Building Construction

171) which is known as the outer curve of the arch.

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extrados

172) The highest point on the extrados of the arch is known as

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crown

173) The wedge shaped units of masonry forming an arch are called

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voussiors

174) The inclined surface on the abutment which acts as a seat for the arch is known as

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skew back

175) An arch which is formed by two arcs of circles meeting at the apex point is known as

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pointed arch

176) If the centre of the arch lies on the springing line, it is

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semi-circular arch

177) If the centre of arch lies below the springing line, it is

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segmental arch

178) An arch which is constructed either on a flat arch or on a wooden lintel to provide greater strength is called

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relieving arch

179) The portion of the wall which supports an arch is termed as

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abutment

180) The lower half of the arch between the crown and the skew-back is known as

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haunch

Subject Notes

Objective Box

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