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USACE / NAVFAC / AFCEC / NASA UFGS-31 23 00.00 (November 2021)
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Preparing Activity: USACE New
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated October 2022
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SECTION TABLE OF CONTENTS
DIVISION 31 - EARTHWORK
SECTION 31 23 00.00
TUNNEL EXCAVATION - BLASTING
11/21
PART 1 GENERAL
1.1 METHOD OF MEASUREMENT
1.2 BASIS OF PAYMENT
1.3 SCOPE
1.4 RELATED WORK SPECIFIED ELSEWHERE
1.5 REFERENCES
1.6 RELATED ATTACHMENTS AND SPECIFICATIONS
1.7 DEFINITIONS
1.7.1 Controlled Blasting
1.7.2 Airblast
1.7.3 Vibrations
1.7.4 Initial Support
1.7.5 Additional Initial Support
1.7.6 Final Lining
1.7.7 Design (Excavation) Line
1.7.7.1 A-line (Theoretical Excavation Line)
1.7.7.2 B-line (Pay Line)
1.7.8 Heading
1.7.9 Face
1.7.10 Forward Area
1.7.11 Initial Ground Support
1.7.12 Length of Advance Interval
1.7.13 Line Drilling
1.7.14 Excessive Overbreak
1.7.15 Over-Excavation
1.7.16 Probe Hole
1.7.17 Scaling
1.7.18 Shotcrete
1.7.19 Staged Excavation
1.7.20 Support Type
1.7.21 Tights or Underbreak
1.7.22 Water Sheet or Panning and Drain Hose
SECTION 31 23 00.00 Page 1
