A fast, patchwork repair of the collapsed retaining wall at a Northwest Side neighborhood won't be enough for city officials. Any fix by builder and developer Centex Homes will have to go well beyond ...

Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 to 8 ...