Circular pile head for underpinning a slab

A circular pile head assembly comprising:

• a twin beam lifting attachment having a pair of beams configured to be placed above a pre-bored hole in a slab, each beam having a first connector;
• a tubular pile head including a pair of partial-cylindrical segments, each segment having a bearing plate extending generally transverse therefrom for engagement with an underside of the slab, each segment further having a second connector configured to connect with the first connector to connect the twin beam lifting attachment to the pile head;
• a rectangular pile configured to be driven between the partial-cylindrical segments of the pile head, wherein a gap is defined between the pile and the partial-cylindrical segments for receiving a poured cement;
• a pile head plate fixedly connecting the pair of partial-cylindrical segments, the pile head plate having a pair of curved edges corresponding to the partial-cylindrical segments and a pair of straight edges corresponding to a rectangular pile to frame the gap between the straight edges of the pile and curved edges of the pile head;
• and
• a pile driver for driving a rectangular pile into the pile head and toward a surface below the slab for reinforcement;
• wherein lifting of the twin beam lifting attachment causes the tubular pile head to lift and raise the slab to a raised position and cement inserted into the gap secures the slab in the raised position.