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Engineering Academy
Practical engineering-office training mapped to the LTA Civil Design Criteria, plus reinforced concrete element design calculators to BS 8110 for education.
RC element design to BS 8110 (14 calculators)
B01 Free
BS 8110 — one-way solid slab
Flexural design of a one-way slab strip with minimum/maximum steel, span/depth and bar spacing checks.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B02 Free
BS 8110 — rectangular beam
Rectangular beam flexure including compression steel, span/depth with modification factors and bar spacing.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B03 Free
BS 8110 — flanged (T/L) beam
Flanged beam in sagging: effective flange width, neutral axis in flange or web (3.4.4.5), span/depth.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B04 Free
BS 8110 — beam shear (links)
Shear stress, concrete resistance vc (Table 3.8) and vertical link requirement (Table 3.7).
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B05 Free
BS 8110 — short column (N + M)
Symmetrically reinforced rectangular short column under axial load and uniaxial moment, by strain compatibility.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B06 Free
BS 8110 — punching shear (slab–column)
Punching shear at internal, edge and corner columns: face stress, critical perimeters and shear reinforcement (3.7.6–3.7.7).
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B07 Free
BS 8110-2 — crack width in flexure
Cracked-section service stresses and design crack width with tension stiffening (BS 8110-2 3.8.3).
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B08 Free
BS 8110 — pad foundation
Isolated pad: bearing pressure, bending in two directions, beam shear and punching (3.11).
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B09 Free
BS 8110 — continuous beam (Table 3.5)
Uniformly loaded continuous rectangular, T or L beam: moments and shears from Table 3.5 coefficients, flexure at end span, first support, interior span and interior support, span/d and links.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B10 Free
BS 8110 — continuous one-way slab (Table 3.12)
Continuous one-way solid slab with simply supported or continuous end: Table 3.12 moments and shears, steel at each location, span/d, shear and bar spacing.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B11 Free
BS 8110 — stair flight and landings
Single flight spanning between landings: inclined self-weight, 15% span/d increase (3.10.2.2), maximum moment at zero shear, steel, deflection and shear.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B12 Free
BS 8110 — slender and biaxial column
Rectangular column: effective lengths (Tables 3.19–3.20), additional moments with K iteration (3.8.3), biaxial enhancement (3.8.4.5) and steel by strain compatibility.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B13 Free
BS 8110 — two-way slab (Tables 3.13–3.15)
Rectangular panel spanning two ways: restrained (Table 3.14) or simply supported (Table 3.13) moments, steel each way and over continuous edges, span/d, Table 3.15 support shears and corner torsion steel.
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
B14 Free
BS 8110 — pile cap (2, 4, 5 or 6 piles)
Pile reactions with moments, bending at the column faces, beam shear with 2d/av enhancement within 3Ø strips, and punching (3.11.4).
Tool: Education preview · Lesson: In preparation · Example: Built awaiting check · Workbook: Not applicable · Assessment: Not started
© 2026 QP Academy. Original calculation software implementing BS 8110-1:1997 (+A1, A2, A3). BS 8110 is WITHDRAWN (superseded by BS EN 1992-1-1 and, in Singapore, SS EN 1992-1-1). For education and for checking legacy designs only — not for new design submissions.
Foundation pathway
F01 Free
Design basis and calculation register
Set up a design-basis statement, source register, assumptions schedule and calculation revision record the way a Singapore engineering office expects.
Tool: No calculator (lesson/checklist) · Lesson: Drafted awaiting review · Example: Not started · Workbook: Not started · Assessment: Not started
L01 Free
Self-weight and load take-off
Calculate element self-weights for a load schedule, by element and in total, with every unit shown.
Tool: Draft · Lesson: Drafted awaiting review · Example: Drafted awaiting review · Workbook: Built awaiting check · Assessment: Drafted awaiting approval
L02 Subscription
Hydrostatic pressure
Draw the water-pressure diagram on a vertical face and calculate the resultant and its line of action per metre width.
Tool: Draft · Lesson: Drafted awaiting review · Example: Drafted awaiting review · Workbook: Built awaiting check · Assessment: Drafted awaiting approval
G01 Subscription
Ground model and parameters
Build a layer table from borehole data with documented parameter provenance, groundwater levels and missing-data flags. No automatic approval of soil values.
Tool: No calculator (lesson/checklist) · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
G02 Subscription
Basic retaining-wall pressure exercise
Restricted-model earth and water pressure diagram and resultant for a cantilever wall exercise, with the formula source stated.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
U01 Subscription
Simple buoyancy equilibrium exercise
Force balance between uplift and restoring actions for a simple underground box, with the factor treatment stated.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
I01 Free sample
Monitoring readings and trends
Import dated readings, compute movement from baseline and rates, plot trends, and compare with approved project review levels — handling gaps, duplicates and outliers transparently.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
A01 Subscription
Differential movement exercise
Relative movement, slope and angular distortion between monitoring points — a screening exercise, distinguished from a full asset impact assessment.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
Online Calculators
Interactive engineering, mathematics, accounting, finance and professional calculators with transparent formulas and downloadable reports.
3 live calculators · PUB ABC Waters suite under technical review BPDF Resources
Technical guidelines, codes of practice, government publications, design manuals, forms and checklists — each with its edition, revision status and official source link.
23 listings with edition and revision status · free to browsePage views recorded since launch: 679 (aggregate count only; no personal data shown).
Browse by authority
Choose an authority, then a code of practice, to find its calculators.
Singapore Land Authority
Codes of practice for this authority are being added.
Urban Redevelopment Authority
Code of practice
Development Control Guidelines
Calculators for this code are coming soon.
Building and Construction Authority
Code of practice
Approved Document (Building Control Regulations)
Calculators for this code are coming soon.
Code of practice
Code on Accessibility in the Built Environment
Calculators for this code are coming soon.
Code of practice
Code of Practice on Buildability
Calculators for this code are coming soon.
Code of practice
Code for Environmental Sustainability of Buildings (Green Mark)
Calculators for this code are coming soon.
JTC Corporation
Codes of practice for this authority are being added.
Singapore Civil Defence Force
Code of practice
Code of Practice for Fire Precautions in Buildings (Fire Code)
Calculators for this code are coming soon.
PUB, Singapore National Water Agency — Drainage
Code of practice
Code of Practice on Surface Water Drainage (7th Ed. 2018, Addendum No. 3 Apr 2025)
- On-site Detention Tank · Cl. 7.1.5 peak runoff control
- Basement Stormwater Tank and Pump · Cl. 4.9 and Cl. 10 pumped drainage
Code of practice
Technical Guide for On-site Stormwater Detention Tank Systems (Rev. 3, Aug 2024)
- On-site Detention Tank · Templates A, B and C
PUB, Singapore National Water Agency — Sewerage
Code of practice
Code of Practice on Sewerage and Sanitary Works
Calculators for this code are coming soon.
PUB, Singapore National Water Agency — Water Services
Code of practice
SS 636 Code of Practice on Water Services
Calculators for this code are coming soon.
PUB, Singapore National Water Agency — Earth Control Measures
Code of practice
Earth Control Measures (Code of Practice on Surface Water Drainage)
Calculators for this code are coming soon.
Land Transport Authority
Code of practice
Civil Design Criteria for Road and Rail Transit Systems (CDC)
- Engineering Academy: CDC chapters · Training mapped to the CDC
Code of practice
Code of Practice for Railway Protection
Calculators for this code are coming soon.
National Parks Board
Code of practice
Guidelines on Greenery Provision and Tree Conservation for Developments
Calculators for this code are coming soon.
General engineering and other standards
Code of practice
General engineering (no specific authority code)
- Simply Supported Beam · Free
- Concrete Volume · Free
- Engineering Unit Converter · Free
Code of practice
BS 8110 (withdrawn): RC element design for education
- Engineering Academy: RC design (BS 8110) · 14 education calculators
Engineering calculations you can check.
Free and premium calculators for civil, structural and geotechnical engineers, contractors, surveyors and other technical professionals.
Simply Supported BeamConcrete VolumeEngineering Unit Converter
Free calculators — no account needed
Simply Supported Beam
Reactions, shear force and bending moment diagrams for a simply supported beam with a point load and a full-span UDL. Optional elastic deflection.
Concrete Volume
Concrete volume for rectangular elements with wastage allowance, optional weight and a rounded-up order quantity.
Engineering Unit Converter
Convert length, area, volume, force, stress, moment, mass, density and pressure units using exact conversion factors.
PUB stormwater calculators (Singapore)
Calculated to the PUB Code of Practice on Surface Water Drainage and the PUB Technical Guide for On-site Stormwater Detention Tank Systems. Every formula cites its clause, with PDF and Word report downloads.
On-site Detention Tank
Peak runoff control to COP Cl. 7.1.5: site analysis, gravity (orifice) and pumped detention tank sizing with inflow and outflow hydrograph.
Basement Stormwater Tank and Pump
Pump sump storage and pumping capacity for rainwater entering basements to COP Cl. 10.1: 3-hour storage, 150 mm/hr pumping, standby pumps.
Popular calculators
Premium engineering calculators
Premium calculators are released progressively — each one specified, benchmarked and technically approved before publication.
Cantilever Beam Analysis
Support reaction, fixed-end moment, shear and tip deflection for a cantilever with a point load and a full-length UDL, with PDF report.
RC beam flexural design
RC beam shear design
RC beam torsion design
RC column design
Steel beam bending resistance
Steel beam shear resistance
Steel column buckling
Steel beam deflection
Lateral torsional buckling
Steel connection and bolt checks
Weld capacity
Browse by profession
Why use Online Calculate?
Transparent methods
Every calculator states its method, assumptions, applicability limits and the design standard (with edition and National Annex) where one applies.
Verified before release
Each engine is benchmarked against independent reference calculations and technically approved before it is published.
Deterministic results
Numbers come from fixed calculation code, never from AI guesswork. The same inputs always give the same outputs.
Works on site
Mobile-friendly layouts so you can run a quick check from site or the office.
Subscription pricing
Free
- 3 free calculators
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- No payment required
Premium All-Access
Provisional test price — not yet approved for sale.
- All published premium calculators
- PDF calculation reports
- Valid for one calendar month from successful payment
- Card: renews monthly, cancel anytime
- PayNow / WeChat Pay / Alipay: manual renewal
Individual Calculator
Provisional test price — not yet approved for sale.
- One premium calculator for one month
- Not yet available
Engineering calculation examples
Simply supported beam: offset point load + UDL
L = 6 m, P = 20 kN @ a = 2 m, w = 5 kN/m
RA = 20×4/6 + 5×6/2 = 28.33 kN
RB = 20×2/6 + 5×6/2 = 21.67 kN
Mmax = 28.33×2 − 5×2²/2 = 46.67 kN·m (x = 2 m)
Concrete volume: pad footings
6 × (1.8 m × 1.8 m × 0.6 m), 5% wastage
V = 6 × 1.8 × 1.8 × 0.6 = 11.664 m³
With 5% = 12.247 m³ → order 12.5 m³ (0.5 m³ steps)
Frequently asked questions
Do I need an account for the free calculators?
No. The three free calculators work without registration or payment.
Can I submit these results to an authority?
No. Outputs are computer-generated preliminary checks. They are not certified designs and are not endorsed by a Professional Engineer.
How do I log in?
Enter your email address and we send a single-use sign-in link that expires after 15 minutes. There is no password.
How do I cancel?
Cancel automatic renewal any time in My Account. You keep access until the end of the period you have already paid for.
Which design standards are used?
Each calculator page states its method and, where a design code applies, the standard, edition and National Annex.
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