Site layout planning is a complicated issue because of the vast number of t
rades and interrelated planning constraints. To unfold its complexity, this
paper aims to confine the study to a particularly defined area of construc
tion: the structural concrete-frame construction stage of public housing pr
ojects. In this study, optimization of the tower crane and supply locations
is targeted, as they are the major site facilities for high-rise building
construction. A site layout genetic algorithm model is developed and a prac
tical example is presented. The optimization results of the example are ver
y promising and demonstrate the application value of the model.