LSS Arch
'LSS Arch' is a commercial extension, which allows you to draw, edit and list basic building elements.
LSS Arch


Extension allows to draw, edit and list basic building elements, such as walls, columns, slabs etc.


Extension allows to draw basic elements:

  • walls
  • columns
  • beams
  • slabs
  • slope objects (for example single slope roofs or hipped roofs)
  • openings (including corner openings)

Advanced elements including:

  • thick face
  • 3D mesh

Meta-objects, which may allow to model complex objects like railings:

  • grid
  • contour

Referencing elements:

  • zone object (allows to estimate geometric parameters of closed rooms like area, perimeter, volume etc)
  • elevation/level marks


It is possible to rebuild manually edited (with native SketchUp tools) objects and to change parameters of selected objects, which were previously created using LSS Arch extension tools.

Labeling, Listing

Extension allows to attach text labels with identification information in a batch manner and generate lists (reports) with information about selected objects, which were created using LSS Arch extension tools. Generated reports can be saved to an HTML or CSV files.

Useful Utilities

  • Save LSS Arch Objects
  • Restore LSS Arch Objects
  • Convert Imported IFC Objects
  • Set IFC Attributes
  • Explode Down to LSS Arch Objects
  • Explode Down to Faces
  • Load Points
  • Downsample Points
  • Edit Section Fill
  • Chronolux Tool (allows to perform sun studies and SVF calculation)
  • Convert to LSS Arch Objects (converts selected groups/components to LSS Arch objects)

Useful Features

  • Layers dialog (allows to adjust visibility of layers related to LSS Arch)
  • Levels dialod (allows to create floor levels structure)
  • Auto-alignment of material textures and manual texture placing for certain object types
  • Filled section utility (allows to generate a group of faces, which represents a section fill)
  • Library of steel sections (for beam and column objects)
  • Tool presets (allow to save/restore settings of complex objects)
  • Displaying of object's dimensions while drawing and editing (use tool's context menu to enable dimensions displaying)
  • Auto-annotation feature, which allows to draw dimensions of objects (like width, height, length etc) automatically
  • Openings can follow wall's surface (i.e. it is possible to insert corner openings or openings into a curved wall)
  • Ability to perform basic arithmetic operations (like "+", "-", "*", "/") over values entered using VCB, while hovering over adjustment points (i.e. it is possible for example to offset an opening 300mm left or right just by typing "+300" or "-300" and hitting Enter while hovering over opening's insertion point)
  • Chamfer/fillet capabilities

Getting Started

Enable LSS Arch Toolbar

  1. open 'Toolbars' dialog by choosing SketchUp Main Menu>>View>>Toolbars...
  2. find 'LSS Arch' toolbar within the list of toolbars
  3. check corresponding checkbox to enable 'LSS Arch' toolbar
  4. (optional) right-click anywhere at SketchUp's toolbar area and enable 'LSS Arch' toolbar using pop-up menu
  5. (optional) enable utilities toolbar

Adjust Basic Settings

First of all it is recommended to adjust user interface settings of LSS Arch extension according to screen resolution and personal preferences

  • choose LSS Arch dialogs' size: standard or small
  • set grips magnify factor, which is appropriate for your screen resolution
  • set rotation adjustment point offset (the same logic here as for grips size)
  • enable vector icons for a high resolution monitor

Common Tool Operation

  1. open tool dialog by clicking appropriate speed-button of LSS Arch toolbar or by choosing apropriate tool name from Main Menu>>Plugins>>LSS Arch
  2. (optional) adjust 'arch' object's settings: geometry, materials, identification etc
  3. click topmost command button of the dialog to start 'arch' object creation in an active model
  4. click at starting point to begin drawing of object's contour
  5. move cursor and click to add new vertices to a contour or enter offset value from keyboard using value control box (VCB)
  6. double-click at ending point or single-click at ending point and press <End> key to finish drawing of a contour
  7. (optional) finish drawing of a contour at starting point
38 users
16.86 MB
LSS Arch (1.9.5); March 3, 2019
Trial Period: 
30 days
Number of Views: 
OS Compatibility: 
Extensions: 5
Architect since 2000. SketchUp enthusiast since 2008.