POND BRIEF

NOTE: this is copied from Capella GHPC Level 2, Unit 8

You have a client who would like you to build them a pond in an informal shape approximately 2m x 3m. It should be at least 45cm deep. They would also like to have a small cascade.

Research various types of liner including performed plastic & fibreglass. Get a price for the various options.

Consider whether you will use underlay or some other alternative and budget for this.

Cost up using liner for your cascade or a preformed type.

A pump will be required: - price up various options appropriate to the size of your pond and cascade.

Your client expressed an interest in have some fish in the pond. What & how many would be suitable for a pond of this size?

Once you have decided which materials and stock you will use, write up your notes for homework to be handed in next week.

download complete pond brief answer

Pond calculations

W = Width L = Length D = Depth V(m) = volume(metres) V(l) = Volume (Litres)

Formula for pond liner area

Area required = (W + 2*D) * (L + 2*D)

Formula for pond volume

V(m) = L X W X D V(l) = V(m) * 1000

Calculating pump flow rate required for a cascade

The flow rate needs to account for the size of the lip of the cascade.
e.g. Lip of cascade = 50cm, means we need a flow rate of 100litres / min or 600 Litres / hour. see table below: NOTE: this assumes height of cascade has already been accounted for, i.e. the flow rate is that given for the height of the cascade. Check specs on pump for this.