Special Character

  • Riverbend Bible Church

    Brief

    To provide geotechnical, structural, civil and fire engineering design as part of a design team from feasibility and concept through to construction completion.

    Project Outline

    This architecturally designed upgrade of the existing multi-use building, incorporated a new ablutions block and enclosed walkway linking the two facilities. The project included stormwater design, new foundations, steel frames, masonry and timber walls, as well as demolition and strengthening of existing brick walls.

    Challenges

    The geotechnical report indicated the site had geotechnical challenges which required upgraded foundation solutions including foundation ties and rafting.

    We were required to create a structural design that met the client’s criteria, while  minimally disrupting the interior of the multi-use building. This was achieved by applying strengthening to the exterior using buttressing structures for strengthening and structural framing of additional walkways and utility rooms.

    We also had to design on-site stormwater disposal solutions.

     

  • Maryknoll Chapel

    Brief

    To provide geotechnical, structural and fire engineering design from feasibility and concept through to the completion of construction.

    Project Outline

    The project involved an upgrade of the existing monastery accommodation block and construction of a new chapel. The development also included the upgrade of the accessway.

    Challenges

    The new chapel was a challenging structure, utilising curved glue-laminated timber rafters to form a dome on a sloping site.

  • Karamu High School Sculpture

    Brief

    To provide structural design from feasibility and concept through to the completion of construction.

    Project Outline

    The project involved foundation and super-structure design of a complex steel sculpture.

    Challenges

    The complexity of the structure required a combination of design modelling and on-site verification during fabrication.

    Outcome

    This work resulted in an aesthetically pleasing sculpture and a very satisfied client.

  • Hastings Courthouse Sculpture

    Brief

    To provide structural design from feasibility and concept through to completion of construction.

    Project Outline

    The project involved foundation and super-structure design of a complex steel sculpture.

    Challenges

    The complexity of the structure required a combination of design modelling and on-site verification during fabrication.

  • Greenmeadows New World Sculpture

    Brief

    To provide a structural design from feasibility and concept through to the completion of construction.

    Project Outline

    To design a metallic tree sculpture to be placed in the Greenmeadows New World carpark. The structure was 6m high and each leaf was different.

    Challenges

    Due to the unique structural form of the sculpture, the design was based on a series of prototypes which were fabricated and tested before finalising the design.

    Outcome

    The project was completed on time and on budget and is now an iconic feature of the supermarket.

Effective modal seismic design of two-way asymmetric-plan RC wall structures

Another great accomplishment for one of our Senior Structural Engineers, Philip Wilkinson. Philip along with his advisor have had another article published, this time in the Bulletin of Earthquake Engineering Journal. An abstract of the paper on “Effective modal seismic design of two-way asymmetric-plan RC wall structures” as follows.

Reference: Wilkinson, P.J. and Lavan, O. “Effective modal seismic design of two-way asymmetric-plan RC wall structures” Bulletin of Earthquake Engineering (2017)

“This paper presents a new direct deformation based seismic design method called Effective Modal Design (EMD). The method is applied in this paper to multistorey two-way asymmetric-plan reinforced concrete wall structures. EMD is a generalization of the Direct Displacement Based Design method based on an inverse version (formulated herein) of the Effective Modal Superposition analysis method. The proposed EMD method should only be used when DDBD is not applicable. The accuracy and reliability of the proposed design method is verified for a wide range of asymmetric-plan reinforced concrete wall structures using nonlinear time history analysis of reasonably realistic 3D structural models. Advantages of EMD include explicit consideration of nonlinear, torsional and ‘higher mode’ effects. The method is direct without iteration and generates ‘capacity-designed’ design moments for all regions of all reinforced concrete walls in the seismic structural system. EMD only requires two response spectrum type analyses. It does not require time history analysis or pushover analysis. It is therefore relatively practical, and is intended for use in structural design offices for routine seismic design of multistorey asymmetric-plan RC wall buildings.”

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