소방설비기사 실기 수리계산

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About this app

Do not rely on apps to memorize the mathematical calculations and past exam questions for the Fire Protection Engineer (Mechanical Field) practical exam. This app allows you to directly input formulas into a calculator and visually learn the process of how the answer is derived.

It is not as simple as just entering values. For every calculation, it displays the formula → value substitution → answer exactly as it appears in the exam, and even includes the justification for which fire safety standards (NFPC/NFTC) clause the formula originated from.

■ 15 Types of Hydraulic Calculations Appearing in the Practical Exam

• Indoor/Outdoor Nozzle Discharge Rate Q = 0.653D²√(10P)

• Pump Total Head H = h₁+h₂+h₃+Converted Head by Water Pressure

• Pump (Motor) Power P = 0.163QH/η × K

• Water Source Capacity Q = N × q × t

• Hasen-Williams Piping Friction Loss

• Sprinkler K-Factor Discharge Rate Q = K√(10P)

• Fire Water Tank Storage Capacity, Pressure Tank Required Pressure

• Foam Fire Extinguishing Agent (Concentrate, Aqueous Solution, Water Source), CO₂ Surface Fire Agent Quantity

• Living Room Smoke Emission, Continuity Equation Flow Rate, Piping Diameter Selection

• Connecting Water Supply Discharge Rate, Battery Capacity

■ Solutions Effective in the Exam Room

• Do not just show the answer; provide the formula → substitution → answer in the exact 3-line solution

• Basis for each calculation Displays Fire Safety Standards (NFPC/NFTC) provisions

• Directly select conditions such as water pressure, concentration, and reference area via dropdown menus

■ Ideal for studying

• 100% offline — available anywhere, including subways and study rooms

• Screen off protection (the screen does not turn off while solving problems)

• No account required. Calculation data does not leave the phone. No ads.

■ One-time payment

The free version provides full solution steps for 5 types: water flow, total head, pump power, water source, and Hazen-Williams. The Pro version unlocks all 15 types for life with a single payment.

No subscription. No ads. No features removed later.

This app is for study reference only. Actual design and construction must comply with the latest Fire Safety Standards (NFPC/NFTC) and undergo supervision verification.

What’s new

v1.1: 계산기 5종 추가 — CO₂ 심부화재, 할론 1301, 분말 약제량, 스프링클러 헤드 개수, 펌프 성능시험