Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO DBP:2008
• Năm ban hành / Publication date: 2008
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: AASHTO Guide for Design-Build Procurement
• Số trang / Page: 206

Phạm vi áp dụng / Scope of standard

Introduction

Guide Overview

This Guide for Design-Build Procurement is intended to assist
state transportation agencies in procuring design-build projects,
including preparing requests for qualifications (RFQ) and requests
for proposals (RFP) and selecting the successful proposer.
Design-build procedures are rapidly evolving concurrently within
individual states. Between 1990 and 2002, approximately 300
projects representing $14 billion were proposed using designbuild
contracting under the Federal Highway Administration's Special
Experimental Project No. 14 (SEP-14) by state and local
transportation agencies in 31 states, the District of Columbia, and
the Virgin Islands. A survey of State DOTs in late-2007 revealed
that over 700 design-build projects have been proposed, are active,
or have been completed, and the number of state agencies
participating in design-build delivery has increased to 39 (see
Figure 1.1). Four of these states-Florida, Ohio, Pennsylvania, and
Texas-have experience with 75 or more projects.

This Guide is based on best practices from experienced state
transportation agencies and other public sector agencies. This
Guide is intended to be flexible for varying project types, sizes,
and procurement requirements. Finally, this Guide promotes a common
design-build "vocabulary" for better dissemination of lessons
learned and incorporation of continuous improvement.

It is important to note that this Guide is not intended to be a
"procedures" manual. While a procedures manual provides a
step-by-step process, this Guide supplies an overarching
description of the strategies and methods for successful
design-build implementation. Each state has its own laws and
regulations that vary significantly between agencies in their
execution of design-build. Therefore, this Guide is generically
written for broad application, but it also offers specific examples
of agency practices to assist with process implementation. While
this Guide focuses on those transportation agencies that have less
experience with design-build procurement, it also provides details
on selected critical topics so it can be a valuable supplement to
experienced agencies as well.

an overview of this Guide's approach to writing a successful
design-build RFP and forms the basis for this Guide. While the four
step approach of defining project goals, allocating risk, planning
the evaluation, and writing the contract documents may seem overly
simple, these four elements, and the order in which they are
performed, are critical to project success. Transportation agencies
must not overlook or improperly communicate these critical concepts
when procuring design-build contracts. Following these four steps
will 1) align the agency's team while writing the procurement and
contract document, 2) align the design-builder's team with the end
customer's needs when proposing on and performing the work, and 3)
provide the most efficient use of both the agency's and the
design-builder's resources.

This Guide is intended to be used as a reference when developing
design-build project RFQs and RFPs. It also may be used as a
reference for developing agency design-build manuals or
establishing design-build policy. Chapters 1 through 4 will be
helpful for all agency team members as an introduction to
design-build. Chapters 5 through 7 and the Appendixes will be most
helpful for those team members developing the design-build
contract.