What differentiates the master builder approach prior to the Renaissance from later approaches? Projects do not depend on individual knowledge but leverage the total knowledge of the team. The engineering and construction roles dominated projects because architectural designs were so simple. The architect and engineer roles are clearly separated into separate project phases. Knowledge is confined to particular individuals and not shared or formalized into a recognizable set of standards.

Design-Build, though not new as a delivery method for building projects, appears to be on the rise. Traditionally known as the Master-Builder method, it is a means of building where one party holds responsibility for both the design and the construction. The Master-Builder method was the only method before the now ubiquitous design-bid-build project structure. The Romans for example, famous for their roads, aqueducts, and amphitheaters, did not design a project, bid it out to subcontractors, and then select the low bidder to build it, but rather designed and built structures in a collaborative, somewhat simultaneous fashion. In building a house for a client during Colonial times, one party, such as a master carpenter, was responsible for delivering the general layout and exterior details, selecting structural members, and completing construction. In this way, the carpenter acted as the architect, engineer, and builder simultaneously. The concept of design, bid, and build arose out of the natural specialization of the architect, engineer, and builder in the post-1850s world, where modern structural engineering was born and separated from architecture, and architects and builders fully separated as distinct and separate entities.

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the clapeyron equation (also called the clausius-clapeyron equation) relates the slope of a reaction line on a phase diagram to fundamental thermodynamic properties.

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