enviroflex - interlocking articulating concrete block (acb)
TRANSCRIPT
ENVIROFLEX® Interlocking Articulating Concrete Block (ACB) Revetment System
Plantable concrete systems®
The premier alternative to rip rap and concrete lined channels!
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ENVIROFLEX® is an interlocking articulating concrete block (ACB) revetment system designed for erosion control use in riverine and channel environments or other areas with high velocity fl ows subject to scour.
Manufactured from fi ber reinforced concrete, each block interlocks with overlapped edges, eliminating the block’s ability to overturn under fl ow conditions. ENVIROFLEX® is free from protruding edges so cabling or other connection devices are not required for hydraulic stability. Openings in the block units enable vegetation to establish, providing a green, natural, and environmentally pleasing appearance while allowing stormwater infi ltration and promoting groundwater recharge. ENVIROFLEX® is FHWA tested.
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Cost effective and environmentally friendly.
The ENVIROFLEX® interlocking ACB system offers a cost effective and environmentally friendly
alternative to rip-rap, gabion mattresses, concrete or asphalt linings and other hard armor
systems. By requiring a thinner section, less trucking and lower maintenance costs, this unique
system provides ample opportunity for signifi cant savings over standard project costs. The
products ability to accept sediment infi ll from storm events allows the establishment of riparian
plants and enables cyclical natural habitat while providing a stable and scour proof bottom.
Channel lining
Dam/spillway overfl ow protection
Culvert outlets
Detention/retention basins
Embankments, levee stabilization
Wetland traffi c crossings
Boat ramps
Pipeline protection
Access roads
Bridge/pier protection
Drainage swales
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BEFORE BEFORE
DURING DURING
AFTER AFTER
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ENVIROFLEX® is an economical, durable, and environmentally sound soil
stabilization system. The palletized product can be delivered right to the
installation site and is easily placed with small track equipment in locations
where cranes would fi nd it diffi cult to reach. Using a specialized grappling
tool allows placement of four pieces at a time for rapid installation.
ENVIROFLEX® units conform to the following specifi cations:
4” ENVIROFLEX 6” ENVIROFLEX
Property Unit Value Value
Specifi c Weight lbs./cu. ft. 130 – 150 130 – 150
Compressive strength psi 4000 4000
Maximum Absorption lbs./cu. ft. 10 10
Nominal Dimensions inches (l x w x h) 21.5 x 21.5 x 4 21.5 x 21.5 x 6
Net Coverage per Block sq. ft. 3.21 3.21
Total Block Weight lbs. 111 164
Unit Block Weight lbs./sq. ft. 35 50.5
Open Area (nominal) percent 21.5 21.5
Critical Shear Stress psf 18 24.8
Velocity Limit ft/sec. 23.3 23.3
You don’t need cablesand you don’t need a crane!
Typical Channel Section (W/4” Drainage Layer)
Typical Channel Section (W/No Drainage Layer)
ENVIROFLEX®
Filter Fabric ChannelBottom
Direction Of Flow (TYP)
ENVIROFLEX®
Filter Fabric
CrushedDrain Rock
ChannelBottom
Direction Of Flow (TYP)
4”
6
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(800) 346-7995www.so i l re tent ion .com