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2014-08-29_REVISION - M2001107
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2014-08-29_REVISION - M2001107
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Last modified
6/16/2021 6:28:21 PM
Creation date
8/29/2014 4:19:29 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M2001107
IBM Index Class Name
Revision
Doc Date
8/29/2014
Doc Name
Technical revision request TR08
From
J&T Consulting, Inc.
To
DRMS
Type & Sequence
TR8
Email Name
PSH
TAK
Media Type
D
Archive
No
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3. The Engineer will inform the Contractor of single sample test <br />results and the running average compacted density, The <br />Contractor shall immediately make adjustments in procedures as <br />necessary to maintain the dry density within the specified limits <br />of uniformity. <br />N. ROLLERS <br />Tamping Foot type rollers shall be used for compacting the clayey soils. The <br />rollers shall be capable of effectively achieving the required density for the entire <br />depth of the lifts being placed. The rollers shall be suitable for the material being <br />placed, capable of rates of production, which will not cause any delays to the <br />progress of the work. The length of each tamping foot shall sufficient to <br />penetrate the thickness of each loose lift. Each compactor shall be equipped with <br />cleaners on the drums so soil cannot building up and reduce the compactive <br />effort of the machine. <br />O. COMPACTION <br />When each layer or a portion of a layer of earthfill has been blended, leveled, <br />and conditioned to have the water contained therein distributed uniformly <br />throughout the layer, as detailed above, it shall be compacted by passing the <br />drum of a tamping roller over it a sufficient number passes (with a miminum <br />of 2 complete passes) to achieve the specified minimum allowable <br />compaction. On rough or irregular formation surfaces or formation surfaces <br />which could be damaged by tamping rollers, as determined by the Engineer, <br />the initial layer of earthfill shall be compacted with a rubber -tired roller <br />having a minimum wheel load of 25,000 pounds and tire pressure of 80 to <br />100 pounds per square inch. When compacted, the dry density of the earthfill <br />shall be uniform throughout the depth of the layer. Passes of the tamping <br />roller or rubber -tired roller shall be carried out so that the compactive effort <br />is uniformly distributed in a systematic manner over the entire layer. When <br />two- or four -drum, self - propelled rollers are used which have drums laterally <br />separated by the operator's cab and differential, the uncompacted central <br />portion of the roller path shall not be compacted until the outer portions of <br />the path have been fully compacted. <br />2. Where steep abutments, construction activities, or other factors make it <br />impractical or inefficient to complete the required number of drum passes <br />while maintaining the same direction of roller travel, additional passes as <br />needed to achieve compaction shall be performed by routing the tamping <br />rollers parallel to the obstructions as approved by the Engineer. Portions of <br />the earthfill which are not accessible to tamping rollers shall be specially <br />compacted with power tampers or other approved methods in accordance <br />with the provisions of this Section. <br />3. If, in the opinion of the Engineer, the compacted earthfill material has a <br />water content greater than allowed above, the earthfill material shall be <br />worked with a disk or other suitable equipment to reduce the water content <br />to the amount specified, shall be allowed to dry until such time as its water <br />NM Pit #1 Reservoir Liner - Technical Specifications Fill <br />31 2323- 10 <br />
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