Description

This verification example utilizes Tekla Tedds to check a slab on ground with a lift truck loading assigned a specific design index utilizing the Corps of Engineer’s (COE) method. This example is based on Design Example A3.3 of the ACI 360R-10 Guide to Design of Slabs-on-Ground (page 63). Comparisons and contrasts are tabularized and discussed regarding the results from Tedds and the ACI Design Example. The Tedds file used in this example is provided in the Tedds “Select Calculation” window, under Verification Examples.

Problem statement

Determine the slab thickness due to loading from a lift truck.

References

ACI 360R-10 Guide to Design of Slabs-on-Ground

Example information

Loading: Axle load = 25,000 lb

Vehicle passes = 100,000

Concrete flexural strength = 500 psi

Subgrade modulus, k = 300 lb/in³

Notes

• Both Tedds and the ACI design example utilize the COE design chart found in ACI 360R-10 (Figure A3.2)

Conclusion

Upon reviewing the results above, the determination of slab on ground thickness due to lift truck loading following the COE method by Tekla Tedds matches ACI 360R-10 design example A3.3. Differences between Tedds and the example can be attributed to rounding of values in the ACI design example.