I am going to install a downspout drain and connect it to a corrugated pipe that connects to the storm drain. The corrugated pipe was installed recently during an ongoing road project and runs under the sidewalk and 4 feet into my yard. The downspout to the corrugated pipe is about 30 feet and my plan is to use 4 inch solid pvc and use a connector to the corrugated pipe. I considered using solid corrugated pipe, sd35 green sewer pipe or coex drain pipe due to cost, but solid pvc I believe is the right way to go. Also to note, I live in the PA. Here are my questions: 1. From the downspout, should I used a drain basin or directly connect to pVC pipe. I am concerned aboout debris from the gutters entering the pipe. 2. Since I live in the PA, should I use a more flexible pipe or stick with 4 inch solid pvc. 3. How deep should I bury the pipe and should I put a few inches of gravel on the bottom and tamp or lay it directly on the soil. 4. At the pvc joints, I've read that after they have been connected with pvc cement, the joint should be on a bed of gravel at a minimum or encased in cement. Is either of these correct? 5. Should I install a cleanout? If yes, where? Now for a bit of a wrinkle, the crew that installed the corrugated pipe from the storm drain and 4 feet into my yard used a pipe that has slots in it. I questioned the engineer about this and he stated the this is all they use on the job and there are no concerns. Should I be concerned? Any way to mitigate any possible issues? Thanks for your replies

So I have this attached carport that was built long before I bought my house in a way that is not great. It's flat with a rubber roof that has begun to sag from snow load and is leaking through. It has standing water and because of the sag and the fact that they used some kind of soft fibrous material between the decking of the roof and the rubber, it has a lip on the edge preventing water from being able to escape. I'm in a real jam because this is something that has to get fixed this summer and I'm super strapped for cash. I've had some people look at it, friends, family, contractors and gotten a few Ideas but I could use some more suggestions. One person said the cheapest thing would be a silver roof waterproofing liquid. I worry that would still leave water standing and because the rubber was pulled tight originally to create a pitch, there are spots where it doesn't sit against the roof beneath. I thought it would be best to try to replace the roof by removing the rubber and replacing or maybe removing all the decking, then building it up just to get a little pitch for runoff. Decking that and laying some roll on roofing. Because of all the angles though it seems a bit tricky. Here are some photos, any help or suggestions would be great. Thanks. [ATTACH]1082[/ATTACH][ATTACH]1083[/ATTACH][ATTACH]1085[/ATTACH][ATTACH]1086[/ATTACH][ATTACH]1087[/ATTACH]