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4 wythe brick wall thickness

Multiwythe Concrete Masonry Walls - Ncm

1-1.1 Solid brick of clay or shale. 6 4.9 3.8 2.7 1-1.2 Hollow brick, not filled. 5.0 4.3 3.4 2.3 1-1.3 Hollow brick unit wall, grout or filled with perlite vermiculite or expanded shale aggregate. 6.6 5.5 4.4 3.0 1-2.1 4 nominal thick units at least 75 percent solid backed with hat-shaped metal furring channel 3/4 thick formed from 0.021. A brick laid on its end so that its longest dimension is parallel to the vertical axis of the face of the wall. Stretcher. A masonry unit laid flat with its longest dimension parallel to the face of the wall. Wythe. A continuous vertical section or thickness of masonry 4 or greater. Brick Walls QUIKRETE® Mortar Mix or Mason Mix Bricks Chalk lin The thickness of load bearing masonry wall should be at least 304.8 mm (1 ft.) thick for maximum wall height of 10.668m (35 ft.). Moreover, the thickness of masonry wall need to be increased by 101.6 mm (4in.) for each successive 10.668m (35 ft.) height or fractions of this height measured from the top of the masonry wall A common detail for masonry walls containing a collar joint is i n d i c a t e d i n F i g u r e 1 . T h i s w a l l system consists of a 4-inch nomi-nal outer wythe of masonry and either a 4- or an 8-inch nominal in-ner wythe of masonry. The overall wall thickness is 8 or 12 inches, and the remaining space is a 3⁄ 4 - i n c h - wide collar.

The facing and backing of multiple-wythe masonry walls shall be bonded in accordance with Section R606.13.1, R606.13.2 or R606.13.3. In cavity walls, neither the facing nor the backing shall be less than 3 inches (76 mm) nominal in thickness and the cavity shall be not more than 4 inches (102 mm) nominal in width Brick masonry walls consist of uniformly shaped and sized bricks that are laid in courses with mortar joints. A singular vertical section of brick masonry ,one unit in thickness, is referred to as a wythe. Bricks can be of various colors and hardnesses. They may be glazed, pressed or molded, or customized to suit the design requirements for WYTHE is the portion of a wall which is one masonry unit in thickness. A collar joint is not considered a wythe. With 'wythe' as a defined term, the specific application to 'brick masonry' was removed resulting in the following language: [5] 2405A (c).4.C Masonry Core TestsOne-half of the number of cores taken shall be tested in shear Your sketch looks a little out of scale since a tradition double wythe brick wall is made up of 2 - 3-5/8 wythes with a 3/8 joint giving a 7 5/8 overall thickness and is about the width of a 2x8 laid flat

Thickness of Walls Masonry - YouTub

Single-Wythe Walls. Single-wythe masonry walls can be considered a variation of a barrier wall system. Single-wythe brick masonry construction can be designed with either solid or hollow units. In single-wythe walls, the masonry wythe usually exceeds the thickness of a nominal 4 in. (102 mm) exterior brick wythe. In addition to th One-half of the wall thickness for multiwythe walls bonded by mortar or grout and wall ties or masonry headers or 2.2. One-half the wythe thickness for single wythe walls, masonry bonded hollow walls, multiwythe walls with open collar joints and veneer walls. 3. The maximum projection of one unit shall not exceed: 3.1 The usual combo of positive masonry attributes are fully pre‐ sent in the double wythe wall. Rot proof, termite proof, cor‐ rosion proof are all standard fare for solid concrete masonry construction. Mold Control Masonry is not a food source for mold and it is not damaged by water We have about 13 inches of 3-wythe brick load-bearing walls. Kristina Beedle | Posted in Energy Efficiency and Durability on April 10, 2012 11:15am. We are not doing any insulation on the brick walls, but are having issues with the building inspector coming up with a framing plan. We live in MN. We have fought the city and won a battle so that. as unreinforced load bearing brick cavity walls. Four wythes of clay brick are separated by a 76 mm (3) uninsulated cavity with an approximate wall thickness of 500 mm (20). The cavity wall is approximately 7.9 m (26') high and was tied together with randomly placed header bricks and sheet metal ties. Bearing on the interior wythes of the cavit

Examples of this type of construction include most clay brick and terracotta brick walls built in the early 20th century. A brick veneer is generally a single wythe wide. One common type of wall construction is made up of two wythes, usually with an outer layer of brick and an inner layer consisting of cinder or concrete blocks In the photo below, AAA-1 Masonry is nearly done rebuilding a four-wythe door jamb and adjacent wall measuring a whopping 17 in width! (The four wythes of brick are most easily seen in the bottom portion of the door jamb.) This construction will last another 100 at least RE: 3 Wythe Brick Wall Removal. concretemasonry (Structural) 16 May 17 19:39. It depends n the bonding pattern of the brick and if the wall is a composite 3 wyth wall or wall made of separate wythes that are not connected by masonry units or a solid collar joint. A properly bonded 3 wythe wall can act as a single solid masonry element

In this case a single wythe 12 inch masonry building in Boston was modeled under two conditions 35% and 50% Relative Humidity. The 35% RH MODEL for the SINGLE WYHTE WALL The first model was a building operating at an interior relative humidity of 35% in the winter, the second model was run at 50%, which is a higher relative humidity than mos • A wythe is a continuous vertical section of masonry one unit in thickness. A wythe may be independent of, or interlocked with, the adjoining wythe(s). A single wythe of brick that is not structural in nature is referred to as a veneer. • A multiple-wythe masonry wall may be composed of a single typ In its most common form, a solid masonry wall consists of an outer layer of brick and an inner layer of brick (a layer of brick is called a 'wythe' in masonry circles). The reason why solid masonry is a more accurate description than solid brick or double brick is because the inner wythe may not be brick NCMA TEK 14-1B Section Properties of Concrete Masonry Walls Based on face shell bedding and minimum dimensions Concrete Masonry Units 19 Section Properties: Section Modulus Grout Spacing Nominal Wythe Thickness (in.), with actual wall thickness below (in.) 4 3.625 6 5.625 8 7.625 10 9.625 12 11.625 Section Modulus (in3/ft) No grout 48 in o.c

• Wall thickness: The three model building codes and CABO prescribe two different minimum requirements for the type of block used for single story buildings. While all four codes prescribe 6-inches as the minimum thickness, CABO and UBC prescribe that the 6-inch block must be of solid masonry or 8-inch thick hollow-core block is required. The. Here are compliance options for above grade, non residential, single wythe CMU walls — a masonry wall, > 8 in. (203 mm) nominal thickness, must have thickness with integral insulation. 2) Walls greater than or equal to 8 in. (203 mm) nomina masonry walls. MASONRY WALL TYPES . Prior to the 1950s, multi-wythe mass . masonry wall systems consisting of solid . masonry for their entire thickness were commonly used. Newer and lighter masonry walls were developed after that time. By the 1980s, masonry cavity walls incorporating . a water management system were widely . used

Calculating masonry's fire resistanc

The thickness of grout or mortar between masonry units and reinforcement shall be not less than 1 / 4 inch (6.4 mm), except that 1 / 4-inch (6.4 mm) bars shall be permitted to be laid in horizontal mortar joints not less than 1 / 2 inch (12.7 mm) thick, and steel wire reinforcement shall be permitted to be laid in horizontal mortar joints not. A - 150 mm (6-inch) nominal hollow concrete masonry units B - 150 mm (6-inch) nominal split-face hollow architectural concrete masonry units C - Multi-wythe wall with either 90 mm (4-inch nominal) clay or concrete brick with 150 mm (6-inch) nominal hollow concrete masonry unit backup 4 Indicates metal jacketed bullets used Fire resistance rating of single Wythe clay masonry wall is computed as per Table-2. The equivalent thickness of clay masonry walls is computed as per the following equation: Te = Vn / LH -> Equation-2. The actual thickness of solidly grouted clay masonry assemblies it equal to the thickness of clay unit 1. The masonry has been certified through the equivalent thickness method contained in Chapter 3 of ACI 216.1 for concrete masonry, Chapter 4 for clay masonry, and Chapter 5 for effects of finish materials. E. Mock-Up Panels: Construct mock -up panels for each typ e of masonry construction of a typical wall for Architect's approval

What is the thickness of one brick wall? - Quor

  1. Where the masonry heater wall thickness is at least 8 inches (203 mm) of solid masonry and the wall thickness of the heat exchange channels is not less than 5 inches (127 mm) of solid masonry, combustible materials shall not be placed within 4 inches (102 mm) of the outside surface of a masonry heater
  2. A Cavity wall is a brick masonry wall having two walls, called skins or leaves of masonry separated by an air space and joined together by metal ties at suitable intervals. A typical cavity wall will be around 250mm (10 inches), whereas a solid brick wall will be around 220mm (8½ inches)
  3. Brick veneer is a decorative element rather than a structural one. It is essentially a single-thickness brick wall (also called a wythe) that is attached to the exterior of a wood, steel, or concrete frame building. This gives it the appearance of being constructed entirely out of brick

How to Decide Thickness of Masonry Walls in Buildings

Multiple-Wythe Masonry UpCode

Eighteen masonry brick walls in total were constructed (nine single and nine double-wythe) with dimensions of 1340 × 440 × 102.5 mm, in a running bond pattern. Medium-scale specimens were built as these are more representative of real walls; this further adds confidence to the test outcomes (i.e. failure modes etc.), see also [23] , [44] , [45] Concrete Masonry Wall Weights, particularly for 4 inch units Wall Weights (psf), ASCE 7-10: Light weight units Concrete Masonry Units 18 Grout Spacing Wythe Thickness (in) 46 8 10 12 Density of Unit: 125 pcf (Normal weight units) No grout 48 in o.c. 40 in o.c. 32 in o.c. 24 in o.c. 16 in o.c. Full Grout Solid Units 26 38 28 33 34 36 39 44 59 60. Brick - A standard unit of building material, made by fashioning clay into rectangular solid blocks, and subjecting them to burning in a kiln. Course - A horizontal row of brick in a wall. Wythe** - is a continuous vertical section of masonry one unit in thickness. [Audel's - 1929] Lap - The distance one brick extends over another • Determine minimum equivalent thickness required of brick unit from tables in the building code or ACI 216.1/ TMS 0216 [Ref. 5] • Specify brick standard, brick size and void area to meet the minimum equivalent thickness requirements • For multi-wythe masonry walls, determine contributions from other wall components such as concrete, concret Partially Grouted Cavity Walls - To be missile impact resistant, double-wythe masonry cavity wall systems must be constructed with a backup wall built of CMU that meet ASTM C90 (minimum thickness of 8 inches), are partially grouted and vertically reinforced at a maximum spacing of 32 inches on-center horizontally with a veneer of utility.

Saxon sized brick Maximum heights / lengths of wall •Rule of Thumb: -Load bearing: Unbraced height or length for a 2 wythe wall (backup + veneer) = 18 x total thickness (backup + veneer) -Non loadbearing: •Interior: Unbraced height or length (single wythe) = 36 x thickness (single wythe) •Exterior: Unbraced height or length (single. usually 2 to 4 inches thinner than double wythe walls and in the world of real estate area is money. Single wythe walls are normally built with architectural units that allow the designer an almost limitless selection of colors and textures In doing a quantity takeoff for 100 square feet of single wythe concrete masonry wall, with a thickness of 8, how many 8x8x16 block would you need and how much mortar would you need? 112.5 units and 10.1 cu ft. If the closure unit of a course does not properly fit in an opening, the mason should Expanded slag or pumice 4.7 4.5 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.7 2.5 2.1 1.9 1.5 A Fire resistance rating between the hourly fi re resistance rating periods listed may be determined by linear in- terpolation based on the equivalent thickness value of the concrete masonry unit

WALL JOINT : A vertical joint parallel to the face of the wall. WALL TIE : A metal fastener which connects wythes of masonry to each other or to other materials. WYTHE : Portion of a wall which is one masonry unit in thickness. 7.2 Materials 7.2.1 General f ′m ′ Compressed fiberglass - 4 per inch - R-14 for 3.5 inches. Comparing Thermal Resistance of Brick and Brick Veneer Walls. As you can see, brick on its own is not the greatest insulator. A common 3.625-inch thick brick does not even reach R-1. Brick homes are typically constructed of two walls with an air space in between for moisture drainage

Double Wythe Brick Wall - Structural engineering general

  1. Single wall layer provides the structure, exterior surface finish, and the interior surface finish. Can be designed as panels, curtain walls, load bearing walls, shear walls, bomb blast walls, fire rated shelter walls and many others. Do not require back up, shelf angles, or perimeter beams, unlike brick veneer. Most economical brick wall type
  2. imum 6 mm (1/4 inch) thickness of mortar between reinforcement and masonry units, except 6 mm (1/4 inch) bars (if any) may be laid in 13 mm (1/2 inch) thick bed joints and 5 mm (0.2 inch) diameter or smaller wire reinforcing may.
  3. The wall is built with 8x8x16 CMU blocks, using 3/8 mortar joint, reinforcement rods and a horizontal joint reinforcement with eye & pintle wall masonry anchors (embedded in the mortar). As with different brick sizes, the depth of the exterior trim and footing or ledge will need to allow adequate depth for the stone plus air space.
  4. al thickness. R1003.10.1 Masonry veneer chimneys. Where masonry is used to veneer a frame chimney, through-flashing and weep holes shall be installed as required by Section R703
  5. imum thickness of unit masonry form shall be at least the thickness of the existing clay tile wythe in which it is placed. 3
  6. The name is self defining. A single brick wall is very simply a wall that is constructed of brick but is only one brick thick. Many brick walls are made with two layers of brick with an airspace between. Some are simply laid with two (or more) lay..

International Building Code Section 2104 International

Material Properties Code - 4.2 VERT. & LATERAL 23 Masonry can have more than one wythe (thickness) Multiwythe walls may be designed for: Composite action or noncomposite action Composite action requires that collar joints be: Crossed by connecting headers, or filled with mortar or grout and connected by ties Code 5.1.4.2 and 8.1.4.2 (ASD. For the URM structures, during the reconnaissance survey, the team observed a range of masonry wall thicknesses, varying from 500 to 750 mm, composed of at least a three-wythe wall (three layers of bricks) filled with mud mortar, as shown in Fig. 3.7A. The façades of traditional buildings are typically made from fire clay bricks with a smooth. Masonry walls may be made of brick, stone, concrete block, cinder block, clay tile or glass block. Walls may be single, double or triple wythe (thickness). Six inch single wythe masonry walls are common on one-story buildings with walls less than 9 feet high. There are four general types of masonry walls. 1. Solid masonry walls

Brick walls can go by many names, including solid masonry, solid brick, double brick, and brick and block. To understand these names, a quick lesson in brick wall construction will suffice. A solid masonry wall usually consists of an outer layer of brick and an inner layer of brick or concrete or cinder block—hence the names A wythe, by definition, is a continuous vertical section of masonry, and is one masonry unit thick. A multiple wythe, then, is more than one vertical section of masonry laid next to one another. A picture is available to clarify. Multiple wythes are utilized in situations when added support, stability or protection is required 4 thick Pass 2 Sieve NR if Group I Soil Below Slab 2 Masonry Walls, General Thickness minimums Masonry Parapet Walls Corbeled Masonry projection Lateral Support Horizontal Spacing Vertical - in Seismic Design Cat. A, B, C Lintels Anchorage Seismic Design Cat. C, D 0 General Design Category C Design Category D 0 R606.2 R606.2.1 R606.2.4 R606.3. 4.9/5 (270 Views . 11 Votes) Brick veneer wall assemblies can attain fire ratings. The combustible wood stud must be protected from fire on each side by noncombustible materials that meet the required fire rating. A 4 in. (100 mm) nominal brick wythe provides a fire rating The exterior walls of the tavern are double wythe brick; they have an outer brick wythe bonded to an inner brick wythe with header courses at every tenth course. The inner brick wythe is nogging infilled between timber studs. The openings have stone lintels and sills (Figure 5). Figure 5 - West Wall Figure 6 - West Wall Figure 6 is looking.

We have about 13 inches of 3-wythe brick load-bearing wall

For a 12' high, 500' long wall with the cross-section. Use 4.34cf/100sf of wall for any mortar (per wythe) that is required for the 4x12 brick and 4.68cf/100sf of wall for any mortar (per wythe) that is required for the 3x12 brick. Also, assume #6 rebar has a weight of 1.502 lbs/lf. Assume only 12' of rebar in the vertical direction Straight Wall (Double Wythe Wall) Exploded View. Assembly View . Step by Step. Step 1. (BIM) of the second brick is flush with the adjacent brick. You can also use a dual head rubber hammer (mallet) to carefully drive down the dovetail shaped legs of the new brick into their female counter parts. Step 4. Finish Layer/Course 1..

In Masonry, what is a Wythe? (with pictures

The two leaves of the cavity wall may be of equal thickness if it a non-load-bearing wall or the internal leaf may be thicker than the external leaf, to meet the structural requirements. Veneered Wall holds up the material. It can be made of brick or stone. The most famous veneered wall is made of brick. The wall is only one wythe thick The Chapter 7 wall systems consist of a single-wythe concrete masonry unit (CMU) wall structure, often composed of split-face block. While many wall system variations may apply to single-wythe CMU wall systems, this chapter focuses on an interior-insulated CMU wall system that has demonstrated successful building enclosure performance within Colorado and southern Wyoming Emco Block is the best and most trusted masonry block manufacturer serving Washington DC, Maryland and Northern Virginia. We supply paving brick, fire brick, flue linings, masonry cement, architectural block, split face block, decorative wall block, concrete wall systems, segmental retaining wall systems, EP Henry products, New Holland products, and much more

Wythe AAA-1 Masonry Chicago Masonry Contractor

  1. appropriately referred to as the exterior masonry wythe and the interior masonry wythe, respectively, in this masonry cavity wall system. The Block ShearTM Connector consists of a Block Plate, a V-TieTM, and an Insulation Support. Individual components are shown in Figures 1, 2 and 3; the assembly is shown in Figure 4; an
  2. What is the thickness of one brick wall? For most standard bricks that would be 215mm. Most of the time in housing we have an outer skin (or wythe in American) half brick wall laid in stretcher bond which would be 102.5mm thick which is the width of the brick
  3. al outer wythe of masonry and either a 4- or an 8-inch no
  4. The thick loadbeaiing barrier walls of yesterday provided all four, but today such walls are uneconomical to build. Since the mid-twentieth century, those monumental walls have been replaced by single-wythe walls of concrete masonry units (CMU) and by brick-veneer walls, in which the thickness of brick is less than 4 in (10 cm)
  5. home - ; face brick - ; Brick Dimensions Guide; BRICK DIMENSIONS GUIDE. Let your imagination run wild! Brick can be made in multiple shapes and sizes, depending on the application. Below is our dimension guide for selecting face bricks.At Belden Brick we offer brick in all sorts of shapes and sizes, ensuring you will find the right one for your home or business

The effective thickness t for nonreinforced solid masonry is the actual wall thickness, except for metal-tied cavity walls. In cavity walls, each wythe is consid ered to act independently, thus producing two different walls. When the cavity is filled with grout, the effective thickness becomes the total wall thickness. Eccentricity Coefficients Masonry veneers can also be attached to poured concrete walls. The veneer wythe is most commonly constructed using units of clay or concrete masonry, bound together by mortar. These veneer masonry units vary from a nominal 2-5/8 to 4 inches in thickness

Spreadsheet for calculating allowable-stress M-N diagram for solid masonry wall 16.67 Ft Wall w/ No. 5 @ 48in (Centered) NOTE BASED ON 1 ft of Wall and Not EFFECTIVE WIDTH total depth, t 7.625 Wall Height, h 16.67 feet f'm, fprimem 2000 Radius of Gyration, r 2.20 in Em 1800000 h/r 90.9 Fb 900.00 Reduction Factor, R 0.57 The thickness of interior walls is dictated by stud width and wall covering. Standard 2-by-4 studs are 3 1/2 inches wide and drywall is 1/2 inch thick, so interior walls are usually 4 1/2 inches thick. Exterior wall thickness depends on siding material. The recommended maximum is 12 inches

Fill wall thickness as per your requirement like a 4.5-inch brick wall ( Partition wall or half brick masonry), 9-inch brick wall (this wall using normal construction work) Also available in mm. As per below picture show a different type of wall size available like 115 mm, 230 mm, 345 mm, 460 mm The Cement-mortar ratio used for brickwork must be between 1:2 & 1:6. For half wall (meaning wall having 4.5 inches of thickness), the cement mortar ratio should be 1:4. While, for 9-inch brickwork, the cement mortar ratio should be 1:6. Cement mortar thickness between sides of brick should be 10 mm or a half inch ered to add load­resisting capacity to the wall system. Anchored brick veneer with steel stud backing consists of a nominal 3 or 4 in. (76 to 102 mm) thick exterior brick wythe mechanically attached to a steel stud backing syste

A wythe is a continuous vertical section of masonry one unit in thickness. A wythe may be independent of, or interlocked with, the adjoining wythe(s). A single wythe of brick that is not structural in nature is referred to as a veneer More commonly, an exterior wythe of standard masonry brick is used in conjunction with a concrete masonry unit (concrete block) weight-bearing system. These units range from 5 5/8 inches (143 mm) in width to 7 5/8 inches (194 mm) in width. In such a system, the total wall thickness would range from 11 1/4 inches (286 mm) to 13 1/4 inches (337 mm)

3 Wythe Brick Wall Removal - Structural engineering

In a standard brick it is 90 mm × 90 mm face. A One-and-a-Half Brick Wall has a thickness equal to the combined length of a full and a half brick. Most interior walls are constructed with 2-by-4 framing, and each 2-by-4 has a nominal width of 3 1/2 inches. Specified 3 dimensions of concrete masonry units are typically /8 in • Use multi-wythe masonry and/or veneer • Apply wall finishes or coverings. Equivalent thickness is considered to be the actual thickness of the concrete masonry unit. Thus all 8-inch and many 6-inch CMU have 4 hour ratings when filled with an approved fill material. Filling Cores Single wythe means that the chimney wall was constructed using a single thickness of brick running in stretcher or long-way for construction of the chimney wall. The significance of this construction is that there is only a single thickness of masonry (brick and mortar) of roughly 4 forming the chimney wall Table 4.1 -Fire resistance of clay masonry walls Material Type Minimum required equivalent thickness for fire resistance , in. A,B,C 1 hr 2 hr 3 hr 4 hr Solid brick of clay or shale D 2.7 3.8 4.9 6.0 Hollow brick or tile of clay or shale, unfilled 2.3 3.4 4.3 5.0 Hollow brick or tile of clay or shale, grouted or filled with materials. Masonry veneer construction consisting of a single-wythe of brick/masonry over a back-up wall system, which gained popularity in the 1950s, is a departure from thicker load-bearing wall construction. These walls accommodate inevitable water penetration through the masonry veneer with a drainage cavity

Masonry vs. Brick Veneer Carson Dunlop Home Inspectio

  1. A wythe is a continuous vertical section of masonry one unit in thickness. A wythe may be independent of, or interlocked with, the adjoining wythe (s). A single wythe of brick that is not structural in nature is referred to as a masonry veneer
  2. Wall Const ruc tion Masonry Insulating Concrete Form Conventional Concrete Form Chapter 6 R606-R610 R611 not more than 4 x thickness not mor e than ½ wall thicknesswythe thickness Residential Code of New York Masonary or Concret
  3. al 4-inch wythe of clay masonry alone provides a one hour fire rating. Fire ratings can be deter
  4. within the chimney, a solid masonry wall (wythe) separation of at least 4 inches should be maintained between adjacent flues. The walls should be bonded to the chimney wall with either ties or masonry mortar. or corrugated metal). The concrete slab must not support the floor system. FIREBOX AND HEARTH All materials used to construct th

General Masonry Construction UpCode

2. UNIT MASONRY2.04 CONCRETE HOLLOW BLOCK • Concrete hollow blocks should be laid on a full bed of mortar with horizontal and vertical joints 10mm (3/8) thick. • Reinforcement for 100mm (4) and 150mm (6) thick wall shall be 10mm vertical bars at 600mm on centers and 10mm horizontal bars every third course the fi re resistance and the equivalent solid thickness of concrete masonry walls, as shown in Table 1. Equivalent thickness is = 4.58 in. (116 mm) Multi-Wythe Wall Assemblies The fi re resistance rating of multi-wythe walls (Figure 2) (1). The following, and Figure 8, provide an example of the recommended wording for horizontal joint reinforcement in single- and multi-wythe masonry walls: Part 2 products. 2.1 Masonry Reinforcing A. Joint Reinforcement, General: ASTM A 961. Interior Walls: Mill galvanized, ASTM A 641 (0.10 ounces per square foot), carbon stee

Hollow bricks are used as single-Wythe walls and designed to act as a variation of a barrier wall, depending on the thickness and mass of the materials acting as an obstacle to water penetration. The single- Wythe wall design is not much good resistant to water penetration as that of drainage wall systems or multi - Wythe barrier wall. A cavity wall is two wythes of masonry, separated by a cavity of varying dimension. The masonry wythes may consist of solid brick, structural clay tile, or concrete masonry units and are bonded together with masonry ties. The cavity (ranging from 2 inches to 4 1/2 inches in width) may or may not contain insulation. Masonry Structural Walls What does wythe mean? A unit of thickness in masonry construction defined by the quantity of masonry units 4 or greater. (noun) That wall has.. Height limit 4 x T Max ½ wall/wythe thickness 1 & 2 fam. D0 Townhouse C, D0 4 Multiple Wythe Masonry Bonding Headers Wall Ties/Reinforcements Patterns R608 R608.1.1 R608.1. Actual wall thickness, t(IN) (3/8 is the grout thickness) Masonry compressive strength The wall DL The wall LL 12 IN 24 IN 2000 PSI 22 KLF 17 KLF . Unit Hollow Hollow Table 5—12-inch (305-mm) Single Wythe Walls, 11/4 in. (32 mm) Face Shells (standard) 5a: Horizontal Section Properties (Masonry Spanning Vertically) Grout spacing (in.