📚 Free IS Code Guides · 17 Articles

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In-depth guides for Indian civil engineers and GATE students. Every article has step-by-step IS code procedures, worked examples, and 10 GATE MCQs with detailed solutions.

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IS 456 — RCC Design
Reinforced Cement Concrete design as per Indian Standard
IS 456 · Beams
RCC Beam Design as per IS 456 — Complete Guide with 3 Examples
Singly and doubly reinforced beams, Mu,lim formula, shear design with stirrup spacing, deflection check. Three worked examples covering beginner to advanced.
⏱ 22 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Columns
RCC Column Design as per IS 456 — Axial Load & Bending
Short vs slender columns, Pu formula derivation, minimum eccentricity, effective length, Bresler's equation. Three worked examples and 10 GATE MCQs.
⏱ 20 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Footings
Isolated Footing Design as per IS 456 — Complete Guide
Three failure modes, working vs factored loads, punching shear at d/2, one-way shear at d, SBC table. Three worked examples and 10 GATE MCQs.
⏱ 18 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Bond & Detailing
Development Length in IS 456 — Formula, Table & Examples
Ld formula derivation from first principles, IS 456 Cl 26.2 bond stress tables, hook anchorage equivalents. Three worked examples and 10 GATE MCQs.
⏱ 20 min read📊 3 examples🎓 10 GATE MCQs
IS 456 — Slabs, Staircases & Shear Walls
More RCC design topics with complete IS code procedures
IS 456 · Slabs
One-Way Slab Design as per IS 456 — Complete Guide
Ly/Lx > 2 criterion, span-depth ratio, 1m strip method, distribution steel, BM coefficients for continuous slabs. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Slabs
Two-Way Slab Design as per IS 456 — BM Coefficients Method
Table 26 coefficients for 9 edge conditions, torsion reinforcement at corners, Mx = αx × w × lx². Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Staircase
RCC Staircase Design as per IS 456 — Dog-Legged Staircase
Waist slab type, slope factor √(R²+G²)/G, step self-weight 25R/2, NBC geometry rules. Three worked examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
IS 456 · Lateral Systems
Shear Wall Design as per IS 456 & IS 13920
Boundary elements at 0.2fck trigger, min 0.25% reinforcement each way, two curtains rule, ductile detailing. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
IS 1893 — Seismic Design
Earthquake resistant design for Indian buildings
IS 1893 · Seismic
Seismic Zones of India — IS 1893 Complete Guide
4 zones (Z = 0.10–0.36), Ah = (Z/2)(I/R)(Sa/g), base shear VB = Ah × W, vertical distribution Qi ∝ Wihi². Three worked examples and 10 GATE MCQs.
⏱ 20 min read📊 3 examples🎓 10 GATE MCQs
IS 875 — Loads
Live load and wind load on Indian buildings
IS 875 Part 3 · Wind
Wind Load Calculation as per IS 875 Part 3
Vb → Vz → pz → F design chain, k1/k2/k3/k4 factors, terrain categories, pz = 0.6Vz², pressure coefficients Cpe/Cpi. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
IS 875 Part 2 · Live Loads
Live Load on Buildings as per IS 875 Part 2
Complete floor load table, area reduction (max 25%), column load reduction by number of floors. Three worked examples and 10 GATE MCQs.
⏱ 14 min read📊 3 examples🎓 10 GATE MCQs
Geotechnical Engineering
Soil mechanics and foundation engineering
Geotechnical · Foundations
Bearing Capacity of Soil — Terzaghi's Formula & IS 6403
Three failure zones, general vs local shear, Nc/Nq/Nγ factor table, shape corrections for square and circular footings. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
Geotechnical · Soil
Soil Classification as per IS 1498 & USCS
A-line equation PI = 0.73(LL − 20), Cu and Cc criteria, plasticity chart, group symbols, Indian soil types. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
Concrete Technology
Materials and mix design for Indian construction
Concrete · Mix Design
Concrete Mix Design as per IS 10262:2019 — Complete Guide
Target strength f'ck = fck + 1.65s, w/c selection from graphs, water content tables, aggregate proportioning. Three full examples and 10 GATE MCQs.
⏱ 20 min read📊 3 examples🎓 10 GATE MCQs
Concrete · Materials
Water-Cement Ratio — Complete Guide with IS 456 Limits
Abrams' law, IS 456 Table 5 durability limits (0.55 to 0.40), effect on strength and permeability. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs
Surveying
Essential surveying concepts for civil engineering and GATE
Surveying · Levelling
Levelling in Surveying — Complete Guide with Examples
HI method, rise-fall method, BS/FS/IS terminology, arithmetic check, curvature and refraction correction 0.0673d². Three examples and 10 GATE MCQs.
⏱ 18 min read📊 3 examples🎓 10 GATE MCQs
Surveying · Contouring
Contour Surveying — Properties, Gradient & Interpolation
11 contour characteristics, CI vs HE, gradient = CI/HE, linear interpolation, volume by trapezoidal rule. Three examples and 10 GATE MCQs.
⏱ 16 min read📊 3 examples🎓 10 GATE MCQs

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