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SLB – Concrete Floor Design

Trusted by engineers for 30 years. Proven on more than 300,000 constructed designs. SLB designs reinforced concrete slabs of any shape, flat plates with bi-axial bending, plate shear, irregular shapes with beams and openings.

Fast – Reliably – Efficiently

ACI 318, CSA A23.3, AS 3600

“…Got a technical question? Chances are we’ve answered it before….”

Two-Way Action

True finite-element plate analysis without strip or grid-beam approximations. SLB captures two-way bending, shear and twisting using thick-plate (Mindlin–Reissner) elements, without load-path assumptions or rectangular grids. Trusted in design practice for over 30 years, from garage roofs to shopping mall floors.

Long-Term Deflections

Serviceability often governs slab thickness. SLB calculates long-term deflections, including the effects of creep and shrinkage, using your choice of method: ACI λΔ, Gilbert, Branson (ACI 435), RSM, Eurocode 2 or Kcs (AS 3600). You see how the slab will actually deflect over time, not just a span-to-depth check.

Slab Reinforcement Design

SLB designs the top and bottom steel over the whole slab, in both orthogonal directions, and shows the required areas as clear contour plots. You can then specify the actual bars, check how efficient the layout is and get the steel rate for the floor. Design is to ACI 318, CSA A23.3 and AS 3600.

Beam & Band Beam Design

Beams and band beams can run in any direction and are part of the same 3D floor model, so they share load with the slab naturally. SLB designs every section along each beam for bending and shear and produces a full design report. The reinforcement can then be modified and re-checked.

CAD & Revit Import / Integrated Workflow

Direct import of individual floors from CAD or Revit, plus automatic data-sharing across INDUCTA’s other modules (RCB, PTD), fit well in the existing BIM workflows, rather than a bolt-on tool.

Punching Shear Check and Design

Punching shear failures are a major liability concern, and it’s a common source of manual-calc errors. SLB provides a reliable and comprehensive solution with automatic perimeter detection plus design of extra shear reinforcement.

Slab-on-Ground

Winkler springs or full elastic-half-space soil–structure interaction soil models. A special tool for you is worth keeping in your back pocket. Slab-on-grade is extremely common, and with SLB, it is extremely easy to use. Whether it is low-rise or industrial construction, it could easily be used in the same slab model.

Frequency & Forced Vibration Analysis

SLB can be used to analyse vibration-sensitive floors, such as hospitals, labs, floors with rotating machinery. SLB integrates natural frequencies extraction and forced-vibration analysis in the same model. No need for a separate floor vibration tool. Static and dynamic analysis in the same model, is a real workflow win.

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Productivity and Workflow

  • INDUCTA Modelling Concept – Any shape or orientation, no working grid or beam strips (More…)
  • Automatic Mesh Generation – Auto FE mesh over the entire floor, without manual subdivision
  • Automatic Import / Export – Fully integrated with RCB building software (More…)
  • Annotation – Add short notes to any results display, pointing to an area of interest
  • Reports – Full results in Word, Excel or Text
  • 3D Viewer – Free-standing viewer for clients, architects and builders

Two-Way Action

SLB is INDUCTA’s finite-element software for modelling and reinforcement steel design of suspended reinforced concrete slabs and slabs-on-ground of any shape, automatically accounting for two-way action.

True finite-element plate analysis without strip or grid-beam approximations. SLB captures two-way bending, shear and twisting using thick-plate (Mindlin–Reissner) elements, without load-path assumptions or rectangular grids. Trusted in design practice for over 30 years, from garage roofs to shopping mall floors.

Building on 30 years of experience with its predecessor SLABS, SLB combines proven engineering methods with fast, efficient modelling. Models can be imported from CAD, REVIT or other INDUCTA programs.

SLB provides comprehensive reinforcement design for strength, crack control, shrinkage and temperature, with accurate steel quantities.

Long-Term Deflections

Serviceability often governs slab thickness. SLB calculates long-term deflections, including the effects of creep and shrinkage, using your choice of method: ACI λΔ, Gilbert, Branson (ACI 435), RSM, Eurocode 2 or Kcs (AS 3600). You see how the slab will actually deflect over time, not just a span-to-depth check.

Slab Reinforcement Design

SLB designs the top and bottom steel over the whole slab, in both orthogonal directions, and shows the required areas as clear contour plots. You can then specify the actual bars, check how efficient the layout is and get the steel rate for the floor. Design is to ACI 318, CSA A23.3 and AS 3600.

Beam & Band Beam Design

Beams and band beams can run in any direction within the same 3D floor model, allowing natural load sharing with the slab. SLB designs each beam section for bending and shear, generates a comprehensive design report, and allows reinforcement to be modified and re-checked.

CAD, Revit, or BMP Import / Integrated Workflow

Import floor geometry from Revit, CAD or BMP images for fast, efficient modelling.

Direct import of individual floors from CAD or Revit, plus automatic data-sharing across INDUCTA’s other modules (RCB, PTD), fit well in the existing BIM workflows, rather than a bolt-on tool.

Punching Shear Check and Design

Punching shear failures are a major liability concern, and it’s a common source of manual-calc errors. SLB provides a reliable and comprehensive solution with automatic perimeter detection plus design of extra shear reinforcement.

Slab-on-Ground

Winkler springs or full elastic-half-space soil–structure interaction soil models. A special tool for you is worth keeping in your back pocket. Slab-on-grade is extremely common, and with SLB, it is extremely easy to use. Whether it is low-rise or industrial construction, it could easily be used in the same slab model.

Frequency & Forced Vibration Analysis

SLB can be used to analyse vibration-sensitive floors, such as hospitals, labs, floors with rotating machinery. SLB integrates natural frequencies extraction and forced-vibration analysis in the same model. No need for a separate floor vibration tool. Static and dynamic analysis in the same model, is a real workflow win.