×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Elevation

Elevation

Elevation

(OP)
Can anyone help me by telling me how to find the HI when the level is placed bewteen two stations,,,knowing the BM,BS ans FS?

RE: Elevation

HI = BM + BS

RE: Elevation

Sorry - just got to musing!!  Wondered if the acronyms are, well, somewhat "loaded" - especially the BM and BS??

RE: Elevation

BigH,

I guess I was thinking of the classroom definitions rather than the field, where BM + BS might represent conversational content rather than Bench Mark + Back Sight.  But, it is nice to see a sense of humor in these forums once in awhile.

RE: Elevation

Assuming you are using a level, the HI (height of instrument) is the elevation of the instrument relative to the benchmark.  When you book it, you set up your instrument, write down the benchmark elevation in your book and shoot the benchmark (BM).  Book the reading as your backsight (BS).  Now add the BS shot to the BM elevation and that is your HI.  Now you can shoot as many FS as you need with the one setup.  To move your instrument, use your last FS.  Calculate it elevation.  Move the instrument.  Shoot the last FS, but this time book the shot as a BS and repeat the HI calculation.  With a total station, enter the required information and follow the instructions.

KRS Services
www.krs-services.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources