s are centei^of gravity to the made of hard burned brick same point of attachment set in cement, and the of the string shall be triple voussoirs are arranged ac- the distance from the cen- cording to the line of pres- ter of pressure to the same sure. To.effect a saving of point of attachment. A… … equal to 3 P only. This soirs, so that when com- weight represents quite a pleted the crown sank 1"5 fig, 3. Orundriss aach a T) (mBg. S.) feeble tension, ' and one millimeters. The center- 1.: 135, which even quite a fine ing had to be arra.nged so cord could easily with- as not to interfere with…
