Temporary Works in Construction
Monday, 02 July 2018
Posted by: Ernest Roper
In the past five years, the construction industry experienced several high profile structural collapses dating back to Tongaat Mall in 2013. They include the Meyersdal collapse in 2014, the Grayston Bridge collapse in 2015 and most recently the Wentworth collapse in Durban, in March 2018.
The Construction Regulations broadly defines Temporary Works as follows:
“Means any falsework, formwork, supportwork, scaffold, shoring or other temporary structures designed to provide support or means of access during construction work.”
It is important to note that scaffolding has been included in this definition and that CR 16 clearly states that scaffolding must conform to the SANS 10085. The regulation further states that a designer must be appointed to:
- This person would provide the design to the contractor and would make any alterations required
- This person would inspect the works in accordance with the designer’s layout
- The inspector will give written permission to cast concrete
- The inspector will give written permission to strip formwork
- The inspector will inspect the formwork
- Before a pour or any loads are imposed, i.e. before the placement of re-enforcing steel
- During the pouring of concrete
- Daily whilst it is still in place
- Should also check the back propping until it is removed
- The person appointed to inspect will more than likely also be tasked with approval
Whilst the regulation stipulates that the appointed designer must take care of the three items listed above, the industry norm is for different competent people to be appointed to perform each function individually, provided that they work together as a team with a clear goal of erecting safe temporary works. Once again, this is an industry norm and is not supported by all parties, however the Department of Labour has stated in various forums that they would happily accept three separate appointments.
Contractors also need to appoint a supervisor or supervisors to oversee the installation of the temporary works. In the case of scaffolding, the SANS code and CR 16 must be consulted, and contractors must comply with the requirements of the SANS code and sub-regulation.
The contractor also needs to do the following to comply with the legislation:
- Ensure that all persons erecting temporary works are sufficiently trained to work with the material being used
- All equipment needs to be examined for suitability prior to use. This means all components must be checked before being re-used.
- All temporary works structure adequately erected, supported and braced
- Temporary works structure done according to the drawings
- Upon casting, the temporary structure is left in place until the concrete has acquired sufficient strength to support it own weight
- Secure deck panels from dislodgement
- Prevent persons from slipping on release agents
- Provide safe means of access and egress to the temporary works
Temporary works will always remain a high-risk activity but proper planning and management of all the processes required will significantly reduce the chances of failure.
Neil Enslin | Occupational Health and Safety Manager
References: Occupational Health and Safety Act No 85 of 1993 and its Regulations, Master Builders South Africa Auditing System