Game changing calculation method that tells you the pipe diameters required... No guessing on a rule of thumb and proving it works , then moving back to resize other sections. This calculator works forward then back to find out the smallest pipe diameter so that the meter to the appliance drop is less than 1mb. This then works out the installation volume, the purge volume and the purge type. This will also give you the new IGE UP 1B permissable pressure drop for existing systems. It has a page to work out each section of a pipe system seperatly, just like long hand with no mistakes, this includes every pipe material including MDPE.

Ios Update fixes.

Updates for IOS and IPad Corrections

Updates for new IOS issues in preparation for Major update to new British Standards

screen size fix for iOS 7

Update for glitch

updated purge section to match new IGE/UP/1B... press the P button to get the purge volume for the installation just calculated.

updates to match new iOS 6

New in version 3.0 the ability to take a screen picture of the pipe sizing this is stored in "your pictures" and can then be saved, emailed, or retained for proof. Version 3.0 also has a purge calculation button for each page. this will tell you the purge amount and remind you of the purge type for the installation. It will also indicate if the system is too large for a domestic engineer to work on.

Updates to match IOS changes.

Dropped SDK to 3.2 to make sure iphone 3g can still use.

Fixed glitches as reported in feedback, pipe charts are now up to 50 m instead of 30m helping to make the system more precise. if you find any faults email (enquire@gb-gas.co.uk) please

ALERT view if wrong pipe diameter is entered, saves simple errors. Removal of the tee pieces on the straight lengths, resistance is added when going around the corner only. (this is to stop confusion from original and oversizing)