Volume-IF - JantERmantER

TITLE:
TECHNICAL SPECIFICATION FOR
REINFORCED CONCRETE
CHIMNEY
SPECIFICATION NO. PE-TS-360-620-C001
VOLUME - II B
SECTION - C SUBSECTION : I
REV.NO. 0 DATE 18.09.2010
SHEET
OF
3144 and IS: 3346 a nd/or a s directed by t he Engineer at the Contractor's own cost.
The tests shall be conducted in the presence of the Engineer and the reports of such
testing shall be submitted to the Engineer before application of the material.
12.6 The insulated material shall be protected against weather at all times from delivery up
to completion of work. Insulation material shall not be stacked directly on the
ground. The contractor shall provide covered storage for insulation material
accessories to the satisfaction of the Engineer.
13.0 CONSTRUCTION
13.1 INSULATION
13.1.1 The fixing details shall be as per specification, approved drawings and the directions
of the Engineer.
13.1.2 T he i nsulation s hall be pr ovided i n m ore t han one l ayer and the joints staggered.
Each layer shall be minimum 25 mm thick.
13.1.3 P articular care shall be taken to ensure that all semi rigid resin bonded fibrous slabs
are tightly butted. The insulation shall be tightly secured to the exterior of the liner or
the inner surface or the shell or on and other surface leaving no air gap at the interface
13.1.4 P ins and studs shall be anchored/fixed to the surface receiving insulation at 500 mm
centers maximum horizontally and vertically. Pins and studs shall be minimum 10
gauge and plated. These shall be 25 m m longer than the thickness of insulation.An
alternative arrangement with anchor f asteners i nstead of pins can also be m ade as
approved by the engineer incharge.
13.1.5 The insulation shall be impaled on the studs and secured in place with 63 mm round
or square metal plated speed washers.
13.1.6 20 gauge galvanized wire netting shall be wrapped continuously over external surface
of the insulation. The wire mesh shall be 25 mm hexagonal conforming to IS: 3150.
All joints in the mesh shall be lapped in minimum of 150 mm and tied with 16-gauge
soft annealed wire at 300 mm centers. Lacing will not be permitted.
13.1.7 The insulation shall be fixed after painting the inner surface of the shell with acid and
heat resistant paint.
14.0 COATING S YSTEM O N S TRUCTURAL F RAMING: Acid and heat r esistant
paint as per IS: 158 for surfaces which are not insulated nor protected by galvanising,
high temperature f ormulation for pot entially hot s urfaces m ainly platform framing
system. Two coats of finish paint on two coats of primer is to be applied on complete
framing system other than flues.