THE STAGES AND PRINCIPLES IN BUILDING CONSTRUCTION :
Foundation
of the building is constructed in a way of conventional
or prefabrication. Then, the foundation is covered
and lean concrete is placed. This smooth surface functions
as a formwork for the mushroom, floor unit or waffle
type slabs of the building. The first slab is placed,
in such a way applying a separator onto the lean concrete.
Following its first setting is completed (the next day);
the second floor slab is placed onto it. Thus, each
floor constitutes the formwork of the next. Once all
floor slabs of the building are placed, installation
of the lifting equipment is made. All slabs are lifted
up to the level of the first floor as a package and
supported by using prefabricated R/C columns.
Following
the first slab installation, the lifting equipment are
prepared for the next step of lifting. The most installed
bottom slab from the package stays in its position and
the others are lifted up one-storey high in a package
form again. The operations following this (mounting
of columns and departing of the most bottom slab from
the package) are reiterated. During all these stages
continuing up to the all floor slabs of the building
were installed onto their places, measurements are taken
in different ways, against the earthquake and other
lateral forces.
The
lifting equipment may be synchronized specifically,
in order to lift altogether. Each lifting point is monitored
to provide 3 mm tolerance in a maximum, between any
two of them and the lifting equipment are synchronized
for that gap, when required. In the buildings constructed,
the lateral forces are being reacted by the cast-in-place
or prefabricated R/C shear walls.
Application
of the system in different areas:
Usage
capability of the lifting equipment in all kinds of
buildings and engineering structures, provides a great
advantage to the system:
a) Post-offices, hospitals, multi-storied warehouses,
mass or single houses, hotels,
b) Large-size steel fuel tanks,
c) Bridges or fly-overs,
d) Prefabricated reinforced concrete water reservoirs,
e) Seaports and breakwaters,
f) On the finishing of the large-size steel roofs
on the ground and lifting of them to their elevation.
