STATEMENT OF THE PROBLEM OF DETERMINING THE TECHNICAL APPEARANCE AND DESIGN CHARACTERISTICS OF MULTI-APARTMENT RESIDENTIAL BUILDINGS BASED ON THE EXPERT SYSTEMS METHOD Article Merkulov A.A., Razoumny Y.N., Saltykova O.A., Stepanyan I.V. RUDN Journal of Engineering Researches. РУДН. Vol. 25. 2024. P. 319-329