Section 27 wants companies involved in bid-rigging to donate toilets to Limpopo schools.
Roger Jardine will take the helm in February but Kuben Pillay will work by his side until December.
The city is working with government and the CIDB to clean up the construction industry.
Roger Jardine says the construction sector wants justice for what has happened to the industry.
Roger Jardine earlier announced his resignation, shortly after emerging from the construction sector scandal.
Union UASA is worried construction firms implicated in collusion will fire workers to pay fines.