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— 05 · Product

Square Storm Structure

Home / Products & Services / Square Storm Structure
Standard

Square Storm Structures | ASTM C913

Square Storm Structures are precast concrete bases, slabs, and risers used in stormwater management systems where square configurations are required for site conditions or project specifications. They provide durable, modular building blocks for above-grade or below-grade storm structures.

Schematics & Cut Sheets

3×3 Structure
TXDOT PJB Drawing Download PDF
3×5 Structure
TXDOT PJB Drawing Download PDF
4×4 Structure
TXDOT PJB Drawing Download PDF
4×5 Structure
TXDOT PJB Drawing Download PDF
5×5 Structure
TXDOT PJB Drawing Download PDF
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3 ft × 3 ft Structures

  • 3' × 3' × 3.5' Base (36" knockout)
  • 3' × 3' Risers (vertical feet)
  • 3' × 3' × 6" Slab Top
  • 3' × 3' × 6" Slab Top with 38" × 38" frame & grate (cast iron)
  • 3' × 3' Wye Top (with expansion joint and locking ring/cover)
  • 41" × 41" galvanized grate option

4 ft × 4 ft Structures

  • 4' × 4' × 4.5' Base (48" knockout)
  • 4' × 4' Risers (vertical feet)
  • 4' × 4' × 6" Slab Top
  • 4' × 4' × 6" Slab Top w/ 50" × 50" frame & grate (cast iron)
  • 4' × 4' Wye Top (with expansion joint & locking ring/cover)
  • 53" × 53" galvanized grate option

5 ft × 5 ft Structures

  • 5' × 5' × 5.5' Base (58" knockout)
  • 5' × 5' Risers (vertical feet)
  • 5' × 5' × 8" Slab Top
  • 5' × 5' × 8" Slab Top w/ 50" × 50" frame & grate (cast iron)
  • 5' × 5' Wye Top (with expansion joint & locking ring/cover)
  • 65" × 65" galvanized grate option

6 ft × 6 ft Structures

  • 6' × 6' × 6' Base (68" knockout)
  • 6' × 6' Risers (vertical feet)
  • 6' × 6' × 8" Slab Top
  • 6' × 6' × 8" Slab Top w/ 50" × 50" frame & grate (cast iron)
  • 6' × 6' Wye Top (with expansion joint & locking ring/cover)
  • Custom grate options available on request
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At The Turner Company, we’re committed to delivering high-quality precast concrete products and an exceptional customer experience. Guided by strong family values, our people help build the foundations of thriving communities across Texas.

Office

P.O. Box 885 (Mail)
11049 S. U.S. Highway 287 (Physical)
Rhome, TX 76078