The client has to extend the property through the main wall into the garden to make small rooms into big ones - needling keeps the upper floors where they are supposed to be.

Techniques

Using medium duty props with load capacities of up to 200 kN (20 tonne), erected in conjunction with fabricated steel needle beams, E P Rothwell & Sons Ltd can design and erect needling to support all types of wall from a simple two storey house to a complex office building.
Where necessary, foundations, either concrete or spread timbers, can be installed to support the temporary loads. All necessary timber packing and protection to the existing brickwork of stonework is supplied and can be installed either during or before erection of the needling.
Any holes required in the structure will be cut out and prepared to receive the steel beams and local propping installed as necessary.
Any particular requirement for lifting of the new steel beams will be taken care of so that there is no need to worry about manhandling them through the temporary supports.
Work is undertaken by our own labour, all of whom have been trained in the handling of heavy equipment and working in all types of site environments. They are all experienced in this type of work and bring many years of their varied experience to bear on every job that they work on.
The team allocated to each job will be carefully selected and sized to suit the required rate of progress and will arrive on site with all of the materials necessary to carry out the work with the minimum of supervision by the client. All tools and equipment will arrive with the team including all of the little but important items that would take an age to assemble if you were to do it from scratch.

Case Study

During a large domestic refurbishment job in North London an existing conservatory was to be demolished and replaced with a permanent brick built extension. The existing division wall in the building were to be removed at the same time to leave a large unobstructed space. The existing structure had suspended timber floors but the conservatory had a concrete slab. Sleepers were laid under the floor where necessary and bedded to provide a sound foundation. Externally, props were set out to avoid drainage trenches and manholes.

1) Additional props were installed to support floors where internal walls were to be removed and the whole structure left stable and ready to receive the new steelwork.

2) All props used during needling are stabilised as necessary and braced to ensure that the structure remains intact.

3) Where it is essential that movement is monitored, a range of measuring and recording devices can be used to determine the exact behaviour of the structure.