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8" Concrete Masonry Block Calculator Block Types and Placement Block Types and Placement Data Entry Sheet Data Entry
Estimate ESTIMATE ONLY
Top Courses Base Courses
Bond Beams
Ends Half Height first course. This will add a half height first course. Do not include this extra 4 inches in opening heights
Starters Edit Show Bullnose & Squint
Edit Show Settings


Keyboard: Down Arrow = Add Wall-Window
Up Arrow = Remove Wall-Window



Add Wall Click to add walls Add Window / Opening Click to add windows or Openings Add Gable Click to add gable


Misc  Show Miscellaneous Show or hide any Miscellaneous entries




8" Calculator will calculate the approximate quantity of 8 inch concrete blocks in a standard building.
Enter wall height in courses, number of bond beams, number of starter bars (cores filled), steel door frames (standard 6'8" X 2'8" - no lintel) and number of wall ends. Wall ends are the ends of walls that stand alone. One stand alone wall has 2 ends. A 4 walled box has no ends. Click Add Wall to enter wall lengths and Add Window / Opening to add opening dimensions. Click Delete to remove a window or wall

Use the longest wall measurement, ie: for internal corners, add the 8" to get the longest measurement. Openings are entered by width in inches by 8, height in inches by 4, head course height in courses and number of openings this size. Select boxes for sills, bond beams beneath openings, etc. When all the measurements are correctly entered, click Calculate Quantity to calculate the results.

Try this Vertical Rebar Placement Calculator to mark out vertical rebar placements for your walls.







blocklayer.com recommends Quality Builder - Gary White - All Areas Contact

Slider Controls To fine tune Slider Controls click to select and use (cursor) keyboard keys.

Open new window containing only diagram images in current page ↓ This will better fit printed page. Printing to Scale Help
Print all diagrams on current page

Use your iPad or Android Tablet On-Site Your iPad, iPhone or Android Tablet or Phone is a valuable On-Site tool!
Lay your phone or tablet on an angled surface (roof ?) to directly measure angles and automatically calculate Roofing and Pitch Angle Apps.

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ALWAYS CHECK WITH YOUR LOCAL BUILDING AUTHORITY BEFORE LAYING OUT OR BUILDING ANYTHING
AND FOLLOW ALL LOCAL CODES. VERIFY ALL DIMENSIONS AND ANGLES BEFORE CONSTRUCTION


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