Technical Guidance Note (Level 2, No. 20): Design and detailing of lintels in masonry walls

This Technical Guidance Note describes the design and detailing of base plates – the primary means by which steel-framed structures transmit vertical loads into their foundations.

This Technical Guidance Note covers the inspection of structural elements that are typically present within buildings during their construction and/or alteration phases.

Until relatively recently, masonry was the major load bearing component in a building structure. With the advent of steel and concrete frame technologies, masonry has become a part of a building’s cladding envelope and as such is more prone to being exposed to lateral loads than vertical ones. This Technical Guidance Note concerns the design of masonry walls that are subject to lateral loads i.e. they are being used as a cladding element. It will discuss the way in which the material is assessed against how it is being restrained and its geometry. All of these factors have an impact on the design of masonry walls as well as the mortar within them and the exposure conditions. This is discussed in Technical Guidance Note 27 (Level 1) and should be read in conjunction with this guide. (This article was updated in October 2016 to reflect errata issued since its original publication.)