2010
Hard weld may be applied to the ice contact edge of all runners.
4/14/2010
A previous 1974 interpretation that disallowed the welding of a bead in the corner of “T” runners is deleted and replaced with a new interpretation: Runner “T’ sections may not be formed by welding and may not be altered by welding a bead in the corners.
4/14/2010
The steel angle section allowed in E.2.f need not be mounted symmetrically on the wood body but must be mounted to the wood body in a manner that the ice contact edge corresponds to the apex of the included angle of the steel section.