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5. Flat or needle shapes shall not be used unless the thickness of the piece is

more than one-third the length.

B. Grouted Rubble Rip-rap:

1. Provide portland cement mortar grouted rip-rap in locations as shown on the

Drawings.2. Stone shall meet all applicable requirements listed above for random rip-rap.

3. Consistency of the grout shall be approved by the KCS.

C. Geotextile Fabric:

When specified on the Plans, geotextile fabric shall be furnished and installed onsubgrade prior to placement of rip-rap. Geotextile fabric shall be Mirafi 1100 N or

approved equal 10 oz. non-woven fabric.

PART 3 - EXECUTION

3.1 PLACING

A. Subgrade: The subgrade for rip-rap bedding shall be prepared to the required lines

and grades. When the rip-rap is below normal stream level the subgrade shall bemucked out to the grade required. All loose material shall be removed.

B. Random Rip-rap:

1. The minimum total thickness of the rip-rap layer shall be 1.5 times greater

than the diameter of the maximum size rip-rap stone.

2. The stones shall be placed from the bottom of the embankment upward suchthat the weight of the stone is carried by the underlying material. The larger

stones shall be placed in the lower courses.3. Open joints shall be filled with spalls.

4. Rip-rap may be placed by equipment; however, care shall be taken in placing

to obtain a good gradation of material such that the rip-rap is firm and solid.Surfaces shall be barred to the required alignment and slopes. Large voids

shall be filled by hand placement of stone unless otherwise approved by the

KCS.5. When specified on the Plans, geotextile fabric shall be placed on the subgrade

prior to placement of rip-rap. This fabric shall be installed as described in

Section 02273 of these specifications. During placement of rip-rap onto thefabric, care should be taken to not puncture, tear, or otherwise damage theunderlying fabric.

C. Grouted Rip-rap:

1. Stones shall be placed as described above for random riprap and grouted with

portland cement mortar.

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2. Unless hand mixing is specifically approved by the KCS, grout shall be

machined mixed for not less than 1- minutes.

PART 4 COMPENSATION

4.1 Rip-rap shall be paid for at the unit price per ton complete and accepted in place, and shall

include all labor, materials, equipment, tools, and incidentals necessary for the satisfactorycompletion of the work. Tonnage will be determined based on delivery tickets obtained

from a certified scale.

4.2 No separate payment will be made for grout or geotextile fabric required for installation of

rip-rap. Both items shall be included under the unit price for rip-rap.

END OF SECTION