619.01 619-1 SECTI ON 619 WATER LINES DESCRIPTION
619.01 This work consists of the construction of water lines per these specifications, the latest
revision of the American Water Works Association (AWWA) Standards and in conformity with the lines and grades shown on the plans or established. This work also includes furnishing pipe and installing it by jacking it into place at the location and in conformity with the lines and grades shown on the plans. MATERIALS
619.02 Materials shall meet the requirements specified in the following subsections:
Cast Iron Pipe 716.01 Welded Steel Pipe 716.02 Galvanized Pipe 716.03 Copper Pipe 716.04 Plastic Pipe 716.05 Valves and Valve Boxes 716.07 Specific type of material, when required, will be shown on the plans or as designated. The maximum working water pressure will be shown on the plans. Welded steel pipe, when used as a casing and not as a carrier pipe, will not require full depth welds or welds from both sides, and will not require coatings. Sections of the casing shall be welded firmly together on the inside to prevent separation. Certification of the welder/operator will not be required. CONSTRUCTION REQUIREMENTS
619.03 Trench shall be excavated to a width sufficient to allow for proper jointing of the water
line and thorough compaction of the backfill material per Section 206. Where ground water occurs, the bottom of the trench shall be kept free of water during pipe laying and until backfilled. Backfilling shall consist of suitable materials uniformly distributed in layers of not more than 8 inches. Each layer shall be thoroughly compacted as required. All joints, connections, valves and fittings shall be watertight.
a.Jacked Pipe. The term “jacking” as used shall mean jacking, boring,' or other approved construction methods. Method of installing pipe other than jacking may be used only with written approval from the Engineer. Trenching, jetting, or any other method that may cause damage to the embankment or highway area, or be hazardous to the traveling public, will not be permitted. When jacking is specified, the pipe must be jacked without disrupting highway traffic. 619.04 619-2 The sides of the jacking pit shall be supported in such a manner as to prevent any movement or slippage of the earth during the jacking operations . A jacking frame shall be constructed of guide timbers or rails to the exact line and grade of the casing and shall be capable of maintaining the desired alignment and gradient throughout the jacking operation. Depending upon the soil conditions, the excavation operation inside the pipe shall proceed approximately 1 foot ahead of the lead pipe. The excavation around the pipe shall be cut accurately to line and grade and as reasonably close to the outside diameter of the pipe as possible. Each section of pipe in its final position shall be straight and true in alignment and grade. Deviation in alignment and grade from beginning to end of the jacked pipe shall not exceed plus or minus 0.3 foot per 100 feet of length.
b.Reserved METHOD OF MEASUREMENT
619.04 Water lines of the various types and sizes will be measured by the linear foot in
place and shall include all fittings. Valves , including valve boxes, will be measured by the actual number of the specified type and size used in the completed water lines and accepted. The quantity of jacked pipe will be measured by the linear foot complete in place and accepted. BASIS OF PAYMENT
619.05 The accepted quantities of water line will be paid for at the contract unit price for
each of the pay items listed below that appear in the bid schedule. Payment will be made under: Pay Item Pay Unit ______ Inch Cast Iron Pipe Linear Foot ______ Inch Welded Steel Pipe Linear Foot ______ Inch Galvanized Pipe Linear Foot ______ Inch Copper Pipe Linear Foot ______ Inch Plastic Pipe Linear Foot ______ Inch (Type) Valve and Valve Box Each ______ Inch Welded Steel Pipe (Jacked) Linear Foot Structure excavation and structure backfill for lines 12 inch and less will not be measured and paid for separately but shall be included in the work. Structure excavation and structure backfill for lines larger than 12 inch will be measured and paid for per Section 206. All work incidental to installing jacked pipe will not be measured and paid for separately but shall be included in the work. 620.01 620-1 SECTION 620 FIELD FACILITIES DESCRIPTION
620.01 The Contractor shall furnish field offices, sanitary facilities and field laboratories when
called for on the plans or as directed. These units are to be maintained by the Contractor and shall be removed when the project is completed unless released earlier by the Engin eer. MATERIALS
620.02 Field Offices . Field offices, either Class 1 or Class 2 as designated on the plans, shall
substantially conform to the details shown on the plans and to the requirements of this section. The field office shall be equipped with a facsimile machine, copy machine, and telephone service that conform to the following:
1.Facsimile Machine. The facsimile machine shall print on plain paper and shall be capable of sending 8 1/2 x 11-inch and 8 1/2 x 14-inch documents. The Contractor shall install and maintain the fax machine in the Engineer ’s field office. Should the fax require repair and be out of service for more than 24 hours, a replacement machine shall be supplied within 24 hours. The Contractor shall supply all necessary supplies, except paper, and a roll- around stand. Paper will b e provided by the Department .
2.Copy Machine. The Contractor shall provide a self -feeding plain paper photocopier , capable of making at least eight copies per minute. Copier shall also be capable of reproducing copies at standard sizes up to and including 11 x 17 inches. The copier shall be capable of reducing 11 x 17 plan sheets to 8 1/2 x 14 legal size and to 8 1/2 x 11 letter size. The Contractor shall supply all necessary supplies, except paper, and a roll- around stand. Paper will be provided by the Department. The Contractor shall maintain all furnished equipment in good working condition and shall provide replacement equipment due to breakage, damage, or theft within five workdays .
3.Telephone Service. The Contractor shall provide telephone service as required by standard plans. This service shall include a long -distance carrier. The Department will be responsible for actual long distance toll charges.
620.03 Field Laboratories . Field laboratories, either Class 1 or Class 2 as designated on the
plans, shall substantially conform to the details shown on the plans and to the requirements of this section. Each laboratory shall be qualified per CP 10.
620.04 Commercial Plant Laboratory. The plant laboratory at the site of the commercial hot
mix plant shall consist of weatherproof, insulated, mobile house- type trailer or other approved structure having equipment meeting the following minimum requirements.
Source: Colorado Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 731–732 of 943.