Chicago : Engineering and Contracting Pub. Co. · leaf 667
ground where breast boarding is unneces-sary. The method of driving the spiling,however, is the same in both cases. In Fig. 6 the timbers are shown ready forthe drives with the breast boards in placeand numbered from 1 to 30. These breastboards should be cut two different lengths-one short and one… … Fig. 8. rig. 9. Fig. 10. !., iiy, to II will generally suffice. Inplace* where the Krntind is fairly solid alltroubles may I»«- overcome by simply drivingspiling. In more severe rases I lie breast placed over the rap ami supported by blocksbetween cap and bridge These blocks mustbe wide enough to…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
