It completely depends on your substrate material and the level of impact protection you require:
• Bolt-down (Base-plated) Posts: Best for existing, solid concrete surfaces (like service yards or multi-storey car parks). They are quicker to install but rely heavily on the structural integrity of the concrete slab and the anchors used.
• Concrete-in Posts: Ideal for tarmac, block paving, or raw ground/soil. Digging in and concreting the posts provides much higher resistance against heavy-vehicle impacts because the surrounding earth absorbs the kinetic energy.
If bolting down to concrete, ensure the slab is at least 150mm thick and fully cured to prevent the anchors from pulling out or cracking the concrete upon impact.
