Face Dipstick 2277 Operator's Manual

Road profiler with data collection program 6.7x and 6.1x

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

Dipstick

2277 Road Profiler

Operator's Manual

with



RoadFace

Data Collection Program 6.7x

And RoadFace 6.1x

April 2017

Face Construction Technologies

427 West 35th Street

Norfolk, Virginia 23508

(757) 624-2121

1-800-FNUMBER

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Summary of Contents for Face Dipstick 2277

Page 1   Dipstick 2277 Road Profiler Operator's Manual with  RoadFace Data Collection Program 6.7x And RoadFace 6.1x April 2017 Face Construction Technologies 427 West 35th Street Norfolk, Virginia 23508 (757) 624-2121 1-800-FNUMBER...
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Page 3 ® OVERVIEW OF THE DIPSTICK 2277 Operation   The Dipstick 2277 is the latest in the 2200 series of Dipsticks . It has all the benefits of the earlier 2000, 2200 and 2272, plus some important new features.  ...
Page 4: How To Use This Manual
HOW TO USE THIS MANUAL ® This manual shows you how to collect data with the Dipstick 2277, as well as how to process and report the data. It will show you how to manipulate the data on either the 2277 Windows ®...
Page 5: Table Of Contents
TABLE OF CONTENTS ® OVERVIEW OF THE DIPSTICK 2277 ..... . . i HOW TO USE THIS MANUAL ......ii THE DS2277 KIT PARTS LIST .
Page 6 DIPSTICK 2277 PARTS LIST It’s important that you learn to identify each part of the DS2277 Kit. Please inspect each part carefully. If any parts are missing or appear damaged, call The Face Companies at 1-800-FNUMBER or (757-624-2121) immediately. ®...
Page 7: Parts List
® DIPSTICK 2277 PARTS LIST  The Dipstick 2277 Case Behind the Top Foam Lid...
Page 8: The 2277 Tablet Computer
Here’s what you need to know right now: When you turn off the computer, press and hold the On/Off button until you see this icon. This is very important. Remember this and do this. Stylus Face Co. SD Card RFDC startup Icon (on side) Touch Screen Power...
Page 9 The most important thing to remember is to press and hold the On/Off button until you see this icon. Any time you remove and replace the Face Company SD card, be sure to put the card in as shown in the photos below, with the face of the SD card towards the ground.
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Page 11 ASSEMBLING THE DIPSTICK 2277 BEFORE YOU START:  Ensure that the Face Company’s Data Collection program SD card is in the slot on ® the right side of the 2277 computer. Be sure the Dipstick and the 2277 Tablet are both fully charged.
Page 12 ASSEMBLY HAPTER ASSEMBLE THE HANDLE, THE 2277 TABLET COMPUTER, AND CLAMP  The handle section with the black ball is the top section. The other section is the lower section or Battery Handle. It contains a set of rechargeable batteries to provide power for the 2277 Tablet computer.
Page 13 ASSEMBLY HAPTER VERIFY THAT THE 2277 TABLET IS CONNECTED TO THE SERIAL CABLE The serial cable underneath the handle mount needs to be connected to the left side of the Tablet. You can leave it connected, even when it is in the case. CONNECT THE POWER CABLE TO THE TABLET Connect the clear power cord from the lower handle section to the side of the Handle Mount and connect the black power cord from underneath the Handle Mount to the right...
Page 14 You may start the program by double-tapping the "My Device" icon, then double-tapping the "NandFlash" Folder, then double-tapping the "RFDC2277" folder, then Doubletapping the RFCollect.exe icon. At this point, the Dipstick 2277 is assembled and ready. Zeroing and elementary data collection are covered in the next two chapters.
Page 15 CHAPTER 2 - ZEROING ® ZEROING THE DIPSTICK WHAT IS ZEROING? ® Zeroing is the process that insures that a Dipstick reads accurately by making it read the same when it is turned “end-for-end.” It is similar to the zeroing process done with precision “bubble”...
Page 16 CHAPTER 2 - ZEROING A “Moon Foot” ® Place the Dipstick Moon Feet Tangent to the Two Lines as shown below. ZEROING USING THE 2277 COMPUTER Turn On the 2277 Tablet Computer and start the RFDC program. Tap the ® "Collect"...
Page 17 CHAPTER 2 - ZEROING You may check the Zero if you like: ® Set the Dipstick on two fixed points and note the L.C.D. readings. (You may use the ® two lines you already have drawn.) Then pick up the Dipstick and reverse it end for end, taking care to place the feet down on the exact same spots where they were before.
Page 18 CHAPTER 2 - ZEROING Important: ® You should understand that the "Zeroing" process does not result in the Dipstick showing "0.000" or "Zero" as a reading. The Dipstick will always show the difference in elevation between the two feet, no matter where they are placed on the floor.
Page 19: Quick Start
Turn on the 2277 Tablet and start the RFCOLLECT program. There are three methods to start the program: Please be sure that the Face Company's SD Card is in the slot on the right side of the computer before you start.
Page 20 HAPTER UICK TART WITHIN THE MENUS: Using the stylus, just tap the menu item you want to use, then tap a command on the drop-down menu, just as if you were using a mouse on a desktop PC. If you fail to fill out some required information, the window will not close until you enter the required information.
Page 21: Data Collection Bias
HAPTER UICK TART Battery is fully charged, it should show about 13.5 volts. As the Tablet uses up the power available in its’ internal computer battery, the Tablet will “Top itself off” from the Handle Battery. This means that the Handle Battery will get drained first. So long as the power in the Handle is over 8-9 volts, the Handle Battery will supply power to the Tablet.
Page 22 HAPTER UICK TART START A NEW RUN To begin data collection, tap COLLECT/NEW RUN. Type in a run name that will identify this run of data for you. Choose a name that will help you remember where this data came from, perhaps a station number and direction of travel.
Page 23: Troubleshooting
HAPTER UICK TART START ANOTHER RUN You may now start a new run the same way you did the last one. TO VIEW REPORTS ON THE 2277 COMPUTER You can get any and all reports right on the RFCOLLECT menu on the 2277 computer. Single-Tap the Run you are interested in to make it dark.
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Page 25 HOW & WHERE THE DATA ARE STORED Your data is kept for you in folders on the 2277 Tablet's “Storage Card” (Face Company SD Card). This database is in a special format that makes it easy to store, display, process, and compare data.
Page 26 Turn on the 2277 Tablet and start the RFCOLLECT program. There are three methods to start the program: Please be sure that the Face Company's SD Card is in the slot on the right side of the computer before you start.
Page 27 4 COLLECT HAPTER Tablet begins to start to drain its internal battery. The LED just above the Tablet’s “On/Off” button will be both green and red when it is fully charged. When the Tablet is being fed by the Handle Battery, this LED will be red. This LED will stay red so long as the computer is getting more than about 5 volts from the Handle Battery.
Page 28 4 COLLECT HAPTER RPH (Survey Speed, in R eadings P er H our) Note: RPH is used only when you are NOT using the Trigger, so you can ignore RPH if you are using the Trigger. The Survey Speed setting changes the length of time between successive Dipstick readings while in the Auto Read Mode.
Page 29 4 COLLECT HAPTER  Tap “OK” and you are ready to go. It’s that simple. But you must remember to change the Foot Spacing under SETTINGS/HARDWARE if you ever move the Moon Feet to different holes. And if you use the Variable Foot Spacer Bar, you must be certain to use the correct pairs of holes in the bar, and you must change the Foot Spacing under SETTINGS/HARDWARE to match the actual Foot Spacing.
Page 30 4 COLLECT HAPTER never stops swaying, the Dipstick will only be able to collect data very slowly, and only at those instances when the structure stops and changes direction. Under these circumstances, you'll want to use the “Averaging” mode of data collection. You select the number of internal readings to average (either 2, 4, or 8) and you select the “allowable difference,”...
Page 31 4 COLLECT HAPTER Allowable Difference The allowable difference is the range that you allow the readings being averaged to vary from one another and still be valid. For example, if you set the averaging for 04 readings and set the allowable difference to .004"...
Page 32 4 COLLECT HAPTER times the design slope. If you are measuring a tilted slab, you will find it convenient to measure all runs up the slab first, using the design slope, and then change the design slope to zero and make all the transverse (horizontal) runs.
Page 33 4 COLLECT HAPTER WALK THE DIPSTICK DOWN THE TEST LINE Single-tap the "Start" button on the screen and hold the Dipstick steady, then press the Trigger and wait until the Dipstick takes the first reading. You always press the trigger from front to rear. Once a reading has been captured, the beeper will sound.
Page 34: Processing Data
4 COLLECT HAPTER The name of the Run is shown at the top of the graph and the IRI is shown at the bottom of the graph. Tap the "Close" box at the upper right corner to close the graph display. You can bring the graphs up again, either one at a time or in several on one page, by using REPORT/GRAPH.
Page 35 4 COLLECT HAPTER COLLECTING ELEVATION PROFILES IN WHEELPATHS The best way to collect elevation profile data in wheelpaths is to use a series of "boxes" that are collected end-to end. OVERVIEW OF COLLECTING DATA IN WHEELPATHS You will walk a "box" pattern on a test site, starting on the right wheel path, walking down the right wheel path in the direction of traffic some convenient distance (we suggest 250 steps), turn left, walk across the lane to the left wheelpath, turn left again, walk back in the left wheelpath against the direction of traffic flow, and turn left once more to walk back to finish the run at the...
Page 36 4 COLLECT HAPTER that you really only need to make a half-circle, or even a quarter-circle, if you make it in the correct location. 3. Start a new Run and collect data along the right wheelpath. We suggest you name this Run "B1"...
Page 37 4 COLLECT HAPTER COLLECTING THE REMAINING BOXES Point 506 Box 1 Point 256 Box 1/Point 506 Box Point 256 Box 2/Point 506 Box Point 256 Box 3 Box 1 Box 2 Box 3 Start/end Box 1 Point 250 Box 1/Start/end Box 2 Point 250 Box 2/Start/end Box 3 Point 250 Box 3 7.
Page 38 4 COLLECT HAPTER When you reach the end point (~250 steps) on the right wheelpath and after you have marked a circle around the Moon foot at that location, pick up your Dipstick and go across and mark the desired location directly opposite.
Page 39 4 COLLECT HAPTER OTHER SPECIAL DATA COLLECTION FEATURES MAKING NOTES While you are collecting data, you may wish to make notes for reference purposes later on. (Locations of sawcuts or cracks in the pavement, corners of a box, etc.) Your RFCollect Program allows you to make and save notes using the 2277 Tablet as you collect data, either by tapping a special letter or by typing the notes.
Page 40 4 COLLECT HAPTER APPEND Append allows you to collect new readings and add them to an existing run from any point on an existing Run. This is useful when you wish to extend a line that was started earlier but not completed or to remeasure part of a line that was already measured, or to correct a False Reading.
Page 41 4 COLLECT HAPTER NON-STANDARD SPACING or NON-STANDARD DATA COLLECTION The Dipstick you purchased can be used without any other attachments to measure at any of three different data spacing intervals – 250 mm, 300 mm, and 12". Note that 300 mm is not exactly the same as 12".
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Page 43: Sd Card Reader
Transferring data from the 2277 Tablet to another computer This is easier than ever with the SD Card Reader supplied with the Dipstick 2277. You should download your data daily as a means of "backing up" your data. This way you will have copies of the data in two places on two different storage media, and will minimize the risk of losing data.
Page 44 5 PROCESS HAPTER SELECTING RUNS To Process data, you'll need to know how to select Runs, either one at a time or in groups of two or more, so you can process them. Selecting multiple Runs is easy, but is slightly different between doing it on a PC and on the Tablet.
Page 45 5 PROCESS HAPTER TO PROCESS DATA IN EITHER PROGRAM: To use any of the routines in RFCollect or in RoadFace 6, you must first open a Job. OPEN A JOB When you start either the RoadFace program for Windows laptops and desktops or the RFCollect program on the 2277 Tablet, the program will always automatically open your last Job, whether you want to use it or not.
Page 46 5 PROCESS HAPTER The original Run will be unchanged. Minor, reversible changes can be made using the EDIT/HEADER routine, but any permanent change will result in the creation of a new run. B = This run has an individual Run Data Collection BIAS applied to it. P = This Run has had a Start Point Elevation applied to it.
Page 47 5 PROCESS HAPTER ASCII Elevations You may create ASCII Elevation Files from the data you have already collected by using REPORT/ASCII ELEVATION FILE. The Elevation file will be saved in the active Job folder with the name of the Run, as shown in the picture below. The file name will look like this: Runname.ELV Don't be disturbed by the file extension ".ELV".
Page 48 5 PROCESS HAPTER Half-Car IRI If you select two Runs and use REPORT/IRI, you will get a graph which displays the cumulative value of the "Half-Car IRI" at each point on the profile, as well as the 50-ft running Half-Car IRI. The half-Car IRI is based on the motion of the center of a transverse axle, at a point halfway between the left and right wheelpaths.
Page 49 5 PROCESS HAPTER These digital “notes” can be a handy way to make note of features on the pavement surface. Think of this as just another way to make notes for your use later. You can write notes on your hand or on a small scrap of paper, and this might work in the short run, but sooner or later you’ll need to wash your hands, and you’ll eventually lose that little scrap of paper.
Page 50 5 PROCESS HAPTER GAP UNDER THE STRAIGHTEDGE or " in Ten" [Only available on the desktop program - RoadFace 6.X only] To Make a Report using a "Gap Under a Straightedge" type Spec : At the Run level, select the Run that you want to analyze, then use REPORT/GUSE (The Acronym “GUSE”...
Page 51 5 PROCESS HAPTER The Graphic Report shows a profile graph, with the bottom edge of the Straightedge shown in pink, and a line that shows the maximum allowable Gap under the straightedge in red. You can move the Straightedge across the graph by using the " > " and " < " arrows that are just to the right of the "M" on your keyboard.
Page 52 5 PROCESS HAPTER EDITING RUNS To Edit a Run Header: Select a single Run or multiple Runs and use EDIT/RUN HEADER. You may change whatever information you need to correct. Be very careful not to change the footspacing or Metric/Imperial information unless you are sure of what you are doing.
Page 53 5 PROCESS HAPTER FIXING FALSE READINGS There are two steps to Remove a False Reading:  Select (highlight) the False Reading and press the “DELETE” button. The old Reading disappears and all the subsequent readings automatically move up to fill the hole where the deleted reading used to be.
Page 54 5 PROCESS HAPTER HAND-ENTERING DATA [Only available on the desktop program - RoadFace 6.X only] If you wish to enter data from manually collected runs, first open an existing Job, or create a new Job and go to the Run level. If there are no runs in the new Job, it will display a blank screen. If there are already some Runs in this Job, they will be shown on the Run List.
Page 55 5 PROCESS HAPTER PROCESSING ELEVATION PROFILE DATA IN WHEELPATHS The best way to collect elevation profile data in wheelpaths is to use a series of "boxes" that are end-to end. These boxes each consist of 4 sequential straight lines, 90 to the adjacent lines, with the 4 line ending at the same location as the start point.
Page 56 5 PROCESS HAPTER PROCESSING BOX DATA - DETAILS UnBox the first Box You can view the Run Notes by highlighting the first Box and using REPORT/NOTES to display the Run Notes. You will NOT need to write the numbers down. Highlight the first Box and use EDIT/UNBOX to unbox the Run.
Page 57 5 PROCESS HAPTER LINKING RUNS Any two or more runs may be joined together to create one long continuous run by using the Link routine within the Edit header. 1. Select the first Run, (Box1_A) then select the second Run. (Box2_A) Be sure you select the Runs in the sequence you want them linked.
Page 58 5 PROCESS HAPTER TEST TRACK "Test Track" creates two smaller records from a larger one. This routine assumes that you have walked a line "out-and-back" and you finished the run at the same spot where you started it. Why do it? Use this menu item when you want to check the performance of the Dipstick, after walking the Dipstick carefully on your Test Track.
Page 59 5 PROCESS HAPTER Here's what an "out-and-back" Run looks like before using the "Test Track" Routine: It's 100 ft long, and it is symmetric about the Turnaround Point at 50 ft. After using EDIT/TEST TRACK, here's what it looks like when you graph both parts of the line: Now we have two separate 50-ft lines, and the profiles lie on top of each...
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Page 61 Chapter 6 The 2277 Tablet Computer Stylus Face Co. SD Card RFCollect Icon (on side) Power Rubber Properties Port Cover Brightness control Power Indicator (green/red/black) AC Power Socket Calibrate Stylus (on side) Reset Button “ Get Keyboard” Icon Touch Screen On/Off Button “Get Desktop”...
Page 62 If the tablet doesn’t turn on, follow the procedure on the page 6-5 to get it to turn on. STARTING THE RFCOLLECT PROGRAM There are several methods to start the program: Please be sure that the Face Company's SD Card is in the slot on the right side of the computer before you start.
Page 63 Chapter 6 The 2277 Tablet Computer TRANSFERRING DATA TO ANOTHER COMPUTER Transferring data from the SD Card to the hard drive of your PC or laptop is called "downloading" or "backing up" the data. Regardless of what you call it, you should always do it daily, so you will have two copies of your data - one on the SD Card, and one on your laptop or PC.
Page 64 Chapter 6 The 2277 Tablet Computer HANDY TIPS FOR USING THE 2277 TABLET: USING THE HANDLE BATTERY TO POWER YOUR 2277 TABLET: Always (ALWAYS) use the Dipstick's Handle Battery or the AC Adapter. If you use the 2277 Tablet’s built-in Lithium-Ion battery to power the tablet, it will work fine, but will only last a few hours.
Page 65 Chapter 6 The 2277 Tablet Computer CHANGING THE SCREEN BACKLIGHTING: The number of hours of operation that you can expect to get will depend in part on how bright you set the Tablet’s screen backlighting. For outdoors in full sunlight, set the backlighting to max.
Page 66 Chapter 6 The 2277 Tablet Computer STARTING A “DEAD” TABLET COMPUTER: If your computer just won’t turn on, it is likely that the battery may be dead. Maybe you forgot to recharge it or maybe it was turned on accidentally and ran itself down. Even if you connect it to a Handle Battery or an AC Adapter, if it is completely dead, it will take a good bit of charging before it will start up.
Page 67: Temperature Range
Chapter 6 The 2277 Tablet Computer CALIBRATING THE TOUCH SCREEN If the tablet does not seem to recognize your stylus taps, you may need to recalibrate the touch screen. To do this, close or minimize the DFDC program by tapping the icon in the lower right corner.
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Page 69: Chapter 7 Maintenance
Chapter 7 MAINTENANCE ® DIPSTICK CARE AND OPERATION The Dipstick requires very little in the way of maintenance but there are a few things to remember that will help prolong the Dipstick’s life and accuracy. MOISTURE The Dipstick has been sealed at the factory and will resist humidity and a few drops of water; however it is not completely waterproof.
Page 70 Chapter 7 MAINTENANCE The black parts are coated with a very hard flat black powder coating with a textured finish. Small nicks may be easily touched up with an indelible black felt-tipped marker. Never use water or detergent on the Dipstick. If it gets wet inside, the water may destroy components inside of the Dipstick unit and render the Dipstick inoperable.
Page 71 MAINTENANCE ® DIPSTICK BATTERY Your Dipstick 2277 is powered by a rechargeable Ni-Cad battery pack that is contained in the ® body of the Dipstick unit. You can expect 10 hours or more of operation before recharging is necessary. The computer will monitor the ®...
Page 72 2277 Tablet computer's AC adapter to charge the Dipstick. You can tell which AC adapter belongs to which device by matching the “FACE” logo on the AC Adapter to the “FACE” logo on the Dipstick.
Page 73 Chapter 7 MAINTENANCE As a temporary measure, you may also use "rechargeable alkaline" batteries in the Dipstick. “RECHARGEABLE ALKALINE” BATTERIES ARE NOT THE SAME AS NI-CAD Also, “NICKEL METAL BATTERIES and must never be charged in the Dipstick. HYDRIDE” BATTERIES AND Li-Ion BATTERIES ARE NOT THE SAME AS NI-CAD ®...
Page 74 ® light on the bottom of the Dipstick will light up. You can tell which AC Adapter belongs to which device by matching the “FACE” logo on the AC Adapter to the “FACE” logo on the Dipstick or Tablet computer.
Page 75 Dipstick's port. The version shown above is a new Dipstick 2277, which does not need a "Pig-tail" connector. The "Pig-tail" is shown in the photo to the right. If you have a "Pig-tail", you must always use it! "Pig-tail"...
Page 76: Backup Battery
Chapter 7 MAINTENANCE HOW TO DETERMINE THE CHARGE IN THE HANDLE BATTERY ® It is very important to keep the Dipstick Handle Battery fully charged and to always use the Handle Battery to power the 2277 Tablet. Otherwise, you'll be using the Tablet’s rechargeable battery every day, and you run the risk of losing power to the 2277 Tablet while collecting data.
Page 77  If this does not solve the problem, use the card reader to copy the RFCollect program and 3 DLL files from your Face Co. CD to the Storage Card.  You have more than one copy of RFCollect open and they are Error message: competing for the Serial Port.
Page 78 "on" time:  Purchase 10 AA-size Ni-Cad batteries and install them in the If this fails to give at least 10 hours battery pack, or return the Dipstick to the Face Company for of "on" time: replacement of the Ni-Cad batteries.
Page 79 8 - TROUBLESHOOTING HAPTER False Readings  You must keep track of which end of the Dipstick (battery or ® If the Start end of the Dipstick start end) is forward after a reading has been taken. forward, sequential sequential number displayed by the computer should be an odd reading number is even, number when the Switch/Start End of the Dipstick is in the forward position after that Reading has been taken.
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Page 81 9 - BIAS HAPTER DATA COLLECTION BIAS WHAT IS BIAS? Data Collection Bias is a small, relatively consistent error which may be introduced when taking measurements on a Dipstick. Bias will have no effect at all on Roughness Indices like IRI, but will have a very small effect on the slope of the profile, and a larger effect on point elevations, particularly on long runs.
Page 82 9 - BIAS HAPTER dirty surface. When the foot is placed down and a reading is taken, the sandpaper grains do not necessarily mesh perfectly with the surface texture imperfections on the pavement. When the Dipstick is pivoted around this foot, the grains in the sandpaper tend to mesh better with the imperfections on the pavement.
Page 83 9 - BIAS HAPTER report that it is going “uphill” every step, even though it really is not. The profile produced by this run will show a pronounced uphill slant because of the artificial tilt. Direction of travel Start Point True Profile of Beach Volleyball Court (Sand) Profile Reported By Dipstick (with Bias) Of course, you will probably never measure the surface of a beach volleyball court, so the...
Page 84 9 - BIAS HAPTER HOW TO DETERMINE DATA COLLECTION BIAS You can easily determine how much Bias there is on a particular pavement surface by knowing either  The true elevations of the start and end points, or  The relative elevations of the start and end points, or by ...
Page 85 9 - BIAS HAPTER How To Determine Data Collection Bias Using An "Out-And-Back" Run To determine Bias, the Dipstick must be walked in a closed loop, where the first reading and the last reading finish on the exact same spot. This can be a box, circle or straight line.
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Page 87 Collecting Elevation Profile Data in Wheelpaths Appendix A This is an excerpt and synopsis from Chapters 4 and 5, COLLECT and PROCESS. The best way to collect elevation profile data in wheelpaths is to use a series of "boxes" that are collected end-to end.
Page 88 Collecting Elevation Profile Data in Wheelpaths Appendix A you really only need to make a half-circle, or even a quarter-circle, if you make it in the correct location. 3. Start a new Run and collect data along the right wheelpath. We suggest you name this Run "B1"...
Page 89 Collecting Elevation Profile Data in Wheelpaths Appendix A COLLECTING THE REMAINING BOXES Point 506 Box 1 Point 256 Box 1/Point 506 Box Point 256 Box 2/Point 506 Box Point 256 Box 3 Box 1 Box 2 Box 3 Start/end Box 1 Point 250 Box 1/Start/end Box 2 Point 250 Box 2/Start/end Box 3 Point 250 Box 3...
Page 90 Collecting Elevation Profile Data in Wheelpaths Appendix A When you reach the end point (~250 steps) on the right wheelpath and after you have marked a circle around the Moon foot at that location, pick up your Dipstick and go across and mark the desired location directly opposite.
Page 91 Collecting Elevation Profile Data in Wheelpaths Appendix A The program will automatically name the four legs Box_A, Box1_B, Box1_C, and Box1_D. After the legs are separated, the computer will automatically calculate the IRI of each leg. (Assuming the legs are long enough to get an IRI) You will then unbox each of the other boxes in turn to create Box2_A, Box2_B, and so on.
Page 92 ® Appendix B Road Dipstick Capabilities The Dipstick was invented and developed specifically for measuring the roughness of highways and the flatness and levelness of floors. However, because of its inherent ability to measure elevation differences very precisely, the Dipstick has been found to have other uses that can be very valuable.
Page 93 ® Appendix B Road Dipstick Capabilities 9. The Dipstick can be used to measure the difference in elevation across construction joints, where two slabs are supposed to be at the same plane. 10. The Dipstick can be used to measure the motion of a slab as a piece of heavy equipment passes over a joint.
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Page 95 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Why do it?  The Dipstick will enable you to collect elevation data that is much more precise than that available from a Rod and Level. If you need to know exactly how a surface looks in 3-D, or if you need very precise elevations of points on the surface, you can make a 3-D elevation study on your own.
Page 96 Appendix C Elevation Studies & 3-D Dipstick Topo Maps "Out-and-Back" lines This is the simplest method, and is often very satisfactory to achieve the desired result, if all you need is data for certain specific locations. (Why measure the whole surface if you don't need to?) Here's an example showing how this technique might be used: One major aircraft manufacturer measures the deflection of runway and taxiway pavement by starting from a point that is sufficiently remote from the aircraft that it is assumed to be unaffected by the presence or absence of the aircraft.
Page 97 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Concentric Boxes Connecting Lines Overlapping Bases The colored “Boxes” above show one way to make a grille or grid of overlapping boxes. Box1 (the red box) is the exterior box; Box2 (the blue box) is concentric and overlaps the red box; Box3 (the green box) is again concentric and overlapping;...
Page 98 Appendix C Elevation Studies & 3-D Dipstick Topo Maps This is a sample of a “ladder” type of Box arrangement. The first box goes all the way around the perimeter, and the secondary boxes fill the inside like ladder rungs. Arrows show the direction of data Collection –...
Page 99 Appendix C Elevation Studies & 3-D Dipstick Topo Maps After you have gone as far as you want to, say 50 ft, stop and mark a circle around the front foot. Don't stop the run on   the pocket computer, just stop rotating the Dipstick for a moment while you mark the surface.
Page 100 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Processing the Data Combs Download the data to a PC. Calculate the Data Collection Bias from the Base Line, and apply this Bias to all runs. If your "Teeth" runs are long, you may want to calculate the Bias on each run independently and apply that Bias to the run it was collected on.
Page 101 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Step 1 – Collecting the Outer Box You’ll collect the first box that bounds the exterior perimeter, 36 ft on a side. Start at the northwest corner in the drawing to the right (marked Box1 Start/End) and walk the Dipstick south until you reach the end of the area to be measured.
Page 102 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Step 5 – Entering the data into a spreadsheet ® Open the ASCII files with a spreadsheet program like MS Excel . If your computer says it cannot open the ELV files, ®...
Page 103 Appendix C Elevation Studies & 3-D Dipstick Topo Maps Make a Graph Finally, make the graph or 3-D plot following the instructions for the spreadsheet or graphing software.
Page 104 Appendix D Dipstick Hints & Tips DS 2277 1. You can’t delete an original run. 2. Don’t put alkaline (or other) batteries in your Dipstick body unless you cover the recharge port with tape. 3. Never allow your computer to run out of battery power. The new Tablet is VERY bright, but this takes lots of power.
Page 105 Appendix E - Test Track Calibration Checks and Your Test Track ® We strongly recommend that you make yourself a test track and use it to verify that your Dipstick working correctly. If you ever question the Dipstick, the test track will tell you if it’s OK or not. Making a Test Track: 1.
Page 106 Appendix E - Test Track 6. Tap the “Close” button on the top right of the graph, select the run you just collected, and use CALCULATE/BIAS. 7. The Bias should be small, between 0.0005 and 0.002, but certainly not more than 0.003. The value of the Bias will depend on the surface texture of the floor you are walking on, as well as how clean it is.
Page 107 Appendix E - Test Track 11. Close the program and save the Test Track data where you can find it easily. Checking Calibration ® The Dipstick 2272 is calibrated at the factory. The calibration constant is very stable, so during a normal ®...

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Dipstick 2200 series