Pre-formed shower pan systems and methods
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Solution Overview
Problem
Conventional shower pan construction using mortar/concrete is labor-intensive and prone to defects due to the need for precise concrete pouring to achieve an even slope towards the drain, requiring multiple trades and resulting in increased construction time and costs.
Innovation Solution
A pre-formed shower pan system comprising two portions with a flat bottom and sloped top surface, designed to fit seamlessly together with a waterproof liner in between, allowing for efficient assembly and reducing the need for on-site concrete pouring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional mortar/concrete is used for shower pan construction, then the shower pan can be formed with proper slope toward drain, but the construction process becomes labor intensive and prone to defects
Solution Approach 1:
The shower pan is pre-formed with the correct slope toward the drain hole before installation. The pre-formed pan includes a bottom portion with a bottom surface and a top surface having a predetermined slope, and a second portion with a bottom surface having the predetermined slope. This preliminary formation of the slope eliminates the need for labor-intensive on-site concrete pouring and slope checking, while ensuring manufacturing precision is achieved in a controlled factory environment.
2Reliability
If conventional concrete pouring is used, then the shower pan can be constructed, but construction time increases and project completion is delayed
Solution Approach 1:
The shower pan components are manufactured in advance with all necessary features including slope, drain hole, and waterproofing integration. The pre-formed pan is delivered to site as ready-to-install units that simply need to be assembled and tiled, eliminating weeks of on-site construction work while maintaining construction reliability through factory quality control.
Solution Approach 2:
The shower pan is divided into multiple pre-formed portions (bottom portion and second portion) that can be manufactured independently and assembled on-site. This segmentation allows for efficient factory production of each component with precise slopes and integrated waterproofing, reducing overall construction time while maintaining assembly reliability.
3Reliability
If traditional construction methods are used, then multiple trades need to be coordinated, but supervision and management costs increase
Solution Approach 1:
The pre-formed pan integrates multiple functions that traditionally required separate trades into a single manufactured component. The bottom portion and second portion are pre-assembled with integrated waterproofing and proper slope, combining what would otherwise require separate work by concrete workers, waterproofing specialists, and slope verification into one factory-integrated unit, reducing on-site coordination complexity.
4Ease of manufacture
If conventional construction is used, then materials can be applied on-site, but waste material increases
Solution Approach 1:
All materials are precisely measured and assembled in the factory before the pan is formed. The pre-formed pan eliminates on-site material waste by ensuring exact material usage during manufacturing, with waste materials properly disposed of or recycled in the factory environment rather than being generated on construction sites.
Data Source
AI summary
A shower pan has a first portion having a drain hole and a bottom flat surface to contact a floor and a top surface having a predetermined slope toward the drain hole; and a second portion coupled to the first portion at the drain hole, the second portion having a bottom surface with the predetermined slope and adapted to gaplessly fit with the first portion through a waterproofing pan liner.