MEP Design & Calculation 2025 | HVAC, Plumbing & Firefighting Engineering | ASHRAE SMACNA NFPA Codes

Full Slide-by-Slide Description

Slide 1 – Introduction:
Overview of mechanical design workflow for MEP engineers using Revit and Excel. Learn how theory links with technical-office deliverables.

Slide 2 – Cooling Load (ASHRAE Method):
Step-by-step load calculation using Q = 1.08 × CFM × ΔT. Practical 120 m² office example showing heat-gain balance and TR estimation.

Slide 3 – Duct Sizing (SMACNA):
Velocity-method example with airflow charts and pressure-drop reference tables for optimal air-distribution design.

Slide 4 – Pump Head & Selection:
Explains total head, friction loss, and efficiency curves. Select the correct centrifugal pump from duty-point data.

Slide 5 – Pressure Drop in Valves & Fittings:
Covers equivalent-length method and K-values to calculate ΔP across elbows, tees, and control valves.

Slide 6 – Pipe Sizing & Drainage:
Design cold/hot water networks and drainage slopes per IPC standards with flow Q = A × V.

Slide 7 – Firefighting System (NFPA):
Full pump-room layout with NFPA 13 / 14 / 20 / 22 / 25 / 72 / 2001 code references, sprinkler spacing, and alarm integration.

Slide 8 – BOQ Integration:
Shows how to extract calculated quantities into Excel for cost control and 10 % overhead estimation.

Slide 9 – HVAC Equipment Schedule:
Practical example of AHU/FCU data tables showing CFM, TR, and static pressure for system coordination.

Slide 10 – Coordination & Summary:
Demonstrates HVAC–Plumbing–Fire–Electrical coordination, QA/QC integration, and consultant approval workflow.



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