Vertical clearance. Minimum vertical clearance should be 4.5 metres, which is the requirement for safe passage of standard ISO containers. However, in cases where sufficient clearance cannot be secured because of the high cost of rebuilding existing structures such as bridges, gooseneck trailers with low vehicle bed clearance may be used.
Vertical clearance. The minimum vertical clearance value is 4.90 m. This will permit trucks to pass safely through tunnels and under bridges. In the case of pedestrian bridges and signboard trusses, the vertical clearance should be no less than 5.10 m. It is preferable to allow an additional tolerance to permit future paving on the order of 0.15 m.
Vertical clearance. The van accessible parking spaces are inaccessible because the garage entrance has a vertical clearance of 91 inches. Provide a van accessible space that is outside but within proximity to the garage. P9 24 months
Vertical clearance. Any proposed use of public rights-of-way for private purposes shall maintain a minimum seven feet of vertical clearance distance from the sidewalk grade.
Vertical clearance. (1) Walks shall have 80 inches minimum clear headroom. [ADAAG 4.4.2 and Title 24 1133B.8.6.2] It should be noted that the Manual on Uniform Traffic Control Devices (MUTCD) requires a vertical clearance at pedestrian pathways to the bottom of signs to be at least 7 feet. This will cover most pedestrian vertical clearance needs. Pedestrian pathways that are part of a shared facility, i.e., bicyclists and equestrians, shall follow the appropriate guidance in the Highway Design Manual. See Section 4.4, “Shared Facilities” of this DIB for further information.
Vertical clearance. A minimum of 10 feet of vertical clearance is required over the Trail and its shoulders.
Vertical clearance. A. The minimum vertical clearance of the Kâhasinîskâk Bridge over Xxxxxxx Road shall be 6.0 m. 4-3.7.3
Vertical clearance. The Contractor shall verify elevations and clearances from its construction benchmarks prior to erecting scaffolding or protective xxxxxxx, in order to ensure that the minimum vertical clearance will be maintained.
Vertical clearance. All fire apparatus access roads shall have an unob- structed vertical clearance of not less than 13 feet 6 inches. EXCEPTION: Upon approval vertical clearance may be reduced.provided such reduction does not impair access by fire apparatus and approved signs are installed and maintained indicating the established vertical clearance. (g)11urning Radius.The turning radius of a fire apparatus access road shall be as approved by the chief. (h)
Vertical clearance. The clear height of structures shall not be degraded to less than 4.9 m over the entire roadway width, including the usable width of shoulder. Existing clearances of less than 4.9 m but greater than 4.3 m shall not be degraded. The clear height shall not be less than 4.3 m in any case. • Bridge Width A decision must be made to retain, widen or replace any bridge within the limits of a 3-R project. Widening vs. replacement should be evaluated to determine the most cost-effective treatment. Consider AASHTO standards for bridges to remain in place and Table 4-3 whichever is less, for minimum width. Additionally, consideration should be given to the accident history and the cost of widening when determining if widening is cost effective. If the decision is made to replace an existing structure, new construction standards will apply to the bridge replacement portion of the project only, not to the roadway portion. Replacing structures does not change the remainder of a 3R Project to 4R. When a decision is made to retain a bridge, the bridge rail should be evaluated to determine if it can adequately contain and redirect vehicles without snagging, penetrating or vaulting. Consideration should be given to upgrading structurally inadequate or functionally obsolete bridge rail. Consideration should be given to design standard exceptions for railing upgrades, roadway widths, etc., when the structure is listed on or determined eligible for the National Register of Historic Places. Appropriate traffic control devices should be installed where the clear roadway width on the structure is less than the approach roadway width. TABLE 4-3 MINIMUM USEABLE BRIDGE WIDTHS Design Year Volume(ADT) Useable Bridge Width (Meters) 0 - 000 000 - 2000 2001 - 4000 OVER 4000 Width of approach lanes Width of approach lanes, plus 0.6 m Width of approach lanes, plus 1.2 m Width of approach lanes, plus 1.8 m • Pavement Design and Cross Slope Pavement design for 3-R projects requires a minimum of 8 years of service life. Appropriate leveling quantities should be included in the project to correct cross slope to 2% and correct curve superelevation to new construction standards. • Sideslopes and Clear Zone As discussed earlier, a roadside inventory shall be provided on all 3-R projects. This inventory along with the accident summary and analysis gives the designer the information necessary to make good design decisions regarding safety improvements. Evaluation and improvement considerations of r...
