152 Washbasin and bathtub fixtures washbasin mounted on brackets to blocking or stud wall end profile of bathtub overflow washbasin outlet exposed drainage piping usually chrome plated or brass subflooring cut to receive drain piping drainage piping from washbasin connected to soil stack drainage piping from trap connected to soil stack holes drilled in bottom plate and subflooring for hot and cold water piping Wherever plumbing reduces insulation or affects an air barrier, provide additional insulation on the exterior and ensure that the air barrier is continuous and uninterrupted. Connect plumbing fixtures and accessories after the installation of the interior finish has been completed. Figures 151 to 154 show typical plumbing arrangements for wood-frame construction. Check local or provincial plumbing requirements. 153 Toilet fixture drainage piping from washbasin bottom plate and subflooring cut for stack toilet toilet flange secured to subfloor drainage piping from bathtub soil stack