The ideal placement of irrigation pins depends on the soil consistency. The goal is to prevent the irrigation tubing or pipes from moving or being dislodged, whether the soil has a dense or loose consistency. In heavier soils, you can place the pins farther apart. For example, you should install irrigation pegs about 1.524 metres apart in dense clay soil. If the soil is sandy, you may need to install pegs as close as 30.48 cm apart.