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Landscaping formula examples: fencing, turf and concrete

Dive in landscaping formula examples.

Updated this week

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.

Term

Explained

len

total metres measured

area

total square metres measured

len or area / x

total length/area divided by an amount

len or area * x

total length/area multiplied by an amount

+ count * x

add the number of individual runs drawn multiplied by an amount

ceil(x)

rounding up a decimal value to the next whole number

Fencing

Example parts for a 1.8m high fencing length measurement:

⚠️Warning: This example does NOT use the height component in the measurement unit section:

Part

Explanation

Formula

UoM

Fence Rails 75mm x 38mm x 4800mm

How many 4.8m lengths of fence rail required to install 3 rails

ceil(len /4.8*3)

lengths

Fence Pailings 100mm x 17mm x 1800mm

How many 100mm wide pailings required for the length measured

ceil(len*0.1)

each

Hardwood Posts 200mm x 200mm x 2400mm

Posts required every 2.4m and allowing for an additional post at the beginning and end of each run

ceil(len/2.4+count*2)

each

Concrete 20kg ready set bag

Bag required for each hardwood post

(len/2.4)+count*2

bags

Turf

Example parts for a sir walter turf area measurement:

⚠️Warning: This example does NOT use the height component in the measurement unit section.

Part

Explanation

Formula

UoM

Sir Walter Turf (1 m2 is covered by approximately 1 roll)

How many rolls are required for the area

ceil(area)

rolls

Top soil

How many m3 is required when the top soil is 200mm thick

(area*0.2)

m3

Concrete

Example parts for a 150mm thickness concrete area measurement:

📝Note: This example uses the depth section of the measurement unit.

Part

Explanation

Formula

UoM

Concrete 150mm

How much m³ of concrete which the 150mm depth is automatically applied for the area drawn

volume

Formwork

How many metres of formwork is required for the perimeter around the area measured

len

m

Steel mesh 4.56m x 1.97m (7.5m2 coverage)

How many 7.5m2 coverage sheets are required for the area measured

ceil(area/7.5)

sheets

Bar chairs (pk500)

How many chairs are required to support the steel mesh with 4 per m2 and come in a bag of 500 for the area drawn

ceil(area*4/500)

bags

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