concrete drainage holes rectangular tubes cloth and the slabs prevent flooding urban reside |
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| navigate by keyword : area asphalt background backgroundvshaped block build cement cloth concrete construction design development dirty drain drainage equipment flooding floor foundation gray grid ground guttersconcept hole holes industrial industry infrastructure manhole metal object outdoor plate plumbing prevent rainwater rectangular reinforced repair reside residential road sewage sewer sewers shape sidewalk site slab slabs steel street structure system technology the tube tubes urban water waterway work |
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| Concrete drainage holes, rectangular tubes, cloth and drainage holes on the concrete slabs to prevent flooding in the urban residential area On a cement floor background.v-shaped drainage gutters.concept. |
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