Scour Analysis. The Engineer shall provide the following services:
Scour Analysis. The Consultant shall provide the following services for two bridges over Upper Buffalo Bayou and Little Prong Creek:
Scour Analysis. ▪ Conduct a scour analysis at the crossing following the guidelines as outlined in HEC-18, Evaluating Scour at Bridges (Fifth Edition) to support the design of bridge foundations and necessary scour countermeasures. ▪ Evaluate long-term degradation potential based on field evaluation and any other historical information on the channel in the vicinity of the existing bridge. ▪ Calculate total scour at the bridge as appropriate. ▪ Coordinate with the structural and geotechnical engineers on the design of the bridge foundations and scour countermeasures.
Scour Analysis. VHB will conduct a scour analysis of the NH 000/Xxxxxxxxx Xxxx vehicle bridge and the downstream pedestrian footbridge following the Federal Highway Administration (FHWA) Hydraulic Engineering Center Circular HEC‐18 methodology to evaluate potential impacts to the bridge following removal of the dam. This analysis will use the hydraulic modeling results developed in Task 5.2.
Scour Analysis. The Engineer shall select the methodology depending on the site conditions such as the presence of cohesive or cohesionless soil, rock or depth of rock, proposed foundation type, and existing site performance. The Engineer shall use HEC- 18 for sites with cohesionless soils unless otherwise approved by the State. The TxDOT Geotechnical Manual shall also be used for guidance. WAs Used DocuSign Envelope ID: 56C9F445-711D-4155-8CAC-4A873A2298E4
Scour Analysis. The Engineer shall provide the following services if required or if directed by the State:
Scour Analysis. Xxxxxx and Xxxxxxx will perform geomorphic assessment, including assessment of local geology provided by Consultants, and scour analysis at the project site(s). The obtained from the analysis will be used as the design criteria for toe and/or rock wall footing for instance. The minimum design criteria for foundations shall be base (1 00-year) flood. Construction scour and Wall scour at the fooling long-term degradation will be evaluated per the criteria’ described in Highway Administration manuals. migration. can be identified and slope protection measures will be recommended necessary in the final, if the analysis indicates serious potential channel migration and erosion problems in conflict with the DSR. FROM E T C . 9 2 5 8 3 3 9 5 5 9 1999 12-07 P . Debris and trees slopes are a major factor within the tributaries and have caused severe erosion and or bank failure elsewhere in the County. will assess the proposed design and assume that the project repair will not increase the upstream flooding flooding).
Scour Analysis. The Consultant shall provide the following services: Perform a scour analysis for two proposed pedestrian bridge structures. Update the effective hydraulic model to reflect Atlas 14 rainfall and new updated geometry to reflectthe proposed conditions. Provide City the potential scour depths, envelope and recommended countermeasures includingbridge design modifications and/or revetment
Scour Analysis. The Engineer shall prepare scour analysis for bridge crossings using methodology approved by the State. The Engineer shall select the methodology depending on the site conditions such as the presence of cohesive or cohesionless soil, rock or depth of rock, proposed foundation type, and existing site performance. The Engineer shall use HEC-18 for all sites unless otherwise approved by the State.
