ONE PIPE SYSTEM Why one pipe system is less convenient? - A single pipe for soil waste and a single pipe for vent so there are chances of blockage which can reduce flow rate. - At the bottom of high rise building how does one control the pressure inside the pipe? - By providing pipes with enough thickness to resist the pressure . When there is a blockage in the soil pipe ,will the waste get into vent pipe and how it get removed? - The waste will get into the vent and can be removed by giving door bends at the bottom. BUNDLED TUBE STRUCTURAL SYSTEM · Why I beam is efficient than other steel section ? ...