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PAINTING AND DECORATION

(2a)

(1)Single scaffolding
(2)Double scaffolding
(3)Cantilever scaffolding
(4)Suspended scaffolding
(5)Trestle scaffolding
(6)Steel scaffolding
(7)Patented scaffolding

(2b)
(i)Always ensure that you are inspecting scaffolding thoroughly before using it

(ii)Scaffolding structures need to be constantly maintained and inspected in order to retain their structural integrity and safety.

(iii)Scaffolding structures are notoriously cramped, so it is extremely important that tools are not left out and are put up neatly on the scaffolding itself.

(iv)Scaffolding must be perfectly level in order to minimize the risk that workers can fall off and be injured or killed.

(Number 6)

(6a)
(I)mold killing primer
(II) fine surface primer
(III) kilz adhension primer
(iv)Rust oleum magnetic primer
(v)Rusty metal primer
(vi)multi purpose primer

(6b)
(i) pre-treatment:
A pre treatment is something which is applied to a feed in order to make a process or stage more effective. A typical pretreatment prior to metal stripping usually includes a soak in a hot alkaline cleaner followed by thorough rinsing and cathodic activation in an electrocleaner.

(ii) galvanizing:
galvanizing is the process of applying a protective zinc coating to steel or iron , to prevent rusting . The most common method is hot-dip galvanizing, in which the parts are submerged in a bath of molten zinc.

(iii)Mill scale:
Mill scale is a flaky surface that can be found on iron oxides and metals that have been hot rolled. Mill scale forms on exterior surfaces of sheets and plates as they are being manufactured through rolling steel billets and hot iron into rolling mills.

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