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    Plumbing Formula
    • 19 Sep 2023
    • 2 Minutes to read
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    Contents

    Plumbing Formula

    • Updated on 19 Sep 2023
    • 2 Minutes to read
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    Article Summary

    Before reading this article, ensure you have read Measurement - Parts & Labour and Using Formula within Groundplan articles to aid in understanding the following Formula examples.

    📝 The Formula values provided in this article are for example purposes only.

    TermExplained
    counttotal counts
    lentotal metres measured
    count or len / xtotal count/length divided by an amount
    count or len * xtotal count/length multiplied by an amount
    ceil(x)rounding up a decimal value to the next whole number


    Downpipe

    Example Parts for a downpipe Count Measurement:

    plumbing-downpipes.png

    PartExplanationFormulaUMO
    100mm DVW pipe (6m)How many 6m lengths are required to complete downpipes when 3 metres 1/2 length (3m) is needed for each downpipecount*0.5lengths
    100mm PVC 90° bendHow many 90° bends are required when 3 are needed for each downpipecount*3each
    100mm saddle clipHow many saddle clips are required when 3 are needed for each downpipecount*3each
    100mm classic expansion outletHow many expansion outles are required for each downpipecounteach
    Downpipe nozzleHow many nozzles are required for each downpipecounteach
    (optional) 100mm junction (for 80%)How many junctions required for 80% of the downpipes neededceil(count*0.80)each


    100mm DWV Sewer (av. 1.5m depth)

    Example Parts for a 100mm DWV average 1.5m depth Length Measurement:

    plumbing-sewer.png

    PartExplanationFormulaUMO
    100mm DWVHow many 6m lengths required for the total length measuredceil(len/6)lengths
    Trench work (1.5m average depth)How many m3 for the total length measured multiplied by the 600mm wide by 1.5m deeplen*0.6*1.5m3
    Crushed rock (400mm average depth)How many m3 for the total length measured multiplied by the 600mm wide by 400mm deeplen*0.6*0.4m3


    Sewer Bend

    Example Parts for a sewer bend Count Measurement:

    plumbing-bends.png

    PartExplanationFormulaUMO
    100mm 45° bendRequire 2x 45° bends for each 90° countcount*2each
    100mm DWVAllowing an additional 600mm of 100mm DWV for each upwards pipe (Grouping with Sewer Measurement) divided by 6m lengths required for the total length measuredceil(len*0.6/6)lengths


    For Formula assistance, please reach out to Support. Go to: Help > Send us a Message.

    Download a PDF copy of Using Formulas within Groundplan here.


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