For Hanger Selection what is considered for spring sizing, cold setting or hot setting?
The current default hanger selection method uses hot setting or hot load design. There is no automatic option at this time to use cold setting or cold load design. To perform a cold load design: Method A • Tools/Model Options/General , add one more temperature case for the model and define at ambient temperature. • Set rigid displacement critera = 0 (so springs are automatically selected even though no thermal displacement) • Run the hanger selection with variation = 0.25 at the new ambient temperature case only. • Springs are all designed now at cold load, change number of temperature cases in Tools/Model Options/General to the original number before step 1 or ignore analyzing this thermal case. Method B • Set rigid displacement critera = 100″ • Run hanger selection with variation = 0.25 • Save hanger report • Re-run hanger selection with rigid displacement critera = 0.1″ • Edit all hangers and replace the cold load value by the V-stop reaction found in step 3. Method A is simpler to
Related Questions
- In the Hanger Selection Analysis dialog, it is displaying V-Stop as supports whereas the user has spring hangers. What criteria does it use to determine the supports?
- Can the furnace and central air conditioner be serviced at the same time or should it be done in the spring or fall before the hot and cold seasons?
- What is cold load and hot load (in reference to hanger design)?
