GOST 20022.2-80 Protection of wood. Classification

THE USSR STATE STANDARD SECURITY CLASSIFICATION OF WOOD GOST 20022.2-80 USSR STATE COMMITTEE ON STANDARDS DEVELOPED Moscow by the Ministry of Forestry and Woodworking Industry of the USSR ARTISTS SN Gorshin, Dr. Sc. Science; Rymina LV, Cand. Tekhn. INTRODUCED by the Ministry of Science Forestry and Woodworking Industry of the USSR Deputy. Minister VM Ventslavsky approved and put into effect by Decision of the USSR State Committee on Standards of the September 12, 1980 № 4687 Decision of the USSR State Committee on Standards of the September 12, 1980 № 4687 deadline for implementing the set with 01.07.1981, the present standard establishes a classification of timber by: resistance to rot and water permeability protective equipment; speed raskonservirovaniya and the vulnerability of the defense; classification of protective equipment timber. 1. CLASSIFICATION OF WOOD resistant to rotting and water permeability 1.1. Resistant to rotting wood species are subdivided into classes specified in Table. 1. Table 1 Class Breed wood core Resistant sapwood of Scots pine, ash, Siberian pine (cedar), larch, Scots pine, oak, ash Srednestoykie spruce, Siberian pine (cedar), larch, fir, spruce, fir, beech Malostoykie birch, beech, elm, hornbeam, oak, maple, elm, maple No resistance linden, alder, aspen birch, basswood, aspen, alder 1.2. On water permeability protective equipment woods are divided into groups, given in Table. 2. Table 2 Group Breed sap wood core 1 - legkopropityvaemye Scots pine, birch, beech - 2 - moderate soaking Siberian pine (cedar), European larch, hornbeam, oak, maple, linden, alder, aspen Siberian pine (cedar), Scots pine, aspen, alder, 3 - difficult soaking spruce, Siberian larch, fir, spruce, European larch, Siberian larch, fir, birch, oak, elm, beech, ash, 2. CLASSIFICATION OF OBJECTS PROTECTED BY RATE AND VULNERABILITY RASKONSERVIROVANIYA 2.1. The speed of raskonservirovaniya and the vulnerability of protection are divided into classes of conditions of service specified in the Table. 3. Table 3 The class of conditions of service Washout