Digital data for construction material sources reported by the Arizona Department of Transportation in 1977 for Maricopa County, Arizona

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-122/metadata.faq.html
Description The data set marpits1 is an ArcInfo coverage of point features representing pit locations and attribution data captured from an atlas of map sheets and pit data sheets titled "A Materials Inventory of Maricopa County [Arizona]" by the Arizona Highway Dep
Originators Hirschberg, Douglas M.; Pitts, G. Stephen; Melcher, Henry L.; and Bliss, James D.
Publication U.S. Geological Survey Open-File Report 01-122

Related topics

States or counties

Overview of attributes

>
>ITEMS IN MARPITS1.PAT:
>
>COLUMN   ITEM NAME     WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                4    12     F      3
>    5  PERIMETER           4    12     F      3
>    9  MARPITS1#           4     5     B      -
>   13  MARPITS1-ID         4     5     B      -
>   17  PITNUM              5     6     C      -
>   22  ORDER               4     5     I      -
>   26  MAP                 2     3     C      -
>   28  QTR                 2     3     C      -
>   30  SEC                 2     3     C      -
>   32  TWP                 3     4     C      -
>   35  RNG                 3     4     C      -
>   38  HI_CLASS            4     5     C      -
>   42  MATERIAL           30    31     C      -
>   72  PI                  4     5     C      -
>   76  ABR_500             4     5     I      -
>   80  SWELL_24            7     8     N      2
>   87  THR_QTR             4     5     I      -
>   91  NUM_4               4     5     I      -
>   95  NUM_8               4     5     I      -
>   99  NUM_40              4     5     I      -
>  103  NUM_200             4     5     I      -
>  107  SOURCE              4     4     I      -
>
> BRIEF EXPLANATION OF ITEMS ADDED BY THE AUTHORS TO THE
> MARPITS1 POINT DATA SET:
> (items automatically generated by ArcInfo not detailed)
>---------------------------------------------------------
> PITNUM -The pit number of the location.
>
> ORDER -The ascending numeric order of the pit number.
>
> MAP -The map sheet (from Source) of the pit.
>
> QTR -Public Land Survey quarter-section or half-section of
>      the pit location.  nw = northwest, ne = northeast,
>      sw = southwest, se = southeast, w2 = western-half,
>      n2 = northern-half and so on.
>
> SEC -Public Land Survey section of the pit location.
>
> TWP -Public Land Survey township of the pit location.
>
> RNG -Public Land Survey range of the pit location.
>
> HI_CLASS -Highest classification for material found in the pit.
>           The following are the highest class designations for
>           test data representing at least half or more of the
>           total depth of the pit:
>           MA--mineral aggregate
>           AB--aggregate base
>           SM--select material
>           BR--borrow, no limits set
>           CM--cover material (no specification provided)
>           SB--special backfill (no specification provided)
>           SS--subgrade seal
>           UK--unknown
>
> MATERIAL -Material types (clay, sand, gravel, caliche, etc.
>           Abreviations used for various materials found in
>           each pit: [Classification scheme includes a mix of
>           material types (ash, caliche, cinder, clay) and
>           classification of material by size (boulders, silty)]
>           ASH--ash; AND--andesite; BLDR--boulders;
>           BST--basalt, malpais; CAL--caliche; CDR--cinders;
>           CGM--conglomerate; CKR-clinkers; CLY--clay;
>           COB--cobbles; DEC--decomposed; DIRT--dirt;
>           GTE--granite; GVL--gravel; GYP--gypsum; LAV--lava;
>           LOM--loam; LST--limestone; PUM--pumice; RCK--rock;
>           RHY--rhyolite; SH--shale; SLT--silt; SLTY--silty;
>           SND--sand; SS--sandstone; TRAV--travertine
>         *Note that many of these abbreviations may not be
>          found in the data as this list is applicable to data
>          for all counties for which data has been collected.
>
> PI -(Plasticity Index) A measure of sensitivity that aggregate
>     has to moisture change and is important when aggregate is
>     used in Portland cement or asphalt concrete. White (1991,
>     p. 13-42) defines PI as "the difference in the Atterberg
>     liquid limit and plastic limit moisture contents." It is a
>     value without a unit.  A PI of 4 is the maximum allowed as
>     stipulated in American Society of Testing Material (ASTM)
>     test D 3515 for materials used in asphalt concrete mixtures
>     (White, 1991). The Arizona Highway Department (1972) used
>      several PI standards.  These include ones where PI was not
>     detected or was to be less than 5 or 10 depending on
>     aggregate classification.  Testing was to be executed in
>     accordance with the requirements of American Association
>     of State Highway and Transportation Officers T 90
>     (AHD, 1972).  Maximum allowable PI values are dependent on
>     which of the 50 categories of aggregate types are in effect.
>     When testing determined no PI, a "NP" (no plasticity) was
>     entered in the ADOT (1977) table. The Open-File Report
>     authors have changed all these "NP" to zero and entered
>     -999 when fields were without values.
>
> ABR_500 -Los Angeles (LA) abrasion test (500 rotations).
>          The test used to evaluate the resistance of a coarse
>          aggregate to degradation by abrasion and impact is the
>          Los Angeles abrasion test (Meyer and Zeinak 1991).
>          In accordance with ADOT (1990, p. 718) standard
>          specifications "the percent of wear of coarse aggregate
>          at 500 revolutions, when tested in accordance with the
>          requirements of American Association of State Highway
>          Transportation Officials (AASHTO) test T 96, shall not
>          exceed 40."  The same requirement is also specified for
>          the class of aggregate 1 to 4 for material used in
>          subbases and bases (ADOT, 1990, p. 140).  The detail of
>          Los Angeles abrasion testing procedures may have
>          changed so the results found in this data release may
>          not be consistent with current specifications.
>          Los Angeles abrasion test results are found in just 8
>          percent of the pits listed in the inventory.
>
> SWELL_24 -Volume change--swell (24 hours).
>           Data are available giving maximum 24-hour volume
>           change (AHD, 1972).  Procedures and standards
>           applicable at the time of the test are not given in
>           the inventory but likely may have been AASHTO 101,
>           Method B (AHD, 1972, Table 703-1 and 704-1).  These
>           specifications set the maximum allowed volume increase
>           to 0.06.  This is the maximum for all classes of
>           mineral aggregate and one class of aggregate used for
>           cover materials and slurry seal.
>
> THR_QTR -Percent material passing the 3/4 inch sieve. Materials
>          passing the 3/4 inch mesh sieve are 19 mm or less.
>
> NUM_4 -Percent material passing the no. 4 sieve. Materials
>        passing the no. 4 mesh sieve are 4.75 mm or less.
>
> NUM_8 -Percent material passing the no. 8 sieve. Materials
>        passing the no. 8 mesh sieve are 2.338 mm or less.
>
> NUM_40 -Percent material passing the no. 40 sieve. Materials
>         passing the no. 40 mesh sieve are 0.42 mm or less.
>
> NUM_200 -Percent material passing the no. 200 sieve. Materials
>          passing the no. 200 mesh sieve are less than 0.074 mm.
>
> SOURCE  -Numeric value that relates to marpits1.ref look-up
>          table giving information on the Source.
>

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