b'Graph 2. Estimating Pier Spacing Based Upon Foundation Strength of Spread Footingor Monolithic Slab Only (No Stem Wall or Hollow Masonry Stem Walls)18"Height of Reinforced Footing Only (No Stemwall or Masonry Stem Wall) 2,500 lb/ft16"Earth Contact Products14"2,000 lb/ft12"1,500 lb/ft10"8" 1,000 lb/ftFOOTING6" Structural Weight Per Lineal Foot HEIGHT 2 - #4 REBARSAlong The Footing Perimeter (lb/ft) (GR-60)3 4 5 6 7 8PIER SPACING - feet24"4,000 lb/ft 3,000 lb/ft3,500 lb/ft2,500 lb/ft22"2,000 lb/ftBEAM 4 - #5 REBARSHEIGHT(GR-60)20"Height of Steel Reinforced 2,500 lb/ft 2,000 lb/ftStructural weight per lineal footMonolithic Footing18" along the footing perimeter (lb/ft)3 4 5 6 7 818"3,000 lb/ft 1,200 lb/ft1,500 lb/ft 1,000 lb/ft16" BEAMHEIGHT14"4 - #4 REBARS12" (GR-60)3 4 5 6 7 8PIER SPACING - feetImportant Note:Building techniques and Building Codes vary across the country; the graphs presented here are tobeusedonlyasageneralguideforspacingrequirements,forpreliminarydesigns,andforestimation purposes.It is recommended that a registered professional engineer conduct the finaldesign and supervise the installation.ECP Steel Piers - Technical Design Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 6 - Page 123 All rights reserved'