Structural Engineering Services for extensions, loft conversions, load bearing wall removal and structural steel work calculations. At www.onlinebeam.co.uk in Surrey we design all Structural works for your home extension project for Building Control Approval. We design concrete foundations, concrete rafts, masonry walls or columns, floors, timber roofs, and steel RSJ beams with full calculations and padstone calcs. We also design steel beam connections and cut splice connections with full calculations and fabrication drawings. We also design timber structures such as floors, flat roofs, pitched roof rafters and purlins, flitch beams, ridge beams all with drawings and structural calculations for Building Approval. We are happy to attend sites but also offer a highly competitive online Nationwide service for England and Wales. Steel beam calculations. Steel column calculations. Flitch beam design calculations