120 reinforced concrete girders were disjointed and dismantled by means of a wire saw. Here a wire saw was used for the sawing of reinforced concrete girders in the smallest possible space. The cross-cuts had cross sections of 0.90 x 0.85 m and a very high proportion of steel.

In the City Hall Centre of Bochum 3,000 t reinforced concrete ceilings, girders and columns were removed across 2 floors in order to create an atrium. Due to lack of time the works were carried out non-stop in day and night shifts.

In the municipal sewer system of Cologne cross-cuts up to a diameter of 2.10 m were constructed from the main sewer (dia. 3.60 m) to other sewers running in parallel by means of wire sawing and core drilling operations.

Concrete sawing and demolition works in an enterprise located in Dortmund.
Shows flush sawing (here flush to the floor) among other things.

In Hamburg a 4 floors high air-raid shelter was converted into a residential and office building. We received the order for the concrete sawing works. Our task was to form openings in reinforced concrete walls in the dimensions 2.50 m x 3.50 up to 4.50 m x 5.00 m. The wall thicknesses were 1.10 m up to 1.20 m.

BWE Duisburg - 2,800 m² asbestos slabs including the substructure and mineral wool insulation were removed and disposed of in a residential building in compliance with all corresponding regulations. Furthermore sawing off, demolition and disposal of 24 balconies built of reinforced concrete.

All services from a single source!
In an enterprise in Neuss 490 m² of an approx. 20 cm thick intermediate ceiling built of reinforced concrete were sawed up, dismantled and disposed of. In addition we dismantled 1,800 m² plasterboard partitions including insulation. Furthermore we removed 600 m² carpeted floor and hereafter ground all glue and carpet residues over the entire surface down to the concrete floor.

BUT Duisburg.
Here 200 linear metres of former ore bunker walls built of reinforced concrete with a thickness of up to 1 m were sawed off in a height of 8 m and at an inclination of 5°.

Alteration „Kleines Haus" at the Schauspielhaus Düsseldorf Gustaf-Gründgens-Platz l
Concrete sawing and demolition, PDF - reference letter of the architect regarding our work

Wire sawing works by means of a circular saw used to form circular cutouts needed for pipe transits with a diameter of 1.80 m in a 30 cm thick reinforced concrete ceiling

The reinforced concrete roof of a church tower located in Bottrop was cut off, dismantled, crushed and disposed of.

Demolition of masonry and concrete in a church. All the window frames over the side wall of a church were dismantled, crushed and disposed of. Combination of drilling, sawing and demolition operations as well as disposal.

Public utilities Münster -
9 floors of a stair tower built of reinforced concrete and part of the thermal power station, 37.80 m high, with a cross-cut of 5.70 m x 3.50 m and a wall thickness of 30 cm, were sawed off from inside by using a special procedure. Sawing works without using scaffolds, completely from inside, dust-free and free of vibrations.

Wire sawing works in the St. Johannes Hospital in Duisburg. Here foundations with a size of 1.80 m / 1.30 up to 2.20 / 1.80 m were cut by means of wire sawing (in order to avoid noise caused by large scale facilities during stemming operations). The time needed for cutting the approx. 35 m² surface was 2.5 days.

At the Raphael School in Gelsenkirchen several vertical openings were cut in 40 cm thick masonry as well as ceiling openings in 30 cm thick reinforced concrete.

Public utilities Münster
Concrete drilling works at the Mittelhafen
Cutting out and forming of several wall openings in 40 cm thick reinforced concrete.

Residential complex in Osnabrück
120 balconies with a weight of 5.40 t each were professionally dismantled and disposed of using a merlo resp. a 100-tonne truck crane.
Furthermore 18 reinforced concrete canopies were dismantled, 1,000 linear metres fascia built of precast reinforced concrete units as well as 800 m² asbestos cement slabs were dismantled and also professionally disposed of.

At the Dorint Hotel in Cologne we demolished the swimming pool on the first floor under regular business and disposed thereof. The pool was situated directly above the lobby at the entrance. We had 10 working days to execute this building project. More than 250 t reinforced concrete had to be dismantled and disposed of using a concrete saw..

Execution of demolition, concrete drilling and sawing works to the bridges of the Metro business group. Special task to be carried out in the outside area. Within one day 4 balconies of 12 m length and 1.40 m width were sawn off and dismantled by means of a 100-tonne crane (up to a height of 17.90 m). In the entrance area the reinforced concrete portal with a weight of 100 t was professionally dismantled (sawed off and dismounted) within one day.

The complete shaft cover with a thickness of 0.67 m was horizontally cut off from a 12 m deep shaft with a 8.80 m Ø by means of a wire saw. The shaft cover was sawn up into 4 parts of 4.6 t each and dismantled using a truck-mounted crane. The wire saw was used because the shaft walls had a thickness of up to 0.90 m. The works were carried out within two days.

Dismantling of balconies in a housing estate - order and cleanliness as well as consideration to the residents are self-evident.

Here an underpass of the DB AG in Essen was cut off over the whole cross-section by means of a wire saw. The width of the masonry was 1.25 m, the concrete slab had a width of 30 cm.

Here a door was sawn in a reinforced concrete wall with a 80 cm wall thickness using the wire saw cutting technique.

Here several openings were perforated, drilled out and sawn at a pumping station of the Emschergenossenschaft. The formed opening had a diameter of 170 cm and a depth of 90 cm.

Demolition works in the hall of Daimler-Chrysler executed for the construction of a new brake test rig.

Here a hall inside a hall was dismantled, its size was 15 x 10 m, its height approx. 8 m. The concrete slab was 35 cm thick. The whole hall had to be dismantled vibration-free and had to be disposed of. For these works we needed 5 working days and 4 skilled workers. In the pictures you can see the hall in its original state and during its demolition.

Here two openings were cut into a concrete slab using an electric joint cutter. Corner holes were formed to avoid overcuts. The dimensions of the openings were 1.55 x 1.55 m with a slab thickness of 25 cm. Including all subsidiary tasks such as disposal and cleaning of the building site the works were carried out within eight working hours.

Here 8 foundations weighing 35 t each were dismantled in front of the listed facade of an office building in Düsseldorf. The coordination was undertaken by us, these giant foundations could be loaded by us only during the night by means of heavy equipment. Several streets in Düsseldorf had to be closed,that is why the removal coulld be effected only during a night shift. The foundations were removed by us using the wire saw technique. We chose this technique because there were very strong reinforcement rods with diameters of 50 mm in the columns. The foundations had served to protect a 20 floor high building while this was being constructed.

Extensive concrete drilling and sawing works as well as concrete demolition works were executed.
A ramp made of reinforced concrete was sawn free at the lateral connections and hydraulically blasted asunder. The size of the ramp was 5.95 x 5.35 m up to a concrete thickness of 0.95 m. It took 3 days to do this and 3 skilled workers were needed to carry out these works incl. the removal of material from the second lower ground floor as well as 20 m³ soil.
The complete reinforcement over a surface of 20 m² and down to a depth of 0.30 m was exposed. Furthermore reinforced concrete and masonry were manually dismantled due to lack of space needed for big construction machinery.

Here a 2,000 m² concrete surface was milled off. An asphalt surface with a thickness of 2 cm was removed from the concrete surface, subsequently the milling material was gathered by a sweeping maching and disposed ofg as can be seen in the pictures.

Dismantling of balconies belonging to houses in a residential estate incl. removal and disposal thereof.

Here 1,150 m² reinforced concrete slabs were dismantled up to a height of 7 m and disposed of. Furthermore major drilling and sawing works were carried out.

Break-through in a 32 cm thick reinforced concrete wall, the size of the opening was 6.50 m x 3.50 m x 0.32 m. These works took 2 days incl. the removal of 17.5 t and the disposal thereof. Here it was not possible to use a conventional mortising machine since the adjacent shops and medical pratices were kept in full operation. The works were carried out to the great satisfaction of the client.

An approx. 2.5 m² wide opening in a 20 cm thick reinforced concrete ceiling was formed. To prevent the generation of dust in the inhabited house as far as possible, the preparation of the site was particularly intensive.

Dismantling of a 13 m long canopy by means of a guided wall saw and a lifting device. The saw cut had to be executed flush with the wall. For these works we needed half a working day and the customer was very satisfied.