Lets the laser detector travel the full working. Optical Version Direct Reading/ True Elevation Rods. Grade Rods: All About Grade Rods. The main thing that sets grade rods apart from other measuring devices is their ability to come in different lengths and thicknesses, depending on your preferences and needs. Set rod foot on the elevation you wish to use as your reference; i. e. finish grade, subgrade, etc. GR1000IT Inches • 10ths. A grade rod, also known as a level, is a device that can be used to measure a slope. How long is a leveling rod(grading rod)? Both types offer advantages depending on your specific surveying needs, but before you make your decision it's important to understand what each one offers. For instance, if you're measuring a small area or using a narrow rod, 16 or 18 diameter will give you better accuracy than a larger 22-24 diameter rod. This section is marked either in the decimal form of feet, tenths and hundredths of a foot or in feet, inches and fractions. Remember to convert the fractions into their LCD (lowest common denomenator) to make computations easier. This task often requires leveling instruments. Here's how it works... What is grade rod, how to use grade rod and how to install a grade rod.
The cross point on the target is the area where the colors meet in the center. Target Vernier Scale. Laserline GR1450 Series Direct Reading Grade Rod - 15ft or 5 meter reading. No special rail for the laser detector. How to Buy and Use a Grade Rod. This brings me back to that telescoping stick thing I mentioned earlier. That means there are different ways to read these survey rods. Models to choose from: Laser version Direct Reading is a grade rod with a moveable tape face allowing you to set the actual benchmark elevation, or any elevation, above or below the bench into the rod. They're usually made of fiberglass, aluminum, steel or plastic, although there are glass-reinforced varieties for added durability. How to Read a Builder's/Architect Grade Rod. Since the engineer's rods have a decimal system, it is much easier to use for calculations. What do you call it?
The tenths of each foot are marked with black numbers, and the hundredths of each foot are marked as tick marks in between the numbers. This allows faster and easier. Rod targets are typically an oval-shaped metal plate that attaches to the rod. LaserLine 10' Direct Read Lenker Rod inches - GR1000I. Set rod foot on a benchmark or hub with a known elevation; i. e. 2, 525.
Manufacturers One Year Warranty. Fortunately, this video offers a comprehensive explanation of reading all kinds of leveling rods. Direct elevation rods provide a convenient way to examine and record elevations. One common point of confusion for customers (and for me) is the many options of rods. If you don't need the whole length of the rod, don't extend the upper sections, as it will just make it more difficult to keep plumb with any kind of wind blowing. View/Download Directions for using a Direct Reading Rod.
The LR-STD series are round and have a small diameter allowing easy handling. That number is your true elevation. Readings because it takes the awkwardness. How do we record our data in fields 52 through 55? The "Philly" rod, named after the city it was created in, contains two wooden sections. Higher numbers on bottom. Vectors Inc. recently added LaserLine brand direct reading rods to our inventory. They need to be handled with care and protected from objects that could damage or scratch the numbers painted on the instrument. The GR10T 10' Lenker Style direct reading level rod, gradations in feet/tenths, allows you directly observe the true elevation of any point on the job site without any performing any calculations. Since NO math is involved, grade shots are much faster than conventional style rods.
EXAMPLE: Rod reading is in "BLUE" section 1. Brackets not included. Along with all other Grade Rods, it is important to ensure that the Philly rod is fully extended; if it is only extended partially, the graduations will not be accurate. Why should a leveling rod(grading rod) be used to determine elevations? Roll the tape until the laser detector pointer is at zero (between the blue and red sections). Detector rail is black, high density and U. V. stabilized for long life. Engineer's rods have graduations that are measured in feet, as well as tenths and hundredths of a foot. 4-Foot Rod Extension: Allows you to extend the GR1000 Series Direct Reading Grade Rods in 1-foot increments up to 4 additional feet. For use with a laser detector. For maximum functionality and versatility, it is available with different graduations and color-coded cut and fill markings.
I have also heard the leveling rod referred to as an Engineer's Rod. Warranty: - One year manufacturer's warranty on all parts for normal wear and tear. Tape lock grommets are oversized. FREE SHIPPING to the continental United States only! Laser Version Direct Reading/True Elevation Rod: For use with a laser detector. Both have a 5/8" x 11 female thread on the top to attach a prism. Run laser receiver up or down the side of the rod and / or raise or lower front rod section until you get the "on grade" signal on your laser detector. SECO's offerings include: Eighths - might also be called Inches. It's specifically designed to not become brittle when exposed to ultraviolet rays or direct sunlight. Grade Rods also use different graduations.
Using your optical instrument, just read the number across the horizontal line. There are also leveling rods that feature integrated bubble levels so that measuring can be done accurately. SECO offers leveling rods in 8', 17', 25', and other extended lengths. The prefix number is measured to the nearest tenth place and is always added to each additional reading.
You have now locked into the rod elevation (2, 525. Easy on the eyes in bright sunlight. SECO classifies their leveling rods in groups determined by their shape. The safest place for a Grade Rod to be stored is upright in a protected area. Please Note: Pictured laser detector bracket not included. Certain discrepancies can occur if the next elevation mark after the benchmark is below the benchmark elevation. They are white, orange and red to make for easy reading and can be placed anywhere on the rod. GR1450: 15' L - Feet/10ths & Cut/Fill.
For leveling rods with metric graduations: - Tenths of meters - marked by huge numbers. Eighths of inches are marked by ticks between the numbers--the top of the ticks are even eighths, and the botom of the ticks are odd eighths. For lumber, this is determined by evaluating it on the structural grading system, also known as the grade rod method. Each foot on the Philly rod is divided into hundredths of a foot. Although there are a few disadvantages in using a direct elevation rod, most users find them more convenient than other Grade Rods. FLT P/N #:LLMGR10T In Stock. Instead of moving the rod from the turning point, the instrument is moved to a new location. 00 Your Price: $179. If you don't know the name of what you need, send the sales team at Vectors Inc. a picture or bring in the item for us to see. Tape lock grommets are over-sized and made of heavy duty brass that greatly minimizes the problem of tape tearing. Grads: - #GR1000 10ths plus cut/fill.
The numbers being recorded add up neatly in columns and can be converted easily at the end of the calculations. For leveling rods with imperial graduations: - Feet - marked in red. The detector, then tighten the detector for. While the various rod types are useful in specific tasks, they can get a bit confusing to read, and reading their graduations is essential in getting the differences in elevation. Please select your preference from the menu above.
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