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Alashwal, A M and Fong, P S (2015) Empirical Study to Determine Fragmentation of Construction Projects. Journal of Construction Engineering and Management, 141(07).
Albert, A, Hallowell, M R, Lingard, H and Kleiner, B M (2015) Multiple Baseline Testing: Experimental Method for Drawing Causal Inferences in Construction Engineering and Management Research. Journal of Construction Engineering and Management, 141(07).
Ballesteros-Pérez, P, Skitmore, M, Das, R and del Campo-Hitschfeld, M L (2015) Quick Abnormal-Bid-Detection Method for Construction Contract Auctions. Journal of Construction Engineering and Management, 141(07).
Bowen, P, Govender, R, Edwards, P, Cattell, K and Street, A (2015) Factors Determining South African Construction Workers’ Prejudice towards and Discrimination against HIV+ Persons. Journal of Construction Engineering and Management, 141(07).
El-Gafy, M and Abdelhamid, T (2015) Impact of I/D Contracts Used for Expediting Michigan’s Road Construction. Journal of Construction Engineering and Management, 141(07).
Feng, Y (2015) Mathematical Models for Determining the Minimum Level of Voluntary Safety Investments for Building Projects. Journal of Construction Engineering and Management, 141(07).
Goh, Y M and Wang, Q (2015) Investigating the Adequacy of Horizontal Lifeline System Design through Case Studies from Singapore. Journal of Construction Engineering and Management, 141(07).
- Type: Journal Article
- Keywords: Horizontal lifeline; Fall arrest systems; Fall protection; Construction safety; Case-based reasoning; Labor and personnel issues;
- ISBN/ISSN: 0733-9364
- URL: https://doi.org/10.1061/(ASCE)CO.1943-7862.0000989
- Abstract:
Horizontal lifeline system (HLLS) is one of the most widely used fall arrest systems for mitigating the risk of work-at-height in the construction and building industry. A HLLS must ensure the maximum arrest load created during a fall arrest does not exceed the capacity of the anchors and other system components. In addition, the maximum arrest force experienced by the user of the HLLS has to be kept below 6 kN (Europe, Australia, and Singapore) or 8 kN (North America). Finally, the height clearance must be sufficient to prevent the user from hitting the ground or obstacles. To achieve these safety criteria, a HLLS should be designed using appropriate calculation methods. This study evaluated 11 HLLS designs in Singapore based on common standards. A comprehensive calculation template was developed based on energy balance method to facilitate the evaluation. It was discovered that all 11 designs were not adequately endorsed or calculated. This is a potentially dangerous situation because HLLSs are usually the last line of defense for falls from height. The study demonstrated the current competency gap in design of HLLSs in Singapore. Engineers in Singapore are not adequately exposed to the concept of fall protection engineering. Thus, many of them tend to underestimate the forces involved in a fall arrest and did not spend sufficient effort to design HLLSs. It is believed that the problem is not unique to Singapore. Four measures were proposed to close this competency gap and promote sharing of best practices internationally. First, specialized training must be provided to engineers designing HLLSs. Second, it was proposed that design guides should be more detailed so as to help engineers understand what is required in a proper design of HLLSs. Third, a case-based reasoning system (CBRS) was proposed to help engineers improve their HLLS design and at the same time accumulate an international repository of HLLS designs. The CBRS will also contain a HLLS design template to facilitate designs of HLLS and other active fall protection systems. Last, it was proposed that manufacturers should make HLLS properties and detailed information on fall arrest equipment more readily available to engineers.
Lee, S, Tae, S, Jee, N and Shin, S (2015) LDA-Based Model for Measuring Impact of Change Orders in Apartment Projects and Its Application for Prerisk Assessment and Postevaluation. Journal of Construction Engineering and Management, 141(07).
Mahalingam, A, Yadav, A K and Varaprasad, J (2015) Investigating the Role of Lean Practices in Enabling BIM Adoption: Evidence from Two Indian Cases. Journal of Construction Engineering and Management, 141(07).
Tsai, J and Chi, C S F (2015) Learning for Win-Win Collaboration. Journal of Construction Engineering and Management, 141(07).