10 Questions for Peeter Kirtsi / Krah Pipes OÜ

Calculation of the center of gravity (e) and moment of inertia (Ix / Jx)

Basic explanation:
Topic: Calculating the moment of inertia of the following object.

The Object has a fixed defined size and exist out of 18 squares with a side length of “a”. It is a complex objects and has a complex geometry. We can reduce the complex geometry to 4 basic rectangular objects.

Trelleborg Forsheda Pipe Seals have proudly supplied elastomeric seals for pipe joints to Polypipe in the UK and Irish markets for more than 10 years.  From EN 1401 pipes through to Ridgidrain and structured wall pipes up to DN 1050mm. 

We were therefore very pleased when Polypipe became the Krah licensee for the UK and Ireland and asked us to help to develop a ‘push fit’ rubber jointing system for their DN750, 900 1050 & 1200mm Krah pipes.  We had previously been involved with other Krah Licensees in Estonia, Italy, Mexico and the US so the Krah pipe technology was not new to us but ensuring a robust joint to meet the demands of EN 1277 is never an easy task. 

Potable water is the most important food on earth and is not replaceable. The natural element of water is the basis of earthly existence. In Germany, water is the purest and most monitored food. It is constantly tested for quality and ingredients. The daily consumption of water in Germany is 120 liter per citizen – this corresponds to an annual consumption of 4 billion cubic meters. Such huge amounts of water are not required simultaneously throughout the day and are therefore not taken from the water system at the same time. Therefore water storage systems are needed to cover the consumption peaks and the operational standstill periods during the water transportation.