Agenda - Planning Commission - 04/03/1990

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Case #4 ESTABLISHMENT OF PERMANENT BENCH MARKS IN THE CITY OF RAMSEY By: Mark S. Banwart, Community Development Director and Peter Raatikka, City Engineer Background: Since August 1, 1989, the Ramsey Planning and Zoning Commission has been reviewing establishment of information required on Certificates of Survey. A Certificate of Survey is required by Minnesota State Building Code as a prerequisite to issuance of a building permit. On January 21, 1986, the City of Ramsey received bench marks and high water elevations for the City of Ramsey as authorized at the November 12, 1985 City Council meeting. One hundred twenty-six additional bench marks were located and/or installed within the rural area of the City. On March 6, 1990, the Ramsey Planning and Zoning Commission recommended that City Council authorize the City Engineer to proceed to establishment of permanent bench marks in the City of Ramsey in order that surveyors will have reliable bench marks from which to work. Observations: In accordance with the Surveys Manual (5-293.885 ESTABLISHMENT - BENCH MARKS) Permanent bench marks shall be established as near as practicable to the Right of Way lines, at locations where they will not be disturbed by the proposed construction, where they can easily be found, and where they will be convenient for future use. Special efforts should be made to locate permanent bench marks near important road intersections. B. Permanent bench marks shall be established as follows, in order of desirability: 1) Disk cemented into a drilled hole in bed rock. 2) Disk cemented into a drilled hole in a concrete of stone building foundation, with the permission of the owner. 3) A suitable mark on a building foundation, or an easily identifiable point thereon, if the foundation is such that it would be damaged by the placing of a disk. 4) Disk cemented into a drilled hole in a concrete or stone abutment of a highway bridge (or railroad bridge with the permission of the railroad). (Note: On highway bridges, the disk shall be set on the east comer of a south abutment or on the south corner of a west abutment.) (Note: On new concrete abutments, the Contractor shall set the disk at the location directed by the Project Engineer, whose responsibility it shall be to have the disk ready for installation at the Contractor's convenience.) 5) Disk on a reinforced concrete monument extending below extreme frost line including reference post with B.M. sign, placed adjacent to monument (See Standard Plates No. 9300 A and No. 9301 A). 6) Capped pipe set in concrete extending below extreme frost line.