Unnatti Methodology and quality procedure.pdf

5 soundnes good clear ringing sound 6 burning no over

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5] Soundnes : Good, clear ringing sound. 6] Burning : No over burnt or under burnt. 7] Strength : Drop from 2' - no. breaking.
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 45 LAB TESTS IS 1237 - 1980 1] Water absorption Average value shall 10% 2] Wet transfer strength Average value 3 N/mm3 3] Resistance to wear a] For general purpose Average wear 2.0 mm Wear on individual specimen 4 mm b] Heavy duty floor tile. Average wear 2.00 mm Individual wear 2.5 mm CERAMIC / GLAZED TILES 1] Size, Quality, Colour As specified. 2] Diagonals Equal. 3] Edges. Unbroken. 4] Evenness in top layer. Smooth & straightness. 5] NO cracks, cavities, holes 6] Corners not broken. 7] Thickness 5 mm 8] Top finishing & glazing. GRANITE / MARBLE / TANDOOR / STONE SLABS 1] Size, Colour, Quality. Should be of uniform colour size & quality. 2] Check for polishing quality & One face should be polished with 4 cutting Sides machine cut. 3] Edges, diagonals. Correct. 4] Performance of top layer. Free from cracks, cavity, holes etc. 5] Uniform thickness. 6] Straight
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 46 LAB TESTS IS 3102 - 1965 S. No. Class Designation Compressive strength in kg/cm2 min. Water absorption after 24 h immersion in cold water, percentage max. Efflorescence Tolerance on dimension percentage. 1 Class HI 440 5 NIL +3 2 Class H II 440 5 NIL +3 3 Class F I 175 12 Very slight +3 4 Clss F II 175 12 Slight +3 5 Class I 70 20 Very Slight +3 6 Clss II 70 20 Slight +3 7 Class LI 35 25 Very Slight +3 8 Class LII 35 25 Slight +3 SOLID LOAD BEARING BLOCKS FIELD TESTS IS 2185 [Pt 1] 1979 1] Size As required [Tolerance +5 mm for length & +3 mm for height & width]. 2] Edges Should be sharp, straight & at right angle. 3] Texture Homogeneous 4] Defects Free from cracks. 5] Str. Should not break dropped from 1 m height 6] Absorption 10% by wt. 7] % of breaking. 3% LAB TESTS 1] Density 1800 kg/cum 2] Compressive Str. Average 4 N/mm2 [Average of 8 units] 1 No. 3.2 N/mm2 3] Water absorption. 10 by mass 4] Drying shrinkage 0.1%
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 47 MOSAIC TILES FIELD TESTS : 1] Size 25 cm x 25cm x 22 mm [10" x 10"] 30 cm x 30 cm x 25 mm [12" x 12"] 2] Colour Grey/White. WATER Quality : Potable water can be made use for concrete mixing. It should be clean and free from injurious amounts of oils, acids, alkalies, salt & organic material. Revised IS 456 - 1978 gives max possible limits for solids. Details of permissible limits : Max Organic 200 ppm Inorganic 3000 ppm Sulphate 500 ppm Chloride 2000 ppm for plain & 1000 ppm for reinforced. Suspended matters. 2000 ppm PHt value. 6 to 8 IS 3025-64 : Lays down that average crushing strength of 3 Nos. of 15 cm concrete cube made with water proposed to be used should not be less than 90% of average strength of 3 similar cubes made with distilled water.
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 48 S. H.E. Policy (Safety, Health & Environment)
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UNNATTI CONSTRUCTIONS PVT. LTD . (ISO 9001:2000) 49 CONTENTS 1. Control 2. Co-ordination Monitoring 3. Monitoring 4. Records 5. Accident Prevention, Organization and Facilities 6. Fire Prevention 7. Personal Protection 8. Electrical Installation 9. Protection 10. Ladders 11. Scaffolding 12. Hoist, Cranes & Derricks 13. Barricades 14. Handling & Storage of materials 15. Flammable Materials 16. Excavation & Shoring 17.
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