Meaning of lag in the construction industry

In the construction industry, the term ‘lag’ can mean:

• ‘…the minimum necessary lapse of time between the finish of one activity and the finish of another overlapping activity.' Ref The Society of Construction Law Delay and Disruption Protocol, 2nd edition, published in February 2017 by the Society of Construction Law (UK).
• ‘…the amount of time required between the start or finish of a predecessor task and the start or finish of a successor task.’ Ref The Society of Construction Law Delay and Disruption Protocol.
• The delay in the transmission of thermal conditions between one side of the fabric of a building and the other.
• The process of installing insulation, in particular around water pipes to prevent freezing, or to prevent heat loss from hot water pipes. This is sometimes referred to as ‘lagging’.
• A type of screw or bolt: A heavy-duty fastener that creates its own mating thread in timber and other soft materials when tightened.

[edit] Related articles on Designing Buildings Wiki

• Activity.
• Critical path.
• Insulation.
• Negative lag.
• Pipework.
• Programme.
• Thermal conduction.
• Thermal mass.
• Types of bolts.
• Types of screws.