Embedded Access Assembly With Sealed Covers for Raised Slabs
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Solution Overview
Problem
Existing cleanroom construction methods involving raised slabs face hazards from open access holes, leading to accidents and requiring time-consuming protective measures post-construction, which compromise safety and efficiency.
Innovation Solution
An embedded access assembly is installed during slab pouring, featuring a sleeve with a flange and bolt holes, allowing for temporary and permanent covers that create a waterproof seal, reducing accidents and simplifying the construction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If open access holes are formed into the raised slab for equipment accessibility, then maintenance and upgrades can be performed, but safety hazards increase due to objects falling through and tripping risks
Solution Approach 1:
The patent applies preliminary action by installing embedded access assemblies with flanges and covers during the slab pouring process itself, before the slab is fully cured and before any construction work begins. This pre-installation eliminates the need for later hole-cutting operations and ensures safety covers are already in place, preventing both equipment access hazards and tripping risks from the outset.
Solution Approach 2:
The patent uses an intermediary approach by introducing flanged access assemblies as intermediate structures between the slab and the equipment. These assemblies provide controlled access points with removable covers that can be securely fastened, allowing equipment maintenance while preventing objects from falling through open holes and eliminating tripping hazards from exposed edges.
2Object-affected harmful factors
If plywood layers are laid down to cover open access holes during construction, then safety is improved, but construction time increases and additional removal work is required
Solution Approach 1:
The patent eliminates the need for temporary plywood covering by performing preliminary installation of permanent flanged access assemblies with integrated covers during slab pouring. This pre-installation removes the safety hazard without adding construction time, as the covers are part of the permanent structure rather than temporary protective measures that must be installed and later removed.
Solution Approach 2:
The patent replaces disposable temporary plywood covers with permanent, reusable flanged access assembly covers that are integral to the slab structure. These permanent covers eliminate the need for repeated installation and removal of temporary protective measures, saving construction time and eliminating the waste associated with disposable plywood layers.
3Ease of operation
If conventional covers are installed over access holes with single sealing, then access holes are covered, but waterproofing reliability is insufficient
Solution Approach 1:
The patent applies local quality by providing enhanced sealing at the critical interface between the access assembly flange and the slab. The flanged design creates a localized sealing region where the flange perimeter contacts the slab surface, forming a dedicated waterproof barrier at the most vulnerable point where water and debris could penetrate, rather than relying on a single seal at the cover edge.
Solution Approach 2:
The patent improves waterproofing reliability through preliminary sealing by applying sealant to the flange perimeter before the slab is poured. This pre-application ensures that the sealing material is properly positioned and bonded to the flange before concrete placement, creating a more reliable waterproof barrier than post-installation sealing of conventional covers.
Data Source
AI summary
An embedded access assembly (1) that may be installed when a raised slab (2) is poured. The embedded access assembly of the present invention provides a temporary safety cover that may be replaced after the raised slab is cured and replaced with a raised upper assembly having a permanent removable cover plate.