The work reported in this paper concerns a systematic cost and performance evaluation of alternative methods of forming and casting vertical concrete structures. In particular, slipform, climbform, jumpform and the supershafter methods are reviewed and compared with each other and the conventional forming method. The study covers multistorey cores of up to 40 storeys, silos, bridge piers and other vertical structures. It excludes very large and unusual structures such as cooling towers. For those structures covered a set of input resource curves have been derived; a sample of these curves appear in this paper. These curves relate the quantities of input resources to the design parameters and construction methods. The input resource curves have been used to derive the 1987 break even curves for the standard cost as well as the total forming cost. It has been shown that for building cores of less than 15 storeys high, none of the alternative methods can compete with the conventional forming method. For tall structures (greater than 30 storeys), the alternative methods can potentially reduce the costs by up to 30-40 per cent. The relative merits of each method have been discussed. The work contains a set of recommendations for the selection of construction methods best suited to particular designs; these are based on the 1987 break even curves presented in this paper. (Author/TRRL)

  • Availability:
  • Corporate Authors:

    Institution of Engineers

    11 National Circuit
    Barton, A.C.T.,   Australia 
  • Authors:
    • Jaafari, A
    • Kew, Y C
    • Yeoh, C K
  • Publication Date: 1989-5

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Filing Info

  • Accession Number: 00491530
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, TRIS, ATRI
  • Created Date: Mar 31 1990 12:00AM