CITY * DEMOLITION

Published: 23/3, 2023

Right in the heart of Weingarten, Germany, a new city quarter called “Martinshöfe” is being built. The 10-acre (4 hectare) site will include residential buildings with around 500 condominiums and rental apartments, green and open spaces, and a commercial area with restaurants and retail outlets. But before this building project could proceed, a former industrial complex had to be completely demolished followed by site preparation work.

In addition to the removal of more than 52,300 yd3 (40,000 m3) of concrete and reinforced concrete, demolition contractor CK Abbruch is also excavating nearly 157,000 yd3 (120,000 m3) of earth for the buildings.

Having demolished buildings above ground level, experts have been working on the removal of huge underground foundations left over from a former old forging company, with some elements reached nearly 1,692 yd3 (1,500 m3) in size. In some places, the concrete foundations contained a large number of heavy steel components, and had to be chiseled out or burned through and removed individually.

What’s more, CK Abbruch’s contract mandated that all work in the inner-city location had to be carried with the lowest noise and vibration levels possible.

 

Gentle milling and cutting

In view of these challenges, CK Abbruch decided to use a combined demolition and dismantling process. The machinery at the core of the process to be used at Weingarten consisted of two hydraulic excavators equipped with KEMROC attachments, a 45t machine with a DMW 220 cutter wheel and a KR 150 drum cutter, as well as a 60t machine with a DMW 220 HD cutter wheel and a KR 165 drum cutter.

“At peak times, we have five excavators with operating weights of up to 80t operating on this construction site, as well as a mobile crushing plant and a mobile screen for high-quality processing of the resulting concrete residue,” says CK Abbruch CEO Markus Christadler. “The drum cutters and cutter wheels, our excavator attachments, play a decisive role in achieving low-emission, environmentally friendly and economical demolition.”

The DMW range of cutter wheels from KEMROC achieve high performance in hard rock and reinforced concrete. CK Abbruch uses the cutter wheels to economically cut down large-volume structures into smaller individual pieces. These are then broken down into a size suitable for crushing using concrete cutters and shears.

“We can largely rule out the use of loud, high vibration equipment such as breakers in the steps prior to crushing,” Christadler says. “The narrow tool profiles of the cutter wheels also help to minimize the production of worthless fine-grained material as well as keeping fuel consumption and tool wear low.”

Similarly, KEMROC’s KR range of drum cutters are robustly built and ideal attachments for tunnelling applications as well as for low-vibration and low-noise demolition of reinforced concrete, making them a perfect complement to the KEMROC cutter wheels perfectly.

“We use the drum cutter attachments where, for certain reasons, we cannot use the cutter wheels,” Christadler says. “At many places, foundations on our site meet or cross the boundary with public and private land. At these points, we are not allowed to cross our boundary into existing structures, so we use drum cutters because, unlike the cutter wheels, for technical reasons we can work without crossing the boundary.”

 

Calculable parameters

By the end of November 2022, around 80 percent of the demolition work at the Martinshöfe project in Weingarten had been completed. Christadler was confident that this part of the project would be completed by the end of March 2023 and that the concurrent earthworks would continue. Consumable costs to date are also in line with what he has experienced with other projects in the past.

“Overall, with this equipment, we can calculate our costs accurately, we can complete the work in an environmentally friendly manner, on time and within budget,” Christadler says.

www.kemroc.com

See all news »

Information about 'Cookies'

This website is using cookies. A cookie is a small text file that the website requests to store locally on the visitor's computer. It contains a certain amount of information and a timestamp.

Cookies on this website

Temporary Cookies

We use temporary cookies ("sessions") in order to provide a functioning website. These cookies only contains a unique identifier and a timestamp, while any personal data is stored on our server. These cookies expires within one hour, and will be automatically deleted when you exit your webbrowser.

Less temporary cookies

In order to remember wether you have accepted cookies or not, we need to store a cookie containing a timestamp and a code. If you log in as a user on our website, you are also able to select wether you want to remain logged in or not. In case you decide to remain logged in, we will store another cookie on yuor device, also containing a code and a timestamp. No personal data is saved in these cookies. These cookies will expire and be automatically deleted within 30 days of your last visit, and you can delete them manually from within the webbrowser's settings.

Cookie for Google Analytics

We use Google Analytics in order to improve our vistor's experience on our website. We do not save PII (Personally Identifiable Information) using Google Analytics. To read more about the cookies stored, read more at Google Developers.

Inactivation of cookies

If you do not wish to accept cookies from our website (or others), you may turn it off in your webbrowsers security/privacy settings. You can also let your browser inform you each time a website tries to store a cookie, or choose to remove cookies that has already been stored.

See your browsers help pages in order to find out more on how to change these settings (the instructions will differ depending on what browser, operating system and what versions you are using).

Close

This website use cookies
This website use cookies to bring you the best possible experience. You must accept this in order to get access to our content. - Read more »

Accept all Only necessary