I have two cinder block retaining walls that we are getting ready to wire and resurface. The walls have no weep holes and I can't find any instructions on how to install them into a completed wall. We know there are areas where water is building up behind them. We have installed drain basins along the length behind them and are diverting as much of the water away from them as possible. My thought is to drill small holes at the base of the wall at the concrete level and insert a pvc pipe for the weep hole, but not sure that is correct? I am concerned that they will just get clogged with the dirt from behind the wall? The walls are 20' L x 7' H and 40' L x 11' H, so digging behind them is not a easy solution. Any advice would be appreciated !!!

Put a "header" board, (at least I think that's what it's refered to) above my back door and into the brick as a foundation for a small overhead porch roof I'm building. Got it attached, but noticed the ends have a 1/2"-1" warp outward. I used shields/lags about 2 feet inward on both ends of a 2x8. (Should have went closer to the ends). It's too late to drill the concrete and put shields/lags in as the porch is 80% done. Is there a fastener or something I can use that will go through a 2x8 and into the brick both? Thanks