Tag Archives: halprin sequence

pmapdx-halprin-sequence-001

Halprin Sequence Concrete Conservation

The Keller and Lovejoy Fountains are part of the Halprin Open Space Sequence, designed by Lawrence Halprin and Associates, and constructed between 1963-1970. PMA provided historic materials conservation services to Portland Parks & Recreation for the current Open Space Sequence restoration project. Conservation for repair work included:

  • A limited assessment of the concrete at the Keller and Lovejoy Fountains.
  • Concrete restoration specifications for concrete flatwork and concrete fountains.
  • Assistance during construction to determine the best methods for matching new work to the historic concrete.


    • Exterior observations were performed from the ground and accessible portions of the fountains. Concrete cores were taken from each fountain in order to perform petrographic analysis of the materials. The purpose of the assessment was to provide PP&R with an understanding of the general condition of the concrete and provide repair recommendations/priorities to maintain and prolong the lifespan of the materials. For additional information on the history of the Open Space Sequence, please visit the Halprin Conservancy.

    Lovejoy Pavillion 001

    Lovejoy Fountain Pavilion Rehabilitation

    Designed by Charles Moore in 1962 as part of Lawrence Halprin’s fountain sequence, the Lovejoy Pavilion represents a significant departure for Moore moving away from traditional design towards a Post Modern architectural vocabulary. This new design direction is expressed by Moore in the use of wood cribbing support columns and compound trusses resembling the surrounding West Hills of Portland, Oregon.

    Despite the copper clad roof, the wood structure was in early decay and the crib support columns were inadequate to support the roof load as visible in the crushing of support members. The structure’s Owner, Portland Parks and Recreation, committed to replacing wood components with original design, material, species, and craftsmanship.

    Building Envelope Corrections:
    • Guided Structural dismantling.
    • Created the documentation to support the replacement of deteriorated components with original species, tight grain Douglas-Fir, and improved details for weather protection.
    • Provided on-site guidance to the sub-contractor team for copper work and repair techniques.