digital contour survey of allotted land measuring 23.97 jec for setting up bhq of 14th bn ndrf at vill-behna , district -mandi h.p digital contour survey at mandi land , sub heading 1 , conducting digital topographical survey work for land in longitudinal and cross sectional direction by total station machine including- i) plotting the contours at contour interval of 10 meter on sheet. ii) mentioning all permanent and other physical features i.e. datum level, h.f.l. & l.f.l. iii) marking of low level areas along with dimensions & levels, position of trees, sewage line, existing structures, nomenclature & nos. of story in all existing building etc. located in different patches /chunks etc. of available land iv) all road and accesses to the campus. v) grid reference of all, corners of boundary of the campus plotting on google map.