1592953106000 1312632483000 term-32778 1616540939308 1312632524000 1615829353865 adlib fitz-online adlib-term-32778 868cd728-37d6-37ae-aada-da5866d73392 3 1 scope note Masonry units whose net corss-sectioned area in any plane parallel to the bearing surface is less than 75% of its gross cross-sectional area measured in the same plane. PCMC M.MT.AFU.ARI.CLM.CXA.ALO.ARI 1 code M.MT.AFU.ARI.CLM.CXA.ALO.ARI 1 hollow masonry units reference term-32781 adlib-term-32781 a37c56d0-05e7-306f-9ec3-364029eb78e9 masonry units hollow masonry units term