www.www.buonovino.com

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This is my view and I must confess that I am not an expert in this field. I
would request the experts in the field of Earthquake Engineering to through
some light on this issue.

Thanks

ALOK BHOWMICK

Posted via Email

[Guest]

Scholarly articles for Shear Wall Frame Interaction for Seismic Resistance

Contribution of gypsum wall board to racking resistance ... - by Wolfe - 4 citations
3D seismic analysis of multi-storey wood frame construction - by Ceccotti - 4 citations
Validation of seismic design parameters for wood-frame ... - by Ceccotti - 2 citations

[PDF] Chapter 6
File Format: PDF/Adobe Acrobat - View as HTML
on SIP shear walls, research currently underway regarding timber frame and SIP shear
... 2000) seismic design procedures. � A diaphragm-frame interaction ...
scholar.lib.vt.edu/theses/available/ etd-08142002-232925/unrestricted/Chapter6.PDF - Similar pages
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of soil-foundation-structure interaction with regards to seismic ...
peer.berkeley.edu/Products/ PEERDigests/digests02/rd2002-17.pdf - Similar pages
UCSD - Department of Structural Engineering - GradCourses
... AMES 240) Advanced topics in concrete design, including frame and shear wall
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WBDG: Designing Buildings to Resist Explosive Threats
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UMN CE Faculty - Arturo E. Schultz
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... Seismic resistance of partially-grouted masonry shear wall. ...
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rudra_nevatia[AT]yah... wrote:
Dear Nandini,

Shear wall-frame interaction used to be a hot topic in
60's and 70's. As far as I know, it is hardly an issue
with availability of 3-D analysis software.

There is a caveat though - it is a simple analysis as
long as shear walls are planar. Non-planar shear walls
such as lift cores belong to a different genre.

It will be interesting to know more deails about your
research interest.

Regards,
Rudra Nevatia

PS

A lot of students on this list seem to be looking for
help for their research topics. It might be a good
idea if a method of mentoring could be put in place
on the lines of Eklavya system launched bu Dr. Phatak
of IIT-B.

Same

--- gdevi80[AT]yah... wrote:

[Guest]

Normally, schools are used as shelters in the event of disasters. The
situation in existing Govt
schools are so bad, that most of them are bound to be damaged. Unlike
hospitals which work on 24/265 basis, schools do not work round the clock
and if too many structures are included under SLR, the project will be still
born.

We should create in 1897 region, new shelters of last resort. In New
Orleans, the airport was
used for emergency treatment and air lifting subsequently to more safer
places. In Guwahati and Shillong, near the airport such SLR's should be
built.

We use tented accomodation extensively in post disaster scenerios. Could we
also use trailer
homes for this purpose ? I found huge parks of trailer homes in Florida used
in disaster prone
区域。这没有提供风险甚至在最严厉的intensity of earthquake.
In fact it is very good for elderly persons.

I would request Mr. Barua and others in 1897 region to post a list in SEFI
of SLR's, if any, in that region.

The MP's have a constituency fund and our present PM is elected from Assam.
They should be
cajoled to provide immediate funds for SLR project. Such SLR systems should
not be left to the fancy of Architects as they must have very negligible
torsion.

Can we have a smaller active group to discuss these ideas in a yahoo
discussion group. Those willing may please indicate to me directly.

Posted via Email

[Guest]

Normally, schools are used as shelters in the event of disasters. The
situation in existing Govt
schools are so bad, that most of them are bound to be damaged. Unlike
hospitals which work on 24/265 basis, schools do not work round the
clock
and if too many structures are included under SLR, the project will be
still
born.

We should create in 1897 region, new shelters of last resort. In New
Orleans, the airport was
used for emergency treatment and air lifting subsequently to more safer
places. In Guwahati and Shillong, near the airport such SLR;s should
be
built.

We use tented accomodation extensively in post disaster scenerios. Could
we
also use trailer
homes for this purpose ? I found huge parks of trailer homes in Florida
used
in disaster prone
区域。这没有提供风险甚至在最严厉的intensity of
earthquake.
In fact it is very good for elderly persons.

I would request Mr. Barua and others in 1897 region to post a list in
半岛软件下载
of SLR;s, if any, in that region.

The MP;s have a constituency fund and our present PM is elected from
Assam.
They should be
cajoled to provide immediate funds for SLR project. Such SLR systems
should
not be left to the fancy of Architects as they must have very negligible
torsion.

Can we have a smaller active group to discuss these ideas in a yahoo
discussion group. Those willing may please indicate to me directly.

-------------------------

-------------------------
Message From prof.arc[AT]gma...
Subject: Campaign 1897
Date: 21/11/05
Time: 15:22:45
-------------------------
Dear Mr. Alok Bhowmick,
我非常怀疑是否大scale {for that matter, any}
retro-fitting
would ever take place particularly to privately owned apartments. If the
Govt has to legislate, first of all their own innumerable properties are
in
such a bad shape, they cannot insist on private users. Basically, we
should
pray that the event does not occur during our lifetime. My concern is
that
we should have safer structures of last resort. The first responders
must
survive to implement relief. Definitely, the hospitals should not
collapse.
Let us make a small beginning and hopefully it would catch on even for
private property.
As far as the forces mentioned in IS:1893 is concerned, it bears
absolutely
no relationship to actual values in case mega event occurs in 1897
region.
Hence, IS:1893 should revisit these clauses for SLR systems.
I do not propose any retro-fitting to Bridges over rivers. The
pier/abutment
是非常复杂的系统,涉及水/土壤structure interaction.
We
know very little about the variation of ground motion at adjacent piers.
The
whole design is very approximate.
Same applies for retrofitting of masonry/concrete dams. In order to
assure
the public, retro-fitting in the form of buttresses on the d/s face of
non-overflow sections were carried out at Koyna. The strength hardly
improved. Further, no strengthening could be done for spillway sections.
The
d/s cannot be changed and u/s is not available for construction unless
the
dam could be drained out which was not possible below dead water level.
However, the good thing about these dams is it cannot be 100% damaged,
utmost a opening would be created which could be repaired.
The stilt RCMS buildings could be inexpensively retro-fitted if there is
a
will and pressure to implement it.
Sincerely
ARC

On Mon Nov 21 11:09:40 2005, bsec[AT]tou...
bsec[AT]tou...
wrote:

Dear Prof. ARC / Sefians,

Thanks for initiating a complex design related issues pertaining
to
retrofitting of structures. I think the acceleartion figures
coined by you
requires considerable amount of deliberrations before we can use
them. The
expenditure involved in retrofitting the flock of
;important; building and

bridges is going to be quite significant and therefore the design
acceleration coefficients and the philosophy to be adopted should
be
decided
after some deliberrations.

SEFI is fortunate to have some of the experts (Prof. ARC, Prof
SKJ, Prof.
RNI ...etc.) in the field of earthquake engineering who are very
active in
the forum and and I would feel that with their support, it would
be better
to have a base paper giving guidelines on retrofitting strategies
as a
starting point. (I ofcourse presume that such documents do not
exist and I
would be delighted if any one proves me wrong).

Some of the issues that needs to be kept in mind are :

a) An existing structure needs to be retrofitted for the
;remaining /
balance life; of the structure and not for its ;full
design life;. As an
example, if a structure which is already 50 years old needs to be
retrofitted, we need not take the earthquake forces assuming a
return
period
of 100 years as the structure, even otherwise may not survive that
long.
This aspect can reduce the design acceleration for retrofitting
significantly.

b) For Bridges, I think the only way to make the existing major
bridges
安全
would be i) By improving the restraining features at the bearing
level to
prevent dislodgement of deck and ii) By installing special
hardware
devices
(like anchored elastomeric bearings, dampers, STU;s ...etc.)
to change the

时间/阻尼的特点structure. The
知识库
on the correct application of damping devices is still very
limited in our
country. Since these hardwares are mostly imported and in absence
of any
specific guidelines, they are often accepted as black boxes. There
is
therefore an urgent need to formulate codes and guidelines on the
acceptance
criterias of the damping devices.

Thanks

Alok Bhowmick

-------------------------

-------------------------
Message From ajitkbhattacharyya[AT]yah...
Subject: Campaign 1897
Date: 21/11/05
Time: 18:54:29
-------------------------
Dear Alok,

You have raised an important issue which will test the
ingenuity of proessional Engineers.We are aware of the
large scale presence of ill designed and constructed
structures presently distressed which cannot be
altogether replaced in the near future but to be
retrofitted and rehabilitated.Regarding retrofitting
of Bridges we had some National Seminars where very
important papers were presented in the last few
years.Problems are not unsurmountable.These papers
must be gone through. One must study the completed
works.Even if we need to import some STU;s with the
present state of large no. of MNC;s available the
procurement of latest equipment should not be a
problem if it is tried/planned in advance.I know in
Railways considerable number of Bridges have been
strengthened by Jacketting of Piers, Changing the pier
Caps by Precast Blocks, Replacement of existing
bearings by reinforced Elastemeric ones to reduce
imposed forces.Derailment must be prevented on the
Bridge itself through provision of derailing equipment
in approaches.There is no general solution.Engineer
must develop the most cost -effective lasting
schemes.All this cannot be detailed through this
mail.The position of Multi Storeyed buildings which
are now in a state of unsatisfactory structural
behavior is rather serious in Urban Centres.For
Structural Engineers the situation is challenging and
must be dealt with all expertise and experience.
A stilted framed RCC structure in Bangalore
accomodating costly aparments had to be renovated at
huge cost because of ignorance of architects/
engineers about its behavior in adverse situation.ICJ
had published paper on major failure of framed Multi
Storeyed Structures during badly supervised repair
work.Unfortunately failures with details are not
reported as information to others.
Seniors in the Consulting Engineers office must devote
time with their juniors to ensure final quality
product.

A.K.Bhattacharyya

--- bsec[AT]tou... wrote:

Dear Prof. ARC / Sefians,

Thanks for initiating a complex design related
issues pertaining to
retrofitting of structures. I think the
acceleartion figures coined by you
requires considerable amount of deliberrations
before we can use them. The
expenditure involved in retrofitting the flock of
;important; building and
bridges is going to be quite significant and
therefore the design
acceleration coefficients and the philosophy to be
adopted should be decided
after some deliberrations.

SEFI is fortunate to have some of the experts (Prof.
ARC, Prof SKJ, Prof.
RNI ...etc.) in the field of earthquake engineering
who are very active in
the forum and and I would feel that with their
support, it would be better
to have a base paper giving guidelines on
retrofitting strategies as a
starting point. (I ofcourse presume that such
documents do not exist and I
would be delighted if any one proves me wrong).

Some of the issues that needs to be kept in mind are
:

a) An existing structure needs to be retrofitted for
the ;remaining /
balance life; of the structure and not for its ;full
design life;. As an
example, if a structure which is already 50 years
old needs to be
retrofitted, we need not take the earthquake forces
assuming a return period
of 100 years as the structure, even otherwise may
not survive that long.
This aspect can reduce the design acceleration for
retrofitting
significantly.

b) For Bridges, I think the only way to make the
existing major bridges safe
would be i) By improving the restraining features at
the bearing level to
prevent dislodgement of deck and ii) By installing
special hardware devices
(like anchored elastomeric bearings, dampers, STU;s
...etc.) to change the
时间/阻尼的特点
structure. The knowledge base
on the correct application of damping devices is
still very limited in our
country. Since these hardwares are mostly imported
and in absence of any
specific guidelines, they are often accepted as
black boxes. There is
therefore an urgent need to formulate codes and
guidelines on the acceptance
criterias of the damping devices.

Thanks

Alok Bhowmick

Posted via Email

[Guest]

3.宪法委员会的建筑。- (1) The Central Government shall, by notification in the Official Gazette, constitute, with effect from such date as may be specified in the notification, a Council to be known as the Council of Architecture, which shall be a body corporate, having perpetual succession and a common seal, with power to acquire, hold and dispose of property, both movable and immovable, and to contract, and may by that name sue or be sued.

(2) The Head Officer of the Council shall be at Delhi or at such other place as the Central Government may, by notification in the Official Gazette, specify.

(3) The Council shall consist of the following members, namely :-

(a) five architects possessing recognised qualifications elected by the Indian Institute of Architects from among its members :

(b) two persons nominated by the All India Council for Technical Education established by the Resolution of the Government of India in the late Ministry of Education No.F.16-10/44-E.III, dated the 30th November, 1945;

(c) five person selected from among themselves by heads of architectural institutions in India imparting full-time instruction for recognised qualifications;

(d) the Chief Architects in the Ministries of the Central Government to which the Government business relating to defence and railways has been allotted and the head of the Architectural Organisation in the Central Public Works Department, ex officio;

(e) one person nominated by the Central Government;

(f) an architect from each State nominated by the Government of that State;

(g) two person nominated by the Institution of Engineers (India) from among its members; and

(h) one person nominated by the Institution of Surveyors of India from among its members.

Explanation.-For the purposes of this sub-section,-

(a) " Institution of Engineers (India)" means the Institution of Engineers (India first registered in 1920 under the India Companies Act, 1913 (7 of 1913) and subsequently incorporated by a Royal Charter in 1935.

(b) "Institution of Surveyors of India" means the Institution of Surveyors registered under the Societies Registration Act, 1860 (21 of 1860).

(4) Notwithstanding anything contained in clause (a) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the Indian Institution of Architects, persons referred to in the said clause (a) who are qualified for registration under section 25, and the persons so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

(5) Notwithstanding anything contained in clause (f) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the State Governments concerned, persons referred to in the said clause (f), who are qualified for registration under section 25, and the person so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

now.

Posted via Email

[Guest]

3.宪法委员会的建筑。- (1) The Central Government shall, by notification in the Official Gazette, constitute, with effect from such date as may be specified in the notification, a Council to be known as the Council of Architecture, which shall be a body corporate, having perpetual succession and a common seal, with power to acquire, hold and dispose of property, both movable and immovable, and to contract, and may by that name sue or be sued.

(2) The Head Officer of the Council shall be at Delhi or at such other place as the Central Government may, by notification in the Official Gazette, specify.

(3) The Council shall consist of the following members, namely :-

(a) five architects possessing recognised qualifications elected by the Indian Institute of Architects from among its members :

(b) two persons nominated by the All India Council for Technical Education established by the Resolution of the Government of India in the late Ministry of Education No.F.16-10/44-E.III, dated the 30th November, 1945;

(c) five person selected from among themselves by heads of architectural institutions in India imparting full-time instruction for recognised qualifications;

(d) the Chief Architects in the Ministries of the Central Government to which the Government business relating to defence and railways has been allotted and the head of the Architectural Organisation in the Central Public Works Department, ex officio;

(e) one person nominated by the Central Government;

(f) an architect from each State nominated by the Government of that State;

(g) two person nominated by the Institution of Engineers (India) from among its members; and

(h) one person nominated by the Institution of Surveyors of India from among its members.

Explanation.-For the purposes of this sub-section,-

(a) " Institution of Engineers (India)" means the Institution of Engineers (India first registered in 1920 under the India Companies Act, 1913 (7 of 1913) and subsequently incorporated by a Royal Charter in 1935.

(b) "Institution of Surveyors of India" means the Institution of Surveyors registered under the Societies Registration Act, 1860 (21 of 1860).

(4) Notwithstanding anything contained in clause (a) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the Indian Institution of Architects, persons referred to in the said clause (a) who are qualified for registration under section 25, and the persons so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

(5) Notwithstanding anything contained in clause (f) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the State Governments concerned, persons referred to in the said clause (f), who are qualified for registration under section 25, and the person so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

now.

around

Posted via Email

[Guest]

3.宪法委员会的建筑。- (1) The Central Government shall, by notification in the Official Gazette, constitute, with effect from such date as may be specified in the notification, a Council to be known as the Council of Architecture, which shall be a body corporate, having perpetual succession and a common seal, with power to acquire, hold and dispose of property, both movable and immovable, and to contract, and may by that name sue or be sued.

(2) The Head Officer of the Council shall be at Delhi or at such other place as the Central Government may, by notification in the Official Gazette, specify.

(3) The Council shall consist of the following members, namely :-

(a) five architects possessing recognised qualifications elected by the Indian Institute of Architects from among its members :

(b) two persons nominated by the All India Council for Technical Education established by the Resolution of the Government of India in the late Ministry of Education No.F.16-10/44-E.III, dated the 30th November, 1945;

(c) five person selected from among themselves by heads of architectural institutions in India imparting full-time instruction for recognised qualifications;

(d) the Chief Architects in the Ministries of the Central Government to which the Government business relating to defence and railways has been allotted and the head of the Architectural Organisation in the Central Public Works Department, ex officio;

(e) one person nominated by the Central Government;

(f) an architect from each State nominated by the Government of that State;

(g) two person nominated by the Institution of Engineers (India) from among its members; and

(h) one person nominated by the Institution of Surveyors of India from among its members.

Explanation.-For the purposes of this sub-section,-

(a) " Institution of Engineers (India)" means the Institution of Engineers (India first registered in 1920 under the India Companies Act, 1913 (7 of 1913) and subsequently incorporated by a Royal Charter in 1935.

(b) "Institution of Surveyors of India" means the Institution of Surveyors registered under the Societies Registration Act, 1860 (21 of 1860).

(4) Notwithstanding anything contained in clause (a) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the Indian Institution of Architects, persons referred to in the said clause (a) who are qualified for registration under section 25, and the persons so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

(5) Notwithstanding anything contained in clause (f) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the State Governments concerned, persons referred to in the said clause (f), who are qualified for registration under section 25, and the person so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

now.

around

around

Posted via Email

[Guest]

3.宪法委员会的建筑。- (1) The Central Government shall, by notification in the Official Gazette, constitute, with effect from such date as may be specified in the notification, a Council to be known as the Council of Architecture, which shall be a body corporate, having perpetual succession and a common seal, with power to acquire, hold and dispose of property, both movable and immovable, and to contract, and may by that name sue or be sued.

(2) The Head Officer of the Council shall be at Delhi or at such other place as the Central Government may, by notification in the Official Gazette, specify.

(3) The Council shall consist of the following members, namely :-

(a) five architects possessing recognised qualifications elected by the Indian Institute of Architects from among its members :

(b) two persons nominated by the All India Council for Technical Education established by the Resolution of the Government of India in the late Ministry of Education No.F.16-10/44-E.III, dated the 30th November, 1945;

(c) five person selected from among themselves by heads of architectural institutions in India imparting full-time instruction for recognised qualifications;

(d) the Chief Architects in the Ministries of the Central Government to which the Government business relating to defence and railways has been allotted and the head of the Architectural Organisation in the Central Public Works Department, ex officio;

(e) one person nominated by the Central Government;

(f) an architect from each State nominated by the Government of that State;

(g) two person nominated by the Institution of Engineers (India) from among its members; and

(h) one person nominated by the Institution of Surveyors of India from among its members.

Explanation.-For the purposes of this sub-section,-

(a) " Institution of Engineers (India)" means the Institution of Engineers (India first registered in 1920 under the India Companies Act, 1913 (7 of 1913) and subsequently incorporated by a Royal Charter in 1935.

(b) "Institution of Surveyors of India" means the Institution of Surveyors registered under the Societies Registration Act, 1860 (21 of 1860).

(4) Notwithstanding anything contained in clause (a) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the Indian Institution of Architects, persons referred to in the said clause (a) who are qualified for registration under section 25, and the persons so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

(5) Notwithstanding anything contained in clause (f) of sub-section (3), the Central Government may, pending the preparation of the register, nominate to the first Council, in consultation with the State Governments concerned, persons referred to in the said clause (f), who are qualified for registration under section 25, and the person so nominated shall hold officer for such period as the Central Government may, by notification in the Official Gazette, specify.

now.

around

around

around

Posted via Email