NOW HIRING! Click Here to Apply! Connect with Us! CONCRETE BLOCK Preferred Materials manufactures concrete block to be used in masonry-style construction. These blocks can be made with normal weight or light weight aggregates and are formed in many shapes and sizes. When reinforced with concrete columns and tie beams, load bearing walls created from these block are used to build all types of structures, both commercial and residential. Click Here to request a quote. For additional information, view this PDF with visual representation of columns and pilaster block units; 4″, 6″, 8″, 10″, 12″ wide block units; and round block units. FIRE RATED BLOCK ASSEMBLIES 1 Hour 4-1-910275 1Hr Fire Rated Assembly 4-1-910285 1Hr Fire Rated Assembly 6-1-910350 1Hr Fire Rated Assembly 8-1-910635 1Hr Fire Rated Assembly 8-1-910700 1Hr Fire Rated Assembly 10-1-910005 1Hr Fire Rated Assembly 12-1-910110 1Hr Fire Rated Assembly 1 - 1.5 Hours 4-1.5-910275D 1.5Hr Fire Rated Assembly 4-1.5-910275GF 1.5Hr Fire Rated Assembly 4-1.5-910275S 1.5Hr Fire Rated Assembly 4-1.5-910285 1.5Hr Fire Rated Assembly 6-1.5-910350D 1.5Hr Fire Rated Assembly 6-1.5-910350S 1.5Hr Fire Rated Assembly 8-1.5-910635 1.5Hr Fire Rated Assembly 2 Hours 4-2-910275D2 2Hr Fire Rated Assembly 4-2-910275GFD 2Hr Fire Rated Assembly 4-2-910275GFS 2Hr Fire Rated Assembly 4-2-910275SD 2Hr Fire Rated Assembly 4-2-910285BLW 2Hr Fire Rated Assembly 4-2-910285D 2Hr Fire Rated Assembly 4-2-910285LW 2Hr Fire Rated Assembly 4-2-910285S 2Hr Fire Rated Assembly 6-2-910330 2Hr Fire Rated Assembly 6-2-910350D2 2Hr Fire Rated Assembly 6-2-910350GF 2Hr Fire Rated Assembly 6-2-910350S2 2Hr Fire Rated Assembly 6-2-910350SD 2Hr Fire Rated Assembly 8-2-910505 2Hr Fire Rated Assembly 8-2-910635D2 2Hr Fire Rated Assembly 8-2-910635D 2Hr Fire Rated Assembly 8-2-910635GF 2Hr Fire Rated Assembly 8-2-910655 2Hr Fire Rated Assembly 8-2-910700 2Hr Fire Rated Assembly 8-2-910720 2Hr Fire Rated Assembly 10-2-910005 2Hr Fire Rated Assembly 12-2-910110 2Hr Fire Rated Assembly 3 Hours 6-3-910330D2 3Hr Fire Rated Assembly 6-3-910330GF 3Hr Fire Rated Assembly 6-3-910330S2 3Hr Fire Rated Assembly 6-3-910330SD 3Hr Fire Rated Assembly 6-3-910350GF 3Hr Fire Rated Assembly 8-3-910505D2 3Hr Fire Rated Assembly 8-3-910505GF 3Hr Fire Rated Assembly 8-3-910505S2 3Hr Fire Rated Assembly 8-3-910505SD 3Hr Fire Rated Assembly 8-3-910635D2 3Hr Fire Rated Assembly 8-3-910635GF 3Hr Fire Rated Assembly 8-3-910655D2 3Hr Fire Rated Assembly 8-3-910655GF 3Hr Fire Rated Assembly 8-3-910655S2 3Hr Fire Rated Assembly 8-3-910655SD 3Hr Fire Rated Assembly 8-3-910700D2 3Hr Fire Rated Assembly 8-3-910700GF 3Hr Fire Rated Assembly 8-3-910700S2 3Hr Fire Rated Assembly 8-3-910700SD 3Hr Fire Rated Assembly 8-3-910720D2 3Hr Fire Rated Assembly 8-3-910720GF 3Hr Fire Rated Assembly 8-3-910720S2 3Hr Fire Rated Assembly 8-3-910720SD 3Hr Fire Rated Assembly 10-3-910005D 3Hr Fire Rated Assembly 10-3-910005GF 3Hr Fire Rated Assembly 10-3-910005S 3Hr Fire Rated Assembly 12-3-910110 3Hr Fire Rated Assembly 12-3-910110GF 3Hr Fire Rated Assembly 4 Hours 6-4-910330GFD 4Hr Fire Rated Assembly 6-4-910330GFS 4Hr Fire Rated Assembly 6-4-910350GFD 4Hr Fire Rated Assembly 6-4-910350GFS 4Hr Fire Rated Assembly 8-4-910505GF 4Hr Fire Rated Assembly 8-4-910635GF 4Hr Fire Rated Assembly 8-4-910655GF 4Hr Fire Rated Assembly 8-4-910700GF 4Hr Fire Rated Assembly 8-4-910720GF 4Hr Fire Rated Assembly 10-4-910005D2 4Hr Fire Rated Assembly 10-4-910005GF 4Hr Fire Rated Assembly 10-4-910005S2 4Hr Fire Rated Assembly 10-4-910005SD 4Hr Fire Rated Assembly 12-4-910065 4Hr Fire Rated Assembly 12-4-910110D2 4Hr Fire Rated Assembly 12-4-910110GF 4Hr Fire Rated Assembly 12-4-910110S2 4Hr Fire Rated Assembly 12-4-910110SD 4Hr Fire Rated Assembly TECHNICAL REFERNECES SPECIFICATIONS Concrete block designs are based upon various ASTM guidelines. C-55 – C-94 – C-331 – C-129 – C-140 – C-488 Copyright © 2021 Preferred Materials - All Rights Reserved. Powered by GoDaddy Website Builder HOMELOCATIONSPROJECT PROFILES JOIN OUR TEAM! Check out our available positions today. APPLY ONLINE