Norwich bulletin., 1911-03-23
CONDITIONS EXISTING IN NORWICH
Found by Engineers of National Board Fire Under writers in Various Directions for
 Better Protection Against FreStructural Conditions and Hazards.

b. A complete general plan Of the distribution system, showing. all mains. hydrants, valves and all service con- -nections over two inches in diameter.
 c. Card index records with details of all hydrants, valves and services
 Supply Works.
 8. That the construction of an addi- tional supply at Stony brook be com menced at once
 4. That the supply main from the Stony brook reservoir be at least 24 inches in diameter and. extend along West Main street to Washington square.
 ing Cove brook be put into operation at once and be operated day and night as long as there is any supply avail able or until Fairview reservoir is filled.
 6. That the protection to important districts be increased by the immedi- ate installation of the following mains: 12 inch along Water street from w. Main to Main.
 12 inch along Thames street from w. Main to Durham.
 {. 10 inch along Mount Pleasant street from w. Main to Thames.
 10 inch along North Main street from Main to present 10 inch main.
 10 inch along Boswell avenue, 124h street from Roath street to N. Main.
 inch along Sixth street from Bos- well avenue to North Main street.
 8 inch along Oakrtdge, Golden and Convent streets from Boswell avenue to N. Main street
 inch along Cedar and Court streets from Broad to Church.
 of the city be improved by the adop- ton of 8 inches as the minimum size of new mains for hydrant supply, and by the elimination of all 4 inch mains connecting up of dead ends and the installation of such additional mains follows;
 a. In outlying residential districts 1,500 gallons per minute. b. In well built up residential dis tricts 5000 gallons per minute.
 c. In manufacturing sections and the principal mercantile district 5000 gal Ions per minute.
 The above supply to be in excess of domestic consumption and to be avail able about any block or group of build ings. These quantities to be available at hydrant pressure of not less than turing districts and 60 pounds in resi- dential districts where such pressure can be obtained.
 Note.-The national board believes that it is essentially the business of each municipality to lay out its sys- tenn of distributing mains. as it is best able to judge of present and future consumption in each district, and of other local conditions involving paw ing, topography, pressures, size and type of lhydrant, etc.; but practical ex- perienee has shown that the above protection in districts such as are found in this city, and that a gridiron system of mains of the sizes recom- mended above is satisfactory only when cross-connected at all intersec- tions, free from dead ends, and with larger secondary cross-feeder mains at frequent intervals.
 Gate Valves. ' 8. That the distribution system be equipped with a suffcient number of gate valves, so located that no single case of accident, breakage or repairs to the pipe system iii important mer- cantile and manufacturing districts will necessitate shutting from service a length of main greater than the side of a single block or a maximum of 500 feet, or in other districts lengths greater than two sides of single block, or a maximum of 800 feet
 g That all gate valves be inspected at least once year and records kept of the inspection and of all valves op- erated.
 10. That the fire department be rloti- fled of the closing and opening of all valves affecting hydrant supply, copy of the notices to be kept on file.
 Hydrants.
 II. That additional hydrants be in- stalled so that there shall be:
 a. In important districts, two hy- drants at earh street intersection and Intermediate hydrants so that the dis tance between will not exceed 200 feet.
 b. In residential districts, one hy- drant at each street intersection and intermediate hydrants so that the dis tance between will not exceed $50 feet.
 12 That future installations of hy- drants have at least one 4 1-2 inch and inch barrel with foot valve having net area of not less than 20 square inches, and s inch gated connection to main.
 IS That all hydrants in service hav- ing 4 inch or smaller barrels and branches be replaced according to the foregoing specifications; this substitu- ton should be made at once in irn- portant mercantile and manufacturing districts, and in other sections accord ing to some well defined plan, by which all will be replaced within five years.
 IA. That measures be taken to con- merIt purposes, and cranes be provid- ed for filling sprinkler wagons.
 Is. That all hydrants be immediate ly put in good condition and all non- standard nipples replaced, and that all hydrantS be inspected at least twice a