We have a project on site and have noticed and issue with the design. Its a new house and we have a steel roof frame supported on external masonry cavity walls - the horizontal span is approximately 6metres. The 1st floor extends vertically into the roof to form a cathedral ceiling so...
Can anybody offer some guidance on whether brickwork and concrete (from an existing building on site) can be re-used in all or some of the following. General backfill to basement retaining walls, to a driveway and to a car parking area. The project involves the demolition of an existing building...
To limit deflections in uniformly loaded slabs, I'm aware of the rules for span/effective depth ratios i.e. 20 for simply supported slabs and 26 where continuous(UK Code). Can span/effective depth ratios be applied for transfer slabs given the non-uniform loading. The code says that deflections...
I have to provide a method statement and outline design as part of a planning application showing how we intend to retrofit a basement under an existing building and demonstrate how we will maintain support to the existing structure and not distress it.
To make matters more complicated the...
Due to a metre of soft ground below the proposed basement, we've been advised in the geotech report to dig it out and replace with compacted material. Although the report gives allowable bearing pressures for the clay (that will be below the backfill) I guess we really need bearing pressures for...
I'm working on the structural design of a basement. The flood risk assessment stated the threshold to the property at ground floor should be 500mm above existing ground level to cater for flooding (although this has never occured on the site). The design of the basement is such that the top of...
