Forums Search/Statistics.
Track Forum24/04 14:47
Brainstorming for 2nd Phase Track Modernisation19/04 06:01
Rly Bridge Forum24/04 14:37
General Forum23/04 15:42
Works Forum24/04 15:34
Track Machine Forum18/04 15:03
ROB/RUB/LXING Forum18/04 15:15
Track Procurement Forum06/04 22:40
 How to use RSS
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/IRICEN1/themes/fisubsilversh/theme.php:138) in /var/www/html/IRICEN1/includes/sessions.php on line 249 Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/IRICEN1/themes/fisubsilversh/theme.php:138) in /var/www/html/IRICEN1/includes/sessions.php on line 250
Indian Railways Institute of Civil Engineering: Forums

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/IRICEN1/themes/fisubsilversh/theme.php:138) in /var/www/html/IRICEN1/includes/page_header.php on line 477 Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/IRICEN1/themes/fisubsilversh/theme.php:138) in /var/www/html/IRICEN1/includes/page_header.php on line 479 Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/IRICEN1/themes/fisubsilversh/theme.php:138) in /var/www/html/IRICEN1/includes/page_header.php on line 480
 
Post new topicReply to topic
View previous topic View next topic
Author Message

Deepak Kumar Jain
SSE(P. Way)/Track Cell/SECR/Hq/BSP

View user's profile
Shared Documents

Joined: Dec 01, 2010
No. of
Replies: 17

PostPosted: Wed May 30, 2012 5:22 pm Back to top

Generally measurement of above mean sea level at any Railway Station shown on Staion name board at end of platform. But i want to know exact location of reference/Bench mark, which indicates above mean sea level of any Railway Station. I think this should be available at zero chainage point but there are so many structures available at different elevation at zero chainage. It is requested to kindly clarify?
            
            
            
- Deepak Kumar Jain Senior Section Engineer(P. Way) ... 30-05-12

S. RAVI
XEN/works/CN/MS

View user's profile
Shared Documents

Joined: Feb 14, 2005
No. of
Replies: 7533

PostPosted: Thu May 31, 2012 7:59 am Back to top

What is 'mean sea level'? What does the sign about height above mean sea level at a railway station mean?

The 'Mean sea level' (MSL) is a reference level from which vertical elevation is measured. It is fixed by observations over a long time of the surface of the open ocean, averaging out the changes due to tides, etc. The level is then extended in an imaginary surface (an ellipsoid, or more accurately a geoid) to cover all points of the earth, including land areas far from the sea. Heights of locations can then be given with reference to the mean sea level computed for that latitude and longitude. This allows heights of different places to be compared in a uniform manner.
            
            
            
- S. RAVI XEN/works/CN/MS ... 31-05-12

MOHAMMAD BAKHSH
Rtd. Dy Chief Engineer

View user's profile
Shared Documents

Joined:
No. of
Replies: 1021

PostPosted: Thu May 31, 2012 10:07 am Back to top

Deepak@ Generally,references of stations MSL are taken by transferring permanent "GSI bench mark " available surrounding the area. You may locate them or consult survey people. This PBM is used to fix the datum and wotk out MSL.
The theoritical explanation given Mr Ravi also defines the query.
            
            
            
- MOHAMMAD BAKHSH  Rtd. Dy Chief Engineer ... 31-05-12

Deepak Kumar Jain
SSE(P. Way)/Track Cell/SECR/Hq/BSP

View user's profile
Shared Documents

Joined: Dec 01, 2010
No. of
Replies: 17

PostPosted: Thu May 31, 2012 6:06 pm Back to top

Sir, I want to know about only common policy, location where the Bench Mark (above MSL) are generally installled at any railway station by surveyer team. I think this should be available at zero chainage point of railway station but there are so many structures available at different elevation at zero chainage like rail level/Station Building/Platform etc. Which refrence should be follow? Are there any specific guide lines available in Railway Manulas?
            
            
            
- Deepak Kumar Jain Senior Section Engineer(P. Way)/Track Cell/SECR/Hq/BSP ... 31-05-12

G. Radhakrishnan

View user's profile
Shared Documents

Joined: May 11, 2010
No. of
Replies: 436

PostPosted: Thu May 31, 2012 7:52 pm Back to top

Please go through the following link which is still very much interesting

http://iricen.indianrailways.gov.in/IRICEN1/modules.php?name=Forums&file=viewtopic&p=283
            
            
            
- G. Radhakrishnan  ... 31-05-12

Mahendra Pratap Singh
Dy.CE/C/Reasi/NR

View user's profile
Shared Documents

Joined: Jun 20, 2005
No. of
Replies: 668

PostPosted: Sat Jun 02, 2012 12:31 pm Back to top

msl is marked on tbms available nearby.
            
            
            
- Mahendra Pratap Singh Dy.CE/C/Reasi/NR ... 02-06-12

A.V. Sreekumar
DEN/S/TVC

View user's profile
Shared Documents

Joined: May 19, 2009
No. of
Replies: 9

PostPosted: Wed Oct 03, 2012 10:52 pm Back to top

As stated by Sood sir in another post the MSL marked is based on the RL fixed by survey team. The RL of track corresponding to the centreline of station (Chainage) which is normally centre line of booking office is adopted as the MSL for stations. If you check the old working section, working plans of construction projects this can be seen.
            
            
            
- A.V.  Sreekumar ADEN ... 03-10-12

RAJEEV SHRIVASTAVA
Secy/AGM/N.Rly

View user's profile
Shared Documents

Joined:
No. of
Replies: 76

PostPosted: Fri Oct 19, 2012 11:40 am Back to top

On EIR, the standard practice was to bury a bench mark in the plinth of the station building, at zero chainage. The stone was accessible as the plinth projected out by half a brick from the wall and was above ground level.
            
            
            
- RAJEEV SHRIVASTAVA Secy/AGM/N.Rly ... 19-10-12
Display posts from previous:      
Post new topicReply to topic
View previous topic View next topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum