Classification opinions
… panel, or of a sheet of plaster, etc., the space between the two surfaces being filled with insulating … E-section margining, supporting bars of a thickness ranging between 2 and 5 mm and a width of 20 to 50 mm, and … Adoption : 1967 … 7. Octagonal steel columns , measuring between 4 and 9 metres, presented unassembled with the …