Cimentación y parte subterránea
Esta etapa cubre los trabajos de excavación, preparación de la base, ejecución del hormigón armado, impermeabilización, drenaje perimetral y los pasos para las instalaciones. Típicamente requiere coordinación con el informe geotécnico, control de agua subterránea y acceso de obras. Los errores en esta fase suelen provocar problemas estructurales y obras correctivas costosas; por ello la práctica común es ejecutar inspecciones y registros de control antes de proceder a las operaciones siguientes.
Resumen de control del stage
Resumen de la etapa
Foundation risk is created early and hidden early. The cost problem is rarely the concrete itself; it is the chain reaction from incorrect geometry, poor reinforcement placement, weak waterproofing continuity, and drainage that is not truly taken away from the structure. This stage must be controlled before any backfill, screed, or vertical structure reduces visibility.
Quality gates del stage
- Freeze grid, levels, and structural geometry before concrete placement.
- Verify reinforcement layout, concrete cover, lap zones, and penetration sleeves before pour approval.
- Check that waterproofing transitions are continuous at cold joints, wall kicks, and service penetrations.
- Confirm drainage slope, outlet path, and serviceability before backfill starts.
- Do not sign off hidden foundation works without photo evidence and measured dimensions.
Checklist por work package
This package defines the structural baseline for the whole project. If geometry, cover, lap length, or embed positions drift here, every stage above inherits the error.
Qué verificar
- Check bar diameter, spacing, lap zones, and starter positions against the approved structural set.
- Measure cover blocks and confirm reinforcement is tied and stable before the pour starts.
- Confirm sleeves, anchors, and embedded items are fixed and coordinated with engineering routes.
Qué suele salir mal
- Rebar shifts during pour because cages were not tied rigidly enough.
- Sleeves are added ad hoc after steel inspection and cut through reinforcement logic.
- Concrete cover is lost at edges, corners, and penetrations.
Foundation waterproofing is not only a membrane operation. It is a continuity exercise across cold joints, wall kicks, corners, and service penetrations.
Qué verificar
- Verify substrate preparation, clean transitions, and membrane build-up at all change-of-plane locations.
- Check details at cold joints, kicker zones, and pipe entries before protection layers are installed.
- Confirm no waterproofing termination is left exposed without a protected continuation strategy.
Qué suele salir mal
- Membrane is continuous on flat areas but broken at wall-to-slab junctions.
- Penetrations are sealed cosmetically instead of with a buildable system detail.
- Protection layer damages the membrane before backfill.
Drainage only works when slope, outlet, maintenance access, and soil logic are verified as one system rather than installed as isolated pipe segments.
Qué verificar
- Confirm pipe fall, outlet level, and cleanout access before trenches are closed.
- Verify drainage route leads water away from the structure instead of redistributing it nearby.
- Check filter / wrap logic where fine material can blind the system.
Qué suele salir mal
- Drain lines look complete but terminate to nowhere or to a higher downstream level.
- Backfill contaminates the drainage envelope and reduces capacity almost immediately.
- Inspection and maintenance access is omitted.
Evidencia antes de aprobar
- Survey confirmation of axes, levels, and founding depth before pour.
- Photo set of reinforcement, sleeves, laps, concrete cover spacers, and formwork condition.
- Waterproofing and drainage records before backfill, including outlet route and test notes.
Glosario relacionado
Base estructural que transmite cargas al terreno.
Elementos de acero que mejoran la tracción del hormigón.
Sistemas barrera para evitar ingreso de agua.
Gestión del agua superficial alrededor del edificio.
Clase de resistencia a compresión especificada.
Categoría geotécnica usada para factores de diseño.
Traslado de ejes y geometría del proyecto al terreno.
Punto de referencia protegido para cotas y control posicional.
Úselo con el resto del producto
Cambie entre stage guide, checklist y coste de errores. El mismo work package debe contar una historia coherente en las tres vistas.