7.2 Prefabricated Construction Systems adopted in Hong Kong

d) SStorage and pre-installation handling, again, requires extraworking space.e) IInstallation of precast elements on site requires carefulplanning and extra cranage provisions.f) HHandling and assembly of heavy precast members, posescertain safety problems and increase risk both to humanoperatives or to the semi-completed structure itself.g) TThe structure under assembly in its semi-completed statemay cause difficulties in making access into the work spot.h) DDefective connections may result to cracks and waterleakage which will create further maintenance problems.