+ Shear Reinforcing Elements

Shear reinforcing element QE

Simple, fast and safe - perfectly suited for members subject to shear stresses
Querkraftelement web scaled

Shear reinforcing elements QE are used as shear reinforcement to increase the shear resistance of slabs and walls. With the positioning of the elements between the reinforcement layers, installation is particularly simple and quick.

Shear reinforcing element QE

Benefits

  • Up to 70% time savings compared to stirrup reinforcements
  • Easy installation without time-consuming inserting
  • Dual function as shear reinforcement and spacer
  • Common element heights readily available in stock
  • Certificates and registration in Austria and the Czech Republic
  • Design is based on EN 1992-1-1
  • Increase of the shear resistance of slabs and walls
  • For slab heights from 200 to 750 mm
  • Concrete strength class up to C40/50
  • ALLPLAN and Revit elements for simple and efficient planning

Shear reinforcing element QE

Application

BNL2361 scaled

Shear reinforcing element QE

Composition

QE EN

Shear elements QE are U-shaped mesh-like or ladder-like reinforcing elements, which are industrially produced by electric resistance welding similar to the production of reinforcing wire fabrics. The wire used for both the chords and the vertical bars is reinforcing steel B500A according to ÖNORM B 4707. Shear elements QE are especially suited as shear reinforcement at the support of floor slabs resting on walls or beams and as shear reinforcement of foundation slabs.

Shear reinforcing element QE

Types

Shear elements QE come in heights from 100 mm to 600 mm.

The most commonly used types are available in stock.

TypeHeight
hQE		Chords
⌀		Vertical barsElementsaSW,QE2)
⌀DistanceWidth1) bLeg length lWeight
mmmmmmmmmmmmkgmm2 / (m * Elem.)
QE 100 
QE 120 
QE 140 		100
120
140		6
6
6		6
6
6		50
50
50		100
100
100		550
550
550		1,53
1,63
1,74		1131
1131
1131
QE 160 
QE 180 
QE 200 		160
180
200		6
6
6		6
6
6		50
50
50		100
100
100		700
700
700		2,32
2,45
2,57		1131
1131
1131
 QE 220 
QE 240 
QE 260 		220
240
260		6
6
6		6
6
6		50
50
50		100
100
100		850
850
850		3,26
3,42
3,57		1131
1131
1131
QE 280 
QE 300 
QE 320 		280
300
320		6
6
6		6
6
6		50
50
50		100
100
100		1.000
1.000
1.000		4,37
4,55
4,73		1131
1131
1131
* QE 340 
QE 360 
* QE 380 		340
360
380		6
6
6		6
6
6		50
50
50		100
100
100		1.000
1.000
1.000		4,91
5,10
5,28		1131
1131
1131
* QE 400 
QE 420 
* QE 440 		400
420
440		6
6
6		6
6
6		50
50
50		100
100
100		1.000
1.000
1.000		5,46
5,64
5,82		1131
1131
1131
QE 460 
* QE 480 
* QE 500 		460
480
500		6
6
6		6
6
6		50
50
50		100
100
100		1.000
1.000
1.000		6,01
6,19
6,37		1131
1131
1131
QE 520 
* QE 540 
QE 560 		520
540
560		6
6
6		6
6
6		50
50
50		100
100
100		1.000
1.000
1.000		6,55
6,73
6,92		1131
1131
1131
* QE 580 
* QE 600 		580
600		6
6		6
6		50
50		100
100		1.000
1.000		710
7,28		1131
1131

QE-Types marked with * are available on request.

1) Width of elements refers to the centre distance of vertical bars in cross direction.

2) The required amount of shear reinforcement a SW,erf (e.g. based on a FEM calculation in accordance with ÖNORM EN 1992-1-1 with fyk = 500 N/mm2) has to be increased by the factor 1,0/0,9. Ved must not exceed 0,45 x VRd,max. The angle θ between the concrete compression struts and the beam axis perpendicular to the shear force is limited by 1,0 ≤ cotθ ≤ 1,7.

Shear reinforcing element QE

Installation / Placement

QE section foundation slab en
Shear elements QE are placed between the upper and lower layers of flexural reinforcement and, thus, they also serve as spacers. The round section of the U-shaped shear elements QE is placed along the face of support (e.g. inner edge of wall). They are placed in parallel to the main flexural reinforcement (in accordance with the truss model for shear force).
QE section floor slab en
Shear elements QE are manufactured in various heights and lengths. The height of the shear elements QE results from the depth of cross section minus the concrete covers and the thickness of the lower and upper reinforcement layers. Shear elements QE can be used in slabs or walls with a depth of cross section of up to 750 mm. Maximum concrete grade is C40/50.
QE placement of shear element ground plan
When placed perpendicular to the face of support, shear elements QE are effective as shear reinforcement up to the final vertical bar. In order to extend the effective range of shear elements QE, additional rows of shear elements QE can be added.

Shear reinforcing element QE

Gallery

BNL9467
BNL9589
Baustelle QE scaled

Shear Reinforcing Element QE

Downloads

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