Concrete Question

[Mark H]

I laid the slab for my new garage today,6mtr x 5mtr x150mm deep.It's a 35 Newton mix(whatever the hell that means!) and has a fibre additive.The garage walls are prefabricated timber frame panels and therefore require a timber sole plate.I plan on fixing the sole plate to the slab using stainless steel Hilti throughbolts.Question is,how long should I leave the slab to cure before drilling into it?
Thanks,
Mark.

 

[MoonRise]

In general, concrete is -supposed- to reach its 'rated' strength by 28 days after pouring. YMMV.

Sole plates can usually go on before then, but you could just ask your local concrete supplier or the local town/county/village building department as to their recommendation. Also, there may or may not be required building inspections along the way, again you should already have this info from the local building department/inspector if such building permit/inspection stuff applies to you.

Also note that wood in contact with masonry is usually required to be rot/insect resistant (at least around here). Plain wood in contact with (damp) masonry will rot or get eaten by insects like termites or carpenter ants.

 

[Mark H]

Thanks MoonRise.I'll contact the supplier tomorrow.Only thought about it this evening.
The reason I ask is that our local builder said they fit sole plates after a couple of days by nail gun.I was concerned that using an expanding bolt in green concrete would be a big mistake!
There's no requirement for inspection in my area as the building is under 30 sq mtr floor space,well,it will be when the drywall is fitted!
With regard to the sole plate,I'm fitting a damp proof course between it and the concrete so,I should be o.k.
Thanks again,
Mark