一种recent study by Dodge Data & Analytics provides insights into the impact that delivery systems have on projects from the perspectives of owners, architects and contractors. The research, published in the "Project Delivery Systems SmartMarket Report," primarily focused on three delivery systems: design-bid-build, design-build and construction management at-risk (CM at-risk). The findings reveal that there is no single, well-established delivery system most likely to improve project results across the board.

For example, most owners reported strong performance on budget and schedule for each system, with only minor differences well below the margin of statistical difference.

建筑师和承包商对交付系统的好处有很大不同的看法。对于从预算和计划到流程改进和降低诉讼风险的11个福利，建筑师在交付系统及其福利之间被广泛分配。实际上，不到40％的人说三个系统中的任何一个都比其他系统更好。另一方面，承包商的比例最高，总是选择设计建造作为实现这些好处的最佳系统。

尽管任何主要参与者都可以领导设计建造团队，但美国大多数D-B项目都是由承包商主导的。18luck官网这意味着承包商在设计建造项目的整个生命周期中更加参与。另一方面，建筑师通常从项目开始就参与其中，因此不支持一个系统而不是另一个系统。他们可以在整个项目生命周期中更容易与其他合作伙伴互动。

一种nother finding suggests that the degree to which a system enhances a firm's ability to participate in the project means that the system is more positively perceived. Sixty percent of owners report being highly satisfied with their CM at-risk projects, compared with 40% or less for the other two delivery systems, despite similar findings for performance on cost and schedule among all three systems. This may result from the role of the owner advocate served by CMs, even in a CM at-risk project, which keeps the owner's interests more active throughout a project.

集成项目交付

The study also looked at the experiences of those familiar with integrated project delivery (IPD), which represented about one quarter of the total participants.

一份完全集成的项目交付合同旨在鼓励所有主要参与者（包括所有者，建筑​​师和承包商）在整个项目生命周期内进行沟通和协作。与其他交付系统的关键区别在于，IPD试图在整个团队中分配项目风险，而不是按责任分配风险。虽然该研究确实发现行新利luck业中的许多人都说缺乏公平，标准化的合同是更广泛使用IPD的最大障碍，但这种风险奖励的分配是通过防止玩家在事情时陷入责备游戏来进行的强化合作和沟通出问题。

一种mong contractors, the degree to which firms report being familiar with IPD is contingent on the size of the firm, with far fewer respondents from construction companies of less than 50 employees reporting being familiar with IPD (9%) compared with those of more than 50 employees (40%).

鉴于这种差异，大型公司的IPD用户还希望看到其采用差异，而与较小的公司相比，更多的较大公司（47％）希望在未来三年内更广泛使用IPD（27％）。

IPD合同的好处