Before concreting of the foundation slab, the type Kab seal band with the swell profile is affixed directly to the upper reinforcement lattice. The attachment is executed using type VSB installation clamps in the form of a bent bar having the shape of the Greek letter Ω (omega), using at least 2 pcs/r. m. of band. Their special shape prevents later water penetration at the mounting spots.
The mounting shackles must be joined permanently with mounting wire to the slab rebar. After concreting of the bottom slab, the type Kab seal band with swell profile is embedded within concrete at a depth of approx. 30-50 mm. The concrete mix that may at that time cause unevenness or flaws, needs to be evened out. The part of the band protruding outside of the slab surface outline needs to be concreted within the wall in the second phase of concreting work.
A decisive advantage of using type Kab seal bands with swell profile is their size and weight. They take up little space during storage, and their low weight facilitates quick and easy installation. The flexible material, of which they are made, allows one to protect designed structures having circular form or various wall arrangements. At corners of buildings where Kab bands were used, the person unfurling the band must provide it with the shape that the wall takes, through appropriate bending.
|Step 1. Layout of the band on the reinforcement lattice.|
|Step 2. Attachment of assembly clamps.||Step 3. Band joining.|
|Step 4. Foundation slab concreting.||Step 5. Wall concreting.|
In work conditions of installation of Kab bands at the construction site, it often becomes necessary to join subsequent band segments. This can be done in two ways:
by using type KS system assembly rails,
by welding, using a small welder's axe or a hot air blower.
Joining bands using type KS assembly rails can be done at any construction site and in any atmospheric conditions allowing normal work. The rail, specially designed for assembly work, is a set of components joined together by screws. The component is made up of two flat compression profiles and three bands of swell material joined by screws with wing nuts.
Before a joint is made, one has to make openings in the ends of the band rolls to be joined, either by a centre punch or by drilling. One can use, during this, a metal flat profile as a matrix to position the holes appropriately. The ready joint is a layered component made of the type Kab band and bands of swell materials between them, and flat profiles on the outside (see figure below).
More experienced installation specialists may join bands by welding using electric welders. Before the type Kab seal band ends are gently melted a bit, the swell profile needs to be extended a bit out of the lower band end. After the ends of the rolls to be joined are heated, until the flexible material flows out at the axe's edge, they must be pressed on one another.
After making such a joint, the swell component must be put in its place. A different method of welding seal bands with swell profiles is executing overlay joints with at least 5 cm in length. During this operation, one has to take care to precisely melt and join together the ribbed band sections.
|Joining bands using an assembly rail
||Joining bands by welding an overlay section|