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Civil Engineering Encyclopedia — India's IS Code Reference

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A complete reference built by a practising civil engineer — covering RCC design, concrete mix, IS codes, structural elements, and the full engineering vocabulary. No subscriptions. No paywalls.

Quick: Concrete Mix Design RCC Beam IS 456 Bending Moment Modulus of Elasticity Bar Bending Schedule
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Calculators
Live engineering calculators for RCC design, concrete mix, footings, slabs, columns, bar bending, and more — all as per IS codes.
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IS Codes
Clause-level summaries of Indian Standard codes — IS 456, IS 875, IS 1893, IS 800, IS 10262, and 25+ more — with key tables and provisions.
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Formulas
Structural, geotechnical, hydraulics, surveying, and construction formulas — each with variable definitions and worked examples.
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Glossary
Plain-English definitions of every technical term a civil engineer encounters — from admixtures to zero slump, A to Z.
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Abbreviations
Every abbreviation used on civil engineering drawings, reports, and codes — BBS, CBR, FGL, RCC, SBC, and 150+ more decoded.
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Structural Elements
Deep-dives into beams, columns, slabs, footings, walls, staircases — theory, design steps, detailing rules, and IS code clauses all in one place.
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Quick practical rules every site engineer must know — RCC sizing, concrete cover, reinforcement percentages, footing depth, and 100+ more rules by category.
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Concrete Mix Design
IS 10262 : 2019
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RCC Beam Design
IS 456 : 2000
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RCC Column Design
IS 456 : 2000
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Slab Design
IS 456 : 2000
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Isolated Footing
IS 456 + IS 1904
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Bar Bending Schedule
IS 2502 : 1963
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Load Estimation
IS 875 : 1987
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Unit Converter
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IS Codes

Key Indian Standards

Full IS Code Directory →
IS 456
Plain & Reinforced Concrete

Code of Practice — 2000 (Reaffirmed 2021)
IS 10262
Concrete Mix Design

Guidelines — 2019 (latest revision)
IS 875
Code of Practice for Design Loads

Parts 1–5 — Dead, Live, Wind, Snow, Special
IS 1893
Criteria for Earthquake Resistant Design

Part 1 — 2016 (General Provisions & Buildings)
IS 13920
Ductile Design & Detailing of RCC

Seismic Zone III, IV, V — 2016
IS 800
General Construction in Steel

Code of Practice — 2007
IS 2911
Design & Construction of Pile Foundations

Parts 1–4 — 2010
IS 3370
Concrete Structures for Storage of Liquids

Water Tanks — Parts 1–4
Formulas

Essential equations

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Bending Stress
σ = M·y / I
M = bending moment, y = distance from NA, I = moment of inertia
Limiting Moment of Resistance
Mu,lim = 0.138·fck·b·d²
For Fe415 steel (IS 456 Table — xu,max/d = 0.479)
Area of Steel Required
Ast = Mu / (0.87·fy·d·(1 - fy·Ast / fck·b·d))
Iterative formula per IS 456 Cl. G-1.1
Water-Cement Ratio
w/c = 0.5 / (f'c / fck + 1.5)
Abrams' law approximation for IS 10262 mix design
Safe Bearing Capacity
SBC = (cNc + γDNq + 0.5γBNγ) / FOS
Terzaghi's general bearing capacity equation
Shear Stress
τv = Vu / (b·d)
Nominal shear stress (IS 456 Cl. 40.1)
Dictionary

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Built by a Civil Engineer, for Civil Engineers.

Finding reliable, practical, and code-compliant information on site or in the design office is often frustrating. Developed by Prabakaran and drawing from active experience as a Project Engineer managing large-scale international infrastructure, this encyclopedia bridges the gap between academic theory and practical site execution.

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