Design of Masonry and Timber Structures.pdf

DESIGN of MASONR¥
and
TIMBER STRUCTURE
DESIGN of MASONRY
and
TIMBER STRUCTURE
Prof. Harbhajan Singh
M. Tech(Structures ),MIE
Chartered Engineer(lndia)
Chitkara School of Planning & Architecture
ABHISHEK PUBLICATIONS
CHANDIGARH
All rights reserved. No part of this book may be reproduced in any
form, electronically, in print,photoprint, microfilm or by any other
means without written permission from the publisher.
ISBN:8 1-8247-1 47-8
Copyright: Author
First Edition: 2007
Published by
Abhishek Publications
SCO 57-59, SECTOR-17-C,
CHANDIGARH-16001 7(INDIA)
Ph: 0172-5003768,Fax: 2707562
e-mail: abhpub@
website:
Printed at : Mehra Offset, Darya Ganj, New Delhi
Index
1 Brick Pillar and Brick wall Foundations 1
2 Design of Brick Masonry Pillars and Walls 18
3 Masonry Retaining Walls 33
4 Timber Structures 70
5 Timber Beams 73
6 Flitched Timber Beams 93
7 Timber Columns 105
8 Timber Roof Trusses 129
CHAPTER 1
Brick Pillar and Brick wall Foundations
Foundation:
Foundation is a medi!;l to transfer the load of structure to sub•
soil. Functions of foundation are:-
a) To spread the load on larger area. to avoid over loading of
sub soil.
b) To prevent unequal settlement under ponents
of structure by loading the sub soil by equal load per unit
area.
c) To prepare and provide a level surface to begin building
operations.
d) To provide anchorage to structure to prevent over turning.
Types of Foundations
a) Brick pillars are provided with isolated footings.
b) Brick walls are provided with strip (spread) foundation.
Loads on Foundation
a) Brick pillars :
i) Superimposed load carried by the pillar including selfweight
of pillar above ground level(w).
ii) Self weight of isolated footing and the soil above foundation
concrete( WI)
WI is estimated as 20% of(w).
b) Brick Wall
i) Superimposed load on wall per unit length including