There's no need for charts and tables... simply draw your intended wall length and nz_Bricks&Blocks will create a wall to brick dimensions that best fits your intention.

That which you would otherwise need to lookup now displays and updates in real-time on-screen, providing feedback and analysis (inc. brick count) for limitless lengths and heights... 

Information about the wall you have created will be saved to the resultant block which you can later access by right-clicking the nz_Bricks&Blocks group

Best of all not only can you locate your doors and windows properly, you can also simply dimension your model accurately from the 3D representation of exactly what those dimensions mean... Keep the bricks and turn them into details or delete them leaving behind an accurate model.

Conveniently the Bricks and Blocks are made up of components so your can continue manipulating your design with ease.

Home page - https://extensions.sketchup.com/en/content/nz_bricksblocks