Posts

Showing posts from March, 2021

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

-
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)  
Post a Comment
Read more

Fineness Test of Cement

-
Image
     Fineness Test of Cement (Image Source:Civilread.com) It is used to find the fineness of cement. Imp. Points :- (i) 90 micron (Brass) sieve is used. (ii) Sieve shake for 10 minutes. Also Read: Final setting Time of cement (Image Source:youtube.com) Test Procedure:- (i) 100 gm cement sample will used. (ii) It will pass through 90 micron sieve. (iii) After 10 minutes the cement which is retained on sieve, we will take their weight and note them. (iv) If weight comes=3.5 gm (Cement retained) Also Read: Methodology for trenchless piping by jack pushing method Fineness (%) = Residual Cement on Sieve (in gm)/Initially take sample                        = 3.5/100 *100                       =3.5 % Note:-   Retained cement on sieve should not be more than 10 % of total weight of sample.   Has this page been  helpful to you? If yes, please mention in the comment box.        Thanks for visiting this site. Written By- Ritesh Raj Email  Id - rajritesh.motiharirr@gmail.com
Post a Comment
Read more

Final Setting Time of Cement

-
Image
  Final Setting Time of Cement Vicat Apparatus (Image Source:civilengineeringnotes.com) It is the time when cement loose their plasticity is called final setting time (or needle make to fail on impression on sample). Important Points:- (i) 5 mm dia. needle is used. (ii) No movement should be done when mould placing for initial setting test to till final setting test. Final Setting Time(Image Source:theconstructor.org) Test Procedure:- (i) Same mould is used, that was used in initial setting time test. (ii) After 30 minutes frequency we will make free fall condition. (iii) After sometimes mould will be hard and no any impression will make on it and its plasticity will be zero. (iv) (Now, example) Mould placing time=8:25 A.M.       Present time=11:30 A.M.       Final Setting time=185 minutes Note :- Always remember final setting time of cement will not more than 600 minutes (i.e. 10 hours) and initial setting time of cement will be minimum 30 minimum.            Has this page been  helpf
Post a Comment
Read more

Popular posts from this blog

"Sewer Network Analysis"

-
Image
The word sewerage is made from sewer. The word sewer indicates the usable water which is received from kitchen, bathroom and outfall from toilet/W.C. Every large or small city was held at sea, river and lake and it was planned at initial stage of the project planning, that the dirty water of homes and industries was dumped in that water source easily. Many years passed the dirty water from these utilities are dumped in the nearest source and that source water was make too poisons. Many aquatic life is survive in water and when dirty water is mixed with water source the biological cycle was affected and fishes and other animals population was decreases. Image Source:Pexels.com In that case population of human is also increases continuously and after that level of water source was decreases and we faced many problems continuously. Then sewer network is introduced. Outlet from all homes are connected to lateral lines means the water of kitchen, bathroom and water closet are co
Read more

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

-
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)  
Read more

Methodology for Trenchless Piping by Jack Pushing Method

-
Image
  Methodology for Trenchless Piping by Jack Pushing Method                       Work Under Pit (Photo Credit: Ritesh Raj) 1.0 Purpose: The Purpose of this procedure is to lay guidelines, requirement and to establish a method or a system to control the open cutting & trenchless activity.   2.0 Scope : The Scope of the works covers the laying of RCC Pipe NP4 of 1000mm diameter on LHS of NH (NH No. will be mention) Road from (Chainage 1) to (Chainage 2) by using Trenchless Jack Pushing method.  Also Read: Initial Setting Time of Cement 3.0 Methodology: 3.1 Survey Alignment of Pipe Line to be marked from the position of Manhole to Manhole which is to be constructed. 3.2 List of Manpower: ·          Engineer                                   - As per Requirement ·          Safety Officer                           - As per Requirement ·          Supervisor                                - As per Requirement ·          Excavator Operator                   -
Read more