harvard university control points and guidelines · 2017. 4. 27. · harvard university has...

Harvard University Control Points and Guidelines Last Revised August 1, 2016, JN Questions or Comments, please contact: Planning Resources Director, HPPM

Purpose Harvard University has established monumented control points to maintain an accurate computerized base map of Harvard University and to provide monumentation to assist surveys related to Harvard Capital Projects. All monuments consist of brass disks set in concrete at various strategic locations around the University. All surveys completed at Harvard University should reference these established monuments, and therefore the Massachusetts State Plane Coordinate System, Mainland Zone, North American datum of 1983, which is used for the University’s geographic information system (GIS). By basing all University surveys on a common set of control points, the University can achieve significant benefits including:

• cost savings by establishing control points which should reduce fees charged for surveys, • consistent results across various survey companies, • the potential to share survey data and use separate surveys in conjunction with each other, • the ability to update and maintain the University's Geographical Information System with

survey information.

The following pages provide information about the monuments and describe the basic guidelines to be followed to insure compatibility with the University coordinate system. Specifications that detail the individual elements of a survey are the responsibility of the Harvard School or Department contracting for the survey.

A full report on the network of geodetic control points and the survey techniques used to document their locations is available for review. Further information on these specifications can be obtained from:

Planning Resources Director Harvard Planning and Project Management

1350 Massachusetts Avenue Holyoke Center 5th Floor Cambridge, MA 02138 Phone: (617)496-4434

e-mail:[email protected]

mailto:[email protected]


Harvard Planning & Project Management 2

Guidelines

Reference Points

At least two Harvard University Monumented Control Points are to be incorporated into each survey and shown and dimensioned on the map. Other landmarks and/or property stakes may also be used in combination with the Harvard University Monumented Control Points. Please refer to the recovery notes for locations of monuments. A description of said landmarks or property stakes, and recovery notes is to accompany each survey map. The Surveyor should notify HPPM if it appears to be beneficial and cost effective to set up extra monumentation to densify and tighten the control network for a specific survey area.

Accuracy

A relative horizontal accuracy of Federal Geodetic Control Committee (FGCC) Second Order Class II (30mm + 50ppm or 1:20,000) or better is required. Elevations should be converted to respective municipal base, Cambridge City Base or Boston City Base or other datum at the discretion of the contracting School or Department. The Surveyor's report should match Massachusetts Land Court standards. The Surveyor will certify the accuracy of the survey. The Surveyor will also provide in the report the results and date of the last calibration of the equipment to be used in the survey.

Drafting

All survey maps and drawings are to be in digital format. The drawings are to be in AutoCAD format at real scale. DWG files are preferred, but DXF files will be accepted. All measurement and dimensions on the drawings should be in feet and decimals. The drawings should also indicate a North arrow, state plane grid ticks, a legend of symbols and abbreviations, a scale, a drawing title, date and the name of the surveyor. Paper copies of all surveys are to accompany the digital files. These copies will be the record drawings. The surveyor's stamp, signature and certification of the accuracy must be present on the copies.

Deliverables

Digital data, paper print, and associated survey reports of any survey conducted on behalf of the University must fulfill all contractual agreements and Harvard University Survey Guidelines contained herein. At minimum a set of all materials identified as deliverables must be submitted to the Property Information Resource Center (PIRC), HPPM (contact information below) and to the party contracting for the service.

General

The Surveyor will be responsible for arranging rights of entry to all lands on which work will be required. As needed, obtaining record documents and title information are the responsibility of the Surveyor; however, some of these materials may be available from the Property Information Resource Center, HPPM. The final survey must bear the stamp of a Land Surveyor registered in the Commonwealth of Massachusetts. When required by the type of survey, the Surveyor shall, in so far as possible, acquire data including, but not limited to deeds, maps, certificates, or abstracts of title, section


line and other data including, but not limited to, deeds, maps, certificates, or abstracts of title, section line and other boundary line locations in the vicinity. The Surveyor shall be responsible for the accuracy and completeness of title matters relating to the survey. If specified, the survey must be suitable for filing with the Registry of Deeds. Access to deeds held by Harvard University will be made available to the Surveyor as far as possible. Harvard Planning and Project Management will make survey information, contained in its files, available to both University personnel conducting University survey activity and those contracted to perform such activities. Please contact:

Property Information Resource Center (PIRC) Richard A. and Susan F. Smith Campus Center

1350 Massachusetts Ave, Rm 547 Cambridge, MA 02138 Phone: 617-496-1862 Fax: 617-495-0559

E-mail: [email protected]

GPS/Geodetic Reference Control Network

Executive Summary

Harvard University GIS/Base Mapping Project (1992, 1998 & 2000 ) Prepared by BSC Group 425 Summer Street Boston, MA 02210

This report describes the network of geodetic control stations established by The BSC Group, Inc. for Harvard Planning and Real Estate between April and June, 1992. The project was spread over a 60 square mile area of Eastern Massachusetts in and around the Cambridge and Boston Campuses of Harvard University, and includes a total of 37 new survey control stations. A second set of four geodetic control stations (700 - 703) in Allston were established during March of 1998. A third set of six stations (704 - 709) were established in December 2000.

Satellite-based Global Positioning System (GPS) techniques were used to provide a precise horizontal control framework with a relative horizontal accuracy of Federal Geodetic Control Committee (FGCC) Second Order Class II (30mm + 50ppm or 1:20,000) or better. The final control system is comprised of 37 new points and 4 National Geodetic Reference System (NGRS) points computed in the Massachusetts State Plan Coordinate System, Mainland Zone reference to the North American Datum of 1983. the final least squares adjustment of the network include 72 quasi-independent GOS baselines ranging from .03 km (0.2 mi) to 5.4 km (3.3 mi) in length, and exhibited a redundancy of 103 degrees of freedom. The computed aposteriori variance factor passed the Chi-square test at the 95% level of confidence, resulting in relative confidence regions ranging from 8 to 20 mm (0.026 to 0.066 ft) horizontally and 13 to 56mm (0.043 to 0.18 ft) vertically at the same level. A regression analysis of these ellipses suggest an internal network accuracy of 5 mm + 3ppm horizontally (1:177323) and 11 mm + 6ppm vertically (1:86550), which implies an average error of 9 mm (0.03 ft) horizontally and 19mm (0.06 feet) vertically for an average baseline length of 1.2 km (0.74 mi).

Orthometric heights were established for all stations utilizing a combinations of measured GPS ellipsoidal height differences, conventional spirit leveling, and geoidal modeling. Heights are


http://www.ngs.noaa.gov/FGCS/instruments/charter.htm

http://www.ngs.noaa.gov/


referenced to the National Geodetic Vertical Datum of 1929. Checks with existing vertical control and experience on similar project in this area suggest an accuracy on the order of 3 cm (0.1ft) +/- for the derived orthometric heights.

The results suggest that the overall accuracy of the network well exceeds that which was required by two full classes of FGCC accuracy. The excellent geometric distribution of the stations, together with the permanent monumentation of a subset on client-owned property offers an ideal basis for the growth of a highly accurate and comprehensive Geographic Information System (GIS) throughout the University. The strategic selection of the monumented control points also offers an excellent basis for the incorporation of future surveys for the University, in a way which will contribute to the timeliness and maintenance of the GIS in a seamless way.

Revalidation of Survey Monuments, Chas. H. Sells, Inc., 2006

This report contains an outline of the surveying services conducted relative to the Phase I Aerial Mapping vertical datum. This report depicts the results of the static GPS survey mission and conventional differential leveling in Cambridge and Boston, Massachusetts. This survey was completed as part of a general services contract between The President and Fellows of Harvard College, Acting By and Through The Allston Development Group (now part of Harvard Capital Planning and Project Services) and Chas. H. Sells, Inc. for Survey and GIP Services.

The survey was conducted by Sells was to confirm that the photogrammetric ground control positions required for aerial mapping of Phase I are relative to the previously established National Geodetic Vertical Datum of 1929 (NGVD29). This report states the elevations surveyed by Sells in relationship to NGVD 1929, the elevations reported in the Harvard published reports and the differences between the two. The survey involved the recovery of control positions established by The BSC Group, Inc. for Harvard Planning and Real Estate. The BSC project was spread over a 60 square mile area of Eastern Massachusetts in and around the Cambridge and Boston Campuses of Harvard University, and included a total of 37 survey control stations. The first BSC survey was conducted 1992. A second set of four geodetic control stations (700 - 703) in Allston were established during March of 1998. A third set of six stations (704 - 709) were established in December 2000. The Harvard Control Monuments that were not recovered or found to have been moved /disturbed are shown in item 4. Elevations reported herein are in relationship to the NGVD 1929 datum in feet.

OHOB15 Reported as moved from original position, 2007

Replacement of HYSC09 with CAMB01, 2013

Placement of CAMB01 through COMB06 and measurement of OHOB15, 2016


Harvard University Monumented Control Points


CONTROL STATION DATA - 703 STATION: 703 LATITUDE: 42 21 34.94766 N LONGITUDE: 71 07 24.93560 W

Horizontal Datum is North American Datum 1983 Vertical Datum is North American Datum 1929 Massachusetts State Plane Coordinates, Mainland Zone NORTHING: 2956331.107 FEET EASTING: 757899.594 FEET ELEVATION: 11.71 FEET NORTHING: 901091.524 METERS EASTING: 231008.258 METERS ELEVATION: 3.264 METERS

NOTE: Elevation corrected per Chas. H. Sells survey, 2007 Description: In Allston, a standard brass Harvard University Survey disc stamped "703" set in a curb at the easterly side of Windom Street, northwesterly of the intersection of Dedham Parish Road. 51' southeasterly of the center of a manhole and 23' northwesterly of a sign post.

GENERAL LOCATION (N.T.S.) DETAIL (N.T.S.)




NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: In Allston, a standard brass Harvard University Survey disc stamped "708" set in a granite curb at the southerly side of a private drive for the parking lot of #500 Soldiers Field Road, 42.6' westerly from the center of a light pole, 9.5' northeasterly of the northeasterly corner of an electric hand hole and 11.0' southeasterly from the center of a drain manhole.





NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: In Allston, a standard brass Harvard University Survey disc stamped "709" set in a concrete island at the northerly side of Cambridge Street, at the easterly side of the Mass Pike exit and at the westerly side of the Mass Pike entrance. 48.7' northwesterly from the northeasterly corner of a gaurdrail post, 38.0' northeasterly from the northwesterly corner of a guardrail post and 14.5' southesterly from the southeasterly corner of a concrete light pole base.



CONTROL STATION DATA – ALBH02 STATION: ALBH02 LATITUDE: 42 22 06.09687 N LONGITUDE: 71 07 35.56981 W


NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: At the Allston District of Boston, at the Northeaterly end of the Bright Hockey Center situated in the Soldiers Field Athletic Area. The area may be accessed from North Harvard Street approximately 300 feet Southwest of the intersection with Soldiers Field Road, at the rear of the parking lot in front of the Dillon Field House. Station is set in a concrete planter structure atop a rise leading to the Northeast corner of the Hockey Center, approximately 52 feet Northeast of the northeast entrance. A standard 2" brass tablet set in the Eastern end of the planter wall inscribed "Harvard University Geodetic Monument GPS 1992" and stamped ALBH02.



CONTROL STATION DATA – ALBL03 STATION: ALBL03 LATITUDE: 42 22 04.02112 N LONGITUDE: 71 07 20.44078 W


NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: At the Allston District of Boston, along the Southerly curb line of Storrow Drive Eastbound approximately 500 feet East of the Anderson Bridge, and directly in front of the field leading to the Baker Library of Harvard University. Station is set in the granite curbstone approximately 4 feet West of a light pole, just beyond the ramp leading from North Harvard Street and the Anderson Bridge to Storrow Drive. A standard 2" brass tablet inscribed "Harvard University Geodetic Monument GPS 1992" and stamped ALBL03.



CONTROL STATION DATA – CAMB01 STATION: CAMB01 LATITUDE: 42 22 32.89565 N LONGITUDE: 71 06 58.15103 W


NOTE: Monument Placed July 16, 2013 by WSP Sells DESCRIPTION: Brass Disc in Granite Curb



CONTROL STATION DATA – CAMB02 STATION: CAMB 02 LATITUDE: 42 22 45.140623 N LONGITUDE: 71 6 56.499668 W

Horizontal Datum is North American Datum 1983 (NAD 83) Vertical Datum is National Geodetic Vertical Datum 1929 (NGVD 29) Massachusetts State Plane Coordinate System, Mainland Zone NORTHING: 2963446.136 FEET EASTING: 760002.427 FEET ELEVATION: 19.95 FEET NORTHING: 903260.189 METERS EASTING: 231649.203 METERS ELEVATION: 6.081 METERS

DESCRIPTION: In Cambridge, a standard brass Harvard University Survey disk stamped “CAMB 02” set in a granite stone within the courtyard seating area northwest of the Museum of Comparative Zoology Lab building near Oxford Street. The disk is located 33.8’ east from a 5” diameter tree, 46.1’ northeast from a 6” diameter tree, and 33.3’ north from a 5” diameter tree, inscribed "Harvard University Geodetic Monument 2016" stamped CAMB02.





DESCRIPTION: In Cambridge, a standard brass Harvard University Survey disk stamped “CAMB 03” set in a granite curb in the southerly corner of Radcliffe Yard. The disk is located 36.2’ southeast of a light pole, 62.0’ north of the southwest corner of Longfellow Hall, and 41.2’ northwest of the southwesterly corner of granite steps leading into Longfellow Hall, inscribed "Harvard University Geodetic Monument 2016" stamped CAMB03.





DESCRIPTION: In Cambridge, a standard brass Harvard University Survey disk stamped “CAMB 04” set in a granite curb in the southerly side of the Malkin Athletic Center parking lot. The disk is located 9.8’ southeasterly of the southeasterly side of a granite island, inscribed "Harvard University Geodetic Monument 2016" stamped CAMB04.





DESCRIPTION: In Cambridge, a standard brass Harvard University Survey disk stamped “CAMB 05” set in a granite curb on the northerly side of Cowperthwaite Street approximately 172’ from the intersection of DeWolf Street. The disk is located 107.5’ southeast of a hydrant, 85.4’ northwest of a hydrant, and 36.8’ north of a Dunster House building corner, inscribed "Harvard University Geodetic Monument 2016" stamped CAMB05.





DESCRIPTION: In Cambridge, a standard brass Harvard University Survey disk stamped “CAMB 06” set in a granite curb on the southerly side of the Peabody Terrace Court Yard. The disk is located 13.5’ southeast from the southeasterly corner of a concrete planter, 25.3’ west of the westerly side of a sidewalk, and 27.9’ northeasterly of a light pole, inscribed "Harvard University Geodetic Monument 2016" stamped CAMB06.



CONTROL STATION DATA – HOTS07 STATION: HOTS07 LATITUDE: 42 22 23.99576 N LONGITUDE: 71 07 07.40743 W


NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: At Cambridge, at the Southeast corner of Harvard Square and the intersection of Massachusetts Avenue and Dunster Streets. Station is set in the granite curbing forming the subway island for Harvard Station in the middle of the Square, approximately 45 feet North of the Northeast corner of the Cambridge Savings Bank building, and 91 feet Southeast of the Southeast corner of the Harvard Square Newsstand. A standard 2" brass tablet inscribed "Harvard University Geodetic Monument GPS 1992" and stamped HOTS07.



CONTROL STATION DATA – MCHI08 STATION: MCHI08 LATITUDE: 42 22 19.95421 N LONGITUDE: 71 06 54.30318 W


NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: At Cambridge, in the Southeast quadrant of the intersection of Harvard and Quincy Streets. Station is located opposite the Northwest corner of the "Inn at Harvard" building, at the extreme northwest corner of the wrought iron fence surrounding the building. A standard 2" brass tablet set in the granite curbing at the back of the sidewalk which supports the fence inscribed "Harvard University Geodetic Monument GPS 1992" and stamped MCHI08.

GENERAL LOCATION (N.T.S.)


CONTROL STATION DATA – NYWJ10 STATION: NYWJ10 LATITUDE: 42 22 37.18245 N LONGITUDE: 71 06 47.18698 W


NOTE: Elevation corrected per Chas. H. Sells survey, 2007 DESCRIPTION: At Cambridge, in front of the Southeast corner of the William James Hall between the intersection of Divinity Avenue and Kirkland Place with Kirkland Street, oppposite the Church of New Jerusalem. Station is located at the East end of the concrete apron in front of the building, approximately 23 feet from the back of the sidewalk and 12 feet from an iron fence on the east edge of the property. A standard 2" brass tablet set in an apron inscribed "Harvard University Geodetic Monument GPS 1992" and stamped NYWJ10.



CONTROL STATION DATA – OHOB15 STATION: OHOB15 LATITUDE: 42 22 54.192270 N LONGITUDE: 71 7 43.683018 W


DESCRIPTION: In Cambridge, in the granite steps leading to the original Observatory located behind Phillips Auditorium. The Observatory complex is bounded by Concord, Madison, Garden, and Bond Streets on the West, North, East, and South, respectively, and may be reached from the driveway opposite the intersection of Madison Street and Concord Avenue. The station is a standard 2" brass disk set near the center of the lowest of three granite steps leading from the driveway to the old Observatory. The disk is located 51.2’ south of the northerly corner of a 1 story wood building, 30.9’ west of a 1 story wood building, and 16.6’ east of the northerly corner of the old observatory building, inscribed "Harvard University Geodetic Monument GPS 1992" an stamped OHOB15.



CONTROL STATION DATA – OHRQ14 STATION: OHRQ14 LATITUDE: 42 22 53.93414 N LONGITUDE: 71 07 29.03693 W


NOTE: Elevation corrected per survey, 2/2007 DESCRIPTION: At Cambridge, in front of Moors Hall at the Northwest corner of Radcliffe Quadrangle. This area may be reached by accessing the alley which is the first right off Linnaean Street from its intersection with Garden Street. Station is set in the concrete cap of a 1' high brick wall at the Southeast corner of Moors Hall, approximately 64 feet Northeast of the Northeast corner of Briggs Hall. A standard 2" brass tablet inscribed "Harvard University Geodetic Monument GPS 1992" and stamped OHRQ14.


harvard university control points and guidelines · 2017. 4. 27. · harvard university has...

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