Civil and structural engineering, all 50 states
Stamped plans and engineering answers for your project
Retaining walls, foundations, drainage, site plans, structural and facade inspections, septic and stormwater design. Sealed by a PE licensed in your state and ready for your building department.
- Written proposal with scope, fee and schedule
- Drawings and reports sealed for permit
- Homeowners, builders, developers and public agencies
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What we engineer
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How it works
1
Describe the project
Tell us what you need and where. Photos, a survey or old plans help, but are not required to start.
2
Get a written proposal
An engineer reviews it and sends scope, deliverables, fee and schedule, including any site visit or testing the job needs.
3
Receive sealed deliverables
Plans, calculations or a report sealed by a PE licensed in your state, ready to submit for permit.
Free calculators
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Roof Pitch CalculatorConvert roof pitch (rise per 12 in of run) to angle and percent, and calculate rafter length and the pitch multiplier.Stair Stringer CalculatorCalculate number of risers, riser height, treads, total run, stringer length and angle for stairs that meet IRC limits.Concrete Bag CalculatorFind how many 40, 60 or 80 lb bags of premixed concrete you need for a small slab, pad or footing.Concrete Cylinder Strength and Water-Cement Ratio CalculatorCompute compressive strength from a cylinder break load and diameter, and the water-cement ratio of a mix by weight.Concrete Slab CalculatorCalculate cubic yards of concrete for a slab, patio or driveway, including a waste allowance and an order quantity rounded to the quarter yard.Concrete Slab Cost CalculatorEstimate the cost of a concrete slab from its size, your local ready-mix price per yard and an installed labor rate per square foot.Continuous Footing Concrete CalculatorEstimate concrete for a continuous wall footing (strip footing) from its total length, width and depth.Rebar Grid CalculatorEstimate the number of bars, total length and weight of rebar for a slab grid at a given spacing, with lap and waste allowance.Round Column and Sonotube CalculatorCalculate concrete volume for round columns, piers and sonotube forms, with total cubic yards and 80 lb bag count.Stress and Pressure Unit Converter (ksi, psi, MPa)Convert stress and pressure units used in civil engineering: ksi to MPa, MPa to ksi and psi, psf to kPa.Cut and Fill Volume Calculator (Average End Area)Compute earthwork volume between two cross-sections using the average end area method, in cubic feet and cubic yards.Earthwork Swell and Shrink CalculatorConvert earthwork between bank, loose and compacted cubic yards using swell and shrinkage factors, and find borrow needed for fill.
Projects in every state
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Guides
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Concrete Strength (psi) ExplainedConcrete strength is specified as the 28-day compressive strength, f'c, in pounds per square inch. Residential concrete is commonly 2,500 to 4,000 …How to Read a Survey vs a Site PlanA survey records what exists and where the legal boundaries are; a site plan shows what is proposed. Both use similar symbols, …Soil Bearing Capacity ExplainedSoil bearing capacity is the pressure the ground can carry under a footing without failing or settling too much. Footings are sized …What Is Stormwater Detention?Stormwater detention temporarily stores runoff from paved and roofed areas and releases it slowly, so a developed site does not send more …What Is a Culvert?A culvert is a pipe or box structure that carries a stream or drainage channel under a road, railroad, driveway or embankment. …What Is a Load Path?A load path is the continuous route that loads take from where they are applied, through the structure, down to the foundation …What Is an Easement?An easement is a legal right for someone else to use part of your property for a specific purpose, such as utilities, …Civil Engineer vs Architect: Who Does What?Architects design buildings: their layout, appearance and code compliance for occupants. Civil engineers design the site and infrastructure around and under them. …