Graphical Construction Glossary >> Temporary Work. >> shoring >> Raking Shore Details
Note! Just in case any of my readers tend to see these pages of old carpentry details as old fashioned in this day and age of engineered proprietary steel systems then I ask them to think again. At the time of writing this (2nd October 2009) once again the people in Sumatra are coping with the devastation of earthquakes, and the people in Samoa trying to cope after an earthquake induced Tsunami. Two type of events that can leave buildings in dire straits and in immediate need of stabilisation while recovery work proceeds.
Above is a sketch of a timber constructed double raking shore showing some of the parts used.
At the side are sketches of a wall spike and an iron dog.
In conventional building, a lot of the force used to push a wall over comes mostly from the floors. The areas of the walls near to the floors have to be supported. Above is the method of determining the line of the raking shores.
At the right is a detail of the layout at the top of the raker. In areas of subsidence and earthquake zones; earth tremours can cause normal butt joints to shake loose. The ideal in in most situations is steel with positive connected joints, but as I implied before, it is not always available.
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