Impost arch - projecting course at upper part of a pier and abutment to stress the springing line. The arch may be defined as a mechanical arrangements of wedge shaped blocks of stone or bricks which mutually support each other and entire arch is supported at ends by piers or abutments. The wedge shaped units are so arranged together along a curve line that they balance their own weight by mutual pressure and exert a vertical pressure only which can be sustained by support below. - Study24x7
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03 Apr 2019 11:49 AM study24x7 study24x7

Impost arch - projecting course at upper part of a pier and abutment to stress the springing line. The arch may be defined as a mechanical arrangements of wedge shaped blocks of stone or bricks which mutually support each other and entire arch is supported at ends by piers or ab...

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