Acceleration and Deflection Analysis for Class C Edge Protection Systems in Construction Work

Pomares, Juan Carlos; Irles, R.; Segovia, E.

doi:10.1061/(asce)co.1943-7862.0000870

Cited by 7 publications

(7 citation statements)

References 8 publications

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“…None of the lanyards tested could arrest the mass at forces lower than 6 kN. According to the PPE extensions drawn in the Figure 12, an elongation of 800 mm is necessary; this is a similar value to the deflection studied by the authors for edge protection systems in construction work [15].…”

Section: Fall Factor 2 Tests (Ff = 2)supporting

confidence: 57%

“…However, none of these four lanyards (PT1 and PT2) were able to retain the mass at tolerable forces, lower than 8 kN. Restricting this study to only those having a length of about 1.5 m, prototypes (PT1 and PT2) group (Tests 9, 10, 11, 12), the results are better than those obtained in the commercialized (T1 and T2) group (Tests 13,14,15,16), for the reason that in the first group, only one prototype snapped, while in the second group, three commercialized lanyards failed. In addition, among those that retained the load, the maximum arrest force presented low values in the first group.…”

Section: Fall Factor 2 Tests (Ff = 2)mentioning

confidence: 79%

“…Previous collective protection equipment studies, such as the one carried out by [15] that complements PPE is also considered, even though its approach is presented from a different perspective. In this general context, PPE against falls from a height, in particular fall arrest systems, have become a must to control the safety of workers [16,17] where each of the components in the system is critical to protect the worker.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization on Personal Fall Arrest Systems. Experimental Dynamic Studies on Lanyard Prototypes

Pomares

Carrión

González

et al. 2020

IJERPH

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Tens of thousands of fall-from-height accidents take place at construction sites every year. These types of accidents range from minor to fatal, causing a significant financial burden to enterprises, personal and family traumatic experiences, high medical costs, as well as hard compensation claim settlements. It makes sense then, that some sort of effective personal protective equipment (PPE) be devised to stop these types of accidents from happening. This article aims to explain how PPE can be used to minimize personal injury and the costs implied. The main contribution of this study is that the prototypes made with dynamic ropes and terminals knotted-without an energy absorber-could safely retain falls. Results show that standards EN 354 and EN 364 need to incorporate dynamic test requirements, for the reason that a high loading rate significantly reduces the resistance in static tests that manufacturing companies claim they have. Surprisingly, more than 90 percent of work at heights use PPE without any absorber. Finally, this study calls for the need to accurately determine the dynamic response of PPE in order to further advance in improvements of these fall arrest systems with no energy absorber.

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Section: Fall Factor 2 Tests (Ff = 2)supporting

confidence: 57%

Section: Fall Factor 2 Tests (Ff = 2)mentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization on Personal Fall Arrest Systems. Experimental Dynamic Studies on Lanyard Prototypes

Pomares

Carrión

González

et al. 2020

IJERPH

Self Cite

View full text Add to dashboard Cite

show abstract

“… Invest in green technologies for waste management, water and energy savings, as well as their sources. Train personnel in sustainable construction, health and safety practices and sensitize them with ongoing environmental education, e.g., as in [ 44 , 45 ]. Maintain collaboration among all project stakeholders and ensure that they master the benefits of sustainability and circular economy.…”

Section: Discussionmentioning

confidence: 99%

An Inspection of the Life Cycle of Sustainable Construction Projects: Towards a Biomimicry-Based Road Map Integrating Circular Economy

Beermann

Austin

2021

Biomimetics

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According to the National Energy Plan in Panama, the construction sector is one of the most prosperous and impactful sectors in the economy and it is expected to expand due to population growth by almost 300% by 2050. However, this sector must work on the transition towards sustainability and resilience in the face of climate change, since its growth implies a high consumption of resources and the contribution of greenhouse gases. The need to establish practices and strategies that embrace the dimension of sustainability and a circular economy is imminent. Currently, there is little guidance in the reference framework beyond certifications in planning, management and evaluation tools for its implementation. Different studies vary in the number of phases and considerations for projects. Therefore, the present work proposes the development of a unified road map, with defined phases, practices and indicators based on principles inspired by nature, such as biomimicry (Greek words: “bio” means life and “mimesis”, imitation), and focuses on a circular economy, validated by construction professionals, where strengths, opportunities, skills and threats are identified with a high level of acceptance. This contributes to strengthening the field of sustainable construction project management and a precedent for Panama.

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“…To improve safety conditions regarding accidents involving falls, previous studies [1][2][3][4][5][6] have been conducted, using numerical models of EPS built with finite elements technique.…”

Section: Introductionmentioning

confidence: 99%

Previous numerical studies with deformable ballast on body impacts against building edge protection systems

Irles¹,

Carrión²,

González³

2016

Int. J. CMEM

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Recent studies with numerical models regarding edge protection systems (EPS), class C according to standard EN 13374, showed that some requirements are inadequate for human safety. This problem mainly arises when a person is injured by falling directly against the EPS supports.To analyse this subject, three series of numerical models, in accordance with EN 13374, have been produced. The paper describes these studies, which have been carried out using straight supports, different weight ballasts and also a deformable ballast.In the first series, impacts against straight supports have been analyzed and a standard EN 13374 ballast has been used. These first studies showed too many high impact factors on the ballast. The obtained values are absolutely inadequate and dangerous to the integrity of the human body. The second series was conducted to know how different weights and shapes of ballast affect the maximum accelerations suffered by the human body. Finally, in the third series, a more deformable ballast has been used to simulate impacts of workers against straight supports, nearest to the real behaviour of a human body.Results confirm and measure an excessive impact factor suffered by the falling person. Mainly in the first series, with direct impacts of standard ballast against straight supports, acceleration values have been generated that could seriously injure the body or even could kill workers.The second series showed that different weights and shapes -cylinder or sphere -of ballast affect the acceleration values calculated.Finally, in the third series, the deformable ballast has achieved results truer than previous studies with the more rigid ballast established by EN 13374.

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Acceleration and Deflection Analysis for Class C Edge Protection Systems in Construction Work

Cited by 7 publications

References 8 publications

Optimization on Personal Fall Arrest Systems. Experimental Dynamic Studies on Lanyard Prototypes

Optimization on Personal Fall Arrest Systems. Experimental Dynamic Studies on Lanyard Prototypes

An Inspection of the Life Cycle of Sustainable Construction Projects: Towards a Biomimicry-Based Road Map Integrating Circular Economy

Previous numerical studies with deformable ballast on body impacts against building edge protection systems

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