How galvanized ground screw anchors are widely used in solar energy PV building construction?
How the galvanized ground screw anchors are widely used in solar energy PV building construction?
With the increased and extensive demand for the ground photovoltaic arrays, the demand and need for cost-effective foundation systems have also increased. However, the most significant support for the ground PV arrays is the concrete piers and steel pipes. But in recent years, engineers from PETROL STEEL CO., LTD are thinking about the great push for the out of the box options for the design of the system.
Therefore, they are focusing to get rid of the conventional options for the design system. The galvanized ground screw anchors provide a significant and reliable source for the design of the foundation system. Moreover, they also provide the best alternative and benefits as compared to the traditional options. Therefore, the use of the galvanized ground screw anchors is tremendous and demanding in the solar PV building construction systems.
What are galvanized ground screw anchors?
The galvanized ground screw anchors from PETROL STEEL CO., LTD are the best alternative to the typical foundation design options. They provide the additional features and benefits that are not present in the case of the traditional options. The working and performance of the galvanized ground screw anchors are similar to the helical piles. But the advantage of their use is greater as compared to the helical piles.
The use of galvanized ground screw requires much less steel, provides more adjustability, and needless specialized equipment for the installation. However, there is a very small number of galvanized ground screw anchors in the market. But they work in the same manner as the toggle bolt. They work by use of driving the tip of the steel into the ground with the help of a rod of steel.
How do galvanized ground screw anchors work?
To drive the tip of steel into the ground, we often use a hammer or do it by hand. After driving it, we attach it to the steel cable. In most cases, we drive the steel tip up to the depth of 2 to 4 feet into the ground. After making the connection between the steel tip and steel cable, we dig out the steel rod to remove it. The steel tip and steel cable remain in the ground.
After it, we attach the steel cable to a cranked winch. We do this for the moment until the steel cable produces resistance in the tension. The tension in the steel cable becomes the cause of the rotation of the steel tip. The steel tip rotates under this tension up to 90 degrees. This rotation of the steel tip causes it to direct bear the soil. However, the steel tip in the soil remains in place through the weight of the soil and tension present in the soil.
The angle may vary according to soil friction
The angle that is present due to the internal friction of the soil may be different for the different conditions. However, this angle largely depends upon the type of soil we use. However, if the angle is 45 degree and the ground screw anchor drive up to 3 feet into the ground, then it will contribute the cone of soil up to 30 cubic feet. This can provide enough uplift resistance for the material using the existing soil without the need for the concrete.
What are the basic requirements for the process?
The basic requirement for the use of the galvanized ground screw anchors in the PV arrays building construction is the following.
Firstly, we need the concrete piers which include the 12 diameter piers, the deep piers for the back and front legs, and the rebar cages in the process in the variable amount. The next requirement is the steel piles that include the deep piles for the back and front legs. In the next step, you need the grade beams that are also called the ballast blocks.
How the ballast blocks are important?
We need the different ballast blocks separately for the front and back legs. In most cases, the concrete block has an embedded surface into the ground. Moreover, it can resist the lateral load with the help of internal friction. The block should have enough surface area for this purpose. For the weight and surface area, the front and back legs have a connection to the same block.
What part helical piles play?
In this system, the range of each helical pile is about 5 to 6 feet. The lowest factor of safety for the safety tests is 1.5. However, this value can increase if we have to test the selected number of the galvanized ground screw anchors. The value may increase or decrease according to the number of galvanized ground screw anchors.
However, in the case of the load tests of the galvanized ground screw anchors, it is advisable to have the record and summary of the load tests. The purpose behind it is to provide this information to the engineer and have the justification and approval.
Factors for the PV building construction
There are environmental factors that have a significant impact on the process of PV building construction. Insolation is the first element that is the average amount of solar radiation that is coming at a particular area. The unit for determining the amount of solar radiation is kWh/m2/day. The climate and weather conditions are also important during this process.
The effect of the high ambient temperature is impactive on the output of the system. On the other hand, the rainfall and clouds cause maintenance issues for the output of the system. The structure and trees in the surrounding can provide shading to the system. Thus, it can reduce the output of the system significantly. The air pollution in the environment demands regular cleaning to avoid complications.
The distance from the equator also has a significant impact on the working of the system. The reason is that it affects the amount of solar radiation coming to the system. Also, there are many structural requirements including the electrical grid, batteries, and energy storage systems.
For more details of galvanized ground screw anchors, pls. feel free to contact PETROL STEEL CO., LTD.Related links: