phase i conservation works former british residency...

Restoration of Darbar Hall at University College for Women, Koti, Hyderabad Phase I

Phase I Conservation

Works

Former British Residency,

University College for

Women, Koti, Hyderabad

Progress Report

July 2016

WORLD

MONUMENTS

FUND


CONSULTANTS

Ar. Ravi Gundu Rao

Ar. B. Sarath Chandra

Ar. Anuradha Naik

Ar. Tapan Mittal Deshpande

Ar. Apoorva Pillay

Ar. Anshul Rawat

JEERNODHAR CONSERAVTORS PVT. LTD.

Nilesh Thakkar

Gautam Ramesh

WORLD

MONUMENTS

FUND

STATE ARCHAEOLOGY DEPARTMENT

N.R. Visalatchy, Director

Raheem Shah, Deputy Director

OSMANIA UNIVERSITY

UNIVERSITY COLLEGE FOR WOMEN

Prof. B.T. Seetha, Principal

Prof. Y.L. Srinivas, PRO

BUILDING DIVISION

B.L.N. Reddy, Consulting Chief Engineer

Srinivas Reddy, Executive Engineer (EE)

V. Devapriya, Dy EE

D. Anjali, AEE

PROJECT TEAM


Items of Work

1. Clearance & Dismantling works

Item No. 16 Dismantling madras terrace in western balcony

Item No. 11 Clean removal of old plaster from walls

2. Structural consolidation

Item No. 5 Restoration of wooden structural system in Darbar hall balcony

Item No. 23 Restoration of old deteriorated gutter channel on terrace

Item No. 24 Provision of teakwood for structural restoration

Item No. 46 Recycling old wood dismantled from the building for restoration purposes

3. Consolidation works

Item No. 39 Stitching of cracks using stone lintels (50x150x1000mm)

Item No. 40 Stitching of cracks using SS clippings in western balcony

4. Protection & Finishing works

Item No. 26 Providing Anti termite treatment as per IS 6315

Item No. 30 Providing and applying steel protection coating

Item No. 35 Plastering with Lime Surkhi plaster of thickness 25mm including preparation of mortar

Item No. 36 Additional thickness of 20mm of Lime plaster as per the original thickness of the plaster

Restoration of Darbar Hall at University College for Women, Koti, Hyderabad Phase I BAR CHART SHOWING STATUS OF WORK

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Finished items of work


STAGES OF WORK → 2

After the structural consolidation of the arch .Traditional lime plaster (1:3) in the room of roughplaster of 1.5” thickness applied after.

LOWER GROUND FLOOR


STRUCTURAL CONSOLIDATION: CRACK STITCHING

Mason putting in the SS clip

CONSOLIDATION: LIME PLASTERING

The south eastern Basement room had majorcracks in the arch. This was addressed bystitching using SS clipping rod which has a12mm dia. and is 2’ long. The rods are appliedwith a layer of anti-corrosive paint. The ends ofthe rod are bent 6’’ each to be inserted into themasonry.


CONSOLIDATION: LIME PLASTERING

LOWER GROUND FLOOR


Traditional lime plaster(1:3) 1 inch thick on thecircular staircase walls afterthe careful removal of olddecayed plaster.



Duration of work: 1 weekStatus: ongoing

STRUCTURAL CONSOLIDATION- CRACK OPENING


UPPER GROUND FLOOR

Removing theplaster inUGSER toassess thecracks in themasonry.

• The cracks wereconsolidated byremoving theplaster.

• Inserting granitelintels(50mmx150mmx1000mm) in thecracks.

• At an interval of1-1.2m to ensurethat there’s nofurther growthof crack.

Crackstitching inthe billiardsroom.Usinggranitestone lintel



Duration of work: 2 daysStatus: completed

WESTERN YARD

INSPECTION: BUILDING FOUNDATION

The earth on the north west cornerof western balcony, was excavatedto establish the original ground leveland to examine the foundation

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A trench of 0.9m X 1.8m X1.8m was dug adjacent to thewall of western balcony.The excavation exposed theoriginal ground level andfoundation.A cast iron pipe was alsodiscovered near the northwest corner of the balcony.

Restoration of Darbar Hall at University College for Women, Koti, Hyderabad Phase I FIRST FLOOR


Starting of work: 2.07.2016Status: complete

2

After replacing the wooden structural member the new wooden planks(1” thick)were relayed on the balcony as the older ones were decayedand deteriorated.

STRUCTURAL CONSOLIDATION- DARBAR HALL BALCONY

The old plankswere reused infront of theentrances toadjacent andopenings to thebalcony, otherarea of thebalcony wereredone using thenew wood of 1inch thickness

Faulty and decayedstructural woodenmembers werereplaced wherevernecessary.Black japan wasapplied to the portionembedded into thewall.

Relayed old wood at the entrance

Restoration of Darbar Hall at University College for Women, Koti, Hyderabad Phase I FIRST FLOOR

STRUCTURAL CONSOLIDATION- CIRCULAR BALCONY

STAGES OF WORK → 1 2

The decayed rafters in the circular balcony were replace bynew wood. Matching the size and joinery details of the olderwood (4” X 6”) The rafters were inserted inside the wall till itsentire thickness, i.e. 3 feet.

The new and reused wood in the balcony is treated withanti-termite solution the portion of the rafter inside thewall is painted with black japan.

Status: ongoing

The joints on the circular balcony were strengthened using SS L- shaped plates, after which the new wooden planks were re-laid on the balcony screwing them to the rafters. Wooden strips were used along the circular balcony to give it a circular look.



The red oxide flooring of western balcony wasremoved exposing deteriorated madras terrace. Theexposed madras terrace has cracks and the rafterwere deteriorated.

Status: ongoing

Cracks and decayed wooden member in the terrace.

STRUCTURAL CONSOLIDATION- CIRCULAR BALCONY

FIRST FLOOR

The load on the madrasterrace was kept for aperiod of 1 weak.

Deteriorated wooden rafters

Area under major distress in the western balcony

To examine the strength ofmadras terrace roof a uniformload of 400 kg was put on thecritical area of the terrace. Theload on the madras terrace waskept for a period of 1 week.



A groove was made in thee wall adjacent to the gutterchannel to insert the lead sheet, in order to prevent anywater percolation along the edges of the lead sheetadjacent to the wall

After inserting the lead sheet in the groove the jointswould be soldered and sealed with another piece of leadStarting of work: 05.07.2016

Status: On-going

TERRACE

STRUCTURAL CONSOLIDATION- GUTTER



The skylight in the dome was inspected. Thewood along the lining of the opening wasdeteriorated due to moisture ingress, whichwas removed carefully.After removing the wooden pieces it wasfound that the dome had wooden structuralsystem with a layer of madras terrace aboveit.The wood inside the dome is proposed to beexamined using endoscopy.

Starting of work: 20.07.2016Status: ongoing

TERRACE

CONDITION ASSESSMENT: DOME SKYLIGHT

Decayed wooden members inside the dome

New wooden pieces were installed (temporarily) toprevent any further damage in the wooden membersof the dome

Wooden tie beams

wooden ribs

phase i conservation works former british residency...

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