Pond Design for a Formal Pond | Lined & Set Into Patio

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In planning: work to standard liner widths.

1) Dig hole to correct size plus 10 to allow room for concrete blocks.

2) Lay 4 x 18 x 9 concrete blocks on a 4 footing. (see Raised preformed ponds)

3) An inside row of concrete blocks is laid and backfilled with 6:1 concrete mix to form a marginal shelf.

4) 2 of sand is laid in the bottom.

5) Underlay is to be laid over blocks.

6) Liner 20 X 11 laid loosely and folded into position. Backfill behind blocks do not tuck in liner behind.

7) Slabs laid on top of liner using backfill as a footing.

Front edge of pond may be above lawn level therefore face with suitable stone or brick.

ALTERNATIVE Stone facing obscuring the first 10 of liner. For this method, the concrete block framework must be built allowing for the width of this. Double the width of the stonework and add it to the length and breadth of the liner to gauge how much extra liner is required.

TIP: Build the pond to the size 15 X 76 on the internal diameter of the block.. The exact size should be determined by the size of the edging slabs bearing in mind that it is best to have 1 overhang of slabs over the pond. Eg. If the slabs were exactly 18 including the pointing then the ponds internal diameter should be 152 X 78

Sand or underlay

Underlay

Liner

Slabs

Marginal shelf

Slabs

Liner

Blocks

Slab

1 overhang

Marginal shelf 12

Slabs

Footing

Liner

Sand

Footing

Block

Backfill lean mix 6:1 cement chippings to dust

Marginal shelf

Block

Backfill