NON-DUCTILE REINFORCED CONCRETE BUILDINGS & SEISMIC RETROFITS
Long identified by the structural engineering community as a vulnerable class of building structure, non-ductile reinforced concrete (NDC) buildings, typically constructed prior to ~1978, have historically performed poorly when subjected to strong earthquake ground shaking. Recognizing their potential threat to public safety, several proactive California building jurisdictions have begun identifying such buildings for future seismic risk evaluation and mandatory seismic retrofit. We have evaluated and developed seismic upgrade programs for numerous NDC buildings throughout the western United States including historical, commercial, residential & hospitality buildings as well as parking garages. Our philosophy has always been to find cost-effective solutions to meet our Client’s seismic risk management goals while recognizing that continued building occupancy is often a necessity. Use of Lightweight Carbon Fiberwrapping has proven to be very cost effective in providing flexural & shear strength enhancement. Conventional reinforced concrete and shotcrete wall and column augmentation has also proven satisfactory in seismically retrofitting NDC buildings. In flexible NDC moment frame buildings, Non-Linear Fluid viscous Dampers can prove useful by absorbing and dissipation energy imparted during adverse seismic conditions.
Ansonia Apartment Building, Los Angeles, CA
Six (6) Story Apartment Building
Non-Ductile Reinforced Concrete Building, Seismic Retrofit Design, Historical Building
Former Bullocks Wilshire Department Store
Los Angeles, California
Seismic Risk Assessment and Seismic Upgrade Design
OceanAire Tower, Santa Monica, California
Thirteen (13) Story
Seismic Risk Assessment, Post-Earthquake Damage Assessment & Repair
Design and Seismic Upgrade Design
Huntley Hotel, Santa Monica, California
Seventeen (17) Story High-Rise Hotel
Post-Earthquake Damage Assessment & Repair Design
and Seismic Upgrade Design
Farmers Insurance Group Home Office
Los Angeles, California
Seven (7) Story Office Tower, ~210,750 gsf
Seismic Risk Assessment
Westwood Marketplace
Westwood, California
Three (3) Story Retail Shopping Center & Parking Garage
Wilshire Office Building
Beverly Hills, California
Six (6) Story Mixed-Use Retail & Office Building
