Quick-access design reference tables used on almost every project.
| Topic | Section | IS Code |
|---|---|---|
Unit Weights of Materials 100+ construction materials with IS 875 Part 1 reference | Quick Reference | IS 875-1 |
Concrete Mix Ratios Nominal & design mix proportions M5 to M80 with quantities per m³ | Quick Reference | IS 10262 |
Column Load Capacity Tables Load carrying capacity for all column sizes × M20/M25 × Fe415/Fe500 | Design Aids | IS 456 |
Development Length & Lap Length Ld and lap length for all bar diameters, grades, and bond conditions | Design Aids | IS 456 |
Concrete Cover Requirements Nominal cover by member type, exposure condition, and fire rating | Design Aids | IS 456 |
Dead Loads of Building Components Load per m² for slabs, walls, finishes, roofing — ready for structural analysis | Design Aids | IS 875-1 |
Live Loads (Imposed Loads) Floor loads by occupancy type — residential, office, industrial, assembly | Design Aids | IS 875-2 |
Safe Bearing Capacity of Soils SBC values by soil type for preliminary foundation design | Site Reference | IS 1904 |
Material Quantities per Unit of Work Cement, sand, aggregate, bricks per m³/m² for concrete, plaster, brickwork | Estimation | IS 2185 |
Reinforcement Limits & Detailing Rules Min/max steel %, bar diameter, spacing for slab, beam, column, footing | Detailing | IS 456 |
Structural Thumb Rules Quick sizing for slab, beam, column, footing — preliminary design & site checks | Site Reference | IS 456 |
Curing Periods for Concrete Minimum curing days by cement type, element, and exposure | Site Reference | IS 456 |
Slump Values for Concrete Recommended slump range by construction type and member | Site Reference | IS 456 |
Water-Cement Ratio Guide Max w/c by exposure, w/c vs strength, effect on durability | Quick Reference | IS 456 |
Concrete Testing Quick Reference Cube test acceptance criteria, test frequency, NDT, core test rules | Site Reference | IS 456 |
Bar Bending Shapes & Cutting Length Standard BBS shapes with cutting length formulas per IS 2502 & SP:34 | Detailing | IS 2502 |
Material Wastage Factors Standard wastage allowances for steel, cement, bricks, timber per CPWD | Estimation | CPWD |
Formwork Stripping Time Minimum period before removing shuttering per IS 456 Table 11 | Site Reference | IS 456 |
Paint & Coating Coverage Rates Coverage per litre/kg by paint type and surface for estimation | Estimation | IS 2395 |
Soil Classification (IS 1498) IS soil groups, field identification, SPT correlation, plasticity chart | Site Reference | IS 1498 |
Concrete Grade Selection Guide Which concrete grade for which application — decision guide | Quick Reference | IS 456 |
Basic Wind Speed by City (IS 875-3) Vb for 38+ Indian cities, terrain categories, design factors | Design Aids | IS 875-3 |
Seismic Zone Data (IS 1893) Zone factors, importance factors, response reduction, city-wise zones | Design Aids | IS 1893 |
Cement Types & Grades OPC 33/43/53, PPC, PSC, SRC, white cement — IS codes, strength, applications | Materials & Specs | IS 269 / 1489 / 455 |
Reinforcement Bar Grades Fe415, Fe500, Fe550, Fe550D, Fe600 — yield, UTS, elongation, bend test | Materials & Specs | IS 1786 |
Structural Steel Grades E165 to E550 — yield, UTS, weldability per IS 2062 | Materials & Specs | IS 2062 |
Aggregate Grading (IS 383) Sand zones I–IV, coarse aggregate 10/20/40 mm — sieve limits & properties | Materials & Specs | IS 383 |
Mortar Mix Ratios Cement-sand mortars 1:3 to 1:8 — strength, cement consumption, where to use | Materials & Specs | IS 2250 / IS 1905 |
Unit Conversions for Civil Engineers Force, stress, length, area, volume, density — kN ↔ kg, MPa ↔ kg/cm², SI ↔ FPS | Materials & Specs | SI System |
Two-Way Slab Bending Moment Coefficients IS 456 Annex D Tables 26 & 27 — αx, αy for all 9 edge conditions | Design Aids | IS 456 |
Slab & Beam Span/Depth Ratios L/d limits per IS 456 Cl 23.2 with modification factors — quick depth check | Design Aids | IS 456 |
Beam & Slab Deflection Limits Permissible deflection — span/250, span/350, brittle finish limits | Design Aids | IS 456 / IS 800 |
Punching Shear Check (Two-Way Shear) IS 456 Cl 31.6 — perimeter, τc, when shear reinforcement is needed | Design Aids | IS 456 |
Effective Length Factors for Columns IS 456 Annex E Table 28 — k values for braced and unbraced frames | Design Aids | IS 456 / IS 800 |
Weld Sizes & Strength Fillet & butt weld design — leg, throat, length, capacity per IS 800 / IS 816 | Design Aids | IS 800 / IS 816 |
Ductile Detailing for Seismic (IS 13920) Confining steel, hoop spacing, beam-column joint rules — mandatory for zones III/IV/V | Detailing | IS 13920 |
Stirrup & Tie Spacing Rules Maximum stirrup spacing for beams, ties for columns — IS 456 + IS 13920 | Detailing | IS 456 / IS 13920 |
Curtailment & Cut-off Rules for Reinforcement Where to stop bars in beams & slabs — IS 456 Cl 26.2.3 with simplified rules | Detailing | IS 456 |
Cover Blocks — Types, Sizes, Spacing Concrete, plastic, and PVC cover blocks — when to use what + spacing rules | Detailing | IS 456 |
Labour Productivity (CPWD Output Norms) Daily output per mason / labourer for concreting, plaster, brickwork, painting | Estimation | CPWD |
Earthwork Bulking & Shrinkage Factors Bank → Loose → Compacted volumes for soil & rock — for haul calculations | Estimation | IS 1498 / IS 2720 |
Plaster Quantities & Material Estimation Cement, sand per m² of plaster — internal, external, ceiling, two-coat | Estimation | IS 1542 |
Brickwork Quantities — Bricks & Mortar per m³ Number of bricks and mortar volume per m² and m³ of brickwork | Estimation | IS 1077 / IS 2212 |
Cube Test Acceptance Criteria IS 456 Cl 16 — sampling, testing, individual & average strength rules | Site Reference | IS 456 |
Defects in Concrete — Causes & Remedies Honeycomb, cold joint, segregation, plastic shrinkage — diagnosis & repair | Site Reference | IS 456 / IS 13935 |
Pile Bearing Capacity (IS 2911) Bored & driven piles — static formulas, load test, settlement criteria | Site Reference | IS 2911 |
BIM Concepts & Terminology OIR · AIR · PIR · EIR · BEP · CDE · LOIN — what every term means in plain English | BIM & Digital | ISO 19650-1 |
ISO 19650 Information Delivery Process The 8 activities of the delivery cycle — from assessment & need to project close-out | BIM & Digital | ISO 19650-2 |
LOD & LOIN Frameworks AIA LOD 100-500 · BIMForum LOD Spec · ISO 7817-1 LOIN — which to use when | BIM & Digital | AIA G202 / ISO 7817-1 |
IFC for Civil Engineers Industry Foundation Classes — schema, key entities, IFC 4 vs 4.3 vs 2x3, what to export from Revit | BIM & Digital | ISO 16739-1 |
Common Data Environment (CDE) Workflow WIP → Shared → Published → Archived — states, naming, suitability codes, popular platforms | BIM & Digital | ISO 19650-1 |
BEP & EIR — Structure and Contents BIM Execution Plan and Exchange Information Requirements — what every section must contain | BIM & Digital | ISO 19650-2 |
Classification Systems for BIM Uniclass · OmniClass · ISO 12006-2 framework — what to use on Indian projects | BIM & Digital | ISO 12006-2 |
BIM in India — 2026 Snapshot What's verified about BIM standards, mandates, and adoption in India today | BIM & Digital | Verified facts |
BIM Roles & Responsibilities BIM Manager · Information Manager · BIM Coordinator · Modeller — who does what | BIM & Digital | ISO 19650-1 / -2 |
BIM File Formats — IFC, RVT, DWG, NWC, gbXML Native, neutral, and exchange formats — what each is for and when to use it | BIM & Digital | ISO 16739 / vendor specs |
Splice & Lap Length Tables Lap lengths for tension and compression splices by bar diameter and concrete grade | Detailing | IS 456 |
Beam-Column Junction Detailing Ductile detailing requirements for beam-column joints in seismic zones | Detailing | IS 13920 |
Concrete Volume Formulas Volume calculation formulas and examples for common RCC members with wastage factors | Estimation | SP 34 / IS 456 |
Steel Consumption Rates Typical reinforcement steel quantities per cubic metre of concrete by structure type | Estimation | IS 456 / SP 34 |
Excavation Rates & Quantities Manual and machine excavation output rates for different soil types per IS 1200 Part 1 | Estimation | IS 1200 |
Standard Hook & Bend Lengths Hook and bend lengths for all bar diameters per IS 2502 | Quick Reference | IS 2502:1999 |
Concrete Grades & Properties Mechanical properties of M10–M80 grades per IS 456 | Quick Reference | IS 456:2000 |
Brick Types & Compressive Strength Brick classes, strength and absorption per IS 1077 | Materials & Specs | IS 1077:1992 |
Admixture Types & Dosage Chemical admixture classification and dosage per IS 9103 | Materials & Specs | IS 9103:1999 |
Waterproofing Materials & Methods Integral, surface, membrane and injection waterproofing per IS 3067 | Materials & Specs | IS 3067:1988 |
Footing Design Quick Charts Isolated and combined footing sizes for common loads per IS 456 | Design Aids | IS 456:2000 |
Staircase Design Parameters Rise, tread, width and structural rules per IS 456 and NBC 2016 | Design Aids | IS 456:2000 |
Retaining Wall Design Aids Proportioning rules and stability checks per IS 456 | Design Aids | IS 456:2000 |
Concrete Placing Temperature Limits Hot and cold weather concreting requirements per IS 7861 | Site Reference | IS 7861 |
Rebar Field Testing Requirements Site acceptance tests for reinforcement steel per IS 1786 | Site Reference | IS 1786:2008 |
Ready Mix Concrete Acceptance RMC delivery checks and strength acceptance per IS 4926 | Site Reference | IS 4926:2003 |
Site Safety Checklist Construction safety requirements per NBC 2016 and BOCW Act | Site Reference | NBC 2016 |
BIM-Based Quantity Takeoff QTO workflows, element mapping and accuracy by LOD per ISO 19650 | BIM & Digital | ISO 19650 |
BIM Clash Detection Workflow Clash categories, priority classification and resolution per ISO 19650 | BIM & Digital | ISO 19650 |
The InfraLens Civil Engineering Handbook is a searchable collection of design reference tables and quick-lookup values extracted from Indian Standards, IRC codes, and widely-used industry references. Every civil engineer — site engineer, structural designer, PMC consultant, QA/QC inspector — needs a few hundred numerical values memorised or bookmarked: concrete cover, grade strengths, TMT bar weights, lap lengths, unit weights of materials, dead and live loads, wind speeds by city, seismic zones by state, mix design ratios, section properties of steel sections.
Traditionally these live in printed "civil engineering handbook" books (Bhattacharya, Khanna, Civil Engineer's Reference Book) that sit on office shelves. The handbook on InfraLens digitises the same content with 76 searchable topics covering concrete, steel, soil, hydraulics, loads, and workmanship. Each topic is rendered as an interactive page with tables, formulas, SVG diagrams, and cross-references to the underlying IS or IRC code.
Unlike a PDF or printed book, every handbook topic on InfraLens links directly to the authoritative source. A page on *minimum concrete cover* links to IS 456:2000 Clause 26.4.2. A page on *unit weights of masonry* links to IS 875 Part 1. When you use a value, you see exactly which clause it came from — no ambiguity, no outdated tables.
For quick lookups on site (during a concrete pour, before accepting a material delivery, when preparing a BBS), search by the specific value you need: "concrete cover", "rebar weight", "lap length", "mix ratio M25". Results show the exact table with values and the code reference.
For design office use, browse by section — *Concrete*, *Steel*, *Loads*, *Soil*, *Hydraulics*, *Workmanship*. Each section aggregates related topics for sequential reference.
For learning and training, the handbook serves as a curated reading list. A fresh engineer can read through the entire Concrete section (cover, grades, mix design, durability, testing) in about an hour — roughly equivalent to the first 3 chapters of a printed textbook, but with every value traceable to the current IS code version.
The handbook intentionally complements the IS Codes database (where you browse by code number) and IRC Codes (where you browse by standard). Use the handbook when you want values by topic; use the code database when you want the complete code document.
The handbook is deliberately structured around the workflow of a practicing civil engineer, not around academic chapter order.
Section 1 — Quick Reference (8 topics): values you need multiple times a day — concrete cover, TMT weight, unit weights, lap lengths, common formulas. Optimised for 10-second lookups.
Section 2 — Materials & Specifications (15 topics): cement grades and properties (IS 269, IS 8112, IS 12269), aggregate grading (IS 383), sand specifications, brick and block specifications, admixtures (IS 9103), curing compounds, waterproofing materials, structural steel grades (IS 2062), TMT grades and bend test requirements (IS 1786).
Section 3 — Structural Design Aids (14 topics): slab bending moment coefficients (IS 456 Annex D Tables 26-27), column interaction charts (SP 16), shear capacity tables (IS 456 Table 19), deflection limits, anchorage checks, crack width estimation.
Section 4 — Reinforcement Detailing (11 topics): development length charts (Fe415/Fe500 in M20-M40), lap length charts, hook allowances, bend deductions, stirrup spacing, column tie spacing per IS 13920, chair and spacer placement, minimum and maximum reinforcement limits.
Section 5 — Estimation & Measurement (9 topics): unit conversion, cement bags per m³ for each grade, brickwork and plaster consumption, painting material consumption, waterproofing material consumption, standard wastage percentages, measurement rules per IS 1200.
Section 6 — Site Reference (11 topics): concrete cube test procedure (IS 516), slump test and workability, temperature effects on concrete, formwork stripping times (IS 456 Clause 11.3), curing periods, compaction factor test, RMC delivery protocols, concrete placement during monsoon.
Section 7 — BIM & Digital Construction (8 topics): ISO 19650 vocabulary, IFC file format, LOD/LOIN frameworks, CDE workflow, BEP and EIR templates, BIM classification systems, BIM execution roles. Curated for engineers transitioning from 2D CAD to BIM-enabled projects.
Every handbook topic is deliberately cross-linked to three places:
To the governing IS code: each value is anchored to its clause. Clicking the 'Source' tag on any handbook topic takes you to the IS code page with full clause text, tables, and amendments. For example, the Concrete Cover topic links to IS 456:2000 Clause 26.4.2 with the full Table 16 — so you can verify the handbook value against the original code.
To relevant calculators: numeric topics link to the corresponding calculator. The Development Length topic links to a small embedded development length calculator; the TMT Weight topic links to the Rebar Weight Calculator; the Concrete Mix topic links to the Mix Design Calculator. This lets you move from 'what is the value' to 'compute for my case' in one click.
To long-form knowledge articles: topics that need more context link to knowledge articles. For example, the Nominal Cover topic links to the 'How nominal cover protects RCC' article; the Lap Length topic links to the 'Development length vs lap length — the distinction that matters' article.
The reverse is also true — every knowledge article lists the handbook topics it draws values from, and every calculator output cites the handbook topic for each input value. This creates a web of references where you can start from any entry point (code, handbook, tool, article) and navigate to the others seamlessly.
The handbook is built to work on a noisy construction site — 3G network, small Android phone, one hand free, bright sunlight. Three design choices make this possible:
Small page weight: every handbook topic page is under 150 KB (versus 2-5 MB for typical 'content-rich' sites). First meaningful paint under 1.5 seconds even on a 3G connection. Tables render with CSS only (no heavy JS libraries), and SVG diagrams replace raster images.
Progressive Web App (PWA): after your first visit, the handbook caches in browser storage. Going offline afterwards (mid-pour, underground, basement) still gives you access to the 76 topics and the search index. When network returns, cached data auto-syncs. Add the site to your home screen (Android: 'Add to Home Screen' in Chrome menu; iOS: 'Add to Home Screen' from Safari share menu) for a one-tap access icon.
Downloadable PDF and Excel: each handbook topic has a download button producing a print-ready PDF (for field use with signed measurements) and an Excel sheet (for further calculation or import into your BOQ tool). PDFs are typeset for A4 portrait printing — suitable for site file folders and inspection record attachments. Excel sheets include all displayed values plus formulas where applicable.
Search-first navigation: the handbook search bar uses fuzzy matching — 'rebar wt' matches 'TMT Bar Weight', 'dev length' matches 'Development Length', 'seismic coeff' matches 'Seismic Design Coefficient'. Typing is optimised for speed, not typing accuracy. The search index is 40 KB and ships with the main page load — no additional network call is needed to search.
16 common questions about this topic, answered by civil engineers.
Yes. All 76 handbook topics are free to browse and search. Download buttons for individual tables are provided where applicable. Some downloads may require email registration (to limit abuse), but there is no paywall and no subscription for any handbook content.
The handbook content is compiled from: Indian Standards (IS 456, IS 800, IS 875, IS 1786, IS 2062, IS 516, IS 383, IS 2386, IS 10262, etc.), IRC codes (for road and bridge specific values), National Building Code 2016, SP 16 (Design Aids for Reinforced Concrete to IS 456), SP 6 (Handbook for Structural Engineers), and established industry references. Every page shows the source clause or reference.
Search "concrete cover" in the handbook search bar. You'll find a dedicated topic page with Table 16 from IS 456:2000 — cover values by exposure class (Mild 20mm, Moderate 30mm, Severe 45mm, Very Severe 50mm, Extreme 75mm) — plus member-specific rules for columns, footings, and water-retaining structures per IS 3370. Always select the exposure class based on site conditions (coastal, buried, industrial, marine).
Yes. Search "TMT weight" or "rebar weight". The page has weight per metre for bar diameters 6 mm to 40 mm per IS 1786:2008, plus a quick calculator to convert total reinforcement weight in kg given bar diameter and total length. Standard TMT weight values: 6mm=0.222 kg/m, 8mm=0.395, 10mm=0.617, 12mm=0.888, 16mm=1.580, 20mm=2.466, 25mm=3.854, 32mm=6.313, 40mm=9.864.
Nominal mixes per IS 456:2000 Clause 9.3: M20 is 1:1.5:3 (cement:sand:aggregate by volume), M25 is 1:1:2. However, for structural RCC work, IS 456 mandates design mix per IS 10262:2019 for grades M20 and above — trial mixes achieve the target mean strength. Nominal mixes are permitted only for M20 and below in small works. The handbook has detailed mix design tables and worked examples for M20 through M50.
Lap length = Ld (development length) = φ × σs / (4 × τbd) per IS 456:2000 Clause 26.2.1. For Fe 500 bars in M25 concrete, this works out to approximately 47 × φ for tension (e.g., 20mm bar → 940mm lap). For compression, Ld is 25% less. Minimum practical lap is 300 mm or 47φ, whichever is greater. In seismic zones, IS 13920 Clause 6.2 restricts lap locations — no laps in plastic hinge zones, and hoops at closer spacing in lap zones. The handbook has lap length tables for all common bar diameter × concrete grade combinations.
Per IS 875 (Part 1):1987 Table 1: Plain concrete 24 kN/m³ (2400 kg/m³), Reinforced concrete 25 kN/m³ (2500 kg/m³), Brick masonry (1st class) 20 kN/m³, Mud masonry 19, Stone masonry 27, Cement mortar 21, Cement plaster 21. For finishes: Marble flooring 26.5 kN/m³, Granite 27, Kota stone 26, Ceramic tile ~24, Mosaic tile 23, Wood (teak) 8.8, Glass 25. The handbook has the complete Table 1 with 100+ material entries.
For residential (1.5-2 kN/m²), office (2.5-4 depending on file storage), educational (3-4), hospital ward (2-3), retail shops (4-5), assembly halls (4-5), library stack rooms (6+), factories (5 for light, 7.5+ for heavy industries), warehouses (10+), roof live load (0.75-1.5 depending on slope). The handbook has the full IS 875 Part 2 Table 1 with occupancy-specific values and partition allowances.
IS 808:2021 — Dimensions for Hot-Rolled Steel Beams, Columns, Channels, and Angles — provides sectional dimensions and properties (depth, flange width, web/flange thickness, weight per metre, area, moment of inertia, section modulus, radius of gyration). The handbook has interactive section selectors: pick section type (ISMB/ISLB/ISWB/ISHB/ISMC/ISA) and designation — all section properties appear with the IS 808 reference.
India is divided into 4 seismic zones per IS 1893 Part 1:2016 — Zone II (least severe, Z=0.10), Zone III (Z=0.16), Zone IV (Z=0.24), Zone V (most severe, Z=0.36). The handbook has a city-wise seismic zone list for 150+ Indian cities, derived from IS 1893 Part 1 Annex E. Major cities: Delhi Zone IV, Mumbai Zone III, Bangalore Zone II, Chennai Zone III, Kolkata Zone IV, Hyderabad Zone II, Ahmedabad Zone III, Pune Zone III, Jaipur Zone II, Guwahati Zone V, Srinagar Zone V. Always use the exact zone for the project site, not the nearest metro.
IS 875 (Part 3):2015 Figure 1 divides India into 6 wind zones with basic wind speed Vb from 33 to 55 m/s. The handbook has a city-wise wind zone table. Major cities: Mumbai 44 m/s, Chennai 50, Kolkata 50, Delhi 47, Bengaluru 33, Hyderabad 44, Ahmedabad 39, Pune 39, Jaipur 47, Chandigarh 47, Guwahati 50, Vishakhapatnam 50 (coastal cyclone zone). Design wind speed Vz is derived from Vb using terrain/height/topography factors (k1, k2, k3, k4).
Handbook topics are updated when an underlying IS code or IRC code is revised, when a new topic is added to cover a recurring user request, or during periodic review (quarterly). Every topic page shows a "last reviewed" date. If you spot a stale value or want a new topic added, email info@infralens.in — we typically respond within a few days.
The IS Codes database is organized by code number — browse or search IS 456, IS 800, IS 1893 etc. as complete documents. You go there when you know the code and want everything about it. The handbook is organized by topic — concrete cover, unit weights, lap length, steel sections. You go there when you know the value you need but don't remember which code governs it. The two are complementary: every handbook topic links to its source IS code, and every IS code page links to the relevant handbook topics. Most engineers use the handbook for daily work and the IS codes database for deeper reference or learning.
We do not currently offer a consolidated PDF of all 76 handbook topics — by design. A single 1,500-page PDF would be unwieldy on mobile, go stale as IS codes revise, and defeat the search-first workflow the handbook is built around. Instead, each topic has its own PDF download — you can batch-download the 10-15 topics you actually use for your project. For offline availability, the Progressive Web App caches the full handbook automatically on first visit.
Start with the Quick Reference section — 8 topics covering concrete cover (IS 456 Table 16), unit weights of common materials (IS 875 Part 1), TMT bar weights (D²/162.2 formula), and standard lap lengths. These are the values you'll need on Day 1 at a construction site or design office. Next, read the Structural Design Aids section for RCC design basics — slab coefficients, column interaction charts, basic shear capacity. By topic order, a 20-hour reading commitment covers everything a fresh engineer needs for the first six months of practice.
Yes. SP 16:1980 (Design Aids for Reinforced Concrete to IS 456) values appear in the Structural Design Aids section — column interaction charts for various steel percentages, slab reinforcement tables, beam design charts. SP 6 (Handbook for Structural Engineers) values on structural steel design appear in the Steel Design section. Both Special Publications are BIS-published companions to IS 456 and IS 800 respectively — InfraLens treats them as authoritative handbooks alongside the main codes.