Contraction joint-mesh and dowel placement
Contraction joint-mesh and dowel placement
(OP)
I have a contraction joint detail with 18" dowel bar (in basket) centered about a T/4 deep sawed joint. The welded wire fabric is shown ending 12" from each side of the joint. This produces a 3" gap with no reinforcing, since the dowel bar is only 9" on either side of the joint. Should the WWF overlap the dowel bar by 3" or will this work?





RE: Contraction joint-mesh and dowel placement
RE: Contraction joint-mesh and dowel placement
The further away from the joint your WWF stopes the more likely there will be cracking outside the joint.
One end of the dowel bars should be graesed, so they shouldnt be relied on to prevent cracking
csd
RE: Contraction joint-mesh and dowel placement
RE: Contraction joint-mesh and dowel placement
As per the thread heading, all of the first 3 postings were in relation to dowelled joints.
As you say there is an alternative way to achieve a similar result.
I would typically use a dowelled joint where it doubles as a construction joint, ie. a break in the pour.