Chicago : Engineering and Contracting Pub. Co. · leaf 117
y of gray iron, re- No plugging or stopping of holes will be al-lowed. All castings that fall short more than0 per cent in weight, from those required bythe plans, will be rejected. All castings, afterbeing approved by the city engineer, are to becoated with asphaltum by dipping the sameinto a bath…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-461-266.webp)
