Storm Sewers Jacked in Place Art. 552.04 Trench backfill will be paid for according to Article 208.04. Removal and replacement of unsuitable material below plan bedding grade will be paid for according to Article 109.04. SECTION 552. STORM SEWERS JACKED IN PLACE
552.01 Description. This work shall consist of installing, by jacking, storm
sewers of the required inside diameter at locations shown on the plans.
552.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe (Note 1) .... 1042
b.Reinforced Concrete Elliptical Culvert, Storm Drain, and Sewer Pipe (Note 1) ............................................................................... 1042
c.Grout (Note 2) .................................................................................... 1024.01
d.Steel Casing .................................................................................. 1006.05(d)
e.Reinforcement Bars and Welded Wire Reinforcement ...................... 1006.10
f.Mastic Joint Sealer for Pipe .................................................................... 1055 Note 1. Tongue and groove type joint. Not less than a Class IV Pipe. Note 2. The grout mixture shall be one part cement and two parts sand mixed with water.
552.03 Traffic Control. The road shall be kept open to traffic according to
Article 701 — 17(d)(3).
CONSTRUCTION REQUIREMENTS
552.04 General. Storm sewers shall be jacked in a continuous operation.
The construction may be accomplished by jacking the storm sewer, or if the Contractor elects, a metal casing of sufficient strength and size first, then the storm sewer installed inside the casing. If the casing is used, it shall remain in place to support the embankment, and the voids between the liner and the sewer pipe shall be completely filled with sand or grout mixture as approved by the Engineer. The diameter of the metal casing, if used, shall not exceed the outside diameter of the storm sewer by more than 6 in. (150 mm). The Contractor may shorten the length of storm sewer to be jacked by open cutting and sheeting, shoring or bracing the excavation outside the roadway limits. No open cutting shall be permitted inside the shoulder lines. If continuous jacking operation cannot be maintained, the Contractor shall take the necessary precautions to not allow the jacked pipe to become fixed in place. The Contractor shall provide details of the anticipated installation method and equipment. Installation details shall be provided for each location shown in the plans and include (1) the method proposed and a step-by-step installation sequence,
2.drive and receiving pit details including location, size, shoring, and thrust wall Art. 552.04 Storm Sewers Jacked in Place information, (3) if a casing is used, casing type, size, and joints, (4) pipe type, supplier, and joint details including joint deflection tolerance, (5) method of controlling and monitoring grade, alignment, and joint deflection, (6) method of lubrication and lubricant, (7) method of groundwater control and preventing soil collapse,
8.excavated soil removal, (9) parameters monitored and recorded during installation, and (10) method of filling voids suspected between the pipe/casing and ground, and method of filling the annular space between pipe and casing. The types, sizes, and number of jacks, jacking pit, and other equipment used shall be such as to exert sufficient force to overcome the greatest resistance to be encountered, considering both weight of the pipe or casing and the friction on its exterior surface. Lubricants, if required, may be used to decrease the frictional resistance on the exterior surface of the pipe being jacked. Suitable lubricants may be applied directly to the surface or through 1/2 in. (13 mm) nipples through holes drilled in the cutting shield at the lead pipe. Care shall be taken in arranging the jacking equipment and struts to ensure that thrust is applied parallel with the centerline of the pipe or casing or as approved by the Engineer. A jacking head or collar shall be used to apply pressure from the jack to the pipe or casing. Pressure applied with the metal of the jack in direct contact with concrete pipe will not be permitted. A cutting edge at least 1/2 in. (13 mm) greater in diameter than the pipe or casing being jacked shall be provided for the leading pipe or casing. The upper half of the cutting edge shall project beyond the pipe or casing end to support the embankment. Excavation within the jacked pipe or casing shall be performed in such a manner as to not increase the excavated diameter larger than the pipe or casing being jacked. Excavation shall not be carried beyond the end of the cutting edge of the pipe or casing. Holes provided in the lead pipe to attach the cutting edge shall be filled with plug and mastic as approved by the Engineer after completion of the jacking operation and removal of cutting edge. Excess excavated soil shall be disposed of according to Article 202.03.
552.05 Joints. As each succeeding pipe section is placed against the
previously jacked pipe, a 1/2 in. (13 mm) manila rope or other suitable material shall be inserted throughout the entire groove of the joint and set in place with mastic. The opening on the inside of the pipe shall be mortared with a mixture composed of one part cement to three parts sand, by volume, based on dry materials, after the complete sewer has been jacked in place. Any other method of jointing must be approved by the Engineer prior to the start of construction.
552.06 Accuracy of Placement. The alignment and elevation of the forward
end of the pipe shall be checked at regular intervals as work proceeds and appropriate measures immediately taken to correct any observed deviation. When the Contractor elects to jack a metal casing prior to installing the storm sewer, all earth and other foreign material shall be removed from inside the casing. The storm sewer sections shall be installed by jacking the sections through the casing.
552.07 Method of Measurement. This work will be measured for payment in
place in feet (meters). Cast Iron Soil Pipe Art. 560.05 Excavation in rock will be measured for payment according to Article 502.12.
552.08 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for STORM SEWERS JACKED IN PLACE, of the diameter or equivalent round size specified. Excavation in rock will be paid for according to Article 502.13. UTILITIES SECTION 560. CAST IRON SOIL PIPE
560.01 Description. This work shall consist of constructing a cast iron soil
pipe.
560.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Cast Iron Soil Pipe ............................................................................. 1006.20 CONSTRUCTION REQUIREMENTS
560.03 General. Construction requirements shall be according to Section 550
with the following exceptions. The pipe shall be laid with its spigot end lacking 1/4 in. (6 mm) of being driven full into the bell. Gaskets of clean, sound hemp yarn braided or twisted and tightly driven shall be used to pack the joints, followed by caulking with pure soft lead of the best quality for the purpose, so as to make a tight and permanent joint. All pipes shall be carefully cleaned before laying, and shall be left clean and in working order. The pipe shall have a solid bearing throughout its entire length. If it becomes necessary to cut the pipe, it shall be cut in such a manner that the ends will be square with the axis of the pipe.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 514–516 of 1,217. View official source ↗