Surface Grading Estimating

We take off the plan contours and note the variance. If the exhibit shows a balance but the contours show a net import, we price the import and flag the discrepancy. You can then decide whether to bid the exhibit or the contours. We never average the two; we pick the more conservative number and state the assumption. This approach ensures you are covered if the actual site conditions differ from the exhibit. We also provide a side-by-side comparison so you can see the cost impact of each scenario. The geotech report and the stamped grading plan are the controlling documents, so we reference both in our notes.

We apply typical factors based on material type. Topsoil bulks 10–20% when stripped and shrinks when re-spread and compacted. Fill compacts, so the in-place volume is less than the loose volume. We state the factor on each line so you can adjust it if your geotech gives a specific number. For example, if the geotech report provides a shrink factor of 12%, we use that instead of our default range. These factors affect both the cut and fill quantities and the import or disposal volumes. We also note whether the material is bank, loose, or compacted cubic yards to avoid confusion.

Yes, when the borings show rock or the spec defines a rock line. We split cut into common earth and rock using the boring logs and the rock profile on the sections. If rippability is uncertain, we carry a separate allowance and note that blasting or crushing may be required. That line is often the largest single variable in a grading estimate. We also consider the cost of rock removal methods: ripping, hammering, or blasting, each with different unit costs. The rock line is typically defined by the geotech report or the grading plan, and we reference the specific sheet where it appears.

Rough grade is measured over the general site inside the limits of disturbance. Fine grade is measured only inside paving, curb, slab, and landscape limits, because those areas are held to ±0.10 ft and paid at a higher rate. We keep them as separate square footage lines so you can see the cost difference. For example, on a typical commercial site, fine grade might be 30% of the total disturbed area but 50% of the grading cost. We also check the tolerance requirements in the spec: some projects require fine grade to ±0.05 ft under slabs, which increases the number of passes and the cost.

We move that volume to a disposal line and price import separately. The cut quantity does not change, but the haul and tipping fees do. We also check whether the rejected material can be used in landscape areas or as subgrade fill elsewhere, which can reduce disposal volume. The geotech report is the controlling document for this call. If the report is not available, we note the assumption and recommend a contingency. Disposal costs vary widely by region, so we use local tipping fees and haul distances to estimate the impact. This line often becomes a significant cost if the rejected material is extensive.

Yes. SWPPP permits require inspection and repair after storm events, so we add a monthly maintenance allowance based on the project duration. We also price initial installation of silt fence, ditch checks, and inlet protection. Post-storm replacement is a separate line so you can see the cost of a wet season. The maintenance frequency depends on the local NPDES permit and the season. For example, a project in a rainy region may require weekly inspections and repairs, while a dry region may need only monthly. We state the assumed frequency and duration in the estimate so you can adjust it.

We add a separate line for well points, sumps, or pumping based on the drawdown shown in the geotech report. The cost depends on the depth below the water table, the soil permeability, and the duration of the excavation. If the report does not give a permeability, we note the assumption and you can adjust it. We also consider the discharge point and any treatment required by the permit. For example, if the water contains sediment, you may need a settling basin or filtration before discharge. The dewatering line is often a significant cost if the excavation is deep and the soil is granular.

We use both, because suppliers price differently. We measure compacted in-place volume in CY, then convert to TON using the supplier's unit weight from the mix design. If the supplier prices by the ton, we show both numbers. The conversion factor is stated so you can swap in your own supplier's weight. For example, if the unit weight is 1.4 TON/CY, then 100 CY equals 140 TON. We also account for waste and shrinkage. This dual approach ensures you can compare quotes from different suppliers on an equal basis. We also note whether the price includes delivery and taxes.

We list them as a separate line so they are not absorbed into general conditions. Grade stakes, hub and tack survey, and as-built survey of final grades are often required by the spec but left out of the bid form. We note the assumed frequency and let you adjust based on your surveyor's rates. For example, a typical project might require stakes every 50 feet along the curb line and at all grade breaks. The as-built survey is often required for the final payment, so we include it as a separate item. This transparency helps you avoid surprises.

We price the initial proof rolling pass by SF. Then we add a separate line for re-grading and re-proofing after a rain event, because that second pass is a real cost that the permit requires you to absorb. The number of passes depends on the season and the project duration, so we state the assumption. For example, if the project is in a wet season, we might include three re-grading events. We also consider the cost of hauling off soft spots and replacing them with suitable material. This line is often overlooked but can add significant cost if the weather is unfavorable.

Yes. We work from PDF plan sets, marked-up drawings, or CAD files. We use Bluebeam Revu and PlanSwift to measure areas and volumes from the PDF. If you have a CAD file, we can import it for more precise measurement, but it is not required. The takeoff is the same either way. We also use RSMeans data for unit costs, adjusted by ZIP code. For complex grading, we may request the cut/fill exhibit in a spreadsheet format to verify volumes. Our process is designed to be flexible and accurate regardless of the file format you provide.

Most projects return in 24–48 hours. Rush delivery is available on request. The turnaround depends on the size of the plan set and whether we need to reconcile a cut/fill exhibit. We confirm the schedule when we receive your documents. For large projects with multiple sheets and detailed geotech reports, we may need additional time to ensure accuracy. We also offer a preliminary takeoff within 24 hours if you need a quick budget number. Our goal is to provide you with a reliable estimate that you can use for bidding, so we prioritize accuracy over speed when necessary.

Yes. A bid-level surface grading estimate for contractors is built to be compared line by line, not just totaled. We break out topsoil stripping, mass grading, borrow material, soil compaction and hauling and disposal as separate Division 31 lines, so you can see where your number diverges from the competition. If the bid form requires unit prices, we provide them in CY, SF and LF. Turnaround is 24–48 hours for most projects, with rush available when the bid date is close.

Outsourced surface grading estimating means you send the plan set, geotech report and any CAD or digital terrain model files, and we return a completed takeoff in Excel and PDF with the marked-up sheets attached. We take off contour lines, cut and fill, pavement subbase and sediment basin quantities under Division 31, apply ZIP-code-adjusted pricing, and flag scope gaps. Your estimator reviews and adjusts assumptions rather than building the takeoff from zero. Most packages return in 24–48 hours.

We do not produce machine control models, but we can take off quantities from a digital terrain model, a laser scanning point cloud or a CAD surface exported from AutoCAD Civil 3D, Agtek or Trimble Business Center. When the model and the PDF exhibit disagree on contour lines or cut and fill balance, we flag the difference and price both readings. That gives a grading bid estimate you can defend if the civil engineer revises the exhibit after bid.