Civil & Structural Studio

Peak stormwater runoff via Q = C·i·A with composite runoff coefficients by surface type.

Level-pool (storage-indication) routing showing inflow-to-outflow attenuation and peak reduction.

SCS Curve Number runoff and triangular unit hydrograph — peak flow and timing.

Composite curve number and runoff depth: Q = (P−0.2S)² / (P+0.8S).

Uniform flow velocity and capacity: V = (1.49/n)·R^⅔·S^½.

Manning normal depth, critical depth, and Froude-number flow regime in a trapezoidal channel.

Circular storm pipe capacity using Manning's equation, flowing full.

Earthwork balance from a grid of elevation pairs using the 4-corner average-end-area method.

Adjust the proposed grade plane to balance cut & fill and minimize import/export haul.

Simple circular curve tangent length, curve length, chord, and offsets.

Impervious percentage, floor area ratio, and lot coverage for site planning.

Percent slope, angle, and ratio conversions, including ADA compliance checks.

Presumptive bearing values and shallow footing sizing by soil type.

Simply supported beam reactions, shear, moment, and deflection under uniform and point loads.

Interactive shear and moment diagram builder for multi-load beam configurations.

Three-moment equation solver for 2-3 span continuous beams under uniform loads.

Euler critical buckling load, slenderness ratio KL/r, and AISC 360 design capacity φPn.

Singly reinforced concrete beam design moment capacity φMn, reinforcement ratio, and As.

AISC limit states for bolted connections: shear, bearing, tearout, net section, block shear.

Portal frame lateral drift and deflected shape under lateral loading.

Spread footing bearing pressure under uniform and eccentric loading, with kern check.

Unit shear, chord force, hold-down sizing, and APA nailing schedule for wood shear walls.

Flat and sloped roof snow loads per ASCE 7 with exposure, thermal, and importance factors.

ASCE 7 Components & Cladding wind pressure and net uplift fastener force.

Equivalent Lateral Force procedure for seismic base shear and story force distribution.

AISC W-shape section properties: area, moment of inertia, section modulus, radius of gyration.

Fillet weld shear capacity φRn using E70XX electrode strength and effective throat.

Unified Soil Classification System group symbol from gradation and Atterberg limits.

Terzaghi bearing capacity theory for shallow foundations, allowable bearing pressure.

Simplified Bishop method factor of safety for circular failure surfaces using method of slices.