Subject : Building Construction Dr.Jivaraj Mehta Institute Of Technology,Mogar Topics: Different terminology used for Brick masonary Work Subject : Building Construction Name: Enrollment No. Prajapati Bhupendra B. 130820106042 Prajapati Jaydeep R. 130820106044 Prajapati Ketan D. 130820106045 Prajapati Sanjay N. 130820106046

Brick Masonry

Masonry History 20th Century Developments Steel Reinforced Masonry High Strength Mortars High Strength Masonry Units Variety of Sizes, Colors, Textures & Coatings

Masonry - Primary Uses Today Concrete Masonry Units (CMU) Foundation Walls Structural Support Walls (low rise) Backup Walls for Exterior Facing Brick & Stone Facing Materials - Veneers Decorative Walls

Brick Masonry - Uniqueness Fire Resistance Size Durability

Mortar Functions Provides for full bearing Seals between masonry units Adheres / bonds masonry units Aesthetics

Mortar Pre-packaged Color range Testing / Specifications Curing “Shelf” life

Brick Masonry - Sizes and Shapes No standard size Normal coursing - 3 bricks = 8” Larger sizes Custom Shapes & Colors

Brickwork Strength Depends on: Strength of the masonry unit Strength of the mortar

TERMINOLOGY, BONDS AND JOINTS IN BRICK MASONRY Terminology used in laying bricks: Bed joint, Head joint, Collar joint, Wythe, Stretcher, Header, Soldier, Rowlock Structural bonds used during brick laying Running Bond: All courses of brick made of stretchers, with breaking of joints, from one course to the other English Bond: made of alternate courses of stretchers and headers, with breaking of joints Common Bond or American Bond : Made of stretchers courses, with every sixth course being made completely of headers, with breaking of joints Flemish Bond: In the same layer ( or course) stretchers and headers are laid alternatively, with breaking of joints

Basic Brickwork Terminology Head Joint Bed Joint Course - horizontal layer of brick

TERMINOLOGY, BONDS AND JOINTS IN BRICK MASONRY Procedure for building brick walls: (i) Laying of lead (or corner bricks) to establish the wall planes and courses heights - (ii) Bricks in between leads are laid to a line ( a heavy string stretchers taut between line blocks at each lead) Joint Tooling: Required for giving beauty to mortar joints Weathered Joint: Mortar joint has sloped (downwards) edge Concave joint: Joint concave inwards Vee joint: mortar joint is in the form of a V Flush Joint: Mortar joint is flush with the brick surfaces Raked Joint: A large portion of the mortar joint is raked out - Not a safe, impermeable joint Struck Joint: Mortar joint has a sloped (upwards) edge Mortar joints can vary from 1/4” to 1/2” - Usually taken as 3/8”

Masonry Joints Size Joint Tooling Joint Profiles Weathered Concave Vee Flush Racked Concave Struck

TYPES OF BRICK MASONRY WALLS AND STRUCTURES Reinforced Brick Masonry: A reinforced brick masonry wall in constructed with two wythes of brick, 2” to 4” apart, placing the reinforced steel in the cavity and filling the cavity with grout. Grout is a mixture of Portland cement, aggregate and water. Grout must be filled enough to flow readily into the narrow cavity and fill it completely - Two methods are used in building reinforced brick walls Low-lift method: Height of grout filling is not more than 4 feet - Wythes are held together by galvanized steel wire ties at 24” c/c horizontally and 16” c/c vertically. High-lift method: Wall is grouted, one story at a time - Clean out holes are left at the bottom to drive out the debri (from mortar in brick masonry) down with water through the holes - Finally the clean out holes are sealed with a brick and mortar joint.