Post Frame Roof Assembly Lifting Method
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Solution Overview
Problem
Conventional building construction methods, particularly for post-frame buildings, pose safety risks to workers due to high fall heights while attaching roofing components, leading to increased corporate safety costs and reduced labor efficiency.
Innovation Solution
A method and system that involves constructing the roof assembly near ground level, using a removable safety net system and a hydraulically powered lifting apparatus with a control system to raise the roof assembly to a predetermined height, while pivoting support assemblies to secure columns to foundation stubs, thereby minimizing fall risks and enhancing safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional construction methods are used to attach roofing components at high elevations, then construction can proceed with traditional techniques, but worker safety is compromised due to fall risks of ten to twenty feet
Solution Approach 1:
The roof assembly is constructed at ground level before being lifted to its final elevated position. This preliminary construction at a safe elevation eliminates the need for workers to perform high-elevation tasks during roof assembly, directly addressing the fall risk hazard while maintaining construction feasibility
Solution Approach 2:
Instead of constructing the roof at its final elevated position and working from there, the invention inverts the sequence by building the roof at ground level and then lifting it into place. This reversal of the conventional construction sequence eliminates the harmful fall risk while achieving the same construction outcome
2Reliability
If roof assembly is constructed at ground level and then lifted, then worker safety is improved by reducing fall heights, but device complexity increases due to lifting apparatus requirements
Solution Approach 1:
A hydraulic lifting apparatus is employed to raise the roof assembly from ground level to its final position. The hydraulic system provides controlled, powerful lifting capability that can handle the weight of the roof assembly while maintaining operational safety, accepting the added device complexity as a necessary trade-off for eliminating fall risks
Solution Approach 2:
The lifting apparatus serves as an intermediary mechanism between the ground-level constructed roof assembly and its final elevated position. This intermediary device enables the safe transfer of the roof structure without requiring workers to be present at high elevations, justifying the increased device complexity through significant safety improvements
3Reliability
If roof assembly is constructed at ground level, then safety is improved, but construction time increases due to additional lifting and positioning steps
Solution Approach 1:
By constructing the roof assembly at ground level before lifting, the invention performs preliminary work in a safe environment where workers can efficiently assemble components without safety concerns. This preliminary action at ground level actually accelerates the assembly process compared to working at elevation, offsetting the time required for the lifting operation
Solution Approach 2:
The lifting operation is executed as a rapid, coordinated action that transitions the roof assembly from ground level to final position in minimal time. This rushing through of the lifting step minimizes the time addition to the overall construction process while maintaining the safety benefits of ground-level assembly
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces fall heights, enhances worker safety, decreases corporate safety costs, improves labor efficiency, and increases construction quality by allowing safer and more efficient construction of post-frame buildings.
Implementation Method 1
The roof assembly can then be raised off of the ground by a lifting apparatus
Implementation Method 2
The roof system can will be coupled to one or more columns having a hinge. Upon the roof system being lifted, the hinged columns can fold under the roof system and then be coupled to one or more anchor points
Data Source
AI summary
A construction method for building a post frame building by first constructing the roof near ground level. The roof assembly can have a removeable safety net system and be coupled to a plurality of support members, such as columns having a hinge connection to the roof assembly. Upon the roof system being lifted, the hinged columns can fold under the roof system and then be coupled to one or more anchor points established in the ground. The roof system can be raised into position at a pre-determined height using a lifting apparatus, such as a hydraulic lift.