The XII-TKM type series primarily serves to transfer bending moments and shear forces (interaction). In case of internal forces with alternating signs, XII-TKM/G ribs must be used. XII-TKM/E ribs are used with precast concrete floor slabs to prevent a collision of the ribbed compression chord with the precast concrete floor slab.
Example of Candilever balcony slab with XII-TKM/G ribs:
The XII-TKA type series is primarily suitable for transferring shear forces for applications in supported balconies, recessed balconies, parapet walls and different types of prefabricated connectors. Installation of the XII-TKA V1 or V2 type series also enables the transfer of bending moments and shear forces for level changes and cantilever slab connections to walls (up to a max. of 5 ribs per 1 m element).
Example of recessed balcony with XII-TKA/G ribs:
The XII-TKF type series is used as split element primarily for unsupported cantilever balcony slabs, especially for the requirements of the prefabricated concrete elements industry (precast slab elements). One part (the compression chord) is installed in the precast slab element in the precast concrete factory; the second part (the tension chord) is then put in place on site.
Candilever balcony slab with split XII-TKF/E ribs:
The XII-AT/2 Thermokorb is a load bearing connector providing thermal insulation and is used for the transfer of axial forces, shear forces and bending moments between parapet wall and floor slabs. The distance between elements is chosen according to the prevailing structural and/or design conditions and can be determined using the design program “Thermotool”. The thermal insulation between adjacent Thermokorb elements must be provided on site.
Example of installation XII-AT/2 for a Parapet wall connection: