1. Anon, EXTREN Design Manual, Strongwell, Bristol VA, 1989.
2. Anon, Fiberline Design Manual for Structural Profiles in Composite Materials, Fiberline Composites A/S, Kolding, Denmark, 1995.
3. Anon, The New and Improved Pultex Pultrusion Design Manual of Pultex Standard and Custom Fiber Reinforced Polymer Structural Profiles, Creative Pultrusions Inc., Alum, Bank, PA, 1999.
4. G J Turvey, ‘Pultruded GRP frames: Simple (conservative) approach to design: a rational alternative and research needs for improved design’, Int. Workshop on Composites in Construction: A Reality, Reston, ASCE Special Publication, 2002, 258-266.
5. Steel designers’ manual,1994