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Is this the right work flow for design builder?

asked 2014-12-22 03:20:47 -0600

Waseem's avatar

updated 2017-05-03 19:21:08 -0600

1) I am creating the geometry of a model in Design Builder. I normally create outline blocks, create all rooms (each room considering as separate zone), circulation spaces etc and then convert them into building blocks. Does this the right approach? OR I have to create one side of the Block (set of rooms/zones) as outline block and then divide that main block into zones (rooms) by using Draw Partition tool. The first approach worked fine for me but just wondering is this the right way of doing it. By this way there are lots of blocks with one zone each. Does this the right way, I mean having many blocks with one zone each?

2) What is the quickest way to draw windows/doors on surface that is adjacent to other surface of a different zone. Do I have to use construction lines and then going into the zone and then to the surface to draw windows or there is some other way of doing it?

3) What is the best way of checking building's geometry? One can use visualise tab but I mean to check whether the surfaces are properly matched or not. I normally export it as .IDF and then open it in OpenStudio. BUT openstudio can change the geometry sometimes( which is strange). I guess this happens while translating IDF to openstudio file.

4) Finally, the wall thickness will be calculated from the materials that I assign in the Construction tab or not? If the geometry has been drawn by using Method 1 discussed above then will Design Builder consider adjacent walls of two zones (blocks) as partitions walls and will assign materials of partition wall?


Kindest Regards


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answered 2014-12-29 23:39:09 -0600

Xandrika's avatar

updated 2014-12-30 00:30:46 -0600

1) It's better to create one block (e.g. one storey) and then draw partitions to define the zones. Have a look to the video tutorials. They explain everything in detail.

2) you can use construction lines but it's easier to use the drawing tools. image description

3) I am not sure. But I think when the simulation is running fine (without errors) there should be not problem.

4) Designbuilding has different conventions for drawing. Select the template which best fits the way you would like to define the building geometry:

  • External measurements - the default option where the surface dimensions used in thermal calculations are derived from the zone outer geometry and air volumes and floor areas from the inner geometry. Note that this option is not compatible with the UK NCM which requires internal surface dimensions to be used in heat transfer calculations.
  • External measurements to top of roof - like External measurements but zone geometry extends to the top of the roof.
  • Internal measurements - a simpler option where blocks are created using internal measurements and zone surfaces are derived directly from this.
  • External measurements, internal zone geometry - blocks are defined using external measurements and surfaces dimensions, zone volume and floors areas are all derived from the inner zone geometry.

You can select the template while creating a new building at site level. Read more here

you can change geometry convention later here: image description

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Thanks @Xandrika :)

Waseem's avatar Waseem  ( 2015-01-09 10:00:05 -0600 )edit

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Asked: 2014-12-22 03:20:47 -0600

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Last updated: Dec 30 '14