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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Bulk Density and Voids of Fine Aggregate

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 Bulk Density and Voids of Fine Aggregate

Types:-

(1.) Loose Weight

(2.) Rodded Weight 

Loose Weight 

Image Source:-ScienceDirect.com


Apparatus Required-

(1) Weighing Balance

(2) Temping Rod

(3) Straight Edge

(4) Fine Aggregate 

(5) Observation Sheet

(6) Cylindrical metal measure of 3 litres, 15 litres or 30 litres according to the size of coarses particle of aggregate.

Image Source:-civilsir.com


Recent Post:-Proctor Test for Compaction of Soil 

Test Procedure:-

(1) For size of particle 4.75 mm and under, cylindrical metal measure of capacity 3 litres is used.

(2) For size of particle 4.75 mm to 40 mm cylindrical metal measure of capacity 15 litres is used.

(3) For size of particle 40 mm and above, cylindrical metal measure of size 30 litres is used.

(4) To start the experiment take the metal measure of 3 litres capacity.

(5) Take the empty weight of metal measure=2.686 Kg

Also Read:-Bulking of fine aggregate

(6) Fill the metal cylinder with loose aggregate to overflowing by means of scoop.

(7) The height of fall of aggregate should not exceed 5 cm from top of the measure.

(8) Care should be taken to prevent the segregation of the particle size of sample.

(9) The surface of the aggregate then be levelled through straight edge.

(10) Now, take the weight of metal measure.                                                                                                                          Wt.=6.878 Kg

Record it in observation sheet.


Image Source:-civilalliedgyan.com

Also Read:-Sewer Network Analysis

(11) Now, loose weight of aggregate=Combined weight of metal measure and aggregate-Empty weight of meta; measure

=(6.878-2.686) Kg

=4.192 Kg

(12) Loose bulk density of fine aggregate =4.192/3

                                                                   =1.397 Kg/l

(13) Take another set of reading and and record in the observation sheet.

Read Also:-Compressive Strength of Brick 

Image Source:-indiamart.com

Format:-

Determination of bulk density and voids of fine aggregate(Sand)-

Sl. No.

Description

Sample No.

i

ii

1

Capacity of metal measure (L)

3L

3L

2

Wt. of empty metal measure(Kg)

2.686

2.686

3

Wt. of metal measure+Loose sand (Kg)

6.878

6..884

4

Wt. of metal measure+Compacted sand (Kg)

7.432

 

5

Loose Bulk Density (kg/L)

1.397

1.399

6

Average

1.398 kg/L

7

Rodded bulk density(kg/L)

1.582

1.586

8

Average

1.584 kg/L

9

Specific Gravity(Assuming)

2.6

10

% Voids in aggregate

4.60%




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Written By-
Ritesh Raj

Email Id-rajritesh.motiharirr@gmail.com


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