Concrete Base Installation Statement of Work Form

1. Concrete Base Installation Statement of Work Form

Provide details about your concrete base installation project to get started.
ShedOutdoor OfficeGreen HouseOther
2. What is the purpose of the structure to be installed?*
3. What is the width (in m) of the outdoor structure you need a concrete base for?*
4. What is the length (in m) of the outdoor structure you need a concrete base for?*
Area of Structure
If greater than 15m2 Planning permission may be required
Area of concrete base required.
shed base should be extra 100mm on each side which is 10cm so extra .2 to area calculations. https://tradecalcs.uk/landscaping/shed-base-calculator/
Based on the Standard area of your structure the concrete base thickness (m) should be:
For standard domestic garden sheds under 10 square meters, we typically recommend a minimum concrete base for shed depth of 100mm (4 inches).
Based on the Medium to Large area of your structure the concrete base thickness (m) should be:
This is for premium sturctures. ---- This provides sufficient structural integrity for most typical storage sheds. For larger structures like workshops or garden rooms, we increase this to 150mm (6 inches) to enhance the load-bearing capacity. Premium garden buildings or those housing heavy equipment often warrant bases of 150-200mm with additional reinforcement requirements.
8. Do you have a link to the structure you wish to install?
Ground Preparation and Access
YesNo
11. Will you require disposal of the excavated ground?*
Please note if the volume of substrate to be excavated is greater than 1.69m3 then a skip may be required.
12. Volume of Ground to excavate for a standard base size
ispose of calculation based on width, length, and height - this will be are of structure plus x either side plus 100mm - comment could be 50-100mm substrate but this calculatoror is based on 100mm
Volume of Ground to excavate for medium to large base size
ispose of calculation based on width, length, and height - this will be are of structure plus x either side plus 100mm - comment could be 50-100mm substrate but this calculatoror is based on 100mm
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FlintClaySandOther Ground Type
Alley way accessAccess through the back gardenSide door accessDriveway access for skip placementOther
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Material Costs

In this calculation we use the following link to provide estimates. https://www.diy.com/ideas--advice/building--hardware/cement-mortar--concrete/concrete-mix-ratios. We use a ration of 1:2:3, 1 part cement, 2 parts sand, and 3 parts aggregate.
Volume of MOT 1 substrate required for a Standard Base
Volume of MOT 1 substrate required for a Medium to Large Base
Wet Volume of concrete for a Standard Base (m3)
Wet Volume of concrete for a Medium to Large Base (m3)
Standard Dry Volume
Medium to Large Dry Volume
14. How much cement for a base is to be used (KG) for a Standard Base? (1part)
Calculating cement requirements involves determining concrete volume, applying the appropriate mix ratio, and accounting for material density. Standard cement density is approximately 1440 kg/m³, while one 25kg bag occupies about 0.0174 m³ volume.
How much cement for a base is to be used (KG) for a Medium to Large Base? (1part)
Calculating cement requirements involves determining concrete volume, applying the appropriate mix ratio, and accounting for material density. Standard cement density is approximately 1440 kg/m³, while one 25kg bag occupies about 0.0174 m³ volume.
You will require the below number of Standard UK Bags (25kg) of Cement for a Standard Base
You will require the below number of Standard UK Bags (25kg) of Cement for a Medium to Large Base
How much Sand for a base is to be used for a Standard Base (kg)? (2 parts)
The density of sand is between 1,450–1,600 kg/m³
How much Sand for a base is to be used for a Medium to Large Base (kg)? (2 parts)
You will require the below number of Standard UK Bags (25kg) of Sand for a Standard Sized Base
You will require the below number of Standard UK Bags (25kg) of Sand for a Large to Medium Sized Base
How much Aggregate for a base is to be used for a Standard Base (kg)? (3 parts)
ConditionDensityLoose aggregate1,500–1,600 kg/m³Compacted aggregate1,600–1,750 kg/m³ - for this calculation we used 1450
How much Aggregate for a base is to be used for a Medium to Large (kg)? (3 parts)
ConditionDensityLoose aggregate1,500–1,600 kg/m³Compacted aggregate1,600–1,750 kg/m³ - for this calculation we used 1450
How many bags of Aggregate will be required for a Standard Base? (25kg)
How many bags of Aggregate will be required for a Medium to Large Base? (25kg)
16. How much wood for a base is to be used?
Contact, Property, and Access Details
Homeowner Name
Phone Number
Contact Email*
example@example.com
Project Address*

Street Address

Street Address Line 2
CityCountyPostal / Zip Code
Special Requirements or Notes
Date Reservation
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1. Concrete Base Installation Statement of Work Form

Ground Preparation and Access

Material Costs

Contact, Property, and Access Details