ABSTRACT
RESOURCES – MATERIALS All coats applied off site except as noted The external environment has been taken as Inland ‘B’ Exposed.
PROTECTIVE SYSTEM
Galvanizing to BS EN ISO 1461; apply protective coatings comprising: 1st coat: Mordant T wash; 2nd coat: Zinc rich epoxy primer; 3rd coat: Zinc phosphate, CR/Alkyd Undercoat; 4th coat; MIO CR Undercoat – on site externally; 5th coat: CR coloured finish – on site externally To metal parapets and fencing, lighting columns, brackets
by brush or airless spray to dry film thickness 200microns 0.20 13.71 3.19 20.31 m2 37.21
Blast clean to BS 7079 (surface preparation); apply protective coatings comprising: 1st coat: Zinc Chromate, Red Oxide Blast Primer; 2nd coat: Zinc Phosphate, Epoxy Ester Undercoat; 3rd coat: MIO Undercoat; 4th coat: MIO coloured finish – on site externally To subsiduary steelwork, interior finishes
By brush or airless spray to dry film thickness 175microns 0.15 10.28 2.40 15.30 m2 27.98
hours £ £ £ rate £
Blast clean to BS 7079 (surface preparation); apply metal coating of aluminium spray at works; apply protective coatings comprising: 1st coat: Zinc Chromate Etch Primer (2 pack); 2nd coat: Zinc Phosphate, CR/Aalkyd Undercoat; 3rd coat: Zinc Phosphate, CR/alkyd Undercoat; 4th coat: MIO CR Undercoat; 5th coat: CR finish – on site externally To main steel members
By brush or airless spray to dry film thickness 250microns 0.18 12.34 2.87 16.95 m2 32.16
Blast clean to BS 7079 (second quality surface preparation); remove all surface defects to BS EN10025; apply protective coatings comprising: 1 st coat: Zinc rich primer (2 pack); 2nd coat: Epoxy High Build M10 (2 pack); 3rd coat: Polyurethane Undercoat (2 pack) – on site internally; 4th coat: Finish coat polyurethane (2 pack) – on site externally To internal steel members
By brush or airless spray 0.15 10.28 2.40 23.31 m2 35.99
ALTERNATIVE SURFACE TREATMENTS Galvanizing (Hot dip) to BS EN ISO 1461, assuming average depth 20m2 per tonne of steel – – – – m2 15.30 Shot blasting (at works) – – – – m2 3.06 Grit blasting (at works) – – – – m2 4.44 Sand blasting (at works) – – – – m2 6.63 Shot blasting (on site) – – – – m2 4.33 Grit blasting (on site) – – – – m2 6.27 Sand blasting (on site) – – – – m2 9.33
