Use and re-use of formwork: safety risks and reliability assessment

Details

• Personal Author:
  Barbosa A ; Das A ; Gambatese, John
• Description:
  The construction and placement of temporary formwork for casting concrete continues to be a high risk activity, especially in regards to fall injuries and fatalities. Falls may occur as a result of the formwork collapsing under extreme and repetitive loading conditions experienced on the construction sites. A need for research in this area is especially evident in regards to the re-use of formwork. The ASCE Design Loads on Structures During Construction manual indicates that formwork designers need to be "aware that temporary structures used repeatedly are and that safety factors "need to be lower than those used for ordinary strength design to compensate for this loss of capacity." However, the ASCE manual does not provide guidance on what the lower safety factors should be. Similarly, when considering the appropriate safety factors to apply when re-using formwork many times, ACI indicates that ten form uses was discussed as the dividing line between "limited" and "considerable" re-use, but that no consensus was reached since this value is not based on any formal research data. In addition, data collected in the present research study does not indicate that the ten (10) re-uses has scientific or empirical support. [Description provided by NIOSH]
• Subjects:
  Construction Industry Laboratories Manufacturing And Industrial Facilities Occupational Health Safety Wood
• Keywords:
  Concretes Construction Construction-equipment Construction-industry Construction-workers Equipment-reliability Laboratory-testing Manual-materials-handling Materials-testing Performance-capability Structural-analysis Task-performance Testing-equipment Wood-products Work-practices

  More +
• Publisher:
  CPWR-The Center for Construction Research and Training
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Book
• Place as Subject:
  Maryland ; Oregon ; OSHA Region 10 ; OSHA Region 3
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-44
• NIOSHTIC Number:
  nn:20046897
• Citation:
  Silver Spring, MD: CPWR-The Center for Construction Research and Training, 2014 Sep; :1-44
• Contact Point Address:
  John Gambatese, School of Civil and Construction Engineering, Oregon State University, 101 Kearney Hall, Corvallis, OR 97331
• Email:
  john.gambatese@oregonstate.edu
• Federal Fiscal Year:
  2014
• NORA Priority Area:
  Construction
• Performing Organization:
  CPWR - The Center for Construction Research and Training, Silver Spring, Maryland
• Peer Reviewed:
  False
• Start Date:
  20090901
• Source Full Name:
  Use and re-use of formwork: safety risks and reliability assessment
• End Date:
  20240831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ac709db90db18adc335c0b7a1da702d5f235e67a7c563ff9c52c0a5acae6eae3598895d2e4ab9a52444dcf7e8da88c433e2a2d9a9c4567b20dd8fc24e324d5ae
• Download URL:
  https://stacks.cdc.gov/view/cdc/202168/cdc_202168_DS1.pdf
• File Type:
  [PDF - 1.69 MB ]