has been involved in the development and implementation
of the
"Lift-Slab" methodof construction for a period of more than forty years.
This section provides a step-by-step graphic
explanation of the "Lift-Slab" system principles,
explaining capabilities and major advantages of the
system, and including photographs of a project in process.
The "Lift-Slab" system of construction is a system of mechanically elevating horizontally inclined partitioning slabs on pre-positioned columns
Diagram #1 shows a pair of columns with five slabs prepared at ground level
Diagram #2 shows two lifting boxes mounted, one on each of the two columns, and a single slab elevated to the first floor level
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Stage 2
Simple and Time Saving
The slabs are easily fabricated on site at ground level and systematically elevated to their required positions
This graphic process description shows two columns at each progressive stage
The system is capable of accommodating sequential single slab lifts on up to 40 columns, a lifting box mounted on to each of the 40 columns
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Stage 3
Central electronic Control
The slabs are sequentially lifted and easily secured in position, creating flooring at the required levels
Central electrical control console regulates the lifting process and maintains horizontal alignment and flatness for slabs each weighing up to one thousand five hundred tonnes
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Stage 4
Simple Pinning System
The Initial maximum height of the columns is five storeys
The lifting boxes are sequentially raised to higher positions to enable the partitioning slabs to be lifted to the required levels
The lifting boxes and the partitioning slabs are held in their relative positions by a simple pinning system
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Stage 5
Further expansion
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The system is easily expanded to create higher rises The vertical columns are extended in stages, increasing the height in multiples of up to five storeys The first five slabs are elevated further to make room for the subsequent five slabs Buildings of up to thirty storeys have been successfully constructed using the "Lift-Slab" method of construction |
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Stage 6
Flexibility
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When all slabs have been fabricated and lifted to pre-determined positions, the final positioning takes place starting from the bottom and continues upwards Diagram #12 shows three partitioning slabs in their final position, higher slabs ready for further elevation In the case of higher rise buildings pre-fabrication of slabs is carried out at a higher level making the first floors free for subsequent construction works |
Stage 7
Final Positioning
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At the completion of the Lift-Slab erection process, the Lift-Boxes are simply lifted from the tops of the columns Special design parameters allow for generous spacing between columns After completion of the Lift-Slab erection process columns may be eliminated in special cases to provide larger unhindered floor spacing |
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Stage 8
High Rise Benefits
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