ROADWAY EXCAVATION
PART 1 GENERAL
1.1SECTION INCLUDES
A.Excavation and disposal of all material within designated areas.
B.Rock excavation and removal.
1.2RELATED SECTIONS
A.Section 02056: Embankment, Borrow, and Backfill
1.3REFERENCES
A.National Fire Protection Association (NFPA) Codes and Standards
B.OSHA Construction Standards
1.4DEFINITIONS
A.Rock – Material that cannot be excavated and removed without blasting,
chipping, cutting, or ripping.
1.5SUBMITTALS
A.Blasting plan for review. Include at least the following:
1.Map of blasting area showing limits and placement of explosives.
2.Proposed methods of blasting
3.Delay pattern
4.Explosive types
5.Type of blasting mat cover
B.Qualifications of explosive expert, for review. Include at least the following:
1.A copy of the Certification for Coal Mine Surface Blasters
C.Copies of disposal permits, agreements, or both, for information.
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D.Request to dispose of excavated pavement in the right-of-way, as needed,
for review.
1.6EXPLOSIVE EXPERT REQUIREMENTS
A.Explosives expert must have the Utah Department of Natural Resources
Certification for Coal Mine Surface Blasters before working on the project.
PART 2 PRODUCTS
2.1EXPLOSIVES
A.Refer to NFPA 495 – Explosive Materials Code.
PART 3 EXECUTION
3.1PREPARATION AND PROTECTION
A.Locate and protect utilities as necessary.
B.Complete clearing, grubbing, stripping and stockpiling of topsoil
before starting roadway excavation.
3.2BLASTING MATERIAL STORAGE
A.Store all explosives securely in compliance with Laws and Regulations.
Refer to NFPA 495: Explosive Materials Code.
B.Mark all storage places clearly.
3.3DEWATERING
A.Keep excavation free from surface and ground water through all stages of
construction.
1.Maintain adequate drainage through pumping, pipe culverts,
and drainage ditches.
2.Provide temporary facilities when interrupting items such as
irrigation systems, sewers, and under drainages.
3.4EXCAVATION – STANDARD PROCEDURES
A.Excavate material as shown to reasonably smooth and uniform surface.
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B.Provide and maintain satisfactory access to roads, streets, and adjacent
property during all phases of construction according to the Traffic Control Plan.
C.Remove material in all cut sections to the depth shown.
1.Scarify to an 8 inch depth and compact subgrade to at least 90
percent of maximum laboratory density before placing pavement section.
D.Excavate and dispose of unsuitable and excess material.
E.Over excavate unsuitable material as directed by the Engineer.
3.5ROCK REMOVAL – NONEXPLOSIVE METHOD
A.Excavate solid rock 6 inches to 1 ft below subgrade.
3.6ROCK REMOVAL – EXPLOSIVE METHOD
A.Comply with OSHA Constructions Standards 1926 Subpart U - Blasting
and the Use of Explosives.
B.Comply with NFPA 495 – Explosive Materials Code.
C.Provide an explosives expert to act as an advisor and consultant during
drilling and blasting operations.
D.Do not blast beyond designated areas.
3.7ROCK FACES
A.Scale rock cuts of all loose rocks and fragments and leave in a neat and
safe condition.
3.8PAVEMENT
A.Cut existing pavement on the designated lines with straight vertical edges
free from irregularities when joining new construction to existing pavement. Refer to Section 02705.
B.Excavate pavement as shown.
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C.Dispose of pavement according one of the following:
1.Inside the right-of-way as embankment, subject to the
authorization of the Engineer. Refer to Section 02056.
2.Outside the right-of-way in accordance to all applicable rules and
regulations.
END OF SECTION
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Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 274–277 of 1,331.
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