Installation of a beam has the combined effect of distributing loads and strengthening masonry weakened by structural movement, thus providing a versatile means of restoring structural stability to masonry where it has cracked or failed and lost its load bearing capacity.
These are generally double bar installations incorporated into mortar bed joints to traverse cracks and dissipate stresses within masonry over a larger surface area whilst still allowing small movements of the structure due to natural thermal variations.
Beams can be used in isolation or accompanied by a range of Thor Helical methodologies to restore stability to a structure resulting from inadequate or failed drainage, inappropriate or failed foundations, ground movement, weathering, poor building practice and increased loading stress due to building alterations.
On older buildings originally constructed without lintels over openings relied purely on the strength of timber framed windows to support masonry over the openings. The series of photographs below illustrate an example of a late victorian farm cottage where masonry above openings had started to sag by its bowed and cracked appearance; possibly due to decay of the original wooden frame windows?
A decision was to made to replace the windows with more thermally efficient uPVC double glazed units prior to reinforcing and strengthening the masonry above resulting in the complete failure of soldier arches above requiring temporary strutting support. To provide essential support to the masonry we were called in to install Thor Helical Remedial Masonry Beams above openings combind with Grout Ties driven up through soldier arches to tie in with the lower cord of Masonry Beam, all held in position with WHO60 cementitious grout.
The photographs below illustrate an example of beam installation over an opening to support masonry above to allow replacement of a faulty lintel installed as part of the structure when originally built.
As an approved specifier and installer of the Thor Helical products we can offer an insurance backed 10 year warranty on Masonry Beam works for a small additional fee through Construction Guarantee Services Limited.