Rough-In Works for Engineering Systems: Wall Chases, Embedded Parts, and Penetrations

Rough-in works for engineering systems are the foundation of a reliable renovation. Before finishing materials go on, the space must be prepared for electrical, plumbing, HVAC, low-current networks, and fire safety lines. This stage typically includes wall chases (often called “shtrobes”), embedded parts (закладные), and penetrations (проходки). Done correctly, it prevents rework, protects structures, and keeps future maintenance predictable. Wall chases are grooves cut into brick, block, or plaster to hide conduits, cables, or small-diameter pipes. The key is precision: the chase route must follow the project layout, avoid load-bearing risks, and keep safe distances from corners, openings, and reinforcement. Excessive depth or random diagonal cuts can weaken walls, so a clear plan and marking are essential. Embedded parts are pre-installed elements that will later receive equipment or fasteners: mounting plates for boilers and manifolds, anchors for radiators, brackets for air-handling units, frames for concealed mixers, or bases for electrical panels. Installing these “in advance” ensures correct alignment, load capacity, and clean finishing without improvisation. Penetrations are openings through walls, floors, and ceilings for pipes, ducts, and cable trays. Quality penetrations include sleeves, insulation, and proper sealing—especially in wet zones and fire-rated assemblies. Firestopping materials, airtight membranes, and vibration isolation can be required depending on the system. In Fontana projects, the best practice is to coordinate all trades early, verify measurements on site, and document every route before closing surfaces. A thorough rough-in inspection—photos, as-built notes, and pressure/continuity checks—turns this hidden work into long-term comfort and safety.