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Surveying and Earthwork
2 tools in the Civil and Geotechnical area.
Earthwork Volumes and Mass Haul
Route earthwork and alignment computations from the public-domain surveying manuals: cut and fill volumes between cross sections by the average-end-area and prismoidal formulas with the prismoidal correction, fill converted to bank measure by the soil factors of NAVEDTRA 14337 Table 10-1, the cumulative-yardage table and the mass diagram with its balance points, free-haul lines, overhaul (planimeter and centroid methods), limit of economic haul, waste and borrow; a simple horizontal curve by the arc or chord definition (R, D, T, L, E, M, LC, PC, PT and the deflection-angle staking table as in FM 5-233 and NAVEDTRA 14337); an equal-tangent or unsymmetrical parabolic vertical curve (PVC, PVT, middle offset, rate of change, high or low point, station elevations with first and second differences); and the end area of a roadway template against a surveyed ground line with the three-level formula beside it. The defaults are the printed examples: the 20-station cumulative-yardage table of NAVEDTRA 14337 Table 10-2 with the 500-ft free-haul distance of its Figure 10-10, the FM 5-233 chord-definition curve (PI 18+00, I 45°, D 15°) and its Figure 3-20 sag curve (−10 % to +5 %, 600 ft), and the manual's station 305 cross section (540.3 ft²).
1 worked example reproduced, listed on the tool page.
Horizontal and Vertical Curves and Sight Distance
Route geometry from the public-domain surveying and highway-design manuals: the simple circular curve by the arc or chord definition (R, D, T, L, E, M, LC, PC and PT stations, the deflection-angle and chord staking table at any interval); compound curves between successive tangents or successive PIs and reverse curves between parallel or diverging tangents by the FM 5-233 procedures; the clothoid transition spiral (θ_s, X_s, Y_s, throw p, k, long and short tangents, T_s, E_s, the TS / SC / CS / ST stations and the spiral and arc staking tables, with the FM 5-233 ten-chord forms beside the exact series); superelevation and the minimum radius from the design speed, e_max and the side-friction factor (point-mass equation), with the runoff and tangent-runout lengths and the FM 5-233 spiral length; the equal-tangent or unsymmetrical parabolic vertical curve (PVC / PVI / PVT, offset e, K, high or low point, elevation table) with the stopping-sight-distance minimum lengths on crests and sags (headlight criterion), the comfort and passing-sight criteria, the available sight distance along the profile and the cut or fill of an entered ground line; stopping sight distance from speed, reaction time, deceleration and grade; decision and passing sight distance; the horizontal sightline offset to an obstruction. The default horizontal curve (R 1,000 ft, Δ 30°, PI 12+50) and crest (600 ft, +3 % to −2 %, 50 mph) are illustrative; the compound, reverse and spiral defaults are the printed NAVEDTRA 14337 and FM 5-233 examples.
1 worked example reproduced, listed on the tool page.
Other Civil and Geotechnical sections
Design Loads · Steel Design · Concrete Design · Foundations · Soils · Timber and Masonry · Hydraulics