Cmu block weight

The versatility of concrete masonry as a construction assembly is well established through the variety of applications and structures it is used to create.

Many of these attributes are measured quantitatively, and often vary directly with the weight of the concrete masonry wall. Additional wall properties are also impacted by wall weight, although estimates of these properties are based on concrete density or aggregate type, rather than directly on wall weight. Examples of these properties include:. Tables 1 through 8 list concrete masonry wall weights for 4 to 16 inch to mm thick single wythe walls. Wall weights for grouted 4-in. NCMA and the companies disseminating this technical information disclaim any and all responsibility and liability for the accuracy and the application of the information contained in this publication. Member Login.

Cmu block weight

Standards applicable to cmu contain three classifications of weight, expressed in pounds per cubic foot: Normal Weight, Medium Weight, and Lightweight. Normal Weight is lbs. Medium Weight is less than to lbs. In addition to precision and split face gray, a scored split and standard color are normally available. Lightweight is less than lbs. Normally stocked in selected sizes in gray. Note: both Medium Weight and Lightweight units are made with "Lightweight" aggregates. To specify a cmu solely on the statement that it be made with Lightweight aggregates does not provide adequate definition. Of the three weights, Normal Weight is the least expensive and Lightweight is the most expensive. Medium Weight is most popular and therefore has greatest availability for structural applications as its moderate weight and cost generally offer the best labor production to material cost ratio. For example weights per units and wall area, please see charts in Technical Articles, Average Weights. Contact Us. Weights of CMU. Request Info Careers.

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How much does a CMU block wall weigh? It can range from a few pounds per square foot to several hundred pounds per square foot for larger and thicker walls. What is the weight of a CMU wall per linear foot? The weight of a CMU wall per linear foot depends on the height and thickness of the wall. It can range from a few pounds to several hundred pounds per linear foot.

Cmu block weight

Standards applicable to cmu contain three classifications of weight, expressed in pounds per cubic foot: Normal Weight, Medium Weight, and Lightweight. Normal Weight is lbs. Medium Weight is less than to lbs. In addition to precision and split face gray, a scored split and standard color are normally available. Lightweight is less than lbs. Normally stocked in selected sizes in gray. Note: both Medium Weight and Lightweight units are made with "Lightweight" aggregates. To specify a cmu solely on the statement that it be made with Lightweight aggregates does not provide adequate definition. Of the three weights, Normal Weight is the least expensive and Lightweight is the most expensive. Medium Weight is most popular and therefore has greatest availability for structural applications as its moderate weight and cost generally offer the best labor production to material cost ratio.

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Weights of CMU. In general, 8-in. Heat capacity, an indication of thermal storage capacity, with heavier walls providing higher heat capacities and potentially better energy performance. Member Login. For example, a typical hollow 8 in. Additional wall properties are also impacted by wall weight, although estimates of these properties are based on concrete density or aggregate type, rather than directly on wall weight. Painting or coating the surface of the concrete masonry assembly reduces the NRC for both lightweight and normal weight concrete masonry. These smaller face shells result in slightly lower calculated wall weights for 10, , and in. The higher the STC rating, the better the assembly can block or reduce the transmission of sound across it. Normal Weight is lbs. In general, for a given concrete masonry unit mix design, higher compressive strengths can be achieved by increasing the unit density through adjustments to the manufacturing methods. International Code Council, , and Each unit has square ends and two square cores, as shown in Figure 1. Wall weights for grouted 4-in.

Concrete blocks, also known as Concrete Masonry Units or CMUs, provide very durable structural and non-structural partitions. They are generally used as a backup wall that gets covered with a finish material or exposed in utilitarian spaces like mechanical rooms or basements. They can be painted to provide a cleaner finish, but they are also manufactured with different finishes that help improve the aesthetic quality over the traditional gray CMU.

Actual units may have higher or lower equivalent thicknesses than those shown, with corresponding higher or lower fire resistance ratings. The mortar joint depth is equal to the thickness of the face shell or web on which it is placed i. In general, 8-in. Therefore, for a given unit compressive strength and mortar type, the strength of the masonry assembly is unaffected by the unit density. Keywords acoustics aesthetics compressive strength concrete density energy efficiency fire resistance ratings movement control productivity water penetration resistance. Member Login. In addition to precision and split face gray, a scored split and standard color are normally available. Holm, T. One reason is that water penetration resistance is known to be highly affected by workmanship and dependent on detailing for water management. International Building Code. Assuming a similar surface texture and coating, a concrete masonry wall constructed with lightweight units will have a higher NRC than a companion wall constructed with normal weight units, due to the larger pore structure often associated with lower density units.