Downloaded from https://www.everyspec.com FM 34-54 9. CHANNEL (water tunnels). a. Cross-section dimensioned. b. Sides (material and thickness). c. Bottom (material and thickness). d. Normal depth. e. Normal current velocity. 10. ALIGNMENT. a. Horizontal (position, curve radius, and curve location). b. Vertical (grade percent, length, and location). 11. NUMBER OF MANWAYS. Dimensions and spacing. 12. OBSTACLE TUNNELED. 13. PORTAL. Design and material. 14. LINING MATERIAL. Type, thickness, condition, and points of change. 15. SHORING AND BRACING. a. Location and spacing. b. Design. c. Materials. d. Dimensions of members. e. Arrangement and spacing of members. 16.
STRUCTURAL DESIGN, MATERIALS, AND DIMENSIONS OF GALLERIES AND SNOWSHEDS. 17. GEOLOGICAL DATA. a. Material through which tunnel passes. b. Geology of adjacent areas. 18. OVERHEAD COVER. Material and depth. 19. DEMOLITION CHAMBERS. Location and dimensions. 20. VENTILATION. Description and adequacy. Figure I-6. Checklist-Underground Facilities (continued). I-19