The minimum concrete cover for slabs usually ranges between 20 mm and 30 mm, depending on exposure class. Eurocode allows 20 mm for internal dry environments (XC1), while 30 mm or more is required for external or aggressive exposures like XC3–XC4 or XD classes. According to ACI 318, 20 mm (3/4") is used for interior concrete, and 40 mm (1.5") for concrete exposed to weather or ground. To maintain correct cover, use non-corrosive plastic spacers placed at regular intervals, typically around 1.0 m. These support the reinforcement during casting and curing. Steel spacers are not recommended due to corrosion risks that can reduce durability.
Reinforcement Detailing Standards
This section provides reinforcement detailing standards in the form of downloadable CAD drawings. All drawings follow international codes such as ACI 318 and Eurocode 2, and are designed to ensure structural compliance across all reinforced concrete elements.
Available Detailing Topics
- Minimum concrete cover
- Bar spacing and layering rules
- Lap splices and bar anchorage
- Standard hook dimensions and bar shapes
- Rebar support and spacer placement
Each CAD file is available in DWG and PDF format and can be applied across slabs, beams, columns, and walls. Use these files to ensure accuracy and code compliance in all reinforced concrete detailing work.
