Design
A hammerbeam roof allows a span greater than the length of any individual piece of timber. In place of a normal tie beam spanning the entire width of the roof, short beams, the 'hammer-beams', are supported by curved braces from the wall, and further structure is built on top of the hammerbeams. A hammerbeam structure can also be regarded as a simple form of truss. Hammerbeam roofs can exert considerable thrust on the walls that support them.
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“With wonderful art he grinds into paint for his picture all his moods and experiences, so that all his forces may be brought to the encounter. Apparently writing without a particular design or responsibility, setting down his soliloquies from time to time, taking advantage of all his humors, when at length the hour comes to declare himself, he puts down in plain English, without quotation marks, what he, Thomas Carlyle, is ready to defend in the face of the world.”
—Henry David Thoreau (1817–1862)