Module 2: Titles, Technical Descriptions, and Record Research - Worked Examples

These examples turn title and survey records into a checked pre-field geometry while preserving traceability to the original sources.

Extracting the Parcel Record Header

A title copy lists Lot 18, Psd-00-012345, a stated area of 600 m², and a technical description tied to an identified reference point. Prepare the minimum record header for the survey file.

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Quadrant Bearing to Azimuth Conversion

Convert the record bearing S35∘20′ES35^\circ20'E to azimuth measured clockwise from north.

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Quadrant Bearing Sign Check Across All Four Quadrants

Four 10.000 m courses are recorded as N30∘EN30^\circ E, S30∘ES30^\circ E, S30∘WS30^\circ W, and N30∘WN30^\circ W. Convert each to azimuth and determine the signs and magnitudes of its coordinate increments.

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Forward Coordinate Computation

A boundary line begins at E1=1000.000E_1=1000.000 m, N1=2000.000N_1=2000.000 m and runs 40.00040.000 m at azimuth 30∘00′30^\circ00'. Compute the next corner.

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Closed Rectangle Coordinate Check

A training parcel runs 30.000 m east, 20.000 m south, 30.000 m west, and 20.000 m north from its starting point. Check coordinate closure.

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Coordinate Area of a Rectangular Parcel

Using the 30.000 m by 20.000 m rectangle, verify its area before comparing it with the stated title area.

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Linear Misclosure from Coordinate Sums

A computed closed parcel has ∑ΔN=+0.030\sum\Delta N=+0.030 m and ∑ΔE=−0.040\sum\Delta E=-0.040 m. Compute the linear misclosure.

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Diagnosing a Nonclosing Rectangle from a Short Course

Starting at E=1000.000E=1000.000 m, N=2000.000N=2000.000 m, a training description calls for 30.000 m east, 20.000 m south, 30.000 m west, then 19.800 m north. Check whether the recorded courses close.

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Suspected Transposed Distance in a Technical Description

A title copy lists one course as 24.50 m, while an approved plan copy appears to show 42.50 m. The 24.50 m value produces a large misclosure.

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Four-Course Record Reconstruction and Area Reconciliation

A training parcel begins at E0=1000.000E_0=1000.000 m, N0=2000.000N_0=2000.000 m. The source technical description lists the four courses below, while the client packet reports an area of 1,945.0001{,}945.000 m². Reconstruct the geometry, check closure and area, and decide what can be released.

CourseRecord bearingDistance
1N53∘07′48′′EN53^\circ07'48''E50.000 m
2S26∘33′54′′ES26^\circ33'54''E44.721 m
3S68∘11′55′′WS68^\circ11'55''W53.852 m
4N18∘26′06′′WN18^\circ26'06''W31.623 m

This is an idealized practice dataset with rounded bearings and distances. Treat the computed area as a diagnostic until the misclosure and source-record basis are reviewed; the example supplies no acceptance tolerance and authorizes no correction.

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Preparing a Field Search Package from Verified Records

The title, approved plan, and computed parcel now agree. Four expected corners and a reference tie have been plotted.

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