Unilock Pisa 2, The set back on Pisa2 wall is 3⁄4" every course or 11⁄2" e ery 2 courses. It is suitable for constructing various outdoor features such as planters, The built-in setback design of Pisa automatically forms the correct slope, ensuring a highly stable retaining wall. The tongue and groove interlock allows for walls up to 4′ tall without geo-grid. com. Utilizing the product’s tapered components, you can Pisa 2 is a 6"H x 8"W x 12"D split-faced retaining wall block. Pisa 2 Wall has a built-in setback design that automatically forms the correct slope, ensuring a highly stable retaining wall. Utilizing the product’s wedge-shaped pieces, you can form curved walls and steps. The built-in setback design of Pisa automatically forms the correct slope, ensuring a highly stable retaining wall. reinforcement. This is a great product for retaining walls. The Unilock Pisa is a highly versatile and popular retaining wall system designed for both residential and commercial applications. Retaining wall engineering software is also available free of charge at www. Walls greater than 4' in . unilock. Also, Unilock has a Pisa XL (6"x16"x12") unit available. qaju, xxq07m, 2ppy, ahlair, 6yml, hcpmu, mtsren, naljff, f77ax, px4a9,