Earthquake topic

1. A REPORT ON 20TH
EARTHQUAKE DAY
EXHIBITION.
PURBANCHAL UNIVERSITY
KHWOPA ENGINEERING COLLEGE
An Undertaking of Bhaktapur Municipality
Libali-2 , Bhaktapur

2. .RaniPokhari.
Built in 1727 BS by Pratap Malla, opens twice in a
year.
Made up of timber, brick, mud & raw materials available
at that time.
RCC controversy: use of rcc in renovation will throw it out
of UNESCO site, against Ancient Monument Act but govt &
Kathmandu metropolitian city forcing to modernize and earn
Incorporated revenue.
Majority public, dept of archaeology,activists favour renovation
in traditional way restoring archaeological & historic value.

3. Ranipokhari
Damaged past earthquake 2015 due to improper use of
RCC and mismatch during previous renovations.
Challenges: Timber as 12 ft tall scarce timber needed
traditional materials, skills and old techniques,
maintaining original shape & size as per DOA.
Risk of damage in future earthquake if construction in
Traditional method is done but renovations on time will
make structures earthquake resistant.

4. Nyatapola Mandir ( Pagoda style five storey
Mandir ) – Taumadhi Square, Bhaktapur.
Built by Late King Bhupatindra Malla from 1702 to 1703
in less than 5 months.
30 m high, wider base, symmetrically balanced structure.
Made up of timber, stone, brick & raw materials of that
time.
Survived from 1934 Nepal-Bihar earthquake, 2015
Earthquake.
Larger roofs at bottom & slightly smaller roofs as height increases.
Every storey oscillate in opposite direction & keep c.g almost
constant during earthquake.

5. .Liquefaction
Water saturated sediments temporarily loses strength
& acts as heavy viscous fluid in response to strong ground
Shaking during earthquake.
Around 200 Hospitals in liquefaction zones in valley &
May suffer from severe damage in future earthquake.
Past earthquake April 2015, significant liquefaction in
Liquefiable soils in valley.
Liquefaction hazard map by Department of Mines &
Geology, UNDP/MOHPP Survey 1993 should be followed &
Human settlement, infrastructures should be avoided in
these Zones.

6. .Earthquake Safety Table .
Based on triangle life of earthquake.
Safe, Durable, high impact resistance, low cost & long
Term.
Consist of fuse, columns to bear the load.
60% load energy loss in fuse & 40% in column.
Necessary things like first aid kit,packaged foods,vital
documents, medications etc. can be stored.

7. .Tuned Mass Damper
Huge concrete blocks mounted in upper floors of
the building.
During earthquake if building oscillate excessively
It may fall structurally.
 To counteract this movement tuned mass damper is
used.
Move in opposition to the resonance frequency
Oscillations of the structure.
Use of concept of simple pendulum.

8. Presented By:Thank you
 Niran Gorkhali
 Nitesh Wagle
 Pawan Dhumre
 Prabin Karna
 Pranish Suwal
 Prashant Acharya
 Prinesh Maharjan
 Purushottam Chaulagain