A basic element as punching shear and bond reinforcement for all semi-precast floor slabs with in-situ concrete topping of various heights

Figure: Betomax

Fig. 01: CLIXS 2.0 Punching shear reinforcement consisting of L-sheets with one or two hung-in stirrups

Figure: Betomax

Fig. 02: Input mask
of the design software from Betomax
Systems [3]

Figure: Betomax

Fig. 03: Download of a design example

Figure: Betomax

Fig. 04: Parts list of the linear elements and dimensions of the stirrup in the output of the design software

Figure: Betomax

Fig. 05: L-sheets as linear elements according to the parts list (Fig. 04)

Figure: Betomax

Fig. 06: Toothed rail for simple manufacture of the linear
elements at the site

Figure: Betomax

Fig. 07: Linear elements for an internal column under very high load placed parallel to the lattice girders

Figure: Betomax

Fig. 08: Reinforcing elements for a floor slab of great height installed collision-free

Figure: Betomax

Fig. 09: L-sheets embedded between the lattice girders

Figure: Betomax

Fig. 10: Storage of semi-precast floor slabs with CLIXS L-sheets cast-in without stacking aids

Figure: Betomax

Fig. 11: Installation tolerances for semi-precast floor slabs with CLIXS 2.0 reinforcement

Figure: Betomax

Fig. 12: Semi-precast floor slabs with L-sheets on a wall corner at the construction site

Figure: Betomax

Fig. 13: Semi-precast floor slabs with L-sheets for an internal column subjected to very high shear loading

Figure: Betomax

Fig. 14: L-sheets as punching shear and bond reinforcement with a range of embedded parts in floor slabs

Figure: Betomax

Fig. 15: Installation of reinforcement elements without interference of the L-sheets

Figure: Betomax

Fig. 16: Complete floor slab reinforcement with L-sheets and “CLIXSted in” stirrups

Figure: Betomax

The structural requirements for concrete structures have continued to increase in recent years. This report discusses use of the punching shear and bond reinforcement system for manufacture of semi-precast floor slabs according to the ETA 19/0310 European Technical Assessment ETA 19/0310 dated 21 February 2022 [1].

The structural requirements for concrete structures have continuously increased in recent years. Flat slabs and slender columns quickly present structural engineers with the problem of verifying their punching shear resistance. The bearing capacity of the concrete in flat slabs is very often not sufficient, and verification for punching shear succeeds only with use of a reinforcement system such as CLIXS from Betomax Systems.

This report describes the use of the punching shear and bond reinforcement system according to the ETA 19/0310 European Technical Assessment dated 21 February 2022 for...