Rough-In Works for Engineering Systems: Wall Chases, Embedded Parts, and Penetrations (Los Angeles)

Rough-in works for engineering systems are the “invisible” phase that determines how reliable and serviceable your home will be after finishing. In Los Angeles construction and renovation, this stage typically includes cutting wall chases (often called shtroby), installing embedded parts and blockouts, and creating penetrations for plumbing, electrical, HVAC, and low-voltage lines. Wall chases are grooves made in masonry or plaster to hide conduits and pipes. The key is to follow a clear routing plan: keep lines vertical or horizontal, avoid chasing structural elements without approval, and maintain required clearances so finishes don’t crack later. For electrical, precise chase depth helps protect cables and keeps outlets perfectly aligned; for plumbing, correct slope and insulation space prevent noise and condensation. Embedded parts (закладные) are pre-installed supports and anchors inside walls, floors, or ceilings: mounting plates for cabinets, brackets for AC units, reinforcement for heavy fixtures, and backing for handrails or TV mounts. Planning these items early reduces rework and prevents weak fastening into drywall alone. Penetrations and pass-throughs (проходки) are holes through walls and slabs for pipes, ducts, and cable bundles. In Los Angeles, special attention is paid to firestopping, sealing, and moisture control—especially near kitchens, bathrooms, and exterior walls. Using sleeves, grommets, and proper sealing compounds protects materials and allows future maintenance. Best practice is to coordinate all trades, mark routes, photograph completed rough-ins, and only then close walls. Done correctly, rough-in engineering work saves time, avoids costly conflicts, and ensures your renovation performs as designed.