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Reference Guide - 288 pp
Covers the materials
Special Piping
Updated CDC stats about drowning
current reference on the fundamentals of concrete technology and construction
Trane Ductulator, 1976 or later Practice Exam:Add Practice Exam Reference Guide - 288 ppThe Ductulator Duct Sizing Calculator is a hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective sleeve with ASHRAE recommended design air velocities for system components
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