Chicago : Engineering and Contracting Pub. Co. · leaf 146
the weights given in thefollowing table: For Y2 in. inside diam., wt. per ft 84 lbs. For % in. inside diam., wt. per ft 1.12 lbs. For 1 in. inside diam., wt. per ft 1.67 lbs. For 2 in. inside diam., wt. per ft 3.66 lbs. For 2V4 in. inside diam., wt. per ft ~>.~7 lbs. For 3 in. inside diam., wt.… … tractor shall, at his own expense, re-excavatesuch portion in order to make good said de-fects. Measurements for the estimate of pipe willbe taken along the top of the pipe in a ver-tical plane passing through its axis; includ-ing all gate valves and standard specials, butomitting all special…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-95-84.webp)
