If on Heating Contractor Exam you get a heat load question regarding a structure that has a slab on grade, make sure you understand a few differences. First, the areas (sq.ft) of opaque panels are not used in the heat load calculations. Look at pg. 435, ground slab load calculations are based on F-values. F-values are simply the heat loss per foot of exposed edge. You use a linear measurement, not a square foot measurement that is used on every other opaque heat load calculation.
Heating Load = HTM x Running Feet of Exposed Edge
So, if you receive a question – What is the heat gain for a slab on grade? Take the gift! There is no reason to dread heat load questions, only educated. NCCTI can help, our ACCA Tutorials that are included in NC Heating Exam Prep Courses, will make learning easy. Sign up now.