AS3600-2009
AS3600-2009
(OP)
Hi,
This is actually from previous versions of the code also, however Cl 8.1.10.4 (b) says that 1/4 of the midspan positive reo "shall continue past the near face of the support"
How come there is no distance prescribed? what does this mean? does 0.1mm past the face comply?
Thanks
This is actually from previous versions of the code also, however Cl 8.1.10.4 (b) says that 1/4 of the midspan positive reo "shall continue past the near face of the support"
How come there is no distance prescribed? what does this mean? does 0.1mm past the face comply?
Thanks





RE: AS3600-2009
It just shows the bars extending 'a bit' past the face, no dimension given.
I would use 50mm min.
RE: AS3600-2009
RE: AS3600-2009
I guess it just needs enough that the closest shear tie has some anchorage
RE: AS3600-2009
That is a minimum requirement. If you have any condition like support settlement or large load reversals or if it is a roof slab with temperature differentials, basically anything that might put stress in the bottom near the support, I would lap the bars at the bottom! Doesn't cost much is is a lot safer.
Hokie66,
I disagree that this applies only if 6.10 is used!
RE: AS3600-2009
RE: AS3600-2009
8.1.10.4 must be satisfied for all designs.
8.1.10.6 is the minimum deemed to comply bar termination rules to be used where you do not actually do a full analysis and determine bending moment diagrams, points of contraflexure, etc and are therefore unable to calculate real termination requirements. ie when you use 6.10 to determine maximum -ve and +ve design bending moments.
But as I said, I would always at least provide a nominal lap on bottom bars, but that may be because of my PT experience.