On Bonds j1l43

Types of bond Presented

by :(a)Kajal Vaidya (b)Kalyani Nandekar

Guided

By Gandhi Sir

Content Introduction Field

test on brick Technical used in brick masonry Types of bond Difference between english and flemish bond

INTRODUCTION  Masonry Construction of building units bonded together with mortar.

 Brick masonry Construction of brick units bonded together with mortar.

Field test on brick Compressive

strength test Water Absorption test Efflorescense test Hardness test Size, Shape and Color  test Soundness test Structure test

Technical used in brick masonry • • • • •

Header Stretcher Course Header course Stretcher course

• Header Brick which is laid with its length perpendicular to the face of the wall.

Header

• Stretcher Full brick which is laid with its length parallel to the face of the wall. Stretcher

• Course Horizontal layer of brick.

Cours e

• Header course Course of brick work fully composed of header

•

Stretcher course

Course of brick work fully composed of stretchers.

Types of bond  

English bond Flemish bond 1. Single flemish bond 2. Double flemish bond

English Bond In general practice this type of bond is used. • It consists of alternate courses of headers and stretchers . • Considered as strongest bond in brick work • For breaking vertical ts queen closer is placed after first header •

Header course Stretchers course

Isometric view of english bond

Flemish bond • Each

course consists alternate headers and stretchers. • Not as strong as English bond. • Alternate course starts with a header at the corner. • For breaking of vertical ts , closers are inserted in alternate courses next to the quoin header.

Head er Stretch er

Isometric bond of flemish bond

Single Flemish Bond: The bond provided in a wall with Flemish bond in facing and English bond in backing is called "Single Flemish bond" or "Cross bond".  This bond combines the advantages of both English and Flemish bonds and simultaneously eliminates their

Double Flemish Bond:The bond in which headers and stretchers are laid alternately in each course, both in the face and back of the wall, is called Double Flemish Bond.

Sr No .

English Bonds

Flemish bond

1

This bond consists of headers and stretchers laid in alternative courses.

This bond consists of headers and stretchers laid alternatively in each course.

2

It is strongest of all the bonds.

It is less strong for walls having thickness more than 13 ½ inches.

3

It provides rough appearance especially for one brick thick walls.

It provides good appearance for all thickness of walls.

4

There are no noticeable continuous vertical ts in the structure built in this bond.

There are partly continuous vertical ts in the structure built in this bond.

5

Much attention is not required in providing this bond.

Special attention is required in providing this bond.

6

Progress of work is more.

Progress of work is less.

7

It is costly because the use of brick bats is It is economical because brick bats are not allowed. allowed for forming this bind.