NDS table 11.5.1C

[btomcik]

NDS Table 11.5.1C shows spacing requirements between fasteners in a row. For loading perpendicular to the grain, and to allow the geometry factor C-delta to be 1.0, the table says the spacing requirement, paraphrasing here, is "spacing required by attached members." For C-delta less than 1 and for loading parallel to the grain, the spacing is given as a multiplier of the fastener diameter D.

What does "spacing required by attached members" mean? I've asked two other engineers in our office, and have looked at my timber design text, as well as the Timber Construction Manual and nobody knows and the texts don't explain either.

Thanks.

 

[Lion06]

It means that whatever the spacing requirements are for the member you're connecting to is what controls the spacing. If you're attaching to steel, then the spacing for the steel is what you'll use.

 

[woodman88]

My 2005 NDS Commentary also agrees with Lion06.

Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.