Arch 1�Lectures 1 and 2

Arch 1�Lectures 1 and 2 - (straight) Voussoir arch...

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Arch 1—Lecture 1 No Notes Arch 1—Lecture 2 Notes BACKGROUND INFO 3 Principles of Architecture Vitruvius—first one to say all arch contained 3 things o Firmitas (firmness)—buildings must stand up Structure Usually hidden 20 th  century it becomes more visible most important aspect must defy gravity foundation is essential buildings change over time—supposed to! o Utilitas (commodity)—buildings must have a function Function Built around its purpose The shape of the building comes from its function  and the machines within it o Venustas (delight)—buildings must delight in some way Delight on purpose or by accident? Should the builder be concerned with this? Building Techniques Stone on stone Mud on mud
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o Continuously changing due to weather Concrete o Modern version of mud o Re-enforced with iron rods Lintel     —holds up the wall above an opening such as a door or window 
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Unformatted text preview: (straight) Voussoir arch of angled stones that holds up the wall above an opening Relieving arch channels the load of the wall to the sides of the opening so it is not pressing on the lintel Corbelling stacked masonry with one course projecting beyond one below Barrel-vault arches lined up one after another; arch stretched into 3D; buttresses pick up sideways thrust Dome arch rotated 360 degrees; more difficult than barrel-vault because sideways thrust goes in all directions Balloon framing the frame can be seen and the spaces between the frame are filed with available material; all parts of the frame are working together; 2 floors built at once Platform framing easier to construct, less warping; floors are built one by one...
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Arch 1�Lectures 1 and 2 - (straight) Voussoir arch...

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