# How do I add meshes?

**URL:** https://community.freefem.org/t/how-do-i-add-meshes/442
**Category:** General Discussion
**Created:** [May 30, 2020, 2:18am UTC](https://community.freefem.org/t/how-do-i-add-meshes/442 "2020-05-30T02:18:08Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![QuantumNovice](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/quantumnovice/32/169_2.png) [@QuantumNovice](https://community.freefem.org/u/QuantumNovice)
#### Post date: [May 30, 2020, 2:18am UTC](https://community.freefem.org/t/how-do-i-add-meshes/442/1 "2020-05-30T02:18:09Z")

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border top…  
border left…  
border right…  
border bottom…

mesh room1 = buildmesh(top+left+right+bottom)  
mesh room2 = buildmesh(top\_2+left\_2+right\_2+bottom\_2)

How do I do something like this  
mesh floor\_plan = room1 + room2

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<div class="post-metadata">

### Author: ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)
#### Post date: [May 30, 2020, 8:11am UTC](https://community.freefem.org/t/how-do-i-add-meshes/442/2 "2020-05-30T08:11:42Z")

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Exactly like you said, minus the `_` in the variables because it’s forbidden in FreeFEM language. See an [example](https://github.com/FreeFem/FreeFem-sources/blob/develop/examples/hpddm/stokes-2d-PETSc.edp#L21) here.