*Step-by-step work through on earth volume computation using sufer*

*Step-by-step work through on earth volume computation using sufer*
The procedure assumes you already have sufer installed on your PC
👉Launch the sufer application by double clicking its icon on your desktop
👉On the program main menu, click Grid
👉Click data... in the drop down sub-menu
👉Navigate and locate the raw file containing your x,y,z data defining the surface in question
👉Click Open
An interface showing some sample of your data is displayed on the screen
👉Ensure that the appropriate field delimeter is selected and click OK
👉On the Grid Data interface that comes up next, select the appropriate field (i.e column) for each of your x, y, z data as contained in the previous interface
👉Select any desired griding method on the space provided for such on the Grid Data interface. The common and default method is kriging
*Note* : the result you obtain depends pretty much on the grid method you select as each of the methods uses different models in predicting the Grid elevation of the unobserved points
👉Click OK
The griding is then carried out by the application and the report displayed on the screen that can be saved to a file
*Note:* These procedures applies for each of the surfaces in the case of two surfaces volume computation. For a single surface, you just do that once for the available surface file

Next is to compute volume using the grid file created
👉On the program main Menu, click Grid
👉Click Volume in the drop down menu
👉Browse and locate the grid file created
👉Click to open the file
👉The Grid Volume interface pops up where you are expected to define your surfaces
👉The upper surface is natural ground surface (Topo-surface) for which a grid file has been created
👉The Lower surface is the grade or design surface
👉 For each of the surfaces, you can either chose to load a grid file or use a constant value
👉For a single surface volume with only the natural ground grid surface elevations, click and upload the grid file for the upper surface and define a constant, z value for the lower surface   (graded surface)
👉 Leave the Z- factor as 1
👉Click OK
The cut and fill volumes are displayed with the associated areas obtained

*Note*: the results earth volumes may vary from one application to another even with the same data depending on the method for computing areas and of course the griding method

The Importance of Record Copy of a Survey Plan

The Importance of Record Copy of a Survey Plan

A Record Copy (also referred to as Red Copy) is a copy of the original survey carried out by a Registered Surveyor which is lodged in the Cadastral Records department of the Office of the Surveyor General of the State.

The Record Copy is very important because it is required during the processing of any land title. In fact, a survey is not complete until the record copy is lodged.

An evidence of lodgment is usually given to the surveyor after successful lodgment of the record copy.

The time required to lodge a Record Copy depends on the state where the survey was carried out. For a survey carried out by a Registered Surveyor in Lagos state, lodgment of record copy should not take more than 2 months after submission.
It is very important for clients to demand for the evidence from the surveyor so that they don’t have issues during the processing of title because it was not lodged.