There!
Site visit # 4
Last Friday I visited Woodford to meet the crane operator (rob), the soil tester (garry) and a local concrete guy (dave). We checked the final position of the stairs, the soil, the view, the orientation and the levels with a string line, a compass, a laser level, a stake and a hammer.
Mainframe
And we are off – thank to Neil, Bill, Richard and George for a big weekend in the shed.
This is the mainframe supporting the stair, two large section with a bolted connection between.
Legs and stairs next.
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Stairway
The flight of stairs is made of a stack of hardwood already bull-nosed for stairs. Someone changed their mind. The stair tapers with the steel, but overhangs it on both sides. It is about 2m wide at the base and 1m at the tip. Richard and George are making this.
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Nuts and bolts
Built off site – transport dictates that we need to split the structure into pieces. Three frames with bolted connections, yellow shows extent of staircase. Thanks to Westera.
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Droop
Engineers can illustrate deflection in easy-to-read rainbow colours. They call it strand analysis. It is measuring the droop and looks alarming to me, but is only 32mm in total.
Steel/Neil
Suspending a timber staircase 14m in the air requires a bit of a structure, and for several reasons we have settled on steel.
Many of these reasons are Neil and his apprentice Luke, who are starting this weekend.
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Shed