A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 224
Pio. 52, … Fm. sn. the best examples of this arch. S<jmetimes it is hmlt withthe intrados and extradfjs concentric, and also with the 54 MASONRY. 8 intrados having a horseshoe form, and the extrados apointed form. The example given shows the latter methodof construction. At a is shown the center for the…
Architecture · Building
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