Reinforced Concrete Beam Section Designer
Design tool for singly and doubly reinforced concrete beams following ACI 318M-11 code provisions with comprehensive section and material properties.
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Beam Deflection Calculator
Calculate maximum bending moment and deflection for simply supported beams under uniform loads. Essential for structural design and analysis.
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Two-Way Slab Design (NSCP 2015 / ACI 318) Using the Coefficient Method: Step-by-Step Worked Example
Design a two-way slab per NSCP 2015 and ACI 318 using the classical moment-coefficient method: thickness, Ca/Cb moments, strip steel, spacing, and a full 4.5x6.0 m worked example.
Cantilever Retaining Wall Design: Overturning, Sliding, and Bearing Checks with a Worked Example
Proportion a cantilever retaining wall and check overturning, sliding, and bearing pressure with Rankine active/passive theory. A full 4.0 m worked example shows a first trial failing sliding and how a shear key fixes it.
Steel Beam Design per NSCP 2015 / AISC 360: Flexure, Shear, and Deflection with a Worked Example
LRFD steel beam design per NSCP 2015 and AISC 360: flexure, compact-section limits, lateral-torsional buckling, shear, and deflection, with a full worked 6 m floor-beam example.
Septic Tank Design and Sizing (Philippines): Capacity, Dimensions, and Chambers with a Worked Example
How to size a septic tank in the Philippines: capacity from occupant flow and detention time, practice dimensions, chamber split, plus a full 6-person worked example.
Reinforced Concrete Stair Design (NSCP 2015 / ACI 318): Loads, Effective Span, and Reinforcement with Example
Design reinforced concrete stairs per NSCP 2015 and ACI 318: riser-tread rules, waist slab thickness, inclined loads, effective span, and a full dog-leg stair worked example with Rn/rho steel design.
How to Pass the Civil Engineering Board Exam (Philippines): Structure, Subjects, and a Realistic Review Strategy
How the PRC Civil Engineering board exam is structured (MSTE, HGE, SEC), the 70% passing rule with worked examples, and a realistic 4-6 month review plan.
Reinforced Concrete Beam Section Designer (ACI 318M-11)
Design tool for singly and doubly reinforced concrete beams following ACI 318M-11 code provisions. Calculate required reinforcement based on section properties, material strengths, and factored bending moments.
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Lot Plotter — Bearings & Distances
Our most-used tool. Enter lot bearings (DMS or decimal) and distances to plot the boundary, compute the area by the surveyor’s formula, check closure, and export — free, in your browser.
Open Lot Plotter · How it worksMinimum Beam Depth Calculator
Professional calculator for determining minimum depth of nonprestressed beams according to ACI 318-19 Table 9.3.1.1.
Open CalculatorSimple-Beam with Multiple Loads
Structural tool for simple beams with multiple loads. Draw load, shear, moment, and deflection diagrams with detailed calculations.
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"I use the Beam Deflection Calculator daily for preliminary designs. It's fast, accurate, and follows the latest code provisions. A must-have for any practicing engineer."
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"The crack width calculator and rebar development length tools are indispensable. Clean interface, instant results, and best of all — completely free."
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