Eduard Rasikhin
Founder & Lead Engineering Modeler
An alumnus of the National Aviation University (Ukraine) with a Master’s in Civil Engineering and Architecture. Eduard does not just design structures in a vacuum; he specializes in the digitization of complex building codes and structural standards. As the visionary behind CalcExp, he personally oversees the architecture of all engineering calculators—from civil and geotechnical mechanics to aviation and electrical systems. His primary focus is ensuring that every algorithmic output rigorously executes formulas based on International Building Codes (IBC) and Eurocodes, bringing architectural precision to every line of code.
Expert Tools Verified by Eduard Rasikhin
- GD&T True Position Calculator — Diametric Tolerance & Bonus (ISO/ASME)
- Press Brake Tonnage Calculator: Force, Die Selection & Springback
- Thread Pitch Calculator: Dimensions, Tap Drill & Stress Area
- Ceramic Tile & Grout Estimator: Precision Material Takeoff Guide
- ISO 68-1 Thread Calculator: Tap Drill Size, Pitch & Minor Diameter
- Thinset Calculator: Estimate Tile Adhesive Coverage, Bags & Cost
- Taper Turning Calculator — Offset, Angle & Conicity Formulas
- Tank Volume Calculator: Capacity, Fill Level & Hydrostatic Pressure
- Natural Stone Weight Calculator: Density, Volume & Load Formulas
- Steel Profile Weight Calculator: Precise Mass Estimation by Shape & Alloy
- Metal Plate Weight Calculator — Estimate Sheet Mass, Cost & Handling
- Straight Stairs Calculator: Rise, Run & Stringer Math Simplified
- Stair Carpet Runner Calculator: Measure Length, Area & Material Precisely
- Square Yards Calculator: Area, Volume & Cost Estimation Tool
- Square Meters Calculator: Area, Material & Cost Estimation
- Square Footage Calculator: Site Area, Volume & Cost Estimator
- Spiral Staircase Calculator: Ergonomic Dimensions, Headroom & Blondel’s Rule
- CNC Spindle Speed & Feed Rate Calculator — Optimize MRR and Cycle Time
- Baluster Spacing Calculator: Code-Compliant Railing Layout Guide
- Roof Snow Load Calculator — ASCE 7 Slope & Drift Analysis
- Dimensions to Weight Calculator: Estimate Mass & Volume from Measurements
- Vinyl Siding Calculator: Estimate Panels, Trim & Squares Accurately
- Sand Calculator: Estimate Volume, Weight & Cost for Any Project
- Shiplap Paneling Calculator: Board Count, Cost & Weight Estimator
- Sealant Consumption Calculator: Joint Volume & Cartridge Estimator
- Cable Sag & Tension Calculator: Catenary Analysis for Overhead Lines
- Round Pen Calculator — Panels, Footing & Cost Estimates
- Roof Truss Calculator: Span, Pitch & Load Force Analysis
- Shingle Roofing Calculator: Estimate Bundles, Nails & Materials
- Roof Pitch Calculator — Find Rafter Length, Slope & Cut Angles
- Roofing Material Calculator: Estimate Squares, Pitch & True Surface Area
- Rolling Offset Calculator: Formulas, Multipliers & Cut Lengths
- Road Base Materials Calculator — Estimate Aggregate Tonnage & Truckloads
- Rivet Length & Diameter Calculator — Shear, Bearing & Grip Sizing
- River Pebble Calculator: Estimate Weight, Volume & Cost for Any Project
- Rip-Rap Volume Calculator: Stone Weight, Bulk Density & Haulage
- Retaining Wall Block Calculator: Estimate Blocks, Weight & Drainage
- Rebar Weight Calculator: Estimate Steel Bar Mass, Length & Logistics
- ADA Ramp Slope Calculator: Compliant Grade, Rise & Run Analysis
- Rafter Length Calculator: Roof Pitch, Cuts & Framing Math
- Punch Force Calculator: Sheet Metal Tonnage & Shear Force Estimation
- Wooden Fence Material Calculator: Estimate Posts, Boards & Concrete
- Concrete Column Volume Calculator: Estimate Cement, Sand & Gravel
- Pool Volume Calculator: Accurate Water Capacity & Fill Time Estimates
- Pond Volume Calculator: Estimate Water Capacity, Liner Size & Fill Time
- Plywood Sheets Calculator: Estimate Layout, Waste & Cost Accurately
- Metal Plate Weight Calculator — Estimate Mass, Volume & Cost
- Pitch Diameter Calculator: Effective Thread Dimension Analysis
- Steel Pipe Weight Calculator: Formulas, Material Data & Engineering Guide
- Pipe Internal Volume Calculator: Fluid Capacity, Weight & Flow
- Paving Sand Calculator: Estimate Bedding & Joint Sand Volume Precisely
- Paver & Base Material Calculator: Estimate Units, Sand & Gravel
- Interior Paint Calculator: Coverage, Coats & Cost Estimation
- Masonry Mortar & Brick Calculator: Estimate Materials With Engineering Precision
- Log Weight Calculator: Estimate Timber Mass, Volume & Transport Load
- Lumber Volume Calculator: Board Feet, Cubic Meters & Cost
- Lumber Weight Calculator: Estimate Board Weight by Species, MC & Size
- Material Removal Rate (MRR) Calculator & Spindle Power Estimator
- Metal Roofing Cost Calculator: Material, Labor & Lifespan Analysis
- Metal Weight Calculator: Compute Mass, Volume & Surface Area by Profile
- Miter Angle Calculator: Crown Molding, Trim & Polygon Cuts
- Hoop House Calculator: Structural Arc, Film Area & Material Estimates
- R-Value Insulation Calculator: Thermal Resistance & U-Value Analysis
- Junction Box Size Calculator — NEC 314.16 Box Fill & Volume Guide
- K-Factor & Bend Allowance Calculator for Precision Sheet Metal Bending
- Ladder Angle Calculator: OSHA 4:1 Rule, Safe Inclination & Sizing
- Limestone Requirement Calculator: Soil Neutralization & Lime Rate Estimator
- Liters per Minute (LPM) Calculator: Flow Rate, Pipe Sizing & Capacity
- Excavation Pit Volume Calculator: Earthworks Estimation & Swell Factors
- Gravel Calculator: Estimate Volume, Weight & Cost Instantly
- Gravel Driveway Calculator: Estimate Tonnage, Volume & Cost
- Grout Coverage Calculator: Estimate Tile Joint Material by Area
- Building Heat Loss Calculator: HVAC Design Load & Boiler Sizing
- Glass Weight Calculator: Density-Based Mass Estimation for Glazing
- Fence Cost Calculator: Estimate Materials, Posts & Labor Instantly
- Square Feet to Cubic Yards Calculator: Material Volume & Cost Estimator
- Gas Furnace Sizing Calculator: BTU Load & AFUE Efficiency Guide
- GPM Calculator: Flow Rate Formulas for HVAC & Plumbing
- Gallons per Square Foot Calculator: Convert Rainfall Depth to Collected Volume
- Gambrel Roof Calculator: Rafter Lengths, Roof Area & Material Estimates
- Fire Flow Calculator — ISO & NFA Methods for Water Supply Sizing
- Ceramic Glass Replacement Calculator: Cut Size, Cost & Thermal Specs
- Floor Area Ratio (FAR) Calculator: Zoning Compliance & Buildable Area
- Flooring Material Calculator: Estimate Packs, Cost & Waste Accurately
- Floor Joist Calculator: Span, Deflection & Stress Analysis
- French Drain Calculator: Sizing, Hydrology & Material Estimates
- Wall Stud Calculator: Estimate Framing Lumber for Any Wall Layout
- Fence Post Concrete Depth Calculator: Footing Depth, Hole Size & Bags Estimated
- Epoxy Resin Calculator: Mix Ratio, Volume & Exothermic Risk
- Fence Section Calculator: Estimate Posts, Panels & Material Costs
- Fence Material Calculator: Estimate Posts, Pickets, Rails & Concrete
- Fence Material Estimator: Calculate Posts, Panels & Perimeter
- Picket Fence Calculator: Spacing, Cost & Material Estimates
- Decking Calculator: Estimate Boards, Joists, Fasteners & Cost
- Terrace Impregnation Calculator: Estimate Oil Volume & Deck Coating Coverage
- Shed Building Cost Estimator: Materials, Labor & Total Project Pricing
- Door Header Size Calculator — Span Tables, Formulas & Load Analysis
- Drywall Material Calculator: Estimate Sheets, Studs & Supplies Accurately
- Topographic Slope Calculator — Gradient, Angle & Grade Analysis
- Sonotube Concrete Calculator: Volume, Bags & Weight Estimates
- Concrete Weight & Volume Calculator: Estimate Loads, Rebar, and Delivery
- Countersink Depth Calculator: Precise Z-Depth & Angle Formulas
- Crushed Stone Calculator: Volume, Weight & Cost Estimation Guide
- Cubic Yards of Dirt Calculator: Bank, Loose & Compacted Volume Estimator
- Concrete Column Volume & Material Quantification
- Concrete Cylinder Compressive Strength Calculator (ASTM C39)
- Concrete Driveway Cost Calculator: Estimate Volume, Materials & Total Price
- Concrete Slab Calculator: Volume, Weight & Cost Estimation
- Concrete Stair Volume Calculator: Estimate Material, Weight & Bags
- CFM Airflow Calculator — Size Ventilation, Ductwork & HVAC Loads with Precision
- Chicken Coop Size Calculator — Exact Space Requirements by Breed, Climate & Management
- Clearance Hole Calculator — ISO 273 Sizes for Metric Bolts (M3–M24)
- Concrete Block Calculator — Estimate CMU Blocks, Mortar & Cost for Any Wall
- CMU Block Void Fill Estimation: Grout Volume, Weight, and Bag Quantity for Masonry Walls
- Cement Volume Calculator — Estimate Concrete Materials for Slabs, Columns & Footings
- Electrical Box Fill Calculator — NEC 314.16 Volume Requirements & Conductor Allowances
- Brick Wall Calculator: Estimate Bricks, Mortar Volume & Wall Weight Instantly
- Carbon Equivalent Calculator — Steel Weldability Analysis & Preheat Estimation
- Carpet Area Calculator — Estimate Roll Length, Seams & Waste Like a Pro
- Beam Load Calculator — Bending Moment, Shear Force & Deflection Analysis
- Bending Stress Calculator — Instant σ = M·y/I Analysis for Any Cross-Section
- Birdsmouth Cut Calculator — Rafter Notch Dimensions, HAP & Structural Compliance Check
- Board and Batten Siding Calculator: Estimate Boards, Battens & Linear Footage Instantly
- Board Foot Calculator — Estimate Lumber Volume, Weight & Cost Instantly
- Fence Board Calculator — Estimate Boards, Posts, Rails & Total Lumber Volume
- Heating Boiler Power Calculator via Volumetric Heat Loss Method
- Bolt Circle Calculator — Precision Hole Coordinates for CNC Machining & Flange Layout
- Bolt Torque Calculator — Compute Precise Tightening Torque for Metric & Imperial Fasteners
- Segmented Bowl Ring Calculator — Miter Angles, Segment Dimensions & Board Length
- Air Conditioner Room Size Calculator — BTU Cooling Load Estimator for Any Room
- Aluminum Weight Calculator — Estimate Mass, Cost & Surface Area by Alloy and Profile
- Angle Cut Calculator: Miter, Bevel & Compound Angles for Perfect Joints
- Angle of Depression Calculator — Compute Slope Angles, Grade Ratios & Line-of-Sight Geometry
- Asphalt Paving Calculator — Estimate Tonnage, Volume, and Cost for Any Project
- Arch Parameters Calculator — Geometry, Arc Length & Material Estimation
- Baluster Spacing Calculator — Equal Gap Layout for Code-Compliant Deck & Stair Railings
- Beam Deflection Calculator — Instant Structural Analysis for Simply Supported, Cantilever & Fixed Beams
- Air Changes Per Hour (ACH) Calculator — Ventilation Rate, Airflow & Room Volume
- Tx Antenna Gain Calculator: Parabolic, Horn & Patch Array Link Budget Tool
- EIRP Calculator: Effective Isotropic Radiated Power & RF Safety
- Link Power Budget Calculator: RF & Microwave Link Design Tool
- Hydraulic Retention Time Calculator (HRT): Effective Volume, Baffle Factor & Design Guide
- Detention Time Calculator: Hydraulic Residence Time (HRT) & Tank Turnover
- Air Conditioner Tonnage Calculator — Size Your AC Unit Precisely Using BTU Load Analysis