Concrete members subjected to bending moments undergo a transition from an uncracked state to a cracked state.
Chunks of concrete breaking away; visible orange/brown stains. (Critical) Advanced rebar corrosion; moisture ingress. Step-by-Step Repair and Remediation
Structural engineering is a heavily regulated profession. Engineers are legally responsible for the safety of the structures they design.
To control cracking in real concrete beams, BEAMD calculates the maximum allowable bar spacing and provides detailed reinforcement layouts that keep crack widths within safe, acceptable limits (usually 0.3mm for standard environments). atir strap and beamd with crack
When moisture, oxygen, and carbon dioxide penetrate porous concrete, they cause the internal steel reinforcement bars (rebar) to rust. As steel corrodes, it expands up to 600% of its original volume. This internal expansion exerts immense outward pressure, cracking and eventually spalling (breaking off) the surrounding concrete. Diagnosing Crack Severity
, here is a breakdown of what those terms actually refer to in a professional context: 1. Structural Analysis with STRAP
This guide is for educational and informational purposes only. Any repair of structural cracks should be supervised by a licensed Structural Engineer. Improper installation of repair straps can lead to further damage or structural collapse. Concrete members subjected to bending moments undergo a
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If the building’s foundation or the specific landing pad supporting the bottom of the staircase settles unevenly, it shifts the intended load path. This movement introduces unexpected torsional (twisting) and shear forces into the stair strap, causing deep, diagonal structural cracks. 4. Corrosion of Internal Rebar
The primary module calculates linear elastic reactions using the gross cross-section properties. To accurately model cracked beams or slabs, engineers must apply specific reduction factors or run targeted post-processors. Mechanical Property Modifiers To simulate cracking directly within the structural solver: Navigate to the property definition panel. When moisture, oxygen, and carbon dioxide penetrate porous
Do assume every crack is dangerous, but inspect systematically.
Ensure STRAP models include precise soil-structure interaction.
These are vertical cracks that usually appear in the middle of a beam where the bending stress is highest. Repair Methods: Common professional repairs include epoxy injection for concrete or using resin and hidden plates for wooden support beams. Assessment:
If STRAP is the analytical brain, BEAMD is the hand that draws and perfects the masterpiece. BEAMD is a specialized, fully-integrated module for the detailed design, detailing, drafting, and scheduling of RC beams. After STRAP calculates the required reinforcement to resist loads and control cracking, BEAMD takes over and creates all the necessary documentation: