Process for setting up the shuttering for a building wall, and setting block to be used in this process

Setting block and process for setting up the shuttering for a building wall involving accurate positioning of the wall shuttering with an upwardly protruding positioning rod case in an underlying wall and after the floor shuttering has been placed, the placing the setting block so that its vertical bore grips around the rod.

The invention relates to a process for setting up the shuttering or 
formwork for a building wall. 
In buildings with continuing concrete floors, especially the setting up of 
the wall shuttering in line with the concrete walls of the floor beneath, 
on the cast floor causes major difficulties. In the first place, much and 
sometimes complicated measuring is necessary for finding the correct 
position, whereas maintaining these positions and manoeuvring with the 
wall shuttering or the parts thereof is very difficult to carry out on the 
draughty floors of buildings under construction. 
The purpose of the present invention is to solve this problem in a simple 
way, in that for an accurate positioning of the wall shuttering a 
positioning rod, which protrudes upwards, is cast in the underlying wall 
or suchpart, and that after the floor wood form has been placed a setting 
block is placed on this shuttering, which setting block by a vertical bore 
therethrough grips around this rod. This process offers the possibility to 
place the setting block on the floor shuttering at the place of the 
underlying wall and to use it as a guide for the wall shuttering to be set 
up, the setting block being centred on the positioning rod, which may 
consist e.g. of a reinforcement rod, and further measuring becoming 
superfluous. 
In order to be able to correct small position differences at the topside of 
the underlying walls, it is possible according to the invention that the 
central bore grips with a tolerance around the positioning rod and that 
the setting block is fixed on the rod by means of a rudder and a filling 
plate. By tightening the nut, the undoing of a once made correction will 
be impossible. The nut may be self-tapping. 
For carrying out the process according to the invention, use can be made of 
a setting block, which consists of a concrete guide block to be placed on 
the floor shuttering, which block is provided centrally with a cylindrical 
bore, which can be covered by a plate. 
It will then be possible to let the guide block be one with the floor to be 
cast and to that end, according to the invention, will preferably have at 
both sides a horizontal shoulder surface, the horizontal distance between 
these shoulder surfaces corresponding or approximately corresponding with 
the thickness of the wall to be cast, and the vertical distance to the 
underside of the block corresponding or approximately corresponding with 
the thickness of the floor to be cast. The shoulder surfaces enable an 
easy and accurate positioning of the wall shuttering, whereas they also 
indicate the exact floor height and thus can be used very efficiently for 
levelling the floor. 
Preferably the upper end of the underlying concrete wall will already be 
above the level of the floor shuttering. To this end, it is possible 
according to the invention that a rectangular or almost rectangular recess 
is provided at the underside of the guide block, by which recess the guide 
block grips around the underlying wall. This embodiment also enhances the 
fixed position of the guide block.

The invention will be explained hereinafter with reference to the drawing, 
in which, by means of example, an embodiment of the guide block according 
to the invention is shown. 
The shown guide block 1 consists of a rectangular block of concrete made 
with the required compression strength. The upper corners have at both 
sides a rectangular recess 2, of which the vertical walls 3 are provided 
at a distance from each other, which corresponds or almost corresponds 
with the thickness of the wall to be cast and which constitute a wall 
beginning or guide. On the horizontal surfaces 4 of these recesses there 
is enough space, if necessary, to support the wall shuttering. 
The vertical lateral surfaces 5 of the guide block have a height, which 
corresponds or almost corresponds with the height of the floor to be 
casted. The block 1 centrally has a cylindrical all-through bore 6, which 
at the underside debouches into a rectangular recess 7, which at least 
spans the outside dimension of the underlying wall 10. However, the recess 
will preferably fit largely around the roughened topside of the wall, 
which protrudes some centimetres above the floor shuttering. 
The total length of the shown guide block, for a floor thickness of 18 cm 
and a wall thickness of 20 cm, may be e.g. 35.8 cm by a height of 27.8 cm 
and a thickness of 9 cm. The diameter of the central bore 6 is e.g. 4 cm. 
For using the guide block, an upwards protruding positioning rod 8 is cast 
in the topside of the already cast wall. After the encasing of the floor, 
where the floor shuttering 9 will usually continue up to the sides of the 
vertical wall 10, a guide block 1 is placed, possible with adding of some 
fresh concrete, at the topside of the wall 10 on the floor shuttering 9 on 
this positioning rod in the indicated way. Then a follower 11 is placed on 
the rod 8 and the block is fixed on the rod by means of a self-tapping nut 
and clamped against the floor shuttering. Possible deviations of the 
topside of the underlying wall or of the positioning rod can be corrected 
by sliding the block, of which the bore 6 fits largely around the rod 8. 
Thus a number of these guide blocks are anchored on this wall in the 
longitudinal direction thereof. 
Subsequently the floor is cast, during which the blocks are embedded in 
this floor and the shoulder surfaces 4 can be maintained for the 
levelling. In connection with the expansion of the shuttering as a result 
of the wet concrete, the height of the vertical surface 5 is chosen 
slightly smaller, e.g. 2 mm, than the floor thickness, so that the floor 
will not become unnecessarily thicker. 
After the setting of the concrete, the wall shuttering can be set against 
the vertical surfaces 3 of the wall beginning. To this end, the distance 
of these surfaces 3 has again been kept somewaht smaller (e.g. again 2 mm) 
than the wall thickness, for the above reason. 
In this way both an accurate centering and an easy and correct setting of 
the wall shuttering at the right distance is assured, whereas the guide 
block also very much simplifies the maintaining of the floor thickness and 
the finishing of the floor surface, saves concrete, respectively.