Iron Sheet Roofing - GharExpert.pdf

8/20/2019 Iron Sheet Roofing - GharExpert.pdf

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Iron Sheet Roofing

Generally corrugated galvanized iron sheets are extensively adopted as a covering for roofs and sidesof industrial sheds and buildings. These are commonly available in length of 2.5 meter having a widthof 900 mm and 1000 mm. The sheets are available in thickness of 0.63 mm to 1.60 mm. These sheetsare coated with zinc. The sheets are cleaned, bright, free from rust, breakage etc. These should beaccording to IS: 270 class 2. Hooks, bolts, bitumen and steel washer, nuts and other accessoriesshould confirm Indian Standard No.730.

Iron Sheet Roofing - Solid and strong roofing

(This Picture is Contributed by "Sharmishtha Roy")

Layout of Iron Sheet Roofing

The sheets are laid on Purlins with the line of corrugation truly parallel to the side of area to becovered.Each sheet is fixed by means of J or L hooks boltsand nuts are not less than 8 mm.The limpet washer fitted with bitumen washer andnuts are fitted tightly.Holes for hooks bolts etc. are drilled, not punched.

The holes are in the ridge of corrugation, not inthe valley.

The slope of GI sheet roofing is not flatter than1.5.

The slope 1.3 is adopted normally.The sheets are laid at a minimum lap of 15 cm at the ends.Wind tie must be provided on sheets to save it from disaster.Proper ridge and valley gutter are fixed where required.

Raw Material for Iron Sheet Roofing

Galvanized Iron SheetsHookBolts and NutsBitumen and Steel WashersFrame / PurlinsRidge and Hip Cap

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Metal Valleys

Galvanized Iron Sheet: This material consists of sheets of hot-dip galvanized mild steel. Thecorrugations increase bending strength of the sheet in the direction parallel to corrugations but notacross them.

Normally each sheet is manufactured longest in its strong direction. These sheets are nailed up to thetop edges of trusses or rafters to tie the roof and to support roofing material together. The corrugatedgalvanized iron sheets are of the gauge specified. The sheet should be 22-swg and should conform tospecification in all respects.

Hooks: These are galvanized J or L hooks bolts and nuts 8 mm diameter. Its length should be equalto Purlin + 76 mm for single sheet fixing and depth of Purlin +89 mm for two over lapping.

Bolts and Nuts: Bolts and nuts are zinc plated, cross head, complete with square nut. The spacingapart from hook bolts and GI bolt should not exceed 30 cm.

Steel Washers: Steel washers are also called cup washer that are made of metal. These are placedbeneath the nut or joint to relieve friction and prevent leakage or distribute pressure.

Frames/ Purlins: Purlins of specified material or MS rolled section of required site are fixed over principal rafter. The top surface of Purlin should be uniform and plain.

Ridge and Hip Cap: Ridge and Hip cap of GI sheet roof are covered with Ridge and Hip sections of plain GI sheet, 0.6 to 0.8 mm thick and 60 cm overall width in a maximum lap of 20 cm.

Metal Valleys: Metal valley should be of plain GI sheet 1.6 mm thick and 90 cm wide. It is bent todesired shape and be fixed with main roof GI sheet. The lap with GI sheet should not be less than 25cm on either side.


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Glass and Iron -What a look of roofing

(This Picture is Contributed by "Sanjeev Thakur")

Advantages of Iron Sheet Roofing

Iron sheet roofing is economical.It covers more space with less intermediate supports.It has a long life after proper painting.It takes less time for fixing as compared to RCC slab roofing.

Disadvantages of Iron Sheet Roofing

Problem of leakage and rusting.It can not be used for second storey.It is more prone to weather effects.

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6/15

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11/15

iron gets

4 seater wrought iron dining table and chairs

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Bathroom Ventilation through roof

Wrought Iron Bed Design

Rod Iron On CEILING

Wrought Iron Crystal Chandeliers


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Ductile iron pipes

Cast Iron Pipes for Drainage

Cool iron bed

Wrought Iron Sofa and Table

Iron Furniture


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Iron bed

Wrought iron bed

Iron Bed

Iron Porch Swing

Iron door design

Wrought Iron Sofa.......

roof finish

Aluminium Roofing sheet

Roofing sheets

Exterior View with Roofing Shingles

Iron Railing Design

WROUGHT IRON

Bed Sheets for Girls Room

ROOF CEILING

ROOF N FLOOR

Cast Iron Gate

Aluminum Shingles Roofing

2d Front elevation of the house with slanted roof


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Iron Sheet Roofing - GharExpert.pdf

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