This set consists of six Interface Engineering Publications (IEPs). The guides aim to bridge the gaps in technical knowledge at the interfaces between construction packages. They involve reformatting existing professional knowledge developed by services and structural sectors into a single source of co-ordinated guidance. The objective of IEPs is to reduce failures on site and create greater understanding of shared processes by clients, designers and contractors. The guides are aimed equally at services and structural engineers. The set includes IEP 1 'Screeds with Underfloor Heating', IEP 2 'Services Co-ordination with Structural Beams', IEP 3 'Services Co-ordination with Concrete Buildings', IEP 4 'Supporting Services from Structure'; IEP 5 'Services in Structural Framed Timber Buildings' and IEP 6 'Services in Timber Framed Construction'