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CE-405

STRUCTURAL ENGINEERING

Credit Hours (3+0)

Instructor:

Muhammad Haroon

Assistant Professor,

Wah Engineering Colleg, Univ of Wah

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SEISMIC ZONING MAP

OF

PAKISTAN

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Being located close to the collision boundary of the Indian

and Eurasian plates, Pakistan lies in a seismically active

zone. Owing to high population density near seismically

active areas, it is imperative that buildings should withstand

the seismic hazard to which these may be exposed during

their life time.

OVERVIEW

Seismic Zoning map is prepared on a rigorous exercise based

on compilation of geological, tectonic and seismicity data

from Pakistan and its immediate surroundings. Only a brief

account of salient seismotectonic features, seismicity and

methodology adopted for seismic hazard zonation are

mentioned here.

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1. Main Karakoram Thrust

2. Raikot Fault

3. Panjal-Khairabad Thrust

4. Riasi Thrust

5. Salt Range Thrust

6. Bannu Fault

7. Chaman Transform Fault

8. Quetta-Chiltan Fault

9. Pab Fault

10.Allah Bund Fault

11.Hoshab Fault

12.Makran Coastal Fault

Major Faults of Pakistan

Major active faults of Pakistan and surrounding areas that strongly influence

the seismic hazard are listed below:

13.Main Mantle Thrust

14.Main Boundary Thrust

15.Himalayan Frontal Thrust

16.Jhelum Fault

17.Kalabagh Fault

18.Kurram Fault

19.Ornach-Nal Transform Fault

20.Kirthar Fault

21.Kutch Mainland Fault

22.Nagar Parkar Fault

23.Nai Rud Fault

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SEMINAR ACI CODE

After NESPAK 2006

Tirich Mir-Misgar F. MKT

MMT

Panjal T.

MBT

Raisi T. Jhelum F.

Kalabagh F.

SRT

Indus-Kohistan F

Muzafarabad T.

Kurram T.

Waziristan T.

Sulaiman Frontal T.

Kirthar F.

Pab F.

OrnachNal F. MakranSubduction Zone

Chaman F.

Ghazaband T.

Hoshab F.

Hoshab F.

Rann of Kuchh F.

Fault Map of Pakistan

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For seismic sources entire area of Pakistan has been

divided into seventeen area source zones based on their

homogeneous tectonic and seismic characteristics, keeping

in view the geology, tectonics and seismicity of each area

source zone.

Eight area seismic source zones in the northern part of

Pakistan

Hindukush, Pamir, Kohistan, Hazara, Himalayas, Salt Range-

Potwar, Bannu and Punjab.

Nine area source zones in southern part

Suleiman, Sibbi, Kirthar, Kurram-Chaman, Indus plateform,

Rann of Kutch, Cholistan-Thar desert, Chagai and Makran

Source Modeling

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On the basis of PGA values, Pakistan has been divided into five seismic zones in line with UBC97. The boundaries of these zones are defined on the following basis:

Zone 1 0.05 to 0.08g

Zone 2A 0.08 to 0.16g

Zone 2B 0.16 to 0.24g

Zone 3 0.24 to 0.32g

Zone 4 > 0.32g

The seismic zoning map of Pakistan on this basis is shown in Fig. 2.1.

Seismic Zoning

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SEISMIC ZONING MAP OF PAKISTAN

Zone 1 0.05 to 0.08g

Zone 2A 0.08 to 0.16g

Zone 2B 0.16 to 0.24g

Zone 3 0.24 to 0.32g

Zone 4 > 0.32g

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THANK YOU