Boyd argues that modern architecture has triggered a necessity for greater harmony between architects and engineers. Boyd describes the architectural qualities of tension structures through an analysis of several case studies including projects by Frei Otto and Boyd's own house at Walsh St. Being a relatively new concept, Boyd criticises the neglect towards smaller buildings in this structural system, and also highlights some of its shortcomings. A 2-page letter from 'Arthur' (surname unknown) at the University of Melbourne's Department of Civil Engineering provides feedback to Boyd on his analyses of the chosen case studies.Original manuscript of article published in The Architectural Review Vol.134, No.801, November 1963, pp. 324 - 334. This draft was returned with covering letter from: ‘Arthur’ (AJF) Melbourne Uni. Dept Civil Engineering. Typewritten (c copy), foolscap, 14 (+2 quarto letter) pagesMinor handwritten editsengineering, tensile structure, master-designer, bernard lafaille, zagreb french pavilion, matthew nowicki, livestock pavilion, frei otto, paul rudolph, florida house, bill irwin, kevin borland, peter mcintyre, john and phyllis murphy, yuncken freeman, sidney myer music bowl, eero saarinen, yale hockey rink, edward d. stone, brussels u.s. fair pavilion, boston arts centre, walsh street, robin boyd, manuscript