Stakeout

Here is the menu of types of stakeout:

Stakeout types

Radial Stakeout
Radial stakeout
Set up on a point, backsight a point and radially stakeout points.

First you enter your instrument setup information.  Then after you enter a To: point, FieldWorks will display information about the location of the point to be staked: the Horizontal Angle, Vertical Distance, and Horizontal Distance. Then once you take a measurement using Measure or Track, the display shows the HA, ZA, and SD, and computes and displays the towards/away (come/go) distance, the left/right distance, and the cut/fill distances. With a GPS, the distances are displayed as N or S to move, E or W to move, and cut/fill.

Stakeout screen

To try again, move the rod and press Measure again. When you are satisfied with the location of the stake point, if you want to store as-staked Coordinates and Field data, press the Sideshot button. Then press Next Pt to display the stakeout data for the next point.

Point on line stakeout
Point on line stakeout
Given 2 points to establish a reference line, this function lets you stake points on that line. You do not have to be setup on the line, and you do not even need a line of sight to the First or Second point. See also the Stakeout-Inverse function for a more powerful version of this function, if you are using a GPS, it automatically takes you to that function.

After entering the instrument From: point and the backsight Ref. point, this prompt appears:

First pt, Second Pt:

Enter the first and second known point number on the line.

Next enter the Height of Instrument and Height of Target.

Then once you take a measurement using Measure or Track, the display shows the HA, ZA, and SD, and computes and displays the towards/away (come/go) distance, and the left/right distance to the point on the line nearest the rod. To try again, move the rod and press Measure again.

When you are satisfied with the location of the stake point, if you want to store as-staked Coordinates and Field data, press the Sideshot button. When finished staking a point, move the rod farther up the line and press Measure again to repeat the process.

When finished staking points along that line, go back to the From: point field to start the process again.

Offsets
Offsets stakeout
Given a setup point and two points defining a reference line, stake a series of points along or offset to either side by a specified distance. You do not have to be setup on the line, and you do not even need a line of sight to the First or Second point.

After entering the instrument From: point and the backsight Ref. point, these prompts appear:

First pt, Second Pt:

Enter the first and second known point number on the line.

Offset from line:

Enter the offset from the reference line defined by the First and Second points. Enter 0 to set points on the line.

Distance along:

Enter the horizontal distance increment along the ref. line from the First point. Any number of equally spaced points may be set along the line, such as every 50’.

Next enter the Height of Instrument and Height of Target, then press the Next Pt button and FieldWorks will compute the point and display information about the location of the point to be staked: the Horizontal Angle, Vertical Distance, and Horizontal Distance.

Then once you take a measurement using Measure or Track, the display shows the HA, ZA, and SD, and computes and displays the towards/away (come/go) distance, the left/right distance, and the cut/fill distances. To try again, move the rod and press Measure again.

When you are satisfied with the location of the stake point, if you want to store as-staked Coordinates and Field data, press the Sideshot button. When finished staking a point, press Next Pt to automatically compute and stake the next point along the same line at the same distance increment and offset.

When finished staking points along that line, go back to the From: point field to start the process again.

Elevation stake

Given a setup with a known elevation, shoot the target and calculate the elevation and cut and fill. This is useful to compute and stake cut or fill for a series of points at a given elevation (such as a ditch, contour line, or building pad.)

Elevation to stake:

Enter the elevation to stake.

This is the only input needed. After each shot using Measure or Track, the display updates the displayed cut/fill.

Sets

Sets stakeout lets you radially stake any sets of points in any order defined by a point list stored in a file, same as used in the plot function and the road staking function. If you are simply staking consecutive points, you do not need this function, use Radial Stakeout. The Point list editing screen appears:

File-Open

Allows you to select a different existing plot file.

File-New

To create a new plot file in addition to the default plot file, to store several different views of the same job.

File name:

The entry of a period and a File extension (part after the period) is not needed, the required extension of .PLT will automatically be attached to the file name.

Plot

Plots the currently displayed plot file. After the plot is displayed, this button changes to Edit, which will return you to the screen allowing you to edit the file.

Stake

Saves the plot file, and proceeds to stake the points, same as a Radial Stakeout but the points do not need to be in consecutive order.

Inverse

Used to display the station and offset of points, and optionally stake the points. This can be used to perform what some call Offsets from a line or a Perpendicular intersection since it gives you the perpendicular offset from the line or curve. Similar to Road stakeout, but has a simpler screen.

Stakeout entry fields

From:

Enter the instrument point # (also called the occupied point.) This field only needs to be entered when you first set-up or when you want to move to a new instrument setup. The program displays the coordinates of the instrument point at the bottom of the screen. After hitting Tab or on any other field, the program will ask for the Ref. Point #.

Ref. Point#

Enter the desired reference point # (also called backsight point) and tap OK. Set the instrument Horizontal circle to zero on the Ref. Point.

-or- If there is no reference point stored, enter the bearing to the reference, and hit the Brg/Az button, and the program will create a ref. point for you at 100′ along the entered bearing or azimuth.

HI:

Enter the Height of Instrument. This normally only needs to be entered after a new instrument setup. If “no elevations” was selected in the Options Function, the HI and HT fields are ignored. With GPS this is the height of the antenna on the receiver and then a Localization dialog appears (see using with GPS.)

HT:

Enter the Height of Target. The value for the previous record will be displayed. This only needs to be re-entered if the height of target has changed since the last shot.

-or- To Shoot a Benchmark to establish a better instrument point elevation, press the Shoot BM button, described
below.

To:

The next consecutive point number will be displayed and may be edited. This is the number of a pre-computed point to be staked. After entering this number and pressing Tab, the stakeout data (HA, HD, VD) will be displayed for the point. You do not need to enter a point number if you use the Next Pt button to display the next consecutive point. If you have a Servo instrument selected, you can press the Turn button to turn the instrument to the point. To check your backsight, enter the Ref. point# and hit Tab then Measure, and the program displays the difference between the stored point and the shot.

De:

Enter up to 20 alphanumeric characters to be used as a description for the point (optional).

-or-Tap within the edit box to modify the previous description.

-or-Use the up or down scroll arrows on the edit box, or the wheel on the side of the palm-size PC to scroll up or down the list of stored descriptions. See page 39 for information on customizing the list of stored descriptions.

HA:

Enter the horizontal circle reading for the point.

– or-press Measure to download the data from the instrument.

ZA:

Enter the zenith angle to the point. If no entry or an entry of 0 is made, the S.Distance entry will be assumed horizontal. Any angle less than 45 degrees is processed as a vertical angle. Zenith angles are corrected for curvature and refraction when computing coordinates.

SD: Enter the slope distance.

Rec:

Displays the current record number for field data storage. To recall and display the data for any previous field data record, enter the record number, and the program switches to Review mode, see the description below. Another way to review just the previous record is to press the Review button.

Function buttons in Stakeout

Measure

Downloads HA, ZA, and SD from the total station. See instruments for operation instructions of specific instruments. Finishes taking shots if in Track mode. With PocketPC’s, the left function button also is a Measure button to give you a tactile snap when you hit it (or hit Enter on units without function buttons.) With GPS, this downloads and displays coordinates, and displays the Horizontal and Vertical quality (HQ/VQ) and the # of satellites. If you are using a Robotic instrument, this button is replaced with a Track Button, and a Status button that goes to a special robotic screen, see instruments.

Track

Downloads HA, ZA, and SD from the instrument and takes a new shot about once every 2 seconds depending on the speed of the instrument. This is useful when moving the rod to zero in on a desired point. If you have the StakeSounds Option turned on, the program will make an audible sound to indicate how close you are to the desired position. The sound gets higher in pitch as you get closer to the position, then stops when you are very close, then gets lower in pitch as you move past the position. When the rod is close enough, press anywhere on the screen to exit from Track mode.

Review

Recall and display the field data for the previous sideshot record, and switch to Review mode, see the description below. Another way to switch to Review mode (for other records than the previous one) is to tap on the Rec: field and enter a record # to go to. In Review mode, the HA, ZA, SD data may not be changed, only the To Point#, Description, HI, or HT. Remember if you change a HI or HT to hit Next Rec to change and re-calc other points that might be affected.

Next Pt

Displays the data for the next consecutive point to be staked. Finishes taking shots if in Track mode.. If you are staking Sets, the next point is defined by the point list. If you are road staking, the next point will be computed automatically by adding the interval to the previous station, and the station and offset are displayed in the De: field.

NewSetup

Go back to the From (Occupied) Point# prompt to enter a new instrument setup.

Sideshot

Computes and stores a coordinate point with the currently displayed data. Useful if you come upon a point besides the points you are staking that you want to record, or to save the as-staked point. You must first take a shot with Measure. Also stores the field data for the shot if the Save field data option is on. If the As-built printout option is on, the data for this point is added to the printout file. With PocketPC’s, the third function button also is a Sideshot button to give you that tactile snap when you hit it (or hit Esc on units without function buttons.)

Note

Enter a 20 character note for the previous shot. (in addition to the description.) This is used as an attribute in SDR format files or for special functions in TDS format files. Warning: if you use Notes the field data file is not backwards compatible to revisions before 2.17. You must put the keyboard down to see this button in Stakeout.

Menu

Go back to the Main Menu.

Chg.elev

Useful if you must change the design elevation for any reason. Prompts for a New elevation for the stakeout point, stores it with the point and computes and displays a new Cut/Fill based on that elevation. . You must put the keyboard down to see this button.

Function buttons in REVIEW MODE

Done

Changes back to normal stakeout mode when finished reviewing the data.

Delete

Deletes the currently displayed field data record. This function actually ‘zeroes’ the field data, retaining the record number, and asks if you want to delete the coordinate point.

Next Rec, Prev

Displays the next or previous record of field data. If you change any of the field data, you must press one of these to store the data. When you get to the end of the field data, it stops and makes a sound.

SHOOT A BENCHMARK

This button is used at the Height of Target question to shoot to a benchmark or other point with a known elevation to bring a better elevation back to the instrument. Before hitting this button, enter the HT. One advantage of this function is that errors in measuring the HI or HT will not affect the points shot, and the HI and HT can even be entered as zero because of this (as long as you don’t change the rod height after shooting the benchmark.) The program will prompt for:

BM point# for Elev:

Enter the point number of the Benchmark or other point which has a good elevation. If the point does not exist in the coordinate file, the program will prompt for the coordinates. (and the elevation is the only part used, the Northing and Easting do not matter.)

Ready for shot to known elevation?

Press Yes when ready to shoot to the Benchmark and the program will download a measurement.

Computed elev:

The program displays the new computed instrument point elevation, and the difference between the computed and the original instrument point elevation. (note that these will not be actual figures if you put in an HI or HT of zero.)

Store this elev?

Press Yes to use the computed elevation for the instrument point. This elevation will replace the original setup point elevation in the coordinate file.

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