The process of quantity takeoff is a crucial aspect of highway construction projects, especially for intricate structures such as vehicular underpasses, light vehicular underpasses, and grade separators with connecting roads. Precise quantity takeoff is indispensable for estimating costs, planning the project, and allocating resources. Nonetheless, the distinctive design and construction prerequisites of these structures pose...
Road construction layers are a complex and challenging aspect for various stakeholders involved in road construction, including engineers, contractors, and quantity surveyors. One of the major challenges in road construction is the frequent changes in the cross-profile and pavement layers of the road. as per the design and site conditions. The cross-profile refers to the...
Topographic map creation in AutoPlotter is a useful feature for the land surveyors that eases the topo drawing creation from the survey data captured from any make of total station or GPS. Maps can be generated automatically from the data having Northing, Easting, Elevation and reference code.
GIS mapping works on collecting the data based on the relationship between the two points tied geospatially. The GIS mapping provides colour coded maps for different criterias as layers so that the geographers, land surveyors and mining engineers can be able to toggle between the layers to find elements of the maps like the existent landscape, underground electrical lines, underground pipe system or the water level by defining the contour of the place.
To achieve optimum design where road alignment is attained as per design standards and without excessive costs, it is necessary for the road designer to choose cross sectional elements wisely that helps to accomplish the final geometric design requirements.
Strengthening of existing road is carried out to increase the stability of road to meet the increased demand in traffic or other criteria. Procedure wise, the existing road should be corrected first with the profile corrective course (PCC) followed by the surface layers.
When it comes to report generation, complete area, volume or length reports are to be generated as per requirement. To understand, cutting & filling area of a cross section can be generated in full for the entire cross section. But if the construction is planned only for one side, area should be generated only for that portion.
Road Estimator (RE) has proved to be an important software tool to automate the entire process of quantity takeoff. Working stage cross sections and quantities can be estimated using the design data such as the finished road levels, pavement layer details, super-elevation etc.
While defining template in Road Estimator, kerb can be inserted by selecting the required one from the list displayed. The point of insertion can be median, carriageway, paved shoulder, earthen shoulder edge on either left side or on the right side of the road.
It requires a great effort to complete road construction project successfully. While all the stakeholders have crucial roles to play, quantity surveyor’s responsibility in replicating the actual site conditions to get the accurate estimate or as-built quantities is equally important.
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