The unit weight of the FRP grating is only a quarter of that of steel, but its load capacity is equivalent to that of steel. Because of its light weight, it is more convenient to cut and install as a good building material.
Many buyers always ask about how to calculate the weight of FRP gratings when they inquire about the fiberglass grating. The problem depends on the thickness and area of the grille. And it also depends on the rate of fillers added when making the grate, what kind of resin it is, and how much glass fiber is used. It also affected by whether the surface of the grating is non-slip gritted. Therefore, this calculation of grates cannot be generalized. Generally, frp grating weight chart per square meter without being gritted is as follows:
| Thickness | Grid / Mesh Size | Unit Weight Per Square Meter |
| 25mm | 38*38*25 | 12.6kg |
| 25mm | 40*40*25 | 12.3kg |
| 30mm | 38*38*30 | 15kg |
| 38mm | 38*38*38 | 19.6kg |
| 50mm | 50*50*50 | 21.5kg |
| 30mm | 19*19*38 | 19.2kg |
| 38mm | 19*19*38 | 24kg |
| 50mm | 38*38*50 | 35kg |
| 3mm / 5mm | solid top | 6kg / 11kg |
First of all, we must determine what thickness of FRP grating to use: the load-bearing capacity of FRP grating is calculated and chosen according to the thicknesses of: 25mm-about 1 ton, 30mm-about 3 tons, 38mm-about 6 tons, 50mm-about 9 tons.
Since the size of the entire glass fiber reinforced plastic grating is fixed, the general size of the entire sheet is 1 x 4.04 meters 1.22 x 3.66 meters. It is necessary to calculate which size of the entire panel is more appropriate to reduce unnecessary loss. After choosing the specifications of the grid plate, the grid square meters can then be calculated.
Calculate the total area of the FRP grating: first measure the size of the place where the grating is needed. According to the length multiplied by the width equal to the area, accurately calculate the area that needs to be laid, and then calculate the actual laying size according to the statistics. Compare the size of the glass fiber reinforced plastic grid to see which product of the whole board size can be selected to maximize the size of the laying area we need. After deciding which size of FRP grating to choose, calculate how many full-slab gratings are needed in an area, and the size of the remaining material after cutting, then calculate whether the remaining material can be used for this size. In this way, the calculation of the total area of the grate is completed. Next, it is easy to calculate the total weight of all the FRP gratings in the project based on the weight chart above.
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