Material Awareness as per Indian Standards - Material Purchase (Part-2)

Material Awareness as per Indian Standards - Material Purchase

 (Part-2)

Download file ( Click here )

What are properties should be checked before purchasing the

 material? 

all information is provided in pdf file 

List of materials    

                                                                      
1.       Cement
 
2.       Steel
 
3.       Binding Wire
 
4.       Fly Ash
 
5.       Fine Aggregates
 
6.       Coarse Aggregates, Shingle, Stone Dust
 
7.       Bricks, Concrete Blocks, Fly ash bricks
 
8.       Paving Blocks
 
9.       Sanla / Instant Sanla
 
10.     P.O.P. / Gypsum
 
11.     Wooden Frames
 
12.     Plywood for Cenetering
 
13.     G.I. Pipes, C.P.V.C. Pipes
 
14.     R.C.C. Hume pipes
 
15.     Wooden Flush Door Shutters
 
16.     Glass
 
17.     M.S. Rolling Shutter
 
18.     Electrical Wires and Gauges
 
19.     Stones Kadappa, Granite, Sand Stone, Slate stone, lime, quartzite
 
20.     Tiles
 
21.     Fabrication material
 
22.     Electrical fixtures and fittings
 
23.     Paints

 

 1. Cement 

·         The Type of Bag :-  Jute / Polythene.

·         Cement older than 30 days should not be accepted.

·         The weight of the bag should not have variation more than 2 %

 2. Steel 

o   The color appearance should be steel gray and Rusting should not be found.

o   TOR marking on every meter length with every bar length min. 11 to 12 m.

o   Pitch of twist bar – 8 to 12 times of nominal diameter of the bar in mm.

o   It should bent smoothly & should not develop any crack while re-bending.

 3. Binding Wire 

  Should be easy to twist & bend.

  Thickness should be uniform and No rusting should be found.

 4. Fine Aggregates 

  Silt content should not be more than 5 %  by volume.

  Organic impurities should be within limits & should be identified by visualization.

 

 5. Coarse Aggregates

  Quality of stone should be Blackish, Gray and uniform colour and hard.

  Organic material absent and white spots not to be seen.

  Stone dust should not be present and Flakiness not more than 20%

  Perform Sieve analysis and confirm size of particles.

  20 mm sieve passing should be more than 85%.

  10 mm sieve passing not more than 10%.

  Water absorption should be less than 5% by weight.

 

6. Concrete Blocks

  The size should be as per requirement and the texture homogeneous.

  The frog should not be less than 1cm & not more than 2 cm.

  The water absorption should not be more than 10 % by weight.

  The blocks should be free from cracks.

  The edges should be sharp, right angle and breakage not more than 3%.

   The strength of brick to be tested by dropping the brick from a height of  1m height on its flat face & it should not break.

Find all the material list in the attached pdf
thank you