Scour Analysis Clause Samples
The Scour Analysis clause defines the requirements and procedures for assessing the potential for erosion or removal of soil around structural foundations, such as bridge piers or abutments, due to water flow. Typically, this clause outlines the methodologies to be used for analysis, the data required (such as hydrological and geotechnical information), and the standards or codes to be followed. Its core practical function is to ensure that structures are designed or evaluated with adequate consideration of scour risks, thereby preventing structural failures and ensuring long-term safety and stability.
Scour Analysis. The Engineer shall provide the following services:
1. Perform a scour analysis for each proposed bridge structure.
2. Prepare each scour analysis using a State-approved methodology listed in the Work Authorization. The Engineer shall select the methodology based 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 follow the methodology outlined in the State Geotechnical Manual. The Engineer shall coordinate with the State prior to commencing any work on any Stream Migration Study. This coordination must include consultation with the appropriate State technical expert.
3. Provide the State the potential scour depths, envelope and any recommended countermeasures including bridge design modifications and revetment.
Scour Analysis. The Engineer shall provide the following services:
Scour Analysis. The Engineer shall provide the following services:
1. Perform a scour analysis (which shall be signed and sealed) for each proposed bridge structure.
2. Prepare each scour analysis using a State-approved methodology listed in the Work Authorization. The Engineer shall select the methodology based 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 follow the methodology outlined in the State Geotechnical Manual. The Engineer shall coordinate with the State prior to commencing any work on any Stream Migration Study. This coordination must include consultation with the appropriate State technical expert.
3. Provide the State the potential scour depths, envelope and any recommended countermeasures including bridge design modifications and/or revetment.
Scour Analysis. The Consultant shall provide the following services for two bridges over Upper Buffalo Bayou and Little Prong Creek:
a. Complete a scour analysis using the HEC-RAS hydraulics model. Document the scour envelop on bridge layouts that are provided by the roadway lead and prime DEC. Determine the need for scour counter measures and provide recommendations. Document the scour findings and recommendations in a scour report. This report must be signed and sealed by a Licensed Texas PE.
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. The Engineer shall provide the following services:
6.1. Perform a scour analysis for each proposed bridge structure.
Scour Analysis. VHB will conduct a scour analysis of the NH ▇▇▇/▇▇▇▇▇▇▇▇▇ ▇▇▇▇ 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. ▇▇▇▇▇▇ and ▇▇▇▇▇▇▇ 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 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.
Scour Analysis. The Engineer shall provide the following services:
A. Perform a scour analysis for each proposed bridge structure.
B. Prepare each scour analysis using a State-approved methodology listed in the Work Authorization. The Engineer shall select the methodology based 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 follow the methodology outlined in the State Geotechnical Manual. The Engineer shall coordinate with the State prior to commencing any work on any Stream Migration Study. This coordination must include consultation with the appropriate State technical expert.
C. Provide the State the potential scour depths, envelope and any recommended countermeasures including bridge design modifications and/or revetment. DocuSign Envelope ID: D0E29F2F-2A8C-4E32-A9B8-8EFA82530B8F