SHOULDER CONSTRUCTION PRACTICES IN MICHIGAN
MICHIGAN USES TWO GENERAL TYPES OF SHOULDERS: ONE OF TURF-COVERED EARTH AND GRAVEL EIGHT FEET WIDE, AND A SECOND WITH A TWO-FEET STRIP OF OILED AGGREGATE WITH THE OUTER EIGHT FEET OF TURF-COVERED EARTH. THE FIRST TYPE OF SHOULDER IS PROVIDED WITH A FIFTEEN-INCH GRANULAR SUBGRADE, WHERE PLASTIC SOILS OCCUR. THE UPPER SIX INCHES OF EARTH SURFACE SOIL IS IN ALL CASES STABILIZED BY ADDITION OF BINDER SOIL TO BANK-RUN GRAVEL OR OTHER GRANULAR SOIL MATERIALS. THIS MECHANICALLY STABILIZED SHOULDER SOIL IS SEEDED. THE SECOND TYPE OF SHOULDER IS SIMILAR TO THE FIRST EXCEPT FOR THE TWO-FOOT STRIP OF OILED AGGREGATE ADJACENT TO THE TRAFFIC SURFACE. SEEDING OF TURF-COVERED SHOULDER AREAS IN BOTH TYPES OF SHOULDERS IS DONE DURING THE FIRST SPRING SEEDING SEASON (APRIL OR MAY) FOLLOWING CONSTRUCTION. THE SHOULDER IS HARROWED TO A DEPTH OF ABOUT 3/4 INCHES, OR DEEPER, FERTILIZER IS HARROWED IN AND MULCH IS WORKED INTO THE LOOSENED SHOULDER SURFACE. ABOUT 50 POUNDS OF MIXED SEED IS THEN APPLIED AND ROLLED OR COVERED BY USE OF A CHAIN DRAG. /AUTHOR/
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Supplemental Notes:
- pp 72-79, 3 FIG. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Finney, E A
- Publication Date: 1949
Media Info
- Media Type: Digital/other
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Serial:
- Highway Research Board Roadside Development Committee Reports
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bituminous aggregates; Gravel; Road shoulders; Soil stabilization; Turf
- Old TRIS Terms: Shoulder stabilization
- Subject Areas: Design; Environment; Geotechnology; Highways;
Filing Info
- Accession Number: 00205012
- Record Type: Publication
- Report/Paper Numbers: pp 1-8
- Files: TRIS, TRB
- Created Date: Dec 6 1971 12:00AM