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Krah Pipes App

Powerful tool for take-away: Krah Pipes App

To improve the know-how transfer from us to our customer we choose the way of a free app, so after half a year of further developments, we are proud to present our latest improved Krah-Pipe Calculation App. The app can run without an internet connection, so you are free to use it nearly everywhere.

A small tool, but a lot of functions:

1. The first main part of the App is handling the field of hydraulic calculations:

  • This feature enables you to calculate the flow speed and flow rate (according to ATV A110) just by entering your diameter, slope and filling height and rather choose your Kinetic viscosity and working roughness from a list ore entry a free chosen value.
  • If you already got a flow rate and a filling height but need a diameter you can calculate this by tapping on “FIND THE RIGHT DN/ID” on the tab bar on the top of the page.
  • Last but not least you can even calculate the right slope for your flow rate, diameter and filling height.
Calculating flow speed and rate
Calculating flow speed and rate
Determing your internal diameter
Determing your internal diameter
Calculating the slope
Calculating the slope

2. The second part is handling the field of “Storm water retention”:

  • This feature is made for dimensioning storm water retention regarding to diameter, length and volume at different filling heights.
  • On the “REQUIRED VOLUME” tab you are able to enter the volume you need and you will get a table with diameters between 300 mm and 2000 mm and 3 different filling heights showing you which length you will need.
  • On the “AVILABLE LENGTH” tab you are able to enter your given length to calculate a table with diameters from 300 mm to 2000 mm and 3 different filling heights (full filling, 2/3 filling and 7/8 filling) showing you what volume you will need.
Dimensioning the required volume
Dimensioning the required volume
Dimensioning the available lentgh
Dimensioning the available lentgh

3. The third part is “Electrofusion”:

  • Here we got 2 different categories.
  • First of all, the Krah welding instruction which is explaining step by step how to weld.
  • The second part is a page where you can choose a diameter to get the right barcode for your Krah E-Box.

4. The fourth part is the pressure pipe calculation:

  • This feature provides you with the possibility to calculate the needed wall thickness for your specific working pressure and even shows you the SDR (standard dimension ratio), weight and
    the stiffness of your pipe.
  • On the “KRAH PIPES” tab you are able to calculate the SDR (standard dimension ratio), the wall thickness, the weight and the stiffness (according to ISO 9969) for your KRAH pipe with given diameter and working pressure (according to DIN 16961).
  • On the “REQUIRED VOLUME” tab you are able to choose a SDR (standard dimension ratio) to get a table which shows you the internal diameter, the wall thickness and the weight (according to ISO 4427) for outside diameters between 315 mm and 2400 mm.
Dimensioning a pressure pipe
Dimensioning a pressure pipe
Dimensioning a standard pipe
Dimensioning a standard pipe
 

Last but not least there is our newest feature the “Quick Structural Calculation”

  • Based on many structural calculations, we setup this part to choose the right profile number of Krah-pipes to meet several conditions. Based on ATV127A and AWWA M55.
  • A feature to do a quick static check with a small selection of our favorite KRAH-Profile numbers.
  • Just enter the internal diameter, the trench depth, the groundwater level and if there is going to be traffic load to receive the trench width and a KRAH-Profile number out of a list of our favorite profiles in return.
Quick structural calculation
Quick structural calculation
Quick structural calculation
Quick structural calculation
 
So, if you miss any features or would like to give us feedback, please feel free to contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. or rate our App on the Google Play Store.
If we have aroused your interest, just try it and use the following link: https://play.google.com/store/apps/details?id=com.Krahpipes.Pipecalculation
 
Alternatively go to the Google Play Store and search for KRAH.
Krah Pipes App - QR Code

Author:
App-Developer Felix Bay
KAT GmbH