Some of the most common reasons for change orders include: Inaccurate specifications in the original designs or contract. Ambiguous or inaccurate drawings. Unforeseen conditions at the job site, such as obstructions that could not be planned for because of the details, weathering, materials, time and labor.
Change order directive by builder or Project Manager and to be approved by architect or engineers by party when PM submitted for RFI and an additional information. All coordination must be review and approved by architect or engineers with the consent of the owner.
The four most common types of change orders in construction are:
lump sum (when the change can be quantified in price);
zero cost (no change in price);
time and material (cost cannot be estimated);
and unitary cost (a change in scope that can be defined by measurement units
What is the change order process?
The change order process is typically initiated by one or more of the following documents:
a Proposal Request
an Architect’s Supplemental Instructions (“ASI”)
a Construction Change Directive (“CCD”)
a Request for Information (“RFI”)
a request for a change order
Why matters and how these changes are critical and required many hours from architects and engineers. Per General Condition A201 General Contracting by AIA.
Also BASIC OF CONSTRUCTION MANAGEMENT 101
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