Sieve Size Percent Passing by Weight
¥4-inch 100
No. 4 60 - 100
No. 10 40-95
No. 40 5-50
No. 100 0-17
No. 200 0-10
Drainage Sand shall provide a hydraulic conductivity greater than 1x10-+
cm/sec as measured by ASTM D2434.
Drainage Sand shall contain no more than 15 percent calcium carbonate as
measured by ASTM D4373.
2.9 CRUSHED STONE
A.
Crushed Stone to be placed around the secondary and primary leachate
collection pipes shall meet the requirements of #57 aggregate as specified in
Section 703 of the NHDOT Specifications.
Crushed Stone to be placed under buildings, manholes, and other similar
structures shall meet the requirements of #67 aggregate as specified in Section
703 of the NHDOT Specifications.
2.6 RIPRAP
A.
Stone used for Riprap shall be hard, durable, angular in shape; resistant to
weathering and to water action; free from overburden, spoil, and organic
materials; and shall meet the gradation requirements specified.
Neither breadth nor thickness of a single stone should be less than one-third
(4) its length. Rounded stone or boulders will not be accepted unless
authorized by ENGINEER and OWNER.
The sources from which Riprap will be obtained shall be selected well in
advance of the time when the material will be required in the Work. The
acceptability of the material will be determined by service records for similar
stone and/or by suitable tests. If testing is required, suitable samples of stone
shall be taken in the presence of the CQA Consultant at least fourteen (14) days
in advance of the time when the placing of Riprap is expected to begin. The
approval of some rock fragments from a particular quarry shall not be
construed as constituting the approval of all rock fragments taken from the
quarry.
File No. 3066.09 Earthwork 02200 - 4 of 14 December 2017
