Universal Portland Cement Co., C. W. Boynton · Universal Portland Cement Co. · leaf 19
Tyrcrl. CROSS SCCTIOP. PBVCr^E^nT^S ™- WP1LK5CITY PITTSBURGH. Figure 5. … SCCTlOn WRL_KTIU.C SUO-ORFMrt Figure 6. 20 Construction. In the construction of a walk, it is nec-essary that the foundation be so built that neither time nor theelements can change its ability to support the walk. Improperlyconstructed fills and poor sub-bases result in a great many…
