outer case, two inches in thickness. The shoulder, more- doors. guished from that of the caisson. over, gives room to shore up if it should be necessary. As the material is excavated the caisson will sink Preparatory to launching the caisson, the river bot- The roof of the working chamber is five… … upper layers being framed in these operations is in carefully between the quite extensive, as will CONSTEUCTION OF CAISSON, SHOWING STEEL TRUSSES ABOVE THE EOOF. struts and ties of the be seen from our front trusses. The timbers of the page engraving. By a whole caisson, both walls and roof, are…
Patents · Munn · Bicycle · Apparatus · Caisson · Scientific American · Cents · Large number · Gas engine · American association · Crookes tube · Sewing machine · Presser foot · Working chamber · Perspective elevations · Custom house
Internet Archive · Public domain (published before 1931). Free to use for anything.
