UBC TECHNICAL GUIDELINES GENERAL REQUIREMENTS DIVISION …

Verification by the reviewing engineer may require frequent or continuous presence on site. Where applicable, all relevant improvement sizes, diameters, elevations, depths and material must be specified on the approved plans. The field surveyor must check them during and/or after construction. They are to be relevant to the UBC Datum and nearest official UBC monument. Rim and invert elevations ... ................
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