Probably 50% of our 1M and 3M stands are purchased for installation on existing decks. A major advantage of our diving stands is that they do not require huge concrete footings (as do other manufacturers' cantilevered design stands).

We offer an anchoring "kit" for 1M/3M installations on existing decks. The kits use Hilti high-strength epoxy and heavy-duty stainless steel internally threaded inserts*. The installer should use a core-drilling rig with a 1.125" diamond core bit (instructions here.) For customers who do not have a core-drilling rig, we advise that they find a sub-contractor who has the rig and the necessary experience to drill precisely located holes per our instructions. The deck where the diving stand will be mounted should have concrete thickness of approximately 7". The Hilti anchor system is stronger than expansion inserts, so that only 8 Hilti anchors are needed (not 12 expansion anchors) for each 1M or 3M.

** Kits are priced with and without the epoxy dispenser (only one dispenser needed per job).

Anchoring Short Stands on existing platforms or concrete pedestals.
Hilti stainless steel inserts with high strength epoxy are strong enough to use for anchoring Durafirm Short Stands on platforms, but we do not advise this use because core-drilling through reinforcing steel may cause a cantilevered platform to be condemned. The use of Hilti inserts on platforms or pedestals should not be necessary; our bronze anchors should be embedded in the correct position when the concrete was poured. If this was not done correctly, the Hilti inserts are strong enough for use in concrete pedestals, as long as the inserts are not installed closer than 4" from the edges of the pedestal.

For facilities where there is work space under the deck in the area of the diving board installation, an alternative deck anchoring method would be "Thru-Rods". We no longer thread stainless rod, nor do we make bearing plates for this method. Available at good hardware stores is stainless steel "All-thread" rod that the customer can have cut to length Add 5" to the deck thickness for rod length to accommodate: casting foot thickness, shim,  washers, bearing plate, and 2 nuts. Rod diameter must be 5/8".

*Some Contractors prefer threaded studs instead of internally threaded inserts for anchoring deck equipment. We have two reasons for preferring inserts.
1) We prefer not to have immovable projections on the deck if the stand must be moved.
2) The feet of our ladders are a close-fit for getting a nut on the rod, so you don't want the rods too tall; or, if a larger shim is needed to level the foot, you may have cut the rod too short to get the larger shim in place.

** In 3000 psi concrete with insert install depth of 7" the expected tensile strength is approximately 6700 lbs of test load without failure.