Building Systems Design Simulations

A collection of interactive 3D visualizations and simulations to help you master concepts in building systems design.

Introduction to Building Systems - Theory & Concepts - Occupant Load Calc

Overview of key Philippine building codes including NBCP, Fire Code, Accessibility Law, BP 220, and PD 957.

Occupant Load & Egress Calculator

Estimate capacity and required exit widths based on NBCP concepts.

Floor Area (m²)

Occupancy Type (Load Factor)

Note: Minimum exit width is generally 900mm regardless of calculated capacity.

Estimated Occupant Load

53 persons

Required Stair Width900 mm

Required Door/Level Width900 mm

Introduction to Building Systems - Theory & Concepts

Overview of key Philippine building codes including NBCP, Fire Code, Accessibility Law, BP 220, and PD 957.

Space Allocation Simulator

Total Building Area1,000 m²

Primary Workspace60%

Circulation25%

Primary

600 m²

Circulation

250 m²

Support

150 m²

A_{total} = A_{primary} + A_{circ} + A_{support}

Introduction to Building Systems - Examples & Applications - Exit Width

Overview of key Philippine building codes including NBCP, Fire Code, and Accessibility Law.

Exit Width Calculator

Floor Area (m²): 100

Occupancy Type

Factor: 1.9 m²/person

Occupant Load

(100 / 1.9 = 52.63)

Required Door Width

900 mm(Calc: 265 mm, Min: 900 mm)

Based on code minimum.

Water Supply and Distribution Systems - Theory & Concepts

Design of water supply, sanitary drainage, storm drainage systems, and sewage treatment.

Pipe Flow Friction Loss Simulator

Pipe Diameter (d)50 mm

Flow Rate (Q)5 L/s

Head Loss ($h_f$) / 100m

13.43 m

Velocity ($v$)

2.55 m/s

h_f = rac{10.67 \cdot L \cdot Q^{1.852}}{C^{1.852} \cdot d^{4.87}}

Sanitary Drainage and Vent Systems - Theory & Concepts

A comprehensive overview of sanitary drainage principles, pipe sizing, traps, venting, and wastewater treatment systems.

Drainage Pipe Slope Simulator

Pipe Slope2%

Horizontal Run Length10 m

Total Vertical Drop200 mm

\text{Drop} = ext{Length} \times rac{ ext{Slope %}}{100}

Fire Protection Systems - Theory & Concepts

Fire detection, alarm, suppression systems, hazard classifications, and NFPA basics.

Sprinkler Density Simulator

Coverage Radius2.5 m

Operating Pressure (P)30 psi

Calculated Density

0.145 gpm/ft²

\text{Density} = rac{K\sqrt{P}}{A}

Fire Protection Systems - Examples & Applications - Sprinkler Coverage

Fire detection, alarm, and suppression systems for building safety.

Sprinkler Head Spacing Calculator

Hazard Classification

Max Area/Head: 20.9 m²Max Spacing: 4.6 m

Room Length (m): 10

Room Width (m): 10

Total Area: 100.0 m²

Heads Required (by Area): 5

Heads Required (by Grid Layout):9

Layout: 3 x 3 Grid

Spacing X: 3.3mSpacing Y: 3.3mCoverage: 11.1m²/head

*Grid ensures no distance exceeds max spacing (4.6m) and no area exceeds max coverage (20.9m²).

Electrical Systems for Buildings - Theory & Concepts - Ohm Law

Fundamentals of building electrical systems, power distribution, 3-phase systems, power factor, and lighting design.

Ohm's Law Interactive Circuit

Adjust Voltage (V) and Resistance (R) to see how Current (I) changes in a simple circuit.

Voltage (V): 120 V

Resistance (R): 10

\Omega

Calculated Current (I = V/R)

12.00 A

I = \frac{120}{10} = 12.00\text{ A}

120V

10Ω

Electrical Systems for Buildings - Theory & Concepts

Fundamentals of building electrical systems, power distribution, 3-phase systems, power factor, and lighting design.

Voltage Drop Simulator

Load Current (I)20 A

One-way Length (L)30 m

% Voltage Drop

2.72%

Resistance (R_total)

0.313 $\\Omega$

V_d = I \times \left( rac{2 \times L \times R_{wire}}{1000} \right)

Electrical Systems for Buildings - Theory & Concepts - Electrical Load Calc

Fundamentals of building electrical systems, power distribution, 3-phase systems, power factor, and lighting design.

Electrical Load Calculator

Total Power

4,200 W

Current (at 230V)

18.3 A

Rec. Main Breaker

30 AT

Wire: 5.5 mm² (#10)

* Simplified calculation for educational demonstration only. Does not account for demand factors or specific code requirements.

Electrical Systems for Buildings - Theory & Concepts - Reverb Calc

Fundamentals of building electrical systems, power distribution, 3-phase systems, power factor, and lighting design.

Reverberation Time Calculator (Sabine's Formula)

Room Dimensions (m)

Length

Width

Height

Surface Materials

Ceiling

Walls (Average)

Floor

Reverberation Time (RT60)

0.00 s

Very Dead (Recording Studio)

DryLive

Note: Sabine's formula assumes diffuse sound field. Actual RT60 may vary based on furniture, occupants, and room geometry.

Electrical Systems for Buildings - Theory & Concepts - Sound Transmission

Fundamentals of building electrical systems, power distribution, 3-phase systems, power factor, and lighting design.

Sound Transmission Class (STC) Simulator

Wall Material

Mass Multiplier (Thickness): 1x

Add Cavity Insulation (+4 STC)Staggered Studs / Decoupling (+8 STC)

Estimated STC

Loud speech audible but not intelligible

Higher STC means better sound isolation. Mass Law states doubling mass adds ~6 STC. Decoupling is highly effective for lightweight walls.

Electrical Systems for Buildings - Examples & Applications - Voltage Drop

Fundamentals of building electrical systems, power distribution, and lighting design.

Voltage Drop Calculator

Simulate single-phase voltage drop over a run of copper wire.

Circuit Voltage (V)230 V

Load Current (Amps)15 A

One-way Length (Meters)30 m

Wire Gauge (AWG)

Results

Voltage Drop:5.72 V

Percentage Drop:2.49 %

End Voltage:224.28 V

Code Compliant (≤ 3%)

NEC recommends a maximum of 3% voltage drop for branch circuits and 5% total drop for feeders + branch circuits.

Electrical Systems for Buildings - Examples & Applications - Lighting Layout

Fundamentals of building electrical systems, power distribution, and lighting design.

Lighting Layout Simulator

Room Area (m²): 50

Target Illuminance (Lux): 500

Fixture Output (Lumens): 3200

Total Lumens Req: 52,083

Exact Fixtures: 16.28

Suggested Grid: 5 x 4 (20 Fixtures)

The grid shows a suggested even layout. Dimmed fixtures indicate extra lights needed to complete a symmetrical grid.

Heating, Ventilating, and Air Conditioning (HVAC) - Theory & Concepts - Heating Ventilating And Air Conditioning Hvac

HVAC systems, psychrometrics, duct design, cooling load factors, and vertical transportation basics.

Duct Sizing Simulator (Continuity Equation)

Airflow Volume (Q)1000 CFM

Target Velocity (V)1000 FPM

Required Cross-Sectional Area (A)

144 sq inches

(1.00 sq ft)

Equivalent Round Diameter: 13.5 inches

Q = V \times A \implies A = rac{Q}{V}

Heating, Ventilating, and Air Conditioning (HVAC) - Examples & Applications - Cooling Load

HVAC systems, cooling load estimation, and air distribution.

Cooling Load Visualizer

Number of People: 10

Equipment Power (Watts): 1000

Solar Heat Gain (BTU/hr): 5000

Total Cooling Required

1.08 TR

(12,912 BTU/hr)

Sensible Heat10,912 BTU/hr

Latent Heat2,000 BTU/hr

Vertical Transportation Systems - Theory & Concepts

Design and operation of elevators, safety mechanisms, traffic analysis, and escalators.

Elevator Traffic Analysis Simulator

Elevator Speed2.5 m/s

Number of Floors10

Round Trip Time (RTT)

81s

Handling Capacity (HC)

45 pax

HC = rac{300}{RTT} \times ext{Car Capacity}

Building Management and Automation Systems - Theory & Concepts

Introduction to Building Management Systems (BMS), smart technologies, IoT, and BIM LOD.

BMS Active Dashboard Simulator

Time of Day12:00

System Status: ACTIVE / OCCUPIED

Zone 1 Temp

24.0°C

Floor Lighting

100%

Sustainability and Green Building Design - Theory & Concepts

Overview of sustainable building certifications like LEED, BERDE, EDGE, Green Mark, and WELL.

Thermal Envelope Efficiency (U-Value) Simulator

U-Value (Thermal Transmittance)3.0 W/m²K

Temp Diff (T-out - T-in)10 °C

Energy Penalty (Daily)

15.0 kWh

Q = U \cdot A \cdot \Delta T

Sustainability and Green Building Design - Theory & Concepts - U Value Calc

Overview of sustainable building certifications like LEED, BERDE, EDGE, Green Mark, and WELL.

U-Value Calculator (Wall Assembly)

Material

k (W/mK)

Thick (mm)

R-Value

Interior Surface Film (Rsi)

0.130

0.028

0.092

0.028

Exterior Surface Film (Rso)

0.040

Total R-Value

0.318 m²K/W

U-Value

3.149 W/m²K

Acoustics and Noise Control Systems - Theory & Concepts

A comprehensive overview of architectural acoustics, sound transmission, and noise control systems in building design.

Reverberation Time (RT60) Simulator

Room Volume (V)500 m³

Reverberation Time (RT60)

0.95s

RT_{60} = rac{0.161 \cdot V}{A}