Concrete floor slabs on grade are often subject to heavy loads in buildings such as wall loads, live loads and moving loads. A common example of moving loads in buildings is a forklift axle load used in buildings such as warehouses. Concrete floor slabs on grade supporting such loads have to be designed so that cracking, settlement and stresses are minimized.
During the design process for heavy duty concrete slabs several variables have to be considered such as floor slab loads, subgrade conditions, steel reinforcement requirements, joint types, environmental conditions, and much more. This course will provide the student with the knowledge to analyze to design Concrete Floor Slabs on Grade Subjected to Heavy Loads. Design examples are shown to aid in understanding the course material.
The study materials for this course are based solely on the text “Concrete Floor Slabs on Grade Subjected to Heavy Loads” as published by the Departments of the Army, and the Air Force as part of the Unified Facilities Criteria (UFC).
The student must take a multiple-choice quiz consisting of twenty (20) questions at the end of this course to obtain PDH credits.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- How to define both light and heavy loads
- The effects of using dowels at contraction joints
- How reinforcing steel effects the strength of concrete
- How to determine the general suitability of subgrade soil
- How to determine the modulus of subgrade reaction (k) for various soils
- How to determine the minimum dowel length for concrete slabs
- How to determine the thickness of thickened slabs
- The recommended spacing of contraction joints
- The advantages of using tie bars at keyed joints
- How to use various types of joints to control cracking, faulting, and shear stresses
Click on the following link to the PDF document to review the course material before taking the quiz for credit.
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