Patent CA-1277153-C (CA)
Title: Apparatus and process for the construction of monolithic ceilings
Inventor: NAGY ISTVAN
IPC: E04G11/56
Filed: 1986-05-30
Granted: 1990-12-04
Abstract: A b s t r a c t The invention relates to an apparatus for the construction of monolithic of multi-level or pillar- framed buildings having suspended ceilings, said apparatus is provided with surface- and in given case working level- forming formwork  shell surrounding the monolithic concrete form- space of the ceiling, formwork bearer supporting the formwork shell, furthermore actuating mechanisms, e.g. lifting units for lifting and lowering the formwork bearer, the actuating mechanisms, e.g. lifting units are in force-transmitting connection directly or indirectly with a certain part, e.g. pillars of the temporary or permanent vertical load bearing structures of the building, load bearing elements, e,g. bear frame, connecting member, etc. are built in between the formwork bearer and the lifting units.        The essence of the apparatus lies in that the units /7/ are interconnected preferably with storey-high intermediate members /8/ forming forced trajectory For the formwork bearer /3/, furthermore the intermediate members /8/ are provided with releasable hinged bearers /9/ fixed to the vertical load bearing structure /1/ temporarily holding and temporarily releasing the inter-mediate members /8/ and allowing the inching movement of the lifting units /7/.        The invention furthermore relates to a process for the construction of monolithic ceilings, particularly for monolithic ceilings of multi- level or pillar-framed buildings having suspended ceilings, where the ceilings are built on surface- and in given case on working level-forming formwork shell surrounding the form- space of the ceilings, the formwork shell is supported with formwork bearer, lifted and lowered by actuating mechanisms, e.g. lifting units along vertical load bearing structures, e.g. pillars of the building built prior?to production of the ceilings, and the ceilings are built in the order of moving downwards supported by the vertical load bearing structures, The essence of the process lies in that in the first phase of the construction, in addition to the vertical load bearing structures, e.g. pillars, the core of the building, e.g.  staircase or elevator shaft serving for the horizontal stability, in given case the structural parts suitable for suspension of the ceilings are also built up, then in the second phase of the construction first the formwork shell /4/ and the supporting formwork bearer /3/ are assembled and lifted along the pillars /1/ to the level of the uppermost ceiling /2/, where it is accurately adjusted, and fixed for example with temporary supporting bars /lo/, then the ceiling is built, upon reaching the strength of the concrete for removal of the formwork, the temporary fixing is released and the form-work bearer /3/ is lowered to the level of the next ceiling /2/ with the aid of lifting units /7/ inching preferably along storey- high intermediate members /8/ serving for forced trajectory of the formwork bearer /3/, then after adjustment in the new position it is fixed again for example with temporary supporting bars /lo/, followed by moving the intermadiate members /8/- serving for forced trajectory- below the ceiling to be built with the aid of lifting units /7/, the sequence of processes is repeated cyclically until the last ceiling /2/ is completed, finally the formwork bearer /3/ is dismantled and the aids used for its actuation are removed,