--- name: accessible-elevator-shaft-dimensions description: "Use when determining the minimum elevator shaft (hoistway) dimensions required for accessibility compliance in Taiwan. Covers Taiwan Accessible Facilities Design Specification §406.1: general buildings (door clear width ≥ 90 cm, car depth ≥ 135 cm) and the H-2 residential proviso (door clear width ≥ 80 cm, car depth ≥ 125 cm). Provides pre-verified shaft dimension lookup tables for Mitsubishi, Yung Ta, and Chung Yu elevators (P8–P13), eliminating the need to cross-reference manufacturer spec sheets during floor plan layout." --- # Accessible Elevator Shaft Dimensions (無障礙電梯機道尺寸對應) ## Overview Taiwan's accessibility code specifies **car interior dimensions**; building plans must show **elevator shaft (hoistway) clear dimensions**. The mapping between the two depends on the manufacturer, capacity, and door type. Invoke this skill when: - Laying out elevator cores on a floor plan and need to know how much shaft space to reserve - Checking whether a selected elevator model meets §406.1 accessibility requirements - Preparing building permit drawings involving elevator shafts --- ## Regulatory Basis Both thresholds derive from **§406.1 of the Taiwan Accessible Facilities Design Specification** (建築物無障礙設施設計規範). The H-2 residential relaxation is a proviso clause within the same article. | Building Type | Door Clear Width | Car Depth | |---|---|---| | General buildings | ≥ 90 cm | ≥ 135 cm | | H-2 Residential / Apartment (proviso) | ≥ 80 cm | ≥ 125 cm | **Statutory text (§406.1, excerpt, translated):** > Car dimensions: elevator door clear width shall not be less than 90 cm; car depth shall not be less than 135 cm (handrail space excluded). *However, for buildings of use class H-2 (residential/apartment), the door clear width shall not be less than 80 cm and the car depth shall not be less than 125 cm (handrail space excluded); voice systems may add a switch.* --- ## Core Principle: Code Measures the Car; Plans Show the Shaft The regulatory threshold applies to **car interior dimensions** (door clear width, car depth). The dimensions drawn on building plans are the **elevator shaft (hoistway) clear dimensions (width × depth)**. Shaft dimensions vary by manufacturer, capacity, and door type. Direct substitution of code values into the plan is incorrect. > **The tables below have completed three-layer verification: regulatory threshold → manufacturer car-spec confirmation → corresponding shaft dimension** (data date: 2023-03-29). --- ## Shaft Dimension Table — General Buildings (Door ≥ 90 cm, Car Depth ≥ 135 cm) | Brand | Type | Capacity | Shaft W × D (cm) | Door Type | |-------|------|----------|-----------------|-----------| | Mitsubishi (三菱) | Machine-room-less | P8 | **170 × 180** | 2S Side-opening bi-fold | | Mitsubishi (三菱) | Machine-room-less | P8 | 205 × 180 | CO Centre-opening | | Mitsubishi (三菱) | Machine-room-less | P10 | 180 × 190 | 2S Side-opening bi-fold | | Mitsubishi (三菱) | Machine-room-less | P10 | 205 × 185 | CO Centre-opening | | Mitsubishi (三菱) | Machine-room-less | P12 | 200 × 185 | 2S Side-opening bi-fold | | Mitsubishi (三菱) | Machine-room-less | P12 | 215 × 180 | CO Centre-opening | | Mitsubishi (三菱) | Machine-room | P13 | 220 × 205 | — | | Yung Ta (永大) | Machine-room | P13 | 215 × 195 | — | | Yung Ta (永大) | Machine-room-less | P13 | 215 × 182 | — | | Chung Yu (崇友) | Machine-room | P13 | 210 × 205 | — | | Chung Yu (崇友) | Machine-room-less | P13 | 225 × 200 | — | > **Smallest shaft**: Mitsubishi machine-room-less P8 side-opening bi-fold — **170 × 180 cm** --- ## Shaft Dimension Table — H-2 Residential / Apartment (Door ≥ 80 cm, Car Depth ≥ 125 cm) All P8 configurations from all three brands are compliant. The table lists the minimum shaft size per brand: | Brand | Type | Capacity | Shaft W × D (cm) | |-------|------|----------|-----------------| | Mitsubishi (三菱) | Machine-room | P8 | 185 × 170 | | Mitsubishi (三菱) | Machine-room-less | P8 | **170 × 180** (2S) | | Yung Ta (永大) | Machine-room | P8 | 190 × 163 | | Yung Ta (永大) | Machine-room-less | P8 | 185 × 172 | | Chung Yu (崇友) | Machine-room | P8 | **180 × 170** | | Chung Yu (崇友) | Machine-room-less | P8 | 205 × 165 | > **Smallest shaft**: Mitsubishi machine-room-less P8 2S (170 × 180) or Chung Yu machine-room P8 (180 × 170) — similar footprint, different orientation; select based on floor plan. --- ## Notes - Mitsubishi machine-room-less P11 and P13 are not available in Taiwan - OH (overhead clearance) and PIT (pit depth) vary by speed rating — refer to manufacturer spec sheets - Machine-room types require additional machine room with minimum clear height: 220 cm (Mitsubishi, Chung Yu) or 200 cm (Yung Ta at 60 m/min) ## Design Checks - [ ] Confirm building use type (general or H-2 residential) to select the correct table - [ ] Verify shaft dimensions are reserved on the floor plan for the selected brand and capacity - [ ] Confirm structural beams and columns do not intrude into the shaft clear dimensions - [ ] For machine-room-less type: verify OH and PIT depths meet manufacturer requirements ## Data Currency - Manufacturers: Mitsubishi Electric Taiwan, Yung Ta Elevator, Chung Yu Elevator - Data date: 2023-03-29 - **Manufacturer specifications may be updated. Verify against the latest spec sheet before permit submission.** ## References - Taiwan Accessible Facilities Design Specification §406 (Elevating Equipment) — Ministry of the Interior regulation system: https://glrs.moi.gov.tw/ - Taiwan Building Technical Regulations — Design and Construction Chapter §55 (Elevator Equipment)