Farhad Salehi Rad - M.Sc of civil engineering, Behinehsazan Paydar Beton Azar constructional company, Tabriz, Iran.
Peyman Ghasemi - M.Sc student of civil engineering .Bushehr Branch, Islamic Azad University , Bushehr , iran
Farhad Alizadeh Afshar - Department of civil engineering ,Tabriz Branch, Islamic Azad University , Tabriz , iran

Analytical procedures for estimating the plastic moments of intermediate HBEs under equal an unequal top and bottom tension fields of SPSWs have been developed in this paper. Those proceduresare based on classic plastic analysis and rely on calculation of the reduced axial yield strength of HBEweb accounting for the presence of shear and vertical stresses. For finite element checking, the selected beams in plastic analysis , is modeled in ABAQUS software. Results from plastic analysiswere shown to agree well with the results from finite element analysis. Implementation of thedeveloped analytical procedure is necessary to achieve capacity design of HBE-to-VBE connections, which ensures desirable performance of HBEs like weak beam and strong column theory , that is mentioned in most building codes

Steel Plate Shear Walls(SPSW),Horizontal Boundary Elements(HBE), Plastic Moments,,Von-Mises yield criterion, ABAQUS software