Illinois Society of Architects · Chicago · leaf 502
hall be considered common lumber. 13. Two general classes shall be Iecog-nized. The first shall be suitable for use asa whole for purposes in which surface co\--ering or strength is required. Defects andlilemishes permitted in this class must besound. The second class permits verycoarse defects… … 14. Total products of atypical log ar-ranged in series^according to qual-ity as determinedby appearance. Summary of Basic G-rade Classification for Yard Iitimber. Suitable for na-1 ;;rade A—Practically free from defects. tural finishes. I G/ade B—Allows a few small defects or blemishes.[ Grade…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
