Void Forming Tube

PRODUCT INFORMATION

GP Spira-VOID tubing has, on account of its special corrugations. a very high radial stiffness well adapted for use as void former in concrete structures. It is also being used as culverts and forms for concrete piles, plinths and columns. As void former GP Spira-VOID tubes are used to reduce the crssection area and thus the weight of the structure. The weight reduction will amount to approximately 40% and thus produce a faverable effect on foundation, wall and slab construction.

APPLICATION

On many construction projects like apartment buildings, parking garages, office buildings, industrial buildings, bridges and docks, schools and hospitals, the introduction of GP Spira-VOID tubes will make it possible to use very long spans. The reduction in weight allows large areas and fewer columns which in turn will give technical economical and esthetic advantage.

CHARACTERISTICS

GP Spira-VOID tubes meet with structural design specifications for void former. It is a very rigid but yet light weight sheet metal tubing that without excessive deformatoin, withstands existing forces during the pouring of the concrete. The spira seam is tight and no water from the concrete will enter the tubeing. The low weight of the tubing makes it easy to handle.

  Dimensions

GP Spira-VOID TUBES are manufactured exactly to specification.
length is limited only by transportation. Standard diameter and thickness are shown in table below.Other dimensions are available on request.

CORRUGATIONS

END CONES AND END CAPS
To close the ends of the GP Spira-VOID tubing, end caps or end cones can be used. dimensions and total lengths are shown in the sketch below.

JOINTING SYSTEM
GP Spira-VOID tubes joined together by slip joint coupling.

NOTE : Mobile Machine is available where the quantities and location warrants