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  1. Adding mass to a subfloor - am I about to do something stupid?

    I have an under / over duplex with very poor sound isolation between the 2 units. The building is a 1970s wood construction, with 2x10 joists, 16" span and no insulation between the floors. I am completely renovating the upstairs unit and want to reduce both impact and airborne noise, which...
  2. Building codes for stairs in MA

    Building & Construction
    Hi, I need to build stairs in somewhat confined space. I want to be certain of current code requirements in MA before I start. I've heard there were recent (2010?) changes on this. Can somebody please explain what is the min tread depth, max riser height, min stairs width? Also, is it allowed to...