A grade rod is often used by a land surveyor, construction worker, or any other person who needs to make accurate measurements of grade elevation, especially as it relates to the differences between two points. Plumbers, concrete professionals, and farmers can also use this tool to measure elevation differences of almost any surface. This survey rod can come in a variety of models — each with their own specific applications. The tape mechanism can be moved up or down, so the elevation of a specific point can be measured. A laser can also be attached for more accurate readings.
We carry all types of measuring rods, including the following:
- Grade rods
- Level rods
- Direct elevation rods
- Sight rods
- Lenker rods
- Specialty smart rods
Like a leveling rod, this tool is essential for any building contractor, paving company, excavation company, concrete professional, or plumber. You can buy an aluminum grade rod, but a fiberglass model will last longer if you take care of it properly.
Frequently Asked Questions
What is a grade rod?
A
grade rod has graduations that can be used to measure differences in elevation, and it can be used with surveyor, optical, and laser levels. This kind of survey rod can be made of several different materials, but here are some of the most common:
It can either have adjustable segments or can be made of a single piece. The length of aluminum rods might be adjusted through a set of telescoping sections, while wooden rods can have sections that are attached to each other with slip joints.
How do I use a grade rod?
For this kind of survey rod to work, it will have to be extended to its full length. And it will need to be used with an auto or transit level. You will also have to determine the measurement points you need. The person holding the leveling rod (who is called the “rodman”) will hold it in a vertical position, but it needs to be plumb if you want to get an accurate measurement. Then, you can focus the instrument on the
grade rod, so the rodman can record the measurement.
Why are grade rods in tenths?
Some grade rods have measurements in feet, as well as tenths and hundredths of a foot. This kind of survey rod is called an “engineer’s rod.” The full foot numbers are marked in red, the tenths are marked in black numbers, and hundredths are marked as tick marks. This “decimal system” makes it easier for engineers to perform certain calculations, and they can add up neatly in columns. They can also be easily converted at the end of each calculation.
How do I read a survey rod?
For this kind of
grade rod to give you the most accurate measurement, it will have to be used with a leveling instrument. And the rodman will have to hold the rod in a vertical position. From there, you can focus the instrument on the grade rod so the rodman can record the measurement.
Where can I find a quality grade rod?
Whether you’re looking for a survey rod or some other tool you can use to measure grade, you can find what you need at Engineer Supply. We have a variety of measuring tools that are perfect for the working professional. Feel free to look at what we have in our inventory, so you can find a product that will meet your specific needs.