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Posted: Sat Jun 21, 2008 10:59 am
by Sparky
Hi All
I wonder if anyone could recommend the length of time to leave before drilling into new concrete (as in a few days old)to fix a rawl bolt into place
Regards
Sparky
Posted: Sat Jun 21, 2008 2:52 pm
by seanandruby
drill away now you will be ok
Posted: Sat Jun 21, 2008 3:49 pm
by Ramsay
depends on the size and thickness of concrete you have layed
how thick is the concrete ?
Posted: Sat Jun 21, 2008 4:13 pm
by Sparky
Hi
The thickness of the concrete is 40mm with a mesh in it
Regards
Sparky
Posted: Sat Jun 21, 2008 4:14 pm
by Sparky
Sorry the size is 2m x 2m
Regards
Sparky
Posted: Sat Jun 21, 2008 6:17 pm
by Ramsay
Iam no expert but if its been down a few days for that size it should b ok.
i have just layed concrete for a garage base its 100 mm thick i have been told to leave it a week before drilling into it.
Posted: Sat Jun 21, 2008 7:47 pm
by Sparky
Thanks
My base is also 4" thick and not 40mm I typed it in a bit of a rush !
So guess I will give it a week and have a go
Regards
Posted: Sun Jun 22, 2008 8:34 am
by seanandruby
the longer you leave it the harder it is to drill into it.
Posted: Sun Jun 22, 2008 8:48 am
by Ramsay
sds drill on hammer with sds drill bit goes through concrete no probs
Posted: Mon Jun 23, 2008 8:26 pm
by jotto
not to hijack this thread but how long to drill into a 300mm base, same type of thing, rawl bolt fixtures?
As said before, decent SDS hammer drill so no worries!
Posted: Fri Jun 27, 2008 12:15 am
by matt h
i,v drilled next day, and used epoxy as added security, and the posts are still there years later:)
Posted: Fri Jun 27, 2008 7:37 pm
by Dave_L
Yep - I shuttered a section within a milton ring, poured the concrete to form the 'bench' for the hydroflow control device - removed the shutter the next morning and drilled the 14mm holes for the rag-bolts - the concrete was hard as hell - drilled as white dust.
Aslong as you have a decent mix, you'll be fine.
Edited By Dave_L on 1214591868