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A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...
State Route 236 (SR 236) is a state highway in the U.S. state of California. It is an approximately 18-mile (29 km) C-shaped loop route of State Route 9 in the Santa Cruz Mountains that serves Big Basin Redwoods State Park. SR 236 begins in the community of Boulder Creek and ends at Governor's Camp in Big Basin State Park near the Waterman Gap.
See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...
A spiral bridge, loop bridge, helix bridge, or pigtail bridge is a road bridge which loops over its own road, allowing the road to climb rapidly. This is useful in steep terrain, or where the approach road to a bridge would terminate too far from the bridge's end. Despite its name, the typical shape of a spiral bridge forms a helix, not a spiral.
The location of the State of Colorado in the United States of America.. This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Colorado.
The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: "sailor", from naus: "ship". Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article.
The Boulder Bridge is a historic bridge located in the Washington, D.C. portion of Rock Creek Park, an urban national park listed on the National Register of Historic Places. Boulder Bridge was constructed in 1902 and carries Beach Drive across Rock Creek , a tributary of the Potomac River .
A route's grade is provisional until enough climbers have repeated the route to have a "consensus". At the highest grades, this can take years as few climbers are capable of repeating these routes. For example, in 2001, Realization was considered the world's first 9a+ (5.15a), however, the first repeat of the 1996 route Open Air [ de ] , which ...