InSite SiteWork - Road Template

Many estimators face the challenge of bidding projects from plans that are less than complete.  Lagoons, farm ponds, and preliminary site development take-off require estimators to take primitive data and turn it into a good estimate.  InSite provides the tools necessary to achieve a quality take-off from less than complete plans.

Road Profile and Template

A difficult calculation by hand.  The example provided here is a sub-division road that includes the existing grades, a centerline profile and a road template.  Most estimators would be forced to draw cross sections at station intervals, and then do an average end take-off to obtain quantities.  Follow along with the example below to see how easy this take-off is with InSite SiteWork.

Enter the known Grades.  Begin the take-off by entering the plan scales, and tracing the existing grades.  Next, transfer any known elevations from the profile to the plan view.  On this simple example, there is a tie in elevation to the existing road (right) and another elevation at the match line (left). 

Trace the Grades and Centerline.

Use InSite's Auto-fill sloping line tool to trace the centerline, entering the known elevations, and letting InSite compute the elevations between. 

Offset the Centerline.  Once the centerline is traced, use the offset tool to enter the lanes.  Click the offset icon, and select the centerline.  The offset toolbox is where the offset details are entered.  The road box details indicate a lane width of 11 feet, with a slope of 1/4 inch per foot (.23). 

Offset the Centerline

By entering this data, and clicking the dual offset choice, InSite creates two offset sloping lines.  Combined with the centerline, the road surface is now defined.

Use this same techniques if any other features (curb and gutter, drainage ditches, etc.) are on the road box detail.

Slope to Daylight.  The road box details provide the specifications for slope tie-ins for both up and down slope conditions.  Choose the Daylight Offset tool to tie the edge of the road to the existing surface at a specified slope.

Automatic Dayight to Existing

The next illustration shows a portion of the road zoomed up with the tie-in to existing created by daylight offsetting both the left and right shoulders of the road.

Automatic Daylight Detail

See the 3-D:

The road 3D with daylighted surfaces

Stripping and Subgrade adjustments can be added easily to make a tedious manual take-off into a quick and easy exercise.

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