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Significance and Use
Riprap is commonly used to prevent erosion of underlying materials due to the effects of rain runoff, wind, flowing water, or wave action. The particle size distribution (mass of particles) is an important physical characteristic of riprap, as discussed in D 6825
These test methods can be used during evaluation of a potential source, as a means of product acceptance, or for assessment of existing installations. Method D is not recommended as a means of product acceptance.
Other characteristics of interest, such as particle shape, particle angularity, or visually evident rock durability characteristics may be determined during the performance of these test methods.
Interpretation of test results must consider the representativeness of the sample.
Note 2—The agency performing these test methods can be evaluated in accordance with Practice D 3740
1.1 These test methods cover the particle size and mass analysis of natural and man-made riprap and related materials, including filter stone or coarse bedding materials.
1.2 These test methods are generally intended for riprap and related materials. They are applicable for mixtures of stones screened from natural deposits, blast rock, processed materials from quarried rock, or recycled concrete. They are applicable for sizes 3 in. (75 mm) and above, with the upper size limited only by equipment available for handling and weighing the individual particles.
1.3 Four alternate procedures are provided. There is a wide range in the level of effort and the precision of the test procedures. It is important for specifiers to indicate the test procedure. Test reports should clearly indicate which procedure was used.Note 1
While conducting these test methods, it may be convenient to collect data on other attributes, such as the amount of slab pieces and deleterious materials.
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026
1.5 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units given in parentheses may be approximate.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
D422 Test Method for Particle-Size Analysis of Soils
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
D4992 Practice for Evaluation of Rock to be Used for Erosion Control
D5240 Test Method for Testing Rock Slabs to Evaluate Soundness of Riprap by Use of Sodium Sulfate or Magnesium Sulfate
D5312 Test Method for Evaluation of Durability of Rock for Erosion Control Under Freezing and Thawing Conditions
D5313 Test Method for Evaluation of Durability of Rock for Erosion Control Under Wetting and Drying Conditions
D6026 Practice for Using Significant Digits in Geotechnical Data
D6825 Guide for Placement of Riprap Revetments
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
ICS Number Code 19.120 (Particle size analysis. Sieving)
UNSPSC Code 11111600(Stone)