Report # 54 : Large concrete block walls with reinforced concrete floors and roof (typical series: 1-306c, 1-307c, 114c)

by Mark Klyachko, Yuriy Gordeev, Freda Kolosova

This is a typical residential construction found both in urban and rural areas. It represents a construction practice followed in the former Soviet Union. Buildings of this type constitute 15 to 30% of the housing stock in earthquake-prone areas of Russia (Far East, Siberia, Baikal Lake Region, North Caucasus) and CIS states (Central Asia, Armenia, Georgia, etc.). The main load bearing system for lateral and gravity loads consists of concrete block masonry walls and concrete floor slabs. Seismic resistance is relatively good, provided that the welded block wall connections are present and are well constructed.