Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes

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Image
Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes: -    Image-Hydro Test (Photo Credit: Ritesh Raj) (1.) Firstly, approved QAP will be checked.  (2.) ID marks should be marked on the inner and outer sides of pipes.  Image-ID Mark (Photo Credit: Ritesh Raj)  (3.) To check the inner and outer diameter of pipes.   (4.) Smooth finishing and before dispatch of RCC pipes cement slurry or grouting where required.   (5.) Load test is required for RCC pipes as per IS codes. It is different for each dia, of RCC pipes.  Image-Plate Load Test (Photo Credit: Ritesh Raj)   (6.) Concrete mix design checked and in which cement content, cement brand, and water-cement ratio should be checked.  (7.) The straightness test to be checked of RCC pipes through the straightness rods to collinear visible.   (8.) As per requirement 2% of hydro tests are to be checked as IS:458 of the total ordered quantity.  Image-Hydro Test (Pressure Release) (Photo Credit: Ritesh Raj)  
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Bulking of Fine Aggregate

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 Bulking of Fine Aggregate-

Apparatus Required:-

(1.) Container

(2.) Steel rule

(3.) Steel rod of 6mm diameter

(4.) Measuring cylinder of 250 ml capacity

(5.) Sand sample under test

(6.) Observation sheet for record the reading

Recent Blog: Specific Gravity of Soil by Pycnometer Method

Procedure:-

(1.) To start the test, take the measuring cylinder and fill with sand up to 200 ml. graduation mark.

(2.) Now, level with steel rule without shaking the cylinder.

(3.) Transfer the sample of sand to another container.

(4.) Refill the measuring cylinder with water (up to 100 ml.)

(5.) Now, pour the sample of sand in measuring cylinder fill with water and stir it well with 6 mm diameter steel rod. So, that it is thoroughly mix with water. 

Also Read: Field Dry Density of Soil by Sand Replacement Method

(6.) Allow it for settle sometimes. You will be noted that the sand surface is now below its original level (i.e. less than 200 ml.)

(7.) Bulking of sand=200-Y /Y*100

                                = 200-150/150 *100

                                = 33.3 %

Picture taken from theconstructor.org


(8.) Repeat this procedure for two more sample of fine aggregate and record the reading in the observation sheet.

(9.) The average of three reading is taken as the final result.

Bulking of fine sand:- https://www.youtube.com/watch?v=Odfz20NkzGo (Source:NCTEL)


Sl.No.

Description

Sample No.

1

2

3

1

Volume of loose sand, ml

200

200

200

2

Volume of saturated sand(v), ml

150

156

154

3

Percentage bulking=(200-v/v)*100 (in %)

33.30%

28.20%

29.90%

4

Average Value

30.46

Also Read: Specific Gravity and Water Absorption of Coarse Aggregate 


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Written By-
Ritesh Raj

Email Id-rajritesh.motiharirr@gmail.com



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