12 in x 8 in x 18 in Allan Concrete Block

Description

12″ x 8″ x 18″ Allan Concrete Block Specialized Trapezoidal Opening Block Heavy-duty concrete masonry unit featuring a distinctive trapezoidal opening for drainage systems, retaining walls, and specialized construction applications requiring controlled water flow. Key Benefits Unique trapezoidal opening Superior drainage capacity Heavy-duty construction Erosion control functionality Structural stability Versatile applications Water management solution Interlocking capability Technical Specifications Dimensions: 12″ x 8″ x 18″ nominal Actual Size: 11-5/8″ x 7-5/8″ x 17-5/8″ Weight: Approximately 45-50 lbs Material: Portland cement and aggregates Opening Style: Trapezoidal center void Opening Dimensions: Tapered design Compressive Strength: 2,000+ PSI Color: Standard gray concrete Perfect For Drainage culverts Retaining wall systems Erosion control structures Water management Stormwater systems Agricultural drainage Landscape water features Civil engineering projects Installation Instructions Prepare level base with appropriate drainage media Align blocks with openings in flow direction Use concrete adhesive or mortar for secure placement Maintain consistent slope for proper water flow Stagger joints in multi-course applications Backfill with appropriate aggregate Consider geotextile lining for soil retention Ensure blocks are level side-to-side Pro Tips Plan water management requirements before installation Calculate flow capacity for your specific application Consider using rebar reinforcement for taller structures Apply waterproofing additives for critical applications Combine with solid blocks for customized drainage patterns Protect outlet areas with erosion control measures Clean opening periodically to maintain flow capacity Consider downstream impact in design planning Allan block, drainage block, trapezoid block, water management block, culvert block, retaining wall block, erosion control block, stormwater block

Key specifications

• Dimensions: 12 in x 8 in x 18 in nominal.; Actual Size: 11-5/8 in x 7-5/8 in x 17-5/8 in.; Weight: Approximately 45-50 lbs.; Material: Portland cement and aggregates.; Opening Style: Trapezoidal center void.; Opening Dimensions: Tapered design.; Compressive Strength: 2,000+ PSI.; Color: Standard gray concrete.