One problem you sometimes get with floor repairs is when we are replacing part of a slab we need to make sure the new concrete doesn’t sink under load when next to the original slab. If you imagine one part of a fork truck on the old slab and the other part on the new slab there is a possibility of the slab sinking. We fix this by adding steel dowels to the existing slab which joins the slabs together with an extremely strong connection which can be as much as 18” into the older slab. We have to be accurate doing this and so we use a special pneumatic drill that can drill at exactly the same height and with the precise spacing required for the particular application and the drawings we have created or been given. We have two versions of the drill which is virtually hands free and thus removes any potential issues such as movement and at the same time is much less strenuous for the team.