A photograph of concrete blocks and steel beams reinforcing a brick building on Hereford Street.
A photograph of concrete blocks and steel beams reinforcing a brick building on Hereford Street.
A photograph of the ends of two beams from the house at 116 Centaurus Road.
A photograph of a detail of a beam removed from St Paul's-Trinity-Pacific Church.
A photograph of the earthquake damage to the concrete beams in a room in the PricewaterhouseCoopers Building. Sections of the concrete have crumbled to reveal the steel reinforcement underneath. A number of the ceiling panels are missing and another is hanging loose. Some of the bars that hold the ceiling panels are also hanging loose.
Damage to Cranmer Courts. The top of this facade has fallen away, exposing the beams behind.
A photograph of a detail of a beam removed from the house at 116 Centaurus Road.
A photograph of a nut and bolt in a beam from St Paul's-Trinity-Pacific Church.
A photograph of a nut and bolt in a beam from St Paul's-Trinity-Pacific Church.
Photograph captioned by BeckerFraserPhotos, "St Luke's Church, Kilmore Street - detail of exposed roof beams".
Beam-column joints are addressed in the context of current design procedures and performance criteria for reinforced concrete ductile frames subjected to large earthquake motions. Attention is drawn to the significant differences between the pertinent requirements of concrete design codes of New Zealand and the United States for such joints. The difference between codes stimulated researchers and structural engineers of the United States, New Zealand, Japan and China to undertake an international collaborative research project. The major investigators of the project selected issues and set guidelines for co-ordinated testing of joint specimens designed according to the codes of the countries. The tests conducted at the University of Canterbury, New Zealand, are reported. Three full-scale beam-column-slab joint assemblies were designed according to existing code requirements of NZS 3101:1982, representing an interior joint of a one-way frame, an interior joint of a two-way frame, and an exterior joint of a two-way frame. Quasistatic cyclic loading simulating severe earthquake actions was applied. The overall performance of each test assembly was found to be satisfactory in terms of stiffness, strength and ductility. The joint and column remained essentially undamaged while plastic hinges formed in the beams. The weak beam-strong column behaviour sought in the design, desirable in tall ductile frames designed for earthquake resistance, was therefore achieved. Using the laws of statics and test observations, the action and flow of forces from the slabs, beams and column to the joint cores are explored. The effects of bond performance and the seismic shear resistance of the joints, based on some postulated mechanisms, are examined. Implications of the test results on code specifications are discussed and design recomendations are made.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
A photograph of the partially-demolished Cranmer Centre. Some of the wooden beams have writing on them.
A photograph of the partially-demolished Cranmer Centre. Some of the wooden beams have writing on them.
A photograph of the partially-demolished Cranmer Centre. One of the wooden beams has writing on it.
A photograph of the partially-demolished Cranmer Centre. One of the wooden beams has writing on it.
A photograph of the partially-demolished Cranmer Centre. One of the wooden beams has writing on it.
A photograph of the partially-demolished Cranmer Centre. One of the wooden beams has writing on it.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
A photograph of the partially-demolished Cranmer Centre. One of the wooden beams has writing on it.
A photograph of nails in a beam of wood from Wood's Mill grain silo on Wise Street.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
A photograph of a beam removed from the Cranmer Centre and placed on the ground in front.
The Amala Organic Hair Spa. Timber beams can be seen sticking out from the second level window.
A tangle of metal pipes and a roof beam on the footpath outside the Durham Street Methodist Church.
A tangle of metal pipes and a roof beam on the footpath outside the Durham Street Methodist Church.
A photograph of a nail in a beam of wood from Wood's Mill grain silo on Wise Street.
A photograph of a nail in a beam of wood from Wood's Mill grain silo on Wise Street.