Common use of Retaining Walls and Miscellaneous Structures Clause in Contracts

Retaining Walls and Miscellaneous Structures. The ENGINEER will prepare plan and profile layout drawings and structural details for four (4) NB ML Mechanically Stabilized Earth (MSE) retaining wall widenings extensions in GeoPak MicroStation format. Retaining wall plan layouts, elevation, profile drawings, typical wall sections, construction detail drawings and structural general notes and specifications will be in accordance with TxDOT and Green Ribbon Aesthetic design criteria documents. Each Retaining Wall will be analyzed by the Geotechnical ENGINEER for localized “Internal and External Stability” and Global Stability for dry long-term conditions with AASHTO Factors of Safety for sliding and overturning, analyze base bearing pressure resultant bearing pressure to be within mid 1/3 base width and maximum bearing pressure design check. Geotechnical ENGINEER will evaluate global stability for walls with heights greater than 5 feet. ENGINEER will prepare a QA/QC “Retaining Wall Design Criteria and Layout Checklist”. ENGINEER will coordinate closely with Geotechnical Engineers, Surveyors and SUE to develop final retaining wall plans and grading contour plans. Retaining wall details, total quantities and estimate of probable construction cost will be provided by the ENGINEER for the 30%, 60%, 90% and 100% submittals.