Water Tank Weight Calculation Support

I'm in need of an engineering professional with a sound understanding of material science and physics, particularly surrounding plastic as a material. The task is to calculate the weight of a plastic water tank that will be positioned above ground.

Key Points:
- Calculate the weight of a plastic water tank in kilograms
- Position of the tank: above ground
- Must have knowledge of material properties of plastic
- Ability to conduct engineering calculations with precision

Ideal Skills:
- Engineering background, particularly in structural design
- Proficiency in physics and calculations
- Experience in working with water tanks support
- Attention to detail and accuracy in calculations
- Previous experience with similar projects is a plus.