Building materials (non-metallic), comprising primarily sacks suitable for filling with water and made of PVC-coated fabric for use as retaining walls or basin walls, particularly for the purpose of channeling, retaining or absorbing water, and for flood control; Building materials (non-metallic), comprising primarily sacks suitable for filling with water and made of PVC-coated fabric for use as retaining walls or basin walls, particularly for the purpose of channeling, retaining or absorbing water, and for flood control
Nonmetallic Building Materials