I'm looking at two options to cement a bench.
1) I dig the 3 foot hole, pour cement…etc
2) I use a cement anchor. How does the cement anchor work? Is it as follows: create a mound of cement that extends into the ground and juts out slightly. On the bench's legs attach a metal border through which anchors get drilled? What type of drill would wokr, if I have the correct understanding?
Best Answer
Depends on the type of anchor. Some cement anchors are similar to your average screw, except the threads are wider. Other cement anchors are similar to a toggle screw, and can be much larger. What follows is how to fasten a concrete anchor that is similar to a screw.
You will need to drill a pilot hole with a concrete drill bit. The packaging will likely say what size bit you need, but a rule of thumb is for the pilot hole to be narrower than the threads of the screw (in this case, the anchor) so they can grip the surrounding material firmly. A hammer drill will work well for your pilot hole, though I managed with the 18v dewalt drill/driver for 1/4" anchors. Then you drive your anchor using a drill. It helps to drill the pilot a bit deeper than the length of the anchor. This will ensure the anchor will drive cleanly.
Not sure about your "Mound of cement" statement.