The NPS® ZENITH device is a column centring system normally employed with the NPS® Top Down method of constructing from top to bottom.
NPS® ZENITH is designed to adjust plano-alimetric column placing with millimetric precision, keeping them in position, through a tightening system, while the continuity cast cures. In this way, the NPS® System columns can be previously dug into the ground during the earth moving phase. Therefore, it must be realised before the deck, contrary to all other lateral baffle creation systems, and then proceed with the dig.
NPS® ZENITH , designed and covered by Tecnostrutture s.r.l. industrial property, it is composed of a rectangular shaped positioning footing, a hexagonal shaped member, a regulator, a Cardan joint, and a target antenna; it conforms to NTC 2008 in force.
NPS® ZENITH must be installed at ground level. Since the height of the structure is established at this time, it is essential to keep under control any possible subsidence of the ground where the device will be placed.
Preparation of the diaphragm and column excavation
Casting the pillars with Zenith and pouring of foundations
Operation of the NPS® Zenith
Position the device, connect the sighting antenna and Zenith fitting to the top of the pillar
Lower the column into the well until the Zenith fitting is positioned over the rectangle
Beam laying level 0
Excavation and beam laying level -1 and level -2
Trenching and pouring of foundations
Ascending with completion of slab level -2
Ascending with completion of slab level -1
Rise with completion of slab level 0