According to RTU Syllabus

SURVEYING

LINEAR AND ANGULAR MEASUREMENTS

Part-10

Correction to Tape measurements-

1. Correction for standardization.
2. Correction for slope
3. Correction for pull
4. Correction for sag
5. Correction for temperature
6. Correction for mean sea level
7. Correction for Mis-alignment

Correction for Mean sea level

• The measured lengths at different altitudes are sometimes reduced to a common level generally called Mean sea level.
• The measured distance at any altitude '"h"above mean sea level would be greater than the equivalent length at mean sea level.
• so correction will be negative always.

D-L

ADITI SHARMA