Construction Institute

Abbreviation for Bench mark which is a permanent location to be used to dimension from

A portion of contract work that the contractors shall make part of the bid however the owner may elect to complete the work or not at the bid opening. Also known as Add Alternate

A layer of material placed for support below asphalt paving

Abbreviation for Bottom of Footing

A circular sample of soil used to establish geotechnical properties

Soil/gravel taken from one location and used as fill at another location

Best Practice Model

Typically, a vertical wall in a formwork.

Abbreviation for butterfly valve