My contractor used cement board to level the floor.  

@Dan Ward I replaced some rotted wood on my bay window with cement board siding, and replaced the trim around the cement board panels with PVC trim.  

Cement board siding, hardwood floors, granite, tiled showers, etc.We're saving money on not having to excavate the existing foundation (we're expanding it though) and not having to connect utilities, but we're spending extra money on demo and removal or debris.

The proper replacements are cement-filled steel.The sniff test in the basement is key. 

If you can't locate your tank go to the local health dept they should have the dimensions on file, ask them for the "As-built" plan your contractor who installed the system should have filed with the town upon completion of the work.If your tank is any deeper than 12" into grade you may want to add what they call a "riser" with cover over each cement cover of the septic tank, or at least where the pipe enters the tank and exits the tank. 

Currently getting ready to sell my primary residence and the furnace and hot water heater need replaced.The guy doing the job won't touch the pipe that takes the exhaust from the basement out the attic since it is an asbestos wrapped cement pipe.Anyone have any expertise with these?

It can also be hard to get simple items you may take for granted such as name-brand clothing, outdoor gear or even hiking shoes, bags of cement, other building materials, tools, auto parts, boat motors, and any beer besides Belikin.

If the walls have been knocked down and the drains are full of cement, its your problem.

Old-school masonry - be it foundation, bricks or blocks - were usually made of only lime and sand, no cement, their proportions have to be exact and they cured very slowly and could be adversely affected by water exposure early in the curing process.

and in Philly they aren't boarded they are cemented in Look like the worse tenements you would see in Cairo at least what I saw in Cairo..