Here is an autocad dwg file for details of sewers bolsterz. a large pipe, usually underground, that is used for carrying waste water and human waste away from buildings to a place where they can be safely got rid of: a sewer pipe.
Construction detail dwg fi
Roof construction details
Wall construction details
Building Staircase Detail
Section plan detail dwg fi
Section of rib slab
Stair section detail dwg f
Concrete armed structure c
Detail of illumination pos
Construction details of cu
Foundation and column sect
Ground foundation plan lay