Inorganic bearing surface material and bearing wall

Abstract

Provided is an inorganic load-bearing board in which the ultimate strength correction value is increased to the extent possible by increasing the plasticity, and thus the co-efficient of effective wall length can be increased; and a load-bearing wall including this inorganic load-bearing board. An inorganic load-bearing board 50, in which a board width in a front view of the load-bearing board 50 is less than 910 mm. Preferably, a load-bearing strength value applied for calculation of a co-efficient of effective wall length of the load-bearing board is determined by an ultimate strength correction value obtained by correcting an ultimate strength of the load-bearing board based on plasticity, among four types of load-bearing strength values below: (1) yield strength Py; (2) ultimate strength correction value Pu′, obtained by correcting ultimate strength Pu based on plasticity μ (where μ=δu/δv, and δu is an ultimate displacement and δv is a yield point displacement); (3) ⅔ of maximum load-bearing strength Pmax; and (4) a load-bearing strength at an apparent shear deformation angle of 1/120 rad or a load-bearing strength at a true shear deformation angle of 1/300 rad.

Dependencies are inferred from the claim text.