PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
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In suspending the work at the end of the day, the plaster shall be cut clean to the<br />
line both horizontally and vertically. When recommencing the plastering, the edge<br />
of the old work shall be scraped clean and wetted with lime putty or cement slurry<br />
before plaster is applied to the adjacent area. Partially set and dried mortar shall not<br />
be re tempered for use.<br />
Cleaning of completion:<br />
On completion, all work affected by plastering and pointing shall be left clean,<br />
special care shall be taken when removing any set mortar form glass and joinery,<br />
etc. to avoid damaging their surface.<br />
10.6 One coat plaster work.<br />
Mortar shall be firmly applied to the masonry walls and well pressed into the joints<br />
and forcing it into surface depressions to obtain a permanent bond. The plaster<br />
shall be laid in a little more than the required thickness and levelled with a wooden<br />
float. On concrete walls, rendering shall be dashed on to roughened surface to<br />
ensure adequate bond. The dashing of rendering coat shall be done using a strong<br />
whipping motion at right angles to the face of walls. The surface shall be finished<br />
even and fair. Unless indicated to be finished even and smooth.<br />
10.7 Two coat plaster work.<br />
First Coat:<br />
The first coat of the specified thickness shall be applied in a manner similar to one<br />
coat plasterwork. Before the first coat hardens, the surface of the cement and<br />
cement lime plasters shall be scored to provide key for second coat. In case of lime<br />
plasters the surface shall be beaten with edges of wooden thapies and close dents<br />
shall be made on the surface, to serve as a key to the subsequent coat. The<br />
rendering coat shall be kept damp for atleast two days, it shall be allowed to become<br />
thoroughly dry.<br />
Second Coat:<br />
Before starting to apply second coat, the surface of the rendering coat shall be<br />
damped evenly. The second coat shall be completed to the specified thickness in<br />
exactly the same manner as the one coat plaster work.<br />
GTS : General Technical Specification. Page 83
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