Erasmus Vernon Marc; University of Pretoria. Faculty of Engineering, Built Environment and Information Technology. Dept. of Construction Economics
(University of Pretoria. Faculty of Engineering, Built Environment and Information Technology. Dept. of Construction Economics, 2012-07-03)
Traditionally when new underground utilities were added to an area where other
utilities had already been installed, like a water reticulation network, and the new utility
was to pass by or cross the existing one the ...