running an arch in situ
DESCRIPTION
Running an arch in situ. A opening was made to allow access to the new study. A opening was made to allow access to the new study. Plasterboards were fixed over the wall area. The width of the opening was drawn on the surface of the plasterboard. - PowerPoint PPT PresentationTRANSCRIPT
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ACA D WinchesterACA D Winchester 11
Running an arch in situRunning an arch in situ
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ACA D WinchesterACA D Winchester 22
A opening was made to allow access to the new study
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ACA D WinchesterACA D Winchester 33
A opening was made to allow access to the new study
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ACA D WinchesterACA D Winchester 44
Using a piece of string and a pencil The arch was spun from the centre point
The width of the opening was drawn on the surface of the plasterboard
Plasterboards were fixed over the wall area
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ACA D WinchesterACA D Winchester 55
Using a pad saw the arch was carefully cut out
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ACA D WinchesterACA D Winchester 66
Thin coat beads fitted to the arris
Plasterboards have been fixed to the inside of the arch
A coat of thistle bonding has been applied to level up the board, and marry into exiting plaster surface
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ACA D WinchesterACA D Winchester 77
•A coat of finishing plaster has been applied
•The surfaces have been married together
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ACA D WinchesterACA D Winchester 88
Top of the arch
”
R=14.5”
D = 29
R = Radius
D = Diameter
Spring line
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ACA D WinchesterACA D Winchester 99
D = 29
R=14.5”R=14.5”
R = RadiusD = Diameter
R=14.5”
Springing board
Pivot point
Centre for the fishtail gig stick
Dry wall screws used as anchor points
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ACA D WinchesterACA D Winchester 1010
gig stick with fishtail
Template
Stock Slipper
Angle Mould
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ACA D WinchesterACA D Winchester 1111
Pivot pointCentre for the fishtail gig stick
Dry wall screws used as anchor points
The slipper and gig stick are flush with the wall
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ACA D WinchesterACA D Winchester 1212
The mould is built up with three coat of plaster
•The angle mould is passed over the plaster
•Make sure that the mould is flush to the wall and the fishtail is located on the pivot point
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ACA D WinchesterACA D Winchester 1313
The mould is nearly built up
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ACA D WinchesterACA D Winchester 1414
•The semi circular arch is now run
•The springing board has been removed
The mould has been cut of at the spring line
The mould has been cut of at the spring line
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ACA D WinchesterACA D Winchester 1515
Running the styles
Relocate the angle mould on the finished section
When the mould is located fix the running rule with drywall screws
Then plumb down the rule and fix
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ACA D WinchesterACA D Winchester 1616
•Alterations have been to the angle mould
•The gig stick has been removed, and a second slipper has been added
•This will give the mould stability for running up the rule
Twin slipper mould
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ACA D WinchesterACA D Winchester 1717
•The gig stick has been removed, and a second slipper has been added
To gauge the distance between the slippers a piece of the running rule has been used
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ACA D WinchesterACA D Winchester 1818
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ACA D WinchesterACA D Winchester 1919
•Again the mould is built up with three coats of plaster
•The mould is run up and down the running rule
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ACA D WinchesterACA D Winchester 2020
•When the mould is run
•The running rule is removed
•The joint at the spring line is worked with a small tool and joint rule
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ACA D WinchesterACA D Winchester 2121
The same process is repeated on the other style
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ACA D WinchesterACA D Winchester 2222
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ACA D WinchesterACA D Winchester 2323