Illinois Society of Architects · Chicago · leaf 522
duce tlie strengthmore than the maximum allowable knot. 75. No pieces of exceptionally lightweight shall be permitted in any grade, ex-cept that very light pieces otherwise ofSelect grade may be accepted in the Com-mon grade. 76. No heartwood requirements are pro-vided in these grades. Heartwood… … Directors Room All)ert Iieli & Co. REUTER MT^G CO. Hi^h Class Architectural Woodwork Office and Factory 1722-28 Armitage Ave. CHICAGO, ILL. Phone Brunswick 4.^,^.^ 77. Methods of measurement of Douglasfir and southern pine for rate of growth anddensity are given for use with the DenseSelect and…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
