I've got a concrete slab front porch that is a bit low in the center, enough so that puddles accumulate there when it rains. The puddles by themselves are not a problem. Over time, the areas where the puddles accumulate causes a thin film of dirt/mildew/who knows what else. This spot is not only ugly and a pain to keep clean, but it is very very slick. I fear for the mailman's safety since he has to walk across that part of the porch rain or shine. I haven't been under the house to check to see if the porch slab is sitting on dirt. The porch is at least 3.5 feet off the ground, so there's room for additional crawlspace. However, I'm no mason, but I can't imagine a slab with that much square-footage being suspended by anything short of some kind of specially engineered structure of some kind. It's old, and there aren't any cracks, so, since I don't know any better I'm going to assume it is a dirt filled situation, for now. The only solution I can come up with is to install a drain at the lowest point, directing the plumbing towards the front of the porch (shortest distance to run pipe, and hidden by bushes.) If a drain is the proper/best course of action, is there a way to cut a hole through the slab using something other than a stout hammer drill and masonry chisels? I'm pretty confident I can do it that way, but my primary goal would be to make the drain look like it has always been there. I'm afraid I might chip too much of the surface and have to patch around the finished drain. What about a hole-saw big enough to cut through the slab? I'm pretty sure that would do the trick, but I'm on a pretty tight budget. Any tips on installing the pipe correctly without access from underneath would be much appreciated as well. Thanks, Jeffrey

I need to install a gas line (black pipe) to go into house whats the best way to make a hole on a brick house?