Provide enough information to allow the selection of the manufacturer product to meet requirements. This information may also be used to replace the installed product during the operation stage of the building's lifecycle. Information covering the execution of the deliverable should also be provided in the associated specification.
Name |
Definition |
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Purity |
An example value being Free of pests and disease. |
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Foreign matter |
An example value being Visually free of undesirable and potentially injurious foreign matter, including fragments and roots of aggressive weeds, sticks, straw, subsoil, pieces of brick, concrete, wire, large lumps of clay or vegetation, metal objects, plastics, treated wood, textiles, sharp fragments of ceramics and glass, and similar foreign objects. |
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Contamination - Topsoil and growing medium |
An example value being Do not use if contaminated with subsoil, rubbish or other materials that are: corrosive, explosive or flammable; hazardous to human or animal life; detrimental to healthy plant growth. |
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Contamination - Subsoil |
An example value being In areas to receive topsoil or planting media, do not use subsoil contaminated with rubbish or other materials that are: corrosive, explosive or flammable; hazardous to human or animal life; detrimental to healthy plant growth. |
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Objectionable odour |
An example value being Not permitted. |
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Give notice |
An example value being If evidence or symptoms of soil contamination are discovered on the site or in topsoil or planting media to be imported. |
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Quantity |
An example value being Provide as necessary to make up any deficiency of topsoil or growing media existing on site and to complete the work. |
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Supplier |
The Supplier of the Green roof substrates. |
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Source |
The Source of the Green roof substrates. |
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Standard |
An example value being In accordance with FLL Guidelines for the planning, construction, and maintenance of green roofs and GRO. |
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pH (range) |
An example value being 5.4–9.0. |
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Organic matter content |
An example value being ≤65 g/ L. |
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Percentage of material smaller than 0.063 mm in size (by mass) |
An example value being ≤13.5%. |
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Percentage of material greater than 4.0 mm in size (by mass) |
An example value being ≤50%. |
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Percentage of material greater than 8.0 mm in size (by mass) |
The Percentage of material greater than 8.0 mm in size (by mass) of the Green roof substrates. |
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Maximum water holding capacity (by volume) |
An example value being ≥25% and ≤65%. |
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Air content at maximum water holding capacity |
An example value being ≥10%. |
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Water permeability |
An example value being 0.3–30 mm/min. |
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Permitted materials for manufactured growing medium - Permitted materials |
An example value being Bark. |
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Permitted materials for manufactured growing medium - Notice |
An example value being Give notice prior to ordering or using permitted materials. |
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Permitted materials for manufactured growing medium - Declaration of compliance - Materials generally |
An example value being In accordance with BS EN 13650. |
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Permitted materials for manufactured growing medium - Declaration of compliance - Composted materials |
An example value being In accordance with PAS 100. |
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Materials not permitted |
An example value being Peat. |
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