The refurbishment of one of Western Australia’s oldest Catholic Cathedrals received a hydraulic boost recently from Enerpac’s 700 bar technology and Onsite Engineering (OSE).
The hoist of just millimetres at a time was taken so the upper levels and roof structure of St Mary’s Cathedral in Perth could be lifted clear of the lower levels to relieve the weight on columns, arches and structures as the cathedral was widened and walls removed while being refurbished as part of a $25 million restoration.
The St Mary’s Gothic Revival cathedral was restored to maintain its structural integrity and heritage value while eliminating rising damp, structural weakness and a crumbling bell tower.
OSE installed a temporary steel framework to place multiple Enerpac single-acting low height RSM 10 ton cylinders to lift the upper structure so it could be located on a permanent steel structure.
When this was in place, walls below were cut out and the building reconfigured to accommodate wider and larger roof span, where one old section joins into a new section.
The cylinders were selected because they could be fitted into confined spaces in which they were required to lift, being only 43mm high before plunger extension.
The flat design of the 5 to 150 ton capacity range is designed for use where most other cylinders will not fit, with starting heights ranging from 32 to 100mm.
Enerpac RSM/RCS series low height cylinders feature power-to-height ratios for confined space lifts in construction, infrastructure, machinery and mining applications.
Often used in combination with V series needle valves to control cylinder speed during lifting and lowering, they feature baked enamel finishes for corrosion resistance, hard chrome-plated steel plungers and grooved plunger ends requiring no saddle.
The RSM Flat-Jac cylinders used on the St Mary’s project feature mounting holes to permit easy fixturing.