Show tim TIE capitol dome at washington is the only considerable dome iron in the world it is a vast va tt hollow sphere weighing pounds po ilow how much is that more than tons or almost tile the weight of full grown persons or about equal to 1000 coal cars of four tons each which if strung out one behind the other would occupy a mile and a half of track on the very top of the dome the allegorical figure america weighing wei abing pounds lifts its proud head high in air tho pressure of this dome and figure upon the giors and pillars is pounds to the square foot it would however require a pressure of 7 53 SO pounds to the square foot to cr crush ush the supports orts of the dome the cost of this immense dome was little short of |