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The Structural Engineer, Volume 87, Issue 8, 2009
Stone cantilever stairs are constructed in two basic forms, either with plain or rebated treads. The body of work available is generally confined to the examination of plain treads, yet the majority of stairs in existence are of the rebated type. This paper outlines guidelines for inspection of cantilever stairs and a method of analysis that predicts the behaviour of a flight of rebated treads under a variety of loading conditions. The theoretical analysis and model testing provide formulae for calculation of torsion, vertical and horizontal reactions, tread rotation, displacements and shear stresses. Philip Little, BEng Barrett Mahony Consulting Engineers Michael Hough, BSc (Eng), Dip Struct Eng, MSc, CEng, MIEI, MIStructE Barrett Mahony Consulting Engineers Edward Mullarkey, BE, MSc, MIEI Lecturer in Structural Engineering at Dublin Institute of Technology
Thomond Park, the historic home of Munster rugby, has undergone major redevelopment (Fig 1) which will see its capacity rise to 25 756. This paper describes the design and construction of the new stand and terrace structures. Particular emphasis is given to the development of the architectural and engineering concepts, the wind tunnel testing and dynamic analysis undertaken during detailed design, and the fabrication and erection of the two 150m span 'rainbow' roof trusses. Tom Cosgrove BE, MEngSc, CEng, FIEI, EurIng, FIStructE Director, Michael Punch & Partners Michael Quilligan BE, MEngSc, LicEng, MIEI Project Engineer, Michael Punch & Partners Bryan Whelan BE, MIEI Project Engineer, Michael Punch & Partners Cian Murphy BE, MIE Project Engineer, Michael Punch & Partners