The author suggests that there is a gap in the range of available equipment for street lighting schemes. This gap is considered to be between a column mounting height of 12 M and schemes commonly described as "high mast". The mounting height proposed is in the region of 15 M to 18 M, which is felt to be a natural progression from the present mounting heights of 5 M, 6 M, 8 M, 10 M and 12 M. The problems associated with extending the range of taller conventional lighting columns to 18 M are discussed, and in particular the correct lamp/lantern combination to use at that height. For example, it is suggested that the approximate rating of lamp required at a mounting height of 15 M is 270 w and, at 18 M, 370 w, indicating the need to specify (for use at 18 M) multilamp lanterns, or probably an unacceptable number of single lamp lanterns, or the use of high pressure sodium lamps. Central or opposite street lighting arrangements are considered in relation to possible applications of this intermediate mounting height which are given as the lighting of motorways or similar high speed dual carriageways, roundabouts (particularly large diameter mini-roundabouts) and in the lighting of elevated roads where it is only possible to erect units at the lower level. Information is provided on the use of 15 M steel columns supporting a lantern housing 2 x 135 w sox lamps for the Sheffield inner ring road scheme, and the use of extended columns in connection with the re-lighting of the North Bridge at Doncaster. /TRRL/

  • Corporate Authors:

    Association of Public Lighting Engineers

    78 Buckingham Gate, Westminster
    London SW1E 6PF,   England 
  • Authors:
    • Aspinall, R
  • Publication Date: 1978-6

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 44-48
  • Serial:
    • Public Lighting
    • Volume: 43
    • Issue Number: 181
    • Publisher: Association of Public Lighting Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00184420
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM