Our Retaining Walls Extensions are available in 2' and 4' wall height to extend the length of your ByBlock retaining wall? Start with our 20' product and add these 10' extension assemblies until you achieve your desired length. These assemblies can only be purchased as an add-on to our ByBlock Perimeter Wall products. ByBlock Retaining Walls can retain up to 6,000 lbf while maintaining less than 0.7" of deflection. If you are uncertain if this is appropriate for your project, please consult with a structural engineer prior to purchase. Please note that the block height is taken from the top of your concrete footer to the surface of the top plate. There is no consideration of below grade block installation. For projects requiring a below-grade concrete footing please contact us. Available for pick up in Gardena, CA. Ships LTL across the US. Lead time 4-6 weeks. KIT INCLUDES: All required ByBlock (General Construction Grade). Hardware bundle includes hardware and fastener pack. Galvanized with epoxy for J-bolt anchors. NOTE: J-bolt are to be installed into the concrete footer during pour at specified locations. 10" J-bolt is 5" into concrete and 5" above Assembly instructions including ByBlock installation process and respective anchoring methods. They are not to be considered approved plans/drawings. Consult with a local structural engineer for slab requirements, soils, wind loads, wall height restrictions, etc. Contact us with questions. ENVIRONMENTAL IMPACT: Landfill Diversion: 2' Wall Height (10'): 0.26 tons 4' Wall Height (10'): 0.54 tons CO2 Avoidance: 2' Wall Height: 0.58 tons 4' Wall Height: 1.19 tons NOMINAL DIMENSIONS: Exterior Dimensions: Wall Heights (include 3" for lumber top plates and post-tension): 2' = 2' 3-3/4" 4' = 4' 2-1/2"
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