Volume-IF - JantERmantER

DCPL-K4A02
2.2.3 Aluminium Structural Glazing
Providing and fixing of barriered semi unitised structural glazing system at
all levels through designing and selection of mullion and transoms profiles
anodised (15 to 20 micron) or powder coated (50 to 70 micron), selected for
their fixing on the structure depending on the structural conditions, functional,
statistical requirement and should withstand the wind load criteria as per IS-875
(part - III) 1987. System should provide proper rebate areas for air pressure
compensation / water drainage at required stages. Double insulated hard
coated toughened glass consist of 6mm outer single safety glass, 12mm inter
space and 6mm inner clear glass panel glued onto the glass glazing frame
profile selected according to the vision / spandrel panel (Aluminium Composite
Panels) requirement with DC 995 structural sealant. Proper supporting element
should be provided for taking care of the respective infill load and reliving in
case of the glass bonding failure. ( The profile sections shall be Hindalco -
Alupuram unit, HYDRO product or equivalent). Floor to floor height would be
4.2m approx and width of glazing supporting frame would be 1.0m approx.
2.3.0 Shop Coat or Paint
The shop paint for steel doors, windows etc. shall be best lead or zinc
chromate primer paint from approved manufacturer. All surfaces shall be
thoroughly cleaned of rust, grease, loose mill scales etc. and given one coat of
shop paint. Portions like mullions, transoms etc. which will be inaccessible
after assembly of units shall be given an extra coat of paint before assembly.
All steel doors, windows, etc. shall be hot dip galvanised to give a coating
weight of 1-1/2 - 2 oz. per sft. One coat zinc chromate primer coat shall then
be applied as shop paint.
Portions of aluminium frame which come in contact with masonry construction,
shall, before shipment from workshop, be protected with a heavy coat of alkali
paint. Aluminium coming in contact with other incompatible metals shall be
coated with zinc chromate primer.
2.4.0 Handling & Storage of Fabricated Material
All metal doors, windows, etc. shall be packed and crated properly before
despatch, to ensure that there will be no damage to the fabricated materials.
Loading into wagons and trucks shall be done with all care to ensure safe
arrival of materials at site in undamaged condition.
When taking delivery of items supplied by Owner, the Contractor shall satisfy
himself that the items supplied are upto the specified standard. Any defect
detected shall promptly be brought to the notice of the Engineer.
All metal doors, windows etc. shall be stored under cover in a way to prevent
damage or distortion. Special care shall be taken to prevent staining of
aluminium products by rust, mortar etc.
(PCA.775.S034sc14) V.II-D2/S-XIV : 5