Chockstone Forum

      Sponsored By
      ROCK
   HARDWARE

Chockstone Photography

Australian Landscape Prints

Chockstone Forum - Gear Lust / Lost & Found

Rave About Your Rack Please do not post retail SPAM.

Topic Date User

Help me build my woody (or, you build, I pay) 7-Sep-2009 At 1:38:23 PM mikl law

Message

WARNING, WILD GENERALIZATIONS TO FOLLOW-
Generally wooden structures have unacceptable deformations long before they break. If it doens't flex too much, it will never break. You can always reduce flex by tieing them back to the walls more, either with old rope, or with an extra beam. Having largish beams helps, 30 x 70 mm would be the minimum, the depth is the critical dimension (I would prefer 90 mm).

The real issue is how strong are the walls you are tieing the structure to ? If it's in a garage you can also tie into the ceiling beams. If you live somewhere "floppy" you might even need to make some bracing on the outer edges of the woody, like an A frame.
Push the wall hard and see what happens.
The ceiling genrally supports the top of a wall well for side load.
Don't expect a few dynabolts to hold well in old houses, the bricks can just pull straight out of the wall, if you need to dynabolt to the wall, bolt a longish beam to the wall, and tie the structure back to this, or bolt through the wall to a beam on the outside to spread the load.