I have an unfinished basement and want to build sturdy wood shelving along one or two walls. I assume I build a 2X4 frame along the poured concrete wall and attach at top to the wooden joists. However, I do not want to drill nail holes along the poured concrete walls and floor to invite leaks/cracking. Any tips? Anyone know of plans for this type of project as I am relatively new to home improvement but learn quickly if I have some guidance.

Greetings: We have a 30 year old house sitting on a 4 foot crawlspace. The crawlspace is covered with heavy plastic over the dirt. It is never wet. Over the last 30 years there has been a huge buildup of dust on the plastic. We have an open-duct furnace system, where there are ducts to the rooms from the furnace, but the returns are just open air returns in which the heated air goes down into the crawlspace.This keeps the pipes from freezing and the floors quite warm. The last few years there hasbeen a musty odor coming up thru the open return ducts from the crawl space.My husband says there are no vents to the outside because of the system we have,so we cannot close or open them. He believes that the dust in the crawlspace is causing the musty odor but we can't vacuum it because the plastic would be sucked into the vacuum hose. What is the solution? I have thought of placing a new layer of plastic over the old, but he is not too interested in that as he says it would be a huge job.We are very tired of the nasty odor, not to mention embarrassed when company comes. Help!! Thank you!! Marian