Drilling hole on structural slab
Drilling hole on structural slab
(OP)
Hello Palz
Im trying to have a new partition wall on a condo unit on the fifth floor, I have to drill on the floor slab 12 mm diameter and 4" depht apaced at 60 cm apart for my vertical reinforcement for CHB partition.. the structure is 28 storey high, no details for the structural design what so ever being purnished but thrugh inspection I found it a flat plate desind slab.
Any idea and sugestion is much appreciated.
thanks in advance
fratrowie





RE: Drilling hole on structural slab
As a caution, many high rises are built as post tensioned slabs, which adds a huge complexity to the problem.
RE: Drilling hole on structural slab
Just to add on what he said. The reinforcing on the near side of a slab can often be located by a cover meter.
I you can see the edges of the slab you may be able to tell if it is a post-tensioned slab. If there are grouted pockets along one of the edges then it is post -tensioned if not then it probably isnt. Note that you will need to check all edges as only one end of the tendons will be grouted.
As far as cutting tendons, this is a definate no no. Specift that all holes are to be drilled by a regular percussion drill and that no diamond drilling is allowed. I have been told by reliable sources that percussion drills cant cut through the tendon steel.
This may also work for reinforcing.
csd
RE: Drilling hole on structural slab
RE: Drilling hole on structural slab
You state that you don't have any structural details - I'd recommend you do everything you can to find the original plans prior to drilling.
RE: Drilling hole on structural slab
thanks to all!!
Well, I will start from your ideas and suggestion...In a week I think I will start my task.. again thanks a lot. More power.
Regards;
fratrowie