hi all,
in a project that i have to simulate, i have four types of floor plates that
repeat after an interval. please see rough sketch attached. i have the
following questions towards the working of the same.
1. can i group these floor plates as a shell and use shell multipliers to
get the result. please explain how to effectively use floor multipliers and
shell multipliers.
2. in the design development wizard, we can create as many shells as
necessary. Do i need to create one HVAC system for each of the respective
shells created or is it okay to have just one system in place for all the
different floor plates. please explain / suggest the better way to work with
this.
thanks!
--
Regards,
Ar. Kirti Pramod Pabrekar.
Hi Kirti,
For common reference, the illustration reads, from the ground up: Floor
plan/plate # 1,2,3,4,1,2,3,4
1a.) Each floor may be defined as a separate shell. This is common
practice when it's considered necessary to differentiate zoning per
level. Shell multipliers, if used, should only used for floors #2 and
#3. Floor plans #1 and #4 are each unique, representing the ground and
top floor respectively - if you applied a 2x multiplier to them you'd
double your roof/ground-perimeter loads.
1b.) Using multipliers for floors (shells) #2 and #3, the 3D view of
the building model will look something like this, from the ground up:
1,2,3,4,1,*hole*,*hole*,4. From this, you can see you must at minimum
define 6 shells. Copy the 4th floor plan's shell for the top floor, and
differentiate by defining the roof construction (where the others will
have no roof defined). Differentiate the ground floor by including the
slab-on-grade/floor construction (where the others will not include a
floor construction).
2.) Remember fewer shells is generally a virtue. You may use just one
HVAC system, if desired. An HVAC system assigned to a shell with
multipliers is assigned to each shell in the same fashion, if I'm not
mistaken. Whether you end up with one system overall, one per zone or
one per shell (floor) after the wizards is dependent on what you set for
the "system per ..." input field in the wizard HVAC screens.
~Nick
NICK CATON, E.I.T.