nbc for presentation

1. Guidelines for Earthquake Resistant
Building Construction: Low Strength
masonry-NBC 203
Training on Nepal National Building Code
1
Er. Debendra Dev Khanal
(M.Sc. In Structural Engineering)
Presented By: Debendra Dev Khanal

2. Objective of this Document
This guideline is prepared in order to raise the seismic
safety of low-strength masonry buildings.
This is intended to be implemented by the owner/builder
with some assistance from the technicians.
This could also act as a basic guideline for architectural
design and construction detailing of Low Strength
Masonry (LSM) buildings.
2
Presented By: Debendra Dev Khanal

3. Applicability
The recommendations set forth in this standard shall be mandatory
for all types of LSM residential buildings to be built throughout
Nepal.
Other occupancy types of LSM buildings shall be designed by
competent professional engineers.
3
Presented By: Debendra Dev

4. Limitations
LSM buildings required to conform to this standard shall not exceed
two stories in height with an additional attic floor.
4
Presented By: Debendra Dev

5. General Requirements for Earthquake Resistance Construction
Proper Site Selection
Appropriate Planning
Good Foundation Resting on a Firm Base
Creating a Box Effect
• Vertical reinforcement
• Horizontal bands well-connected to the vertical reinforcements and embedded
in masonry
• Diagonal bracing (horizontal and vertical)
• Lateral restraints
Better Bonding between Masonry Units
Controlled Size and Location of Openings
Light Construction
5
Presented By: Debendra Dev

6. 6
Materials
Boulder Stones
Quarry stone
Dressed Stones
Stabilized Soil Block
Brick
Mud Mortar
Bamboo
Timber
Presented By: Debendra Dev

7. 7
Selection and Investigation of the Site
Site Investigation Requirements
Site exploration shall be carried out by digging test pits, two as a
minimum, and more if the subsurface soil condition shows a
significant variation in soil type.
Generally, the minimum depth of exploration for a building
covered by this Guideline shall be 2 m. In hilly areas, exploration
up to the depth of sound bed-rock, if it lies shallower than 2 m,
should suffice.
No exploration shall be required if the site is located on rock or on
fluvial terraces (Tar) with boulder beds.
Presented By: Debendra Dev

8. Thank you
8
Presented By: Debendra Dev