British Standard Specification for Girder Bridges

A TRUE record of the repairs of Tintern Abbey will not fail to indicate that a very great advance in the scientific analysis, understanding and treatment of ancient monuments was made possible by cxpericnce as the work progressed, and that as the result of this fuller knowledge certain expedients were adopted in the later stages of the work which would have been considered absolutely beyond the scope of the conservator’s art at the commencement of operations. William Harvey

IV. Mortar Voids and Water Content, The magnitude of the voids and its change with additions of water will depend upon the gradation of the particles of F.A., each A. having its own individuality. J. Singleton-Green

THE satisfactory roofing of large areas has always been a problem presenting somewhat additional difficulties to the engineer. All the customary essentials with regard to a roof are present, viz., that it should be water-tight, be as inexpensive to keep in repair as possible, and that it should have a good appearance, but there is added to these requirements, if anything, the more important one that the material used for covering must be light. In the past, for this purpose, galvanised iron has been possibly most used, but of recent years cement which is entering into so many of our building products, has been combined with asbestos and a new roofing material is now becoming the vogue.