Temporary Concrete Connections
This method is easily removable and won’t spall the concrete.
Here’s a method for temporarily attaching wood to concrete. It requires a 3⁄16-in. hole bored into the concrete, and then you put a scrap of 14-ga. electrical wire in the hole before driving an ordinary #8 by 3-in. screw. As you drive the screw, it cuts into the copper and plastic sheathing and wedges tight. The bonus is that it’s easily removable and won’t spall the concrete.
—Mike Gandy, Victoria, B.C.