The American Industrial Hygiene Association (AIHA)

EIH II Practical Applications of OEHS Math Course


This self-study course is a comprehensive course intended for IHs and other OEHS professionals. The course follows the book Useful Equations which covers topics such as: calculation and estimation approaches related to airborne contaminants, TLV and TWA, OA for dilution, fans, system testing, sound and noise, radiation, ventilation, statistics, ventilation, IAQ and more. The course workbook will illustrate how to apply 150 equations to the real world of industrial hygiene and OH&S. Each section presents practical applications, short case studies, and sample calculations, both manually and using the IVE AutoCalc Spreadsheet programs.

Course Outline

Section 1- Introduction, General Math Review, General Sciences, Cost Estimating 

Section 2 - General Industrial Hygiene, Statistics 

Section 3 - Local Exhaust Ventilation, Dilution Ventilation 

Section 4 - Ductwork 

Section 5 - Hoods, Fans, Stacks 

Section 6 - Indoor Air Quality, Thermal Conditions 

Section 7 - Sound and Noise, Radiation  

Learning Outcomes

Upon completion, participants will be able to:

  • Describe the fundamental estimation techniques and calculations related to industrial hygiene and occupational health and safety. 

  • Explain terms and units used in IH- and OH&S-related estimations and formulas. 

  • Apply formulas to practical situations seen in IH and OH&S work. 

  • Generate formulas and mathematical relationships using dimensional analysis 

  • Use IVE AutoCalc Spreadsheets to perform calculations.  

  • Speak knowledgeably with others regarding IH and OH&S estimations and calculations.

Time to Complete

This course will take about 40-50 hours to complete. You will have up to 12 months from your enrollment date to complete it.

Webcourse Materials

Materials are accessible and downloadable via the course Online Community (registrant access only) 

  • Course Lesson Presentations (PPT)

  • Student Lesson Manual (PDF)

  • Useful Equations workbook

  • IVE AutoCalc Spreadsheet (preprogrammed Excel Spreadsheet program)

  • Final exam & Evaluation

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