Section 27-866. Corbelling of chimneys

Latest version.

Walls less than twelve inches thick
  shall not be corbelled. The maximum horizontal projection in any  corbel
  shall  be one inch for each two inches of vertical projection and in all
  cases the total projection shall not be greater than  one-third  of  the
  minimum  thickness  of  the  wall  to be corbelled. In no case shall the
  total projection be more than six inches. No masonry  chimney  shall  be
  corbelled from hollow or cavity wall masonry units.

                    
                        var val = document.getElementById('citecontent').innerHTML;
                        art.dialog.defaults.title = window.location.href;
                        art.dialog.data('cite', val);
                        art.dialog.data('homeDemoPath', '/Scripts/plus/artDialog/');
                        art.dialog.open('/Scripts/plus/artDialog/citeiframe.html');