Construction Evaluation (CE) Flashcards
(151 cards)
Design-Bid-Build
“Typical” delivery method. Architect assembles a set of drawings, Contractors bid on it using estimates from various subcontractors, the lowest bid typically is awarded the project.
Liability Crisis of the 1980’s
Explosion of lawsuits caused architects to restructure their contracts to mitigate risk and put more liability on the contractor. Large complex projects brought on more disputes between architect and contractor so owners gravitated toward the single-entity design-build model.
Fast-Track
Multiple design packages that are bid as design is completed (called bid packages). Construction Managers are typically brought on to help control this complex project.
Credit Crunch of the late 1970’s
High cost of borrowed money accelerated design-bid-build and created the Fast-Track delivery method to get projects done quickly and at a low cost to the owner.
Integrated Project Delivery (IPD)
Focuses on increased collaboration with all parties along with a more intense presence of BIM.
CM-Advisor
Manages constructibility and cost to the owner but is not the builder.
Owner contracts with Architect, Contractor, and Construction Manager who acts as an advisor (and is not typically contracted directly with arch & contractor).
CM-Agent
Early construction consulting and may help assemble the construction trades but is not the builder.
Fee is typically fixed and assumes no risk of the actual construction cost. Owner assumes savings and overruns.
Owner hires a Construction Manager who contracts directly with the Architect and Contractor but reports to and acts as an agent to the Owner.
CM-Constructor
Begins as a constructibility and cost advisor and is eventually the builder.
Fee is typically a GMP which is usually based off an early set of design documents (DD). CMC is at risk for overruns and benefits from savings.
Similar to the DBB method but the contractor is also the Construction Manager.
Design-Build (Standard)
Typically a contractor that subcontracts with an architect directly. This means the owner has no agent or design advisor for building performance and quality.
Typically fixed fee for both construction and design services.
The owner contracts with a single architect/contractor entity.
Design-Build (Bridging)
Consists of a design architect who establishes design concept and performance parameters and a production architect who generates construction documents and builds the specs. Drawings are passed on to the production architect but the design architect stays on as an advisor to the owner through the remainder of design and construction.
Owner contracts with a design architect and also hires a single architect/contractor entity to carry out construction.
Delivery method if COST is the biggest driver
Design-Bid-Build
Delivery method if QUALITY is the biggest driver
DBB, Negotiated Select Team
Delivery method if SCOPE is the biggest driver
DBB, Cost Plus Fixed Fee
Delivery methods if RISK is the biggest driver
CM-Advisor
CM-Agent
Design Build (standard & bridging)
Delivery method if TIME is the biggest driver
CM-Constructor
In what delivery methods is construction cost determined after design?
Design-Bid-Build
Negotiated Select Team
Design Build (Bridging)
CM-Constructor
In what delivery methods is construction cost determined before design?
Design Build (Standard)
In what delivery methods is construction cost determined at completion?
Cost Plus Fixed Fee
CM-Agent
Negotiated Select Team
A variation of DBB in which the contractor is selected early. Price is determined after design is complete and subcontractors are selected. Great for complex projects.
Cost Plus Fixed Fee
Contractor is awarded the cost of labor and materials plus a fixed fee that does not vary depending on construction cost. There may be incentives baked into the contract to complete the project early or under budget. (Good for contractor - benefits from being under budget and early but does not suffer if project is extended or over budget).
Struggles with forming an IPD Team
It is difficult to find a fit IPL (IP Leader). Mistrust between architects and contractors leads each party to disbelieve thier trade will be considered equal in the process if one were to lead.
Characteristics of an ideal IPL
- Good listener
- Proactive
- Address issues head on
- Manage from the middle (highly engaged)
- Prefer dialogue over debate
- ## Comprehensive responder
Reasons for choosing CMc
Agressive schedule, budget, and unknown scope.
A133
Base agreement between owner and CMc