Fork head props

Props made with fork already welded to support the beam in the shoring system.

About GBM forked prop

Props made with fork already welded to support the beam in the shoring system. They're also known as BM-Bouwstempel and schroefstempel.

Fork head props manufactured according to the customer's ABOMA.

Also known as Bm-Stempel and Bm-Bouwstempel, they come in 4 models with different extension and capacity:

  • GBM 30
    extensible between 1,80 and 3,00 metres
  • GBM 36
    extensible between 2,10 and 3,60 metres
  • GBM 41
    extensible between 2,40 and 4,10 metres
  • GBM 50
    extensible between 2,90 and 5,00 metres

Below are the features of GBM fork head prop:

  • hook bevelled at the ends: easier to insert into the holes thanks to the ergonomic shape;
  • anti-shearing system: the greater length of the inner pipe with respect to the inner one enables guaranteeing an at least 10 cm difference between the two so as to prevent injury;
  • inner holes obtained using machines capable of perfectly machining them or by means of a milling system which obtains turnings on the surface of the pipe: both ways enable guaranteeing the complete absence of burrs near the holes;
  • inner pipe anti-slip-off system, so as to prevent the pipe from inadvertently slipping off thus guaranteeing wholeness and safety when laying down and displacing at the worksite;
  • hot-dip galvanization, with guaranteed minimum thickness of 50 microns.

Upon request:
  • sticker customised with customer's logo, bearing information on capacity and maximum extension;
  • quick release system, an accessory that guarantees release of the prop under the load by just hitting with the hammer to quicken and simplify the release procedure as well as reduce the operator's effort.

Beware: the capacities indicated in the table always refer to the capacity of the single post shore. Higher capacities can be achieved by binding, gate-like systems or pipe-coupling systems. The gate-like system is a temporary structure suitable for creating a loading tower. Binding the props in fours enables maximising the capacity. The pipe-coupling system provides for a pipe above and beneath with couplings, it is the same figure of the gate, which is more economic though less quick.
GBM - Puntello con forca Catasta puntelli con forca Catasta puntelli con forca 2

GBM Fork head props loads table

We - at GBM - manufacture 4 different models of Fork head props (GBM 30, GBM 36, GBM 41, GBM 50). They are classified according to maximum extension and capacity. Below are their technical features.

Dimensions table

Inner diameter mm 48,30
Thickness mm 3,20
Outer diameter mm 57,00
Thickness mm 2,50
Plate mm 120x120x8
Fork thickness mm 8
Hook diameter mm 15

Extension Model

GBM 30 GBM 36 GBM 41 GBM 50
(metres) (kN) (kN) (kN) (kN)
5,00


8,20
4,90


8,60
4,80


8,90
4,70


9,30
4,60


9,70
4,50


10,30
4,40


10,80
4,30


11,30
4,20


11,90
4,10

11,30 12,40
4,00

12,00 12,90
3,90

12,70 13,40
3,80

13,40 14,40
3,70

14,10 15,40
3,60
12,50 14,80 16,40
3,50
13,30 15,50 17,40
3,40
14,20 16,20 18,40
3,30
15,00 16,90 19,30
3,20
15,90 17,60 20,30
3,10
16,70 18,50 21,30
3,00 16,50 17,50 19,30 22,30
2,90 17,40 18,40 20,20 23,30
2,80 18,30 19,20 21,10
2,70 19,20 19,80 21,90
2,60 20,10 20,40 22,80
2,50 21,00 21,00 23,60
2,40 21,90 21,70 24,50
2,30 22,10 22,30

2,20 22,20 22,90

2,10 22,40 23,50

2,00 22,50


1,90 22,70


1,80 22,80


Would you like to view the full GBM props catalogue?

Download the full catalogue in pdf format (7 MB)

Or go straight to the online version.

GBM Shoring Props: Data Sheet

GBM shoring prop specifications, data sheet & capacity tables: maximum extension, minimum extension, inner tube, outer tube, weight, compression... If you want to know it all, just...

Download the datasheet of our shoring props (PDF / 0.1 MB)

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