Purification of the Washington Water Supply |
Other editions - View all
Purification of the Washington Water Supply (Classic Reprint) Charles Moore No preview available - 2015 |
Purification of the Washington Water Supply: An Inquiry Held by Direction of ... Charles Moore No preview available - 2008 |
Common terms and phrases
acre per diem alum amount average bacterial efficiency bacteriological cement cent chemical Cincinnati clay coagulant Colonel MILLER committee concrete construction contractor cost cubic centimeter death rate December 27 District of Columbia effluent engineer officer English filters estimate experiments feet filter beds filter plant filtered water FULLER furnish gallons per acre give gravel HAZEN inches increase influent investigation layer material mechanical filter mechanical filtration mechanical system medical society MOORE necessary number of bacteria officer in charge operation period pipe Pittsburg Potomac River Potomac water practice pressure filters Professor MASON quantity rate of filtration raw water reduce reference removed reservoir River water sanitary satisfactory scraping sedimentation Senator MCMILLAN slow filters slow sand filter slow sand filtration surface suspended matter system of filtration tion turbid waters turbidity types of water typhoid fever washing Washington Aqueduct water purification water supply WESTON WOODWARD
Popular passages
Page 196 - A proposal by a person who affixes to his signature the word '' president," "secretary," "agent," or other designation, without disclosing his principal, is the proposal of the individual. That by a corporation should be signed with the name of the corporation, followed by the signature of the president, secretary or other person authorized to bind it in the matter, who should file evidence of his authority to do so.
Page 109 - California, and of the 12th section of the Act of Congress approved on the 31st of August, 1852, entitled An Act making appropriations for the Civil and Diplomatic expenses of the Government for the year ending the thirtieth of June, eighteen hundred and fifty-three and for other purposes...
Page 197 - Bidders or their authorized agents are expected to examine the maps and drawings in this office, which are open to their inspection, to visit the locality of the work, and to make their own estimates of the facilities and difficulties attending the execution of the proposed contract, including local conditions, uncertainty of weather, and all other contingencies.
Page 227 - The plans and specifications are intended to be explanatory of each other, but should any discrepancy appear, or any misunderstanding arise as to the import of anything contained in either, the explanation of the Engineer shall be final and binding on the Contractor...
Page 231 - ... per cent of water by weight. After being thoroughly mixed and worked for five minutes, the cement or mortar will be placed in the briquette mold in four equal layers...
Page 231 - A cement may be rejected in case it fails to meet any of the above requirements. An agent of the contractor may be present at the making of the tests, or, in case of the failure of any of them, they may be repeated in his presence.
Page 196 - If a bidder wishes to withdraw his proposal he may do so before the time fixed for the opening without prejudice to himself by communicating his purpose in writing to the officer who holds it, and, when reached, it shall be handed to him or his authorized agent unread.
Page 230 - The cement shall be considered to have acquired its initial set when the pat will bear, without appreciable indentation, the Gillmore Mm I needle ^ in.
Page 234 - ... so accepted and the amount for which the proper officer of the united States may contract with another party to furnish said articles and services, if the latter amount be in excess of the former.
Page 231 - ... presence. If the contractor so desires, the engineer officer in charge may, if he deem it to the interest of the United States, have any or all of the tests made or repeated at some recognized standard testing laboratory in the manner herein specified.