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Hollow CMU Wall Autolisp
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Hollow CMU Wall

The Hollow CMU Wall plugin calculates the concrete masonry units number for each wall’s thickness, inserts wall tags, wall schedules, and quantity takeoff.

Follow these steps

  1. Download the app in your computer.
  2. Open AutoCAD and type Mylibrary in the command line.
What is a CMU Wall?
The concrete Masonry Units (CMU) are made from Portland cement, water, and mineral aggregates.
They are intended for use in partitions and suitable for exterior walls above grade, where effectively protected from the weather.
The concrete masonry units (CMU) are suitable for both loadbearing or the Solid CMU Wall and non-loadbearing (Hollow CMU Wall) applications, there are three classes of concrete masonry units, lightweight less than 105 lbs./cf. (1682 kg/m3), medium weight from 105 to 125 lbs./cf. (2002 kg/m3) and normal weight of 125 lbs./cf. (2002 kg/m3) or more.
CMU Wall MIX DESIGN
The proportion of coarse aggregate (with respect to total aggregates) should be within a range of 20 to 40 %. Moreover, the exact proportion must be defined experimentally, taking into account both the surface texture and cohesion of the concrete. This should be done by molding 2×4 in (5×10 cm) specimens composed of a 1:9 (cement: aggregate) mixture with different coarse aggregate.
ASTM

C129, Non-Loadbearing Concrete Masonry Units
Version

2.3
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