Seismic Retrofitting Photo Album: Seismic Retrofitting & Foundation Reinforcement in Woodland Hills, CA
This gallery showcases a seismic retrofitting project performed on a residential home in Woodland Hills, California. The photos document the condition of the foundation before repairs, the visible cracking and structural weaknesses, and the installation of Simpson Strong-Tie steel reinforcement plates to stabilize and strengthen the concrete stem wall against seismic activity. This retrofit enhances earthquake resistance and ensures long-term structural safety.
Cracked Foundation Around Pipe Prior to Retrofitting
Damage concentrated around a pipe penetration shows cracking and displacement in the foundation wall. This area was structurally reinforced during the seismic retrofit to prevent future movement.
Foundation Crack Near Plumbing Line in Woodland Hills Home
Visible cracking and surface separation appear near a plumbing penetration in the concrete foundation. This damage highlights early signs of stress caused by seismic movement or soil shifting, requiring professional structural reinforcement.
Foundation Crack at Base of Stem Wall Prior to Seismic Repair
A close-up view of a deep vertical crack forming along the base of a concrete stem wall. Soil displacement and structural pressure have caused separation, indicating the need for stabilization through Simpson Strong-Tie steel reinforcements.
Steel Anchor Plate Installed for Seismic Reinforcement
A steel anchor plate is secured to the stem wall with heavy-duty bolts, forming part of the home's seismic reinforcement system. These plates redistribute stress and prevent wall separation during an earthquake.
Crack Inspection Before Seismic Retrofitting in Woodland Hills
A clear look at a large structural crack running through a concrete wall. Before retrofitting, the crew inspects and assesses damage to determine reinforcement placement for improved earthquake protection.
Angled View of Foundation Crack Before Seismic Repair
Diagonal cracking visible along the stem wall reveals strain in the structure. The repair plan includes installing Simpson Strong-Tie components to restore wall integrity and resist lateral seismic forces.
Completed Seismic Retrofit with Simpson Strong-Tie Plates
Final view of the retrofitted stem wall featuring properly installed Simpson Strong-Tie plates. The system secures the foundation, improving its ability to withstand seismic shaking and structural stress.
Simpson Strong-Tie Installation During Seismic Retrofit
Two Simpson Strong-Tie HST2 plates are bolted across the crack line, reinforcing the weakened section of the concrete stem wall. This hardware enhances shear strength and provides long-term stability.