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Striker Black is a locally made crushed shale that packs well for driveway uses and looks great with the dark grey...almost black colour.
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Please allow at least 24 hours when scheduling a delivery.
To calculate how much you need:
Take measurement: length (ft) x width (ft) x thickness (ft)
20 feet x 5 feet x 4 inches --> 20 x 5 x (4/12) --> 20 x 5 x .33 = 33.33 square feet
--> 33.33/27 to convert into cubic yards --> 1.23 cubic yards
to allow for some shrinkage caused by compaction it is a good idea to add at least15% to your number
--> 1.23 x 1.15 = 1.41 --> Round up to the nearest half cubic yard --> 1.5 cubic yards