Volume-IF - JantERmantER

OCPL-K9A01
For movement of personnel supervising the work a seperete hoist
must be arranged for.
17. The system being operative round the clock it is obligatory to have
adequate lighting arrangement both on various platform levels as well
as on ground below. Arrangement has to be made for facilitating
continuous upward movement of the entire system alongwith sllpform,
18. Winches for lifting men and material and mixers, if located within
unnsafe area around chimney, should be protected by adequate
shelter from possible damage.
19. Proper tele-communication system has to be established between
the personnel working on top of Chimney and control room below,
20. A small laboratory should be maintained at site for testing different
materials like cement. coarse and fine aggregates, A cube testing ­
machine may also be installed at site for getting quick feed back
results.
Apart -from using ,plumb bobs, level and theodolite Instruments for
survey purpose arrangement should also be kept for lasers,
21. In case of interruption in the course of Slipping of formwork following
measures should be taken :
. a) Provision of a key and additional reinforcement at the Junction
of new and old concrate,
b) Slipforrn system should be brought up freely to have a
minimum overlap of 100 mm or so oyer previously cast
concrete.
c) Washing of old c:oncrate surface with compressed air and
, water jet and thereafter pouring a layer of neat cement grout.
d) Clearing of shuttering panels of loose materials, concrate etc.
by compressed air and· applying a coat of epoxy paint, if felt
necessary' by. Engineer. . _ .
- e) Neatly finishing the interface of old or new 90ncrate as soon as
It comes out of shuller panel.
22, It is preferable to suspend the construction work und~r high wind
condition,
23.'
It is of utmost importance that for effective impiamentatlon of this
system an Engineer fully conversant with Slipform technique with
enough experiern:e In planning and control of formwork should be In
overall command of the site and he should be ably supported by well
trained mid IeVeisupervisory staff, &killed workers and operators.
(PCA.CD-003,S805CSA24,doc.doc) V.U-02lS-XXIV: 22