. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. Maxims and Instructions. 299 PIPING AND DRAINAGE. The three illustratious on page 298 are designed to representtraps set in lead pipe and show vividly the difference betweenthis material and iron piping. Lead is one of the elementary substances of which the worldis formed; it ranks with gold, silver, tin, etc., in being anunmixed metal. It melts at about 617° Fahi-enhoit, and is,bulk for bulk, lli% heavier than water (gold being I?/;; heavierand wrought iron 7i5 heavier). The
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. Maxims and Instructions. 299 PIPING AND DRAINAGE. The three illustratious on page 298 are designed to representtraps set in lead pipe and show vividly the difference betweenthis material and iron piping. Lead is one of the elementary substances of which the worldis formed; it ranks with gold, silver, tin, etc., in being anunmixed metal. It melts at about 617° Fahi-enhoit, and is,bulk for bulk, lli% heavier than water (gold being I?/;; heavierand wrought iron 7i5 heavier). The tenacity of lead isextremely low, a wire Tsth of an inch breaks with a weight of Fig. 159,. 28 lbs.; in comparison, its tenacity is only one-twentieth thatof iron; it is so soft that it may be scratched with the thumbnail. If a very strong heat is applied lead boils and evaporates;it transmits heat very slowly; of seven common metals it is theworst conductor, therefore it is good for hot water with a sufficient quantity of quicksilver it remains advantage to be found in the use of lead is its durabilityand comparative freedom from repairs. In London, soil anddrain water pipes which have been fixed 300 to 500 years are as ^00 Maxims and Instructions. PIPING AND DRAINAGE,good now as the day they were first made—while iron pipecannot be expected to last over 10 or 20 years or 30 at theutmost. Fig. 159 represents the general system of house piping anddrainage applicable also to shops, public buildings, etc. Aexhibits the drain or sewer. A-C represents the sewer connec-tion, so called with a running trap, B. ** 0 at the end of thelower pipe exhibits a soil
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
