Design and Construction Standards - Tualatin Valley Water District
Design and Construction Standards - Tualatin Valley Water District
Design and Construction Standards - Tualatin Valley Water District
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Section 1General Requirements1.1 Scope <strong>and</strong> Definitionsa. The <strong>Tualatin</strong> <strong>Valley</strong> <strong>Water</strong> <strong>District</strong> <strong>Water</strong> System St<strong>and</strong>ards includes provisions,technical specifications, <strong>and</strong> requirements for construction within the <strong>Tualatin</strong><strong>Valley</strong> <strong>Water</strong> <strong>District</strong>, <strong>and</strong> other entities managed by the <strong>District</strong>.b. In addition to following these St<strong>and</strong>ards, water system design <strong>and</strong> constructionshall abide by all relevant codes, ordinances, <strong>and</strong> regulations. In cases ofconflicting requirements, the more stringent st<strong>and</strong>ard shall apply.c. St<strong>and</strong>ard Details are included in these St<strong>and</strong>ards to supplement the writtenspecifications, but the written specifications shall have precedence over thest<strong>and</strong>ard details in the event of conflicts.d. The <strong>District</strong> Engineer has the authority to recommend or allow deviations fromthese St<strong>and</strong>ards in necessary circumstances, according to his or her bestjudgment.e. Public health <strong>and</strong> safety shall be adequately protected in the Project Engineer’sdesigns <strong>and</strong> at all times during construction of water system improvements.f. All construction <strong>and</strong> other water system-related work shall be performed byexperienced workers using tools in good repair to a high quality of workmanship.The <strong>Tualatin</strong> <strong>Valley</strong> <strong>Water</strong> <strong>District</strong> may revise the St<strong>and</strong>ards at any time without prior notification.Any amendment shall take effect upon the date indicated in the amendment upon posting to the<strong>District</strong>’s website.1.2 General Process for <strong>Water</strong> System Improvementsa. In general, the process for designing <strong>and</strong> installing water system improvementsshall be as follows:1. The Developer shall submit engineering plans prepared by the Project Engineer <strong>and</strong>sealed with professional engineers stamp in accordance with ORS 672, along withthe plan review fee.2. The <strong>District</strong> shall review the engineering plans. If changes <strong>and</strong> revisions arerequired, the Project Engineer shall revise <strong>and</strong> resubmit the plans.3. Following approval of plans by the <strong>District</strong>, the Developer’s Contractor shall installthe improvements in accordance with the approved plans.4. The <strong>District</strong>’s Inspector’s shall monitor <strong>and</strong> inspect the work throughoutconstruction to ensure compliance with the approved plans <strong>and</strong> <strong>District</strong> St<strong>and</strong>ards.5. Upon completion of the work, the Developer shall submit As-Built Drawingsprepared by the Project Engineer.TVWD <strong>Water</strong> System St<strong>and</strong>ards June 2012 Page 1-1
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