The primary purpose of earthquake retrofitting is to keep your home from being displaced from its concrete foundation — making the building safer and less prone to major structural damage during an earthquake. Existing homes need to be retrofitted because our understanding of the effects of earthquakes as well as construction techniques have improved after the homes were built.
Foundation bolting typically means that bolts are added to improve the connections between the wooden framing members of a building and its concrete foundation. Usually this means adding bolts through the piece of wood that lies flat on top of the foundation, referred to as the sill or mudsill, into the concrete. There may be no existing bolts, or the existing bolts may be either weakened or too far apart to be strong enough for earthquake resistance.
Cracks in foundations are very common. Mostly they are nonstructural and cosmetic in nature. However, foundation cracks that are greater than 1/4-inch wide are considered to be structural cracks worthy of repair. These cracks may be indicating significant foundation settlement or the presence of expansive soils. Foundation cracks that are wider at the bottom than the top indicate soil settling. Cracks that are wider at the top than at the bottom indicate expansive soils. Foundation cracks can also lead to wet crawl spaces or water intrusion into basements and pest infestations. There are various solutions for the different types of foundation cracks and problems.
As retrofitting is a science, house leveling is an art. Many homeowners live with sloping floors, doors that won’t open and cracking walls. Most floors can be leveled and returned to their original position. This work can be completed in a structurally sound manner, making yours a safer home.
This was my first major remodel, and things went extremely smoothly. Nothing seemed to faze your crew. When an outside contractor provided a vanity at the wrong size, you, saved the day by making cutouts to work around it. you said your mission was to provide the bathroom of our dreams, and that's exactly what you did.- Michael N.