NCC Shower Fall Requirements: Your Guide to Safe & Compliant Bathrooms
Where a shower is above a bath or spa, use requirements for shower. 2019: Table 3.8.1.1. Options Images Guide. State variations. x Clear variation. ACT NSW NT...
Understanding NCC Shower Tray Fall Requirements
The National Construction Code (NCC) sets out the performance requirements for shower trays to ensure safety and accessibility. This article delves into the key aspects of NCC shower tray fall requirements, providing a comprehensive guide for builders, plumbers, and homeowners.
NCC Shower Tray Fall Requirements: An Overview
The NCC Volume One, Section D3.6, outlines the requirements for shower trays. The primary focus is on preventing water from spilling onto the floor and creating a slip hazard. Here's a breakdown of the key fall requirements:
- Fall to the Waste: The shower tray must be designed to direct water towards the waste outlet. This is typically achieved through a slope of at least 1:40.
- Fall to the Shower Recess: If the shower tray is not fully contained within a shower recess, it must fall away from the recess at a slope of no more than 1:40.
- Fall to the Shower Screen: If a shower screen is installed, the tray must fall away from the screen at a slope of no more than 1:40.
Why Are These Falls Important?
The NCC shower tray fall requirements are not just about aesthetics; they serve critical safety and accessibility purposes. By ensuring water is directed away from the shower opening, these falls help prevent slips, trips, and falls. They also make it easier for people with disabilities or mobility issues to use the shower safely.
Measuring Shower Tray Falls
To ensure compliance with NCC requirements, it's crucial to measure shower tray falls accurately. Here's how:
- Measure the distance from the highest point of the shower tray to the waste outlet.
- Measure the height of the shower tray at the waste outlet.
- Divide the height by the distance to calculate the fall. For example, if the height is 50mm and the distance is 2000mm, the fall is 1:40.
Tips for Achieving the Correct Falls
Here are some tips to help you achieve the correct falls when installing shower trays:
- Use a string line and spirit level to ensure the tray is sloping correctly.
- Check the falls before and after tiling to ensure they haven't been compromised.
- Consider using a pre-sloped shower tray or a support system that allows for easy adjustment of the falls.
Exceptions to the NCC Shower Tray Fall Requirements
While the NCC requirements provide a general guide, there are some exceptions. For instance, if the shower tray is fully contained within a shower recess and the recess has a fall to the waste, the tray does not need to have a fall. However, it's always best to consult with a professional or the relevant authority if you're unsure about an exception.
Conclusion
Understanding and complying with NCC shower tray fall requirements is crucial for ensuring the safety and accessibility of showers. By directing water away from the shower opening and towards the waste, these falls help prevent slips, trips, and falls. Whether you're a builder, plumber, or homeowner, understanding these requirements can help you create safe, functional, and compliant showers.
<strong>Part 10.2 Wet area waterproofing | NCC - National Construction Code</strong><p>Where a shower is above a bath or spa, use requirements for shower. 2019: Table 3.8.1.1. Options Images Guide. State variations. x Clear variation. ACT NSW NT</p>
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