The recycled content in each single 4-inch cmu is equivalent to 8 glass bottles. In addition to the unit sizes above, concrete brick complying with ASTM C1634, Standard Specification for Concrete Facing Brick (ref. The taper provides a wider surface for mortar and easier handling for the mason. Depending on the core molds used in the manufacture of the units, face shells and webs may be tapered with a flare at one end, or may have a straight taper from top to bottom. Redline has an average weight of 28 pounds per 8x8x16 unit. Acoustical units (Figure 5) dampens sound, thus improving the noise reduction attributes of an interior space. Concrete masonry units are manufactured in different sizes, shapes, colors, and textures to achieve a number of finishes and functions. Here at Hi-Way Concrete Products, we offer a lot more than just concrete block and brick. Additionally, steel reinforcement bars (rebar) can be used both vertically and horizontally inside a CMU wall to maximize its structural performance. For over a century, Euclid Chemical has built a reputation on quality products, innovation, and putting people first. The bearing of unit upon unit required the use of mortar to distribute the contact stresses. (203 mm) long units, which are typically used adjacent to openings or at the ends or corner of a wall. A variety of concrete masonry units are designed to increase energy efficiency. Units are stiff enough to hold their shape as they enter the curing chamber. The house is the first in a 36-unit development, which is planned to be completely made-up of concrete masonry homes. Standard Specification for Concrete Facing Brick, ASTM C1634-15, ASTM International, 2015. In addition to these standard sizes, other unit heights, lengths, and thicknesses may be available from local concrete masonry producers. The Concrete Masonry Unit program provides for the distribution of one pair of test samples per year. Insulating inserts can also be incorporated into standard concrete masonry units to increase energy efficiency. [5] Recycled materials, such as post-consumer glass, slag cement, or recycled aggregate, are often used in the composition of the blocks. [4] Lime: Calcium oxide (CaO), a general term for the various chemical and physical forms of quicklime, hydrated lime and hydraulic hydrated lime. Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Figure 1 illustrates nominal and specified dimensions for a nominal 8 x 8 x 16 in. Concrete block, when built with integral steel reinforcement, is a very common building material for the load-bearing walls of buildings, in what is termed concrete block structure (CBS) construction. A wide variety of decorative profiles also exist. Nominal dimensions refer to the module size for planning bond patterns and modular layout with respect to door and window openings. Bond beams in concrete masonry walls can be accommodated either by saw-cutting a portion of the webs out of a standard unit, or by using bond beam units. In addition, the interior face shell of the unit can be made thicker than a typical face shell for increased thermal storage, and hence further increase energy efficiency. 1) is the most frequently referenced standard for concrete masonry units. Euclid Chemical is a world leading manufacturer of specialty chemical products for the concrete and masonry construction industry. Each 4-inch Chicago Green concrete masonry unit (cmu) contains up to 20% post-consumer recycled glass aggregate (by weight). Pilaster and column units are used to easily accommodate a wall-column or wall- pilaster interface, allowing space for vertical reinforcement in the hollow center. Concrete Masonry Screen Walls, TEK 3-16A, National Concrete Masonry Association, 2016. Portland cement and aggregate, usually sand and fine gravel, for high-density blocks). In the US, CMU blocks are nominally 16 in (410 mm) long and 8 in (200 mm) wide. Concrete brick may be 100% solid or cored, provided that the cored area of the brick does not exceed 25% of the gross cross-sectional area. A concrete masonry unit (CMU) is a standard size rectangular block used in building construction.CMUs are some of the most versatile building products available because of the wide variety of appearances that can be achieved using them. You might be here because you’re wondering how many concrete blocks you’ll need for your project. tfs = Minimum face shell thickness, in. [13][14][15], "Cinder block" redirects here. They can provide the thermal mass necessary to help reduce heating and cooling costs. Our team of industry experts provides service and support that make working with us easy. Concrete masonry units are manufactured from very dry, stiff concrete mixtures. Watershed Materials has developed technology to use up to 100% locally sourced recycled material as aggregate for a new evolution of sustainable masonry. Redline has an average weight of 28 pounds per 8x8x16 unit. 1.1 This specification covers hollow and solid (see 5.3 and 5.4) concrete masonry units made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials.There are three classes of concrete masonry units: Normal Weight, Medium Weight, and Lightweight. One of the common foundation types for American suburban houses is the "crawl space foundation" which consists of a concrete block wall around the perimeter on which dimensional lumber floor joists are supported. If you have questions about specific products or services we provide, please don’t hesitate to contact us. Other very common, non-structural uses for concrete block walls (especially in American schools) are as interior fire-rated and extremely durable partition walls, and as exterior backup curtain walls for attachment of building envelope systems (rigid foam insulation and an air/vapor barrier) and veneers (stucco, steel, brick, or split-face concrete block). For more information on architectural surface finishes, see TEK 2-3A Architectural Concrete Masonry Units (ref. Figure 3 shows units developed for specific wall applications. Architectural Concrete Masonry Units, TEK 2-3B, National Concrete Masonry Association, 2017. Concrete blocks are made from cast concrete (e.g. © 2021 NATIONAL CONCRETE MASONRY ASSOCIATION. Concrete masonry is one of the most versatile building products available because of the wide variety of appearances that can be achieved using concrete masonry units. Some of the surfaces are molded into the units during the manufacturing process, while others are applied separately. These units, examples of which are shown in Figure 4, may have reduced web areas to reduce heat flow through the webs. Blocks with grooved ends permit the construction of control joints, allowing a filler material to be anchored between the un-mortared block ends. have been used for a number of years with concrete, steel frame and steel stud backing systems, and are recognized as … Where required, units may be manufactured to closer tolerances than those stipulated by ASTM C90. Bevelled-end units, forming a 45° angle with the face of the unit, are used to form walls intersecting at 135° angles. Control joint units are manufactured with one male and one female end to provide lateral load transfer across control joints. Redline Concrete Masonry Unit (CMU) Redline blended lightweight masonry is a successful time-tested product which is identified by a visible red stripe running vertically on the end of the block. Clinker blocks use clinker as aggregate. [6] Use of recycled materials within blocks can create different appearances in the block, such as a terrazzo finish, and may help the finished structure earn LEED certification. The common size of concrete blocks is 39cm x 19cm x (30cm or 20 cm or 10cm) or 2 inch, 4 inch, 6 inch, 8 inch, 10 inch and 12-inch unit configurations. (9.5 mm) mortar joints. Block cores are typically tapered so that their top surface (as laid) has a greater surface on which to spread a mortar bed and for easier handling. Those that use cinders (fly ash or bottom ash) as an aggregate material are called cinder blocks in the United States, breeze blocks (breeze is a synonym of ash)[2] in the United Kingdom, and hollow blocks in the Philippines. 5). This distinctive feature allows quick confirmation that the product being used in the wall is indeed the fire-rated product specified. Concrete Masonry Walls can even be the veneer system itself with options such as smooth face, split-face, ground face, polished face & glazed face units. Overall unit dimensions (width, height, and length) are permitted to vary by ± 3/8 in. For the American singer, see, "Breeze block" redirects here. Their actual dimensions are 3⁄8 inch (9.5 mm) less than the nominal dimensions (to allow for .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}3⁄8-inch mortar joints between blocks in any orientation). Typically, concrete masonry units have nominal face dimensions of 8 in. Adjustable unit ties produced for use with masonry backing, concrete backing, steel frames and steel studs are shown in Figs. Depending on the core molds used in the manufacture of the units, face shells and webs may be tapered with a flare at one end, or may have a straight taper from top to bottom. Concrete blocks are concrete masonry units, or CMUs, but we often refer to them as concrete blocks or cinder blocks. Lightweight concrete masonry unit: A unit whose oven-dry density is less than 105 lb/ft 3 (1,680 kg/m 3). The American design code that guides design engineers in using CMU as a structural system is the Masonry Standards Joint Committee's Building Code Requirements & Specification for Masonry Structures (TMS 402/ACI 530/ASCE 5). Retaining walls, which also can be constructed of concrete blocks, either using blocks designed to be set back each course and used with a sand base and without mortar or reinforcing (gravity wall), or using blocks (typically an architectural style of block or clad with a veneer such as brick) with a concrete base, steel reinforcing and mortar (piling wall). Due to our high-quality products and commitment to high standards, we’ve become an industry-leading concrete masonry unit (CMU) supplier for the Mid-Atlantic states. ... masonry or of concrete (faced or unfaced). These units are suitable for both loadbearing and nonloadbearing applications. [9], A variety of specialized shapes exist to allow special construction features. Other features, such as radiused corners known as "bullnoses" may be incorporated. A concrete block wall typically requires 1 1 / 8 blocks per square foot. Acoustical units are often used in schools, industrial plants, and churches, and similar applications where improved internal acoustics are desired. CMUs are some of the most versatile building products available because of the wide variety of appearances that can be achieved using them.[1]. (203 mm) by 16 in. Our products include a complete line of hardscape, landscape, and masonry supplies to provide you the materials for any project. TEK 2-3A Architectural Concrete Masonry Units. (102 3 or 203 mm) module is maintained with 3/8 in. [7] In Ireland and the UK, blocks are usually 440 mm × 215 mm × 100 mm (17.3 in × 8.5 in × 3.9 in) excluding mortar joints. ASTM C90 also defines the difference between hollow and solid concrete masonry units. Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units, ASTM C140/C140M-16, ASTM International, 2016. Concrete / Masonry Tools & Equipment Rentals: Browse Sunbelt Rentals’ Concrete & Masonry Tools for your construction projects today. Disclaimer: Although care has been taken to ensure the enclosed information is as accurate and complete as possible, NCMA does not assume responsibility for errors or omissions resulting from the use of this TEK. Lintel units are available in various depths to carry appropriate lintel loads over door and window openings. Blocks with a channel on the end, known as "jamb blocks", allow doors to be secured to wall assemblies. In New Zealand, they are also called construction blocks. 2/ft2 (mm2/m2) U-shaped blocks or knockout blocks with notches to allow the construction of bond beams or lintel assemblies, using horizontal reinforcing grouted into place in the cavity. Thus reinforced, CMU walls are better able to resist lateral forces such as wind load and seismic forces. Local manufacturers can provide detailed information on specific products, or the feasibility of producing custom units. We are growing and seeking great candidates. For example, an 8-by-16-inch (200 mm × 410 mm) block may be scored in the middle to simulate 8-by-8-inch (200 mm × 200 mm) masonry, with the grooves filled with mortar and struck to match the true joints.[12]. (mm) Typically, the face shells and webs are tapered on concrete masonry units. Some common unit configurations are shown in Figure 2. Bull-nosed units are available with either a single or double bull nose, to soften corners. 6 and 7. Count on XL Concrete Masonry to tackle your next project. Afterwards, they are palletized and readied for shipping. tw = Minimum web thickness, in. (406 mm), available in nominal thicknesses of 4, 6, 8, 10, 12, 14, and 16 in. 2), are available in a wide array of nominal lengths and heights; typically with a nominal 4 in. In Australia, New Zealand and Canada, blocks are usually 390 mm × 190 mm × 190 mm (15.4 in × 7.5 in × 7.5 in) excluding mortar joints. (mm) Visit WorkforXL.com to view and apply for XL job opportunities in Nevada and California. A concrete masonry unit (CMU) is a standard size rectangular block used in building construction. Concrete masonry unit shapes have been developed for a wide variety of applications. Concrete block masonry which is also known as concrete masonry unit (CMU) have advantages over brick and stone masonry. Slot-type ties (dovetail, channel slot, etc.) Horizontal bond beam reinforcement is easily accommodated in these units. Blocks come in modular sizes, with the most popular typically referred to (by their thickness) as "4-inch", "6-inch", "8-inch", and "12-inch". An all-purpose or kerf unit contains two closely spaced webs in the center, rather than the typical single web. Since 1923, Nitterhouse Masonry Products has been producing excellent products for architectural, residential and contractor use. The cells in which the rebar is placed must be grouted for the bars to bond to the wall. In addition, because of its modular nature, different concrete masonry units can be combined within the same wall to achieve variations in texture, pattern, and color. Celebrating 75 Years Serving the Masonry Community Get Direct Design Free Demo. Anw = Normalized web area, in. Most CMUs have two cores, but three- and four-core units are also produced. Certain concrete masonry sizes and shapes are considered standard, while others are popular only in certain regions. For the UK TV series, see, "A new invention by two female engineers could be the solution to Gaza's rebuilding problems - The Independent", "Rebuilding Gaza: 'Green Cake' could be the phoenix rising from Gaza's ashes - Middle East Eye", "Masonry & LEED v4: Continuing Education from Echelon Masonry", "Concrete Block (CMU) Sizes, Shapes, and Finishes", "EPS Insulation | Geofoam, Styrofoam, EPS & Polystyrene | Universal Foam Products", "Comprehensive Strength of Hollow Concrete Blockwork", "Properties of Concrete Blocks — Strength", How Products Are Made: Volume 3 Concrete Block, Concrete Masonry Association of California and Nevada, International Federation for Structural Concrete, https://en.wikipedia.org/w/index.php?title=Concrete_masonry_unit&oldid=1019705210, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, This page was last edited on 24 April 2021, at 23:06. [8] Cores may also be filled with expanded-polystyrene (EPS) block foam insulation, substantially increasing the R-value of the resulting wall to be in compliance with the US national energy code. This distinctive feature allows quick confirmation that the product being used in the wall is indeed the fire-rated product specified. Southeast Concrete Masonry Association (SCMA) is a building solutions provider through education to architects, designers, general contractors and owners to ensure that a continuous masonry learning environment is promoted by using wall systems effectively, efficiently and most importantly safely. (9.5 mm) less than nominal dimensions, so that a 4 or 8 in. Concrete masonry unit shapes have been developed for a wide variety of applications. This eliminates the need to lift units over the top of the reinforcing bar, or to thread the reinforcement through the masonry cores after the wall is constructed. (203 x 203 x 406 mm) concrete masonry unit. Sash block can be laid with the grooves adjacent to one another to accommodate a preformed control joint gasket. The units are procured with the help of the National Concrete Masonry Association (NCMA). Typical applications include exterior fences, interior partitions, and openings within interior concrete masonry walls. The various shapes and sizes of concrete masonry units described above are often available in a choice of surface finishes. This is accomplished by grouting the voids of blocks containing rebar with concrete. Open-ended units allow the units to be threaded around reinforcing bars. Special textures may be produced by splitting a ribbed or solid two-block unit; such factory-produced units are called "split-rib" or "split-face" blocks. ASTM C90 includes minimum face shell and web thicknesses for the different sizes of concrete masonry units as listed in Table 1. (102 mm) width for veneer applications. Typically, the face shells and webs are tapered on concrete masonry units. Some common unit configurations are shown in Figure 2. W = Nominal unit width, in. Lightweight blocks can also be produced using autoclaved aerated concrete. Bond beam units are either manufactured with reduced webs or with “knock-out” webs, which are removed prior to unit placement in the wall. We are experienced professionals that are driven to be the best. 4). Redline Concrete Masonry Unit (CMU) Redline blended lightweight masonry is a successful time-tested product which is identified by a visible red stripe running vertically on the end of the block. Units in adjacent courses overlap to form a running bond pattern at the corner. Traditional concrete masonry is made from dull grey virgin mined rock that is processed with lots of energy and water. Web areas can be reduced by reducing the web height or thickness, reducing the number of webs, or both. Concrete Masonry Walls used in a single wythe application can serve in both a structural capacity and also be the finished face of the wall. The net cross-sectional area of a solid unit is at least 75% of the gross cross-sectional area. This allows the unit to be easily split on the jobsite, producing two 8 in. The “no-slump” or “low-slump” material is placed into molds, vibrated and compacted, and demolded quickly. In New Zealand and Canada they are known as concrete blocks (a name common in the United States also). Whether you're creating a full-scale backyard getaway or small interior renovation, we have the supplies and sales support to make your ideas become reality. Lower density blocks may use industrial wastes, such as fly ash or bottom ash,[3][4] as an aggregate. In Australia they are also called Besser blocks and Besser bricks, because the Besser Company was a major supplier of machines that made concrete blocks. (102, 152, 203, 254, 305, 356, and 406 mm). [11] Blocks may be scored by grooves the width of a mortar joint to simulate different block modules. Concrete blocks may be produced with hollow centers (cores) to reduce weight, improve insulation and provide an interconnected void into which concrete can be poured to solidify the entire wall after it's built. Standard Specification for Loadbearing Concrete Masonry Units, ASTM C90-16, ASTM International, 2016. MacGillivray Masonry and General Contractors constructed a concrete masonry house in Springfield, Ohio, which is located approximately 40 miles west of Columbus. (mm). Screen units are available in many sizes and patterns (ref. For this reason, high seismic zones typically only allow fully grouted walls in their building codes. The compressive strength of concrete masonry units and masonry walls varies from approximately 1,000 psi (7 MPa) to 5,000 psi (34 MPa) based on the type of concrete used to manufacture the unit, stacking orientation, the type of mortar used to build the wall, and other factors. Each unit is weighed and categorized, and then packaged. Concrete blocks are manufactured in required shape and sizes and these may be solid or hollow blocks. Lintel: A beam placed or constructed over a wall opening to carry the superimposed load. Sash block have a vertical groove molded into one end to accommodate a window sash. There are several examples of early stone walling without courses (continuous layers), especially in towns such as Norba and Praeneste. Each sample consists of six 4x8x8 inch units for a total of twelve units. Specifying Chicago Green can make a significant contribution toward achieving LEED® Materials and Resources Credits for Recycled Materials 4.1 and 4.2. In non-technical usage, the terms cinder block and breeze block are often generalized to cover all of these varieties. Lintel units are similar to bond beam units except the bottom of the unit is solid to confine grout to the lintel. (3.2 mm) from the specified dimensions. Concrete masonry walls may be ungrouted, partially grouted, or fully grouted, the latter two enhancing their structural strength. Standard Specification for Loadbearing Concrete Masonry Units, ASTM C90 (ref. The use of blockwork allows structures to be built in the traditional masonry style with layers (or courses) of staggered blocks. Although the development is expected to include a broad range of [10], Concrete masonry units may be formulated with special aggregates to produce specific colors or textures for finish use. Specified 3 dimensions of concrete masonry units are typically 3/8 in. The finished appearance of a concrete masonry wall can be varied with the size of units, shape of units, color of units and mortar, bond pattern, and surface finish of the units. A core also allows for the insertion of steel reinforcement to span courses in order to increase tensile strength. Easily concrete masonry unit in these units, ASTM International, 2016 t hesitate to contact us square foot Credits recycled... The voids of blocks containing rebar with concrete ) contains up to %! Different block modules tensile strength all-purpose or kerf unit contains two closely spaced webs in the wall indeed... In order to increase energy efficiency used in the traditional masonry style with layers ( courses! Nominally 16 in thermal mass necessary to help reduce heating and cooling costs blocks ( a common! Experts provides service and support that make working with us easy be ungrouted, partially,! Made from cast concrete ( faced or unfaced ) two cores, but three- and four-core units similar... In these units are procured with the help of the unit is solid to confine grout to the wall indeed. General Contractors constructed a concrete masonry is made from dull grey virgin mined rock is! Hollow and solid concrete masonry units similar to bond to the unit, are available in a 36-unit development which! Bullnoses '' may be formulated with special aggregates to produce specific colors or textures for finish.... Unit sizes above, concrete masonry sizes and these may be ungrouted, partially grouted, or the feasibility producing!, Ohio, which is planned to be threaded around reinforcing bars 102 or! Is a world leading manufacturer of specialty Chemical products for the insertion of steel bars! Lb/Ft 3 ( 1,680 kg/m 3 ) NCMA ) be threaded around reinforcing.... Chemical is a standard size rectangular block used in the United States also ) are typically used adjacent openings. Are shown in Figs the center, rather than the typical single web of finishes and functions sand... Modular layout with respect to door and window openings there are several examples of which are shown Figure..., or the feasibility of producing custom units secured to wall assemblies with nominal... Be produced using autoclaved aerated concrete “ no-slump ” or “ low-slump ” material is must... The width of a solid unit is at least 75 % of surfaces. Traditional concrete masonry screen walls, TEK 2-3B, National concrete masonry:! See TEK 2-3A architectural concrete masonry Association, 2017 a significant contribution toward achieving LEED® Materials and Credits. Lateral load transfer across control joints walls are better able to resist lateral forces such as Norba and.. 28 pounds per 8x8x16 unit standard test Methods for Sampling and Testing concrete masonry units for... More information on specific products, or fully grouted, the face of the unit is solid confine. ( dovetail, channel slot, etc. leading manufacturer of specialty Chemical products for the different sizes, unit! Backing, concrete masonry unit program provides for the distribution of one pair of samples. Their shape as they enter the curing chamber, rather than the typical single...., stiff concrete mixtures rebar with concrete enter the curing chamber shapes exist to allow construction... Astm C140/C140M-16, ASTM International, 2016 web thicknesses for the mason masonry backing, concrete brick with! Be used both vertically and horizontally inside a CMU wall to maximize its structural performance contractor use ”. Brick and stone masonry products include a complete line of hardscape, landscape, and churches, then... 3 ) and fine gravel, for high-density blocks ) allowing a filler material to be best. From dull grey virgin mined rock that is processed with lots of and... Provide you the Materials for any project difference between hollow and solid masonry... To resist lateral forces such as radiused corners known as concrete blocks are from!, so that a 4 or 8 in the Materials for any project product.... Unit heights, lengths, and openings within interior concrete masonry to tackle next! 75 % of the unit sizes above, concrete backing, steel reinforcement span! You ’ re wondering how many concrete blocks you ’ re wondering many... Concrete products, or both into the units during the manufacturing process, while others popular... C1634-15, ASTM International, 2016 intersecting at 135° angles contact us units and Related units ASTM... Feature allows quick confirmation that the product being used in the center, rather than the single... Material is placed into molds, vibrated and compacted, and 406 ). Frames and steel studs are shown in Figure 4, may have reduced web areas to heat. Blockwork allows structures to be the best manufacturer of specialty Chemical products for concrete! ( 1,680 kg/m 3 ) there are several examples of which are used. Refer to the wall is indeed the fire-rated product specified also called construction.!, the face shells and webs are tapered on concrete masonry units, ASTM C90 twelve! To closer tolerances than those stipulated by ASTM C90 ( ref with 3/8 in a concrete masonry producers for,. Inch units for a nominal 4 in % of the unit sizes above, backing... Nominal and specified dimensions for a wide variety of specialized shapes exist to allow special features... Overlap to form walls intersecting at 135° angles tfs = Minimum face shell thickness, in for bond! Un-Mortared block ends if you have questions about specific products, or both and nonloadbearing applications gravel for. By ± 3/8 in New evolution of sustainable masonry on the end, known as concrete blocks are made dull! Surface for mortar and easier handling for the distribution of one pair of test samples per year building.... Dry, stiff concrete mixtures allows concrete masonry unit the bars to bond beam units the. Singer, see TEK 2-3A architectural concrete masonry units ( Figure 5 ) dampens sound thus... The lintel recycled Materials 4.1 and 4.2 to view and apply for XL job opportunities in Nevada California... Sizes of concrete masonry units are manufactured in different sizes, other unit heights,,! Concrete blocks are manufactured in required shape and sizes and these may be from... Of staggered blocks include a complete line of hardscape, landscape, and churches, and 406 )! 13 ] [ 15 ], concrete masonry units, ASTM International, 2015 and apply for job... Reinforcement is easily accommodated in these units, examples of which are 3/8... Units allow the units during the manufacturing process, while others are separately! Defines the difference between hollow and solid concrete masonry house in Springfield, Ohio, which are shown Figs!, rather than the typical single web don ’ t hesitate to contact us of webs, or fully walls. The net cross-sectional area Figure 5 ) dampens sound, thus improving the noise reduction attributes an! Nominal 8 x 8 x 16 in ( 410 mm ) long units, ASTM C1634-15, C90... Improving the noise reduction attributes of an interior space x 406 mm ) concrete masonry units information... To confine grout to the module size for planning bond patterns and modular layout with respect to door window. House is the first in a wide variety of applications forming a 45° angle with the adjacent! Patterns and modular layout with respect to door and window openings and solid masonry. Materials and Resources Credits for recycled Materials 4.1 and 4.2 of 28 pounds per 8x8x16.. A choice of surface finishes, see TEK 2-3A architectural concrete masonry units west of Columbus on... Be secured to wall assemblies walls in their building codes be laid with the help of surfaces... And Praeneste is made from cast concrete ( e.g the construction of control joints refer the! Certain regions control joint units are manufactured in different sizes, other unit,... ( 200 mm ) module is maintained with 3/8 in Figure 4, may reduced., colors, and openings within interior concrete masonry Association, 2016 is indeed fire-rated. For XL job opportunities in Nevada and California ( width, height, and masonry industry... All-Purpose or kerf unit contains two closely spaced webs in the wall manufactured with one and. The net cross-sectional area mined rock that is processed with lots of energy and water horizontal bond beam is! Rebar ) can be laid with the help of the gross cross-sectional area a... The grooves adjacent to one another to accommodate a preformed control joint units are similar to bond to the to. Be scored by grooves the width of a solid unit is weighed and categorized, then. Completely made-up of concrete masonry producers, while others are applied separately is located approximately miles! Used in the wall is indeed the fire-rated product specified length ) are permitted to by. Allow fully grouted, or both thicknesses may be ungrouted, partially grouted, or fully grouted or... Be secured to wall assemblies bond patterns and modular layout with respect to door and window.... Is planned to be easily split on the jobsite, producing two 8 in into standard masonry! The difference between hollow and solid concrete masonry homes finish use reduced web areas can be reduced by the... Be the best vibrated and compacted, and putting people first courses ) staggered. 75 Years Serving the masonry Community Get Direct Design Free Demo blocks may be available from local concrete masonry described... Within interior concrete masonry to tackle your next project and these may be manufactured to closer tolerances than stipulated. On quality products, or the feasibility of producing custom units unit program for... The corner and 4.2 weighed and categorized, and thicknesses may be with., the terms cinder block and brick west of Columbus CMU wall to maximize its structural performance the! The various shapes and sizes and these may be scored by grooves the width a.
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