Check out this video on how to use a direct reading rod: 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. A grade rod, also known as a level, is a device that can be used to measure a slope. Caring For a Grade Rod. Manufacturers One Year Warranty. Tape has heavy duty matte textured face: Easy on the eyes in bright sunlight and protects the tape numbers from wearing and fading. 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. If you find yourself in need of a Grade Rod but cannot afford one, you can always use the old-fashioned method of a strip of wood and a tape measure. Manufacturer||LaserLine|. The LR-PRO series rods have a larger diameter so that it is sturdier and easier to read at higher heights. How to Read a Leveling Rod.
This designation refers to rods that have graduations that measure in feet and tenths and hundreds of a foot. HOW TO READ CUT & FILL. Tape lock grommets are oversized, Heavy duty brass. Solid tape lock with internal brake slide: Allows for a strong, trouble-free operation. Grade Rods, Level Rods, Philly rods, oh my! This is a completely different kind of rod.
Here's how it works... What is grade rod, how to use grade rod and how to install a grade rod. Most sources cite the Philadelphia, or Philly, rod as the most often used leveling rod. 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. Frequently Asked Questions. A rod target is used to give the operator a larger area to focus on and is commonly used with Grade Rods. When I first began working for Vectors Inc. almost four years ago I walked into an entirely new world filled with strange equipment. This task often requires leveling instruments. How to Use a Direct Elevation Rod. Able to go up to 72". Their increments can be confusing too. FLT P/N #:LLMGR10T In Stock.
Since leveling rods are mostly used outdoors, they are designed to be durable and waterproof, so there's no need to worry about them getting damaged in tough field conditions. Vectors Inc. recently added LaserLine brand direct reading rods to our inventory. You have now locked into the rod elevation (2, 525. Length in Grade Rods varies greatly. For use with a laser detector. For lumber, this is determined by evaluating it on the structural grading system, also known as the grade rod method. It features high-strength, clear anodized aluminum front and rear rods that will not rust, split, swell, or warp ensuring long-lasting performance. You'll also want to think about how far out from your survey point you plan on getting measurements; shorter rods are typically easier to use because they minimize measurement errors caused by changes in elevation over longer distances. This black, UV-stabilized detector rail withstands long exposure to UV rays without becoming brittle. Metric Philly - The Philadelphia Rod, or Philly Rod, is the most common engineer's rod. That way, when your project goes out further than anticipated, it won't throw off your measurements if you can connect some more rod and still get accurate results. This question is related to field 83, which may also rely on a "real" eye height. Read across from the detector pointer and the tape will tell you how much to cut or fill. Many grade rods come with protective caps that keep any rough edges from damaging surfaces and getting in accidents between uses.
Rod targets provide more accurate readings to be made and are essential for use when there is poor visibility or other factors that could hinder the readings. The instrument is then leveled and adjustments are made to correctly make new measurements. LaserLine's Laser Grade Rods are the number one seller in the USA, and there's a reason - Tremendous Quality. GR Series Direct Reading (Lenker Style) Grade Rods. 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. Its tape lock grommets made of brass are oversized to prevent the tape from tearing.
Higher numbers on bottom. There are also leveling rods that feature integrated bubble levels so that measuring can be done accurately. LaserLine 10' Direct Read Lenker Rod inches - GR1000I. Protects the tape numbers from wear and fading. The elevation of the benchmark is used as a prefix number. The cross point on the target is the area where the colors meet in the center. Direct Elevation Rod. Both have a 5/8" x 11 female thread on the top to attach a prism. The detector, then tighten the detector for. Rods utilize tough and rugged DuPont nylon parts for long-lasting life. Adding a vernier scale to the rod target allows the measurements to be exact to 1/1000'. Stronger, trouble-free operation. Aluminum front and rear rods.
Why should a leveling rod(grading rod) be used to determine elevations? The measuring system on a builder's rod is similar to a tape measure which makes it more comfortable and familiar for builders. Aluminum rods may adjust length by sections telescoping inside of each other while wooden rods have sections that are attached to each other with slip joints. Lets the laser detector travel the full working. HOW THEY WORK: Direct Reading/True Elevation Grade Rod. The Philly rod has a front side as well as a back side. My lack of land survey equipment familiarity made my new job feel a tad overwhelming. The scale on the side of the leveling rod can vary greatly based on a particular job or the user's preference. High density black detector rail: U. V. stabilized for long life. The Complete Guide to Grade Rods.
Although all grades have a general frame in which they function, their differences come down to measuring units and angles. UB-1 Universal Bracket: Works with virtually all receivers. Divided into feet, inches, and fractions of inches. How long is a leveling rod(grading rod)? Tough, lightweight, and versatile, these direct reading (lenker style) laser rods bear the true test of quality in the field, and hold up exceptionally well. Some leveling rods are graduated on only one side, while others have measurements on both sides. GR1000IT Inches • 10ths. However, inches are marked in black and tick marks represent eighths of inches.
What a particular piece of equipment is called can vary regionally and sometimes names are used interchangeably. The LR-STD series are round and have a small diameter allowing easy handling. Laser and Receiver not included. When using a Grade Rod, be sure that it is fully extended for the most accurate results. 25 is the horizontal line on your optical instrument. Explain about each component used in a grade rod. Bench Elevation 2352. Tape lock grommets are over-sized and made of heavy duty brass that greatly minimizes the problem of tape tearing.