Hi thanks for contacting Fence Guru. If by deck you mean something that is raised off the ground and will need to comply with balustrading Australian standards, the answer is no. If however, it is a timber or concrete deck around a pool, absolutely. They will just need to be installed with the correct fixing kits for the material they are being installed into. Here are the links for the
timber fixing kits for spigots and base plated posts, and here is the link to the f
ixing kits for concrete. If you are fixing into concrete, you will also be required to use a chemical anchor to achieve compliance.