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Phases of Works

Phase I – Flat roof and tiled roof repairs
Phase II – External façade repairs
Phase III – Internal repair works
Phase IV – Toilet block repairs
Phase V – Electrical works
Phase I – Flat roof and tiled roof repairs Fig. 30 Axonometric View of the Fig. 31 Opened Up Roof
Roof Structure
The Trafford pattern asbestos sheet and tarfelt
of the roof was removed as the roof was in poor
condition and was decided to change it to Mangalore
tiled roof for better heat insulation, appearance,
and maintenance. Teakwood boarding was added
by inserting additional teakwood rafters at 3’ c/c.
The flat roof part was recast and waterproofed with
proper slope.
Fig. 32 Flitching of Truss Ends Fig. 33 Laying of Boarding
The ends of the rotten trusses were fletched using
Old Burma Teak wood to prevent it from further
damage. Tar-felt with hot bitumen coating was laid
over the boarding which is the conventional detail.
Valley gutters were finished with lead flashing and
the edge gutters were fixed with new PVC gutters
on the projected roof, an improved detail.

5th floor walls and RCC lintels
Fig. 34 Laying of Tarfelt Fig. 36 The Deteriorated RCC lintel,
The RCC members of the 1950s extension were Columns, Wall Being Reconstructed
in very deteriorated condition and had to be
reconstructed carefully bay by bay after propping
the teakwood trusses.
The existing 9” thick load bearing brick masonry
walls on West side was demolished carefully above
sill and then reconstructed with a new lintel beam
and corbel below the truss and then it was plastered Fig. 35 The deteriorated RCC lintel,
both internally and externally. Columns, Wall Being Reconstructed Fig. 37 Recasting of Slab

CONSERVING THE UNLOVED HERITAGE IN THE REDEVELOPMENT ERA OF MUMBAI – CASE
STUDY: COMMISSARIAT BUILDING, DR. D.N.ROAD, FORT, MUMBAI

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