Study of Change Orders in Design-Build-Maintain Projects of the XXI Century Schools in Puerto Rico

Variations and change orders are inevitable in the course of implementing a construction investment project. It can appear throughout the project from the design phase to the construction, acceptance, and completion of the project. This change affects more or less the schedule, quality, and cost of the project. On the other hand, variations and changes orders may also cause disputes and conflicts among project stakeholders. In order to overcome this issue, this paper presents critical the factors which need to be addressed and used for change orders in design-build projects in Vietnam. The results showed that written instructions, variation value, and scope of variation are the three most important factors used in the variation management process in design-build projects in Vietnam.

Download Full-text

WORKSHOP : Collective Architectures

Cross Americas: Probing Disglobal Networks- Papers ◽

10.35483/acsa.intl.2016.16 ◽

2016 ◽

Author(s):

Yazmín M Crespo Claudio ◽

◽

Omayra Rivera Crespo

Keyword(s):

Puerto Rico ◽

Round Table ◽

Urban Spaces ◽

San Juan ◽

University Of Puerto Rico ◽

City Wall ◽

Catholic University ◽

Design Build ◽

Architecture And Design ◽

Historic City

A design-build workshop organized by Taller CreandoS in Encargos a collective founded by four female architecture professors; Yazmín M. Crespo, AndreaBauzá, Irvis González y Omayra Rivera, at La Perla, a community outside the northern historic city-wall of old San Juan, Puerto Rico. Together the professors share interests to revitalize deteriorated and abandon urban spaces with ephemeral interventions and participative workshops in an effort to redefine the conventional way of understanding the professional practice of architecture. The workshop invited students from the three architecture and design schools in Puerto Rico; Polytechnic University of Puerto Rico, University of Puerto Rico School of Architecture, Pontifical Catholic University of Puerto Rico and the school of Visual Arts in Old San Juan to work together with international architecture collectives Todo porla Praxis from Madrid, Spain; Arquitectura Expandida from Bogotá, Colombia; and FG Studio from New YorkCity in three design-build projects together with the community. The workshop included lectures by the three international architects’ collectives, a design charrette, community presentations, final review, a round table and construction of the interventions from August 31to September 7, 2013.

Download Full-text

International Nature of the Tren Urbano Project in San Juan, Puerto Rico

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/1704-02 ◽

2000 ◽

Vol 1704 (1) ◽

pp. 10-12

Author(s):

J. William Vigrass ◽

Sergio L. González

Keyword(s):

Puerto Rico ◽

Power Supply ◽

Phase 1 ◽

The United States ◽

Transportation Systems ◽

San Juan ◽

Rapid Transit ◽

Train Control ◽

Design Build ◽

Rail Rapid Transit

An overview of the Tren Urbano project in San Juan, Puerto Rico, is presented. Phase 1 will be a 17-km rail rapid transit line from Bayamon to Sagrado Corazon in metropolitan San Juan. The line is standard gauge, third-rail-powered, 750-Vdc, rail rapid transit, fully grade-separated. An initial fleet of 64 cars was ordered, and an option for 10 more has been exercised. The project has been bid as a design-build-operate-maintain effort, with Siemens Transportation Systems, Inc., as the prime contractor. Work has been divided into six segments and bid by local contractors. Through the Systems Turnkey and Test Track contract, Siemens is responsible for all systems elements, including cars, power supply, signals, train control and communications, the yard and shop, and about 2 km of main line with two passenger stations. Systems elements are described, with emphasis on their origin in various countries in addition to the United States. The need for Buy America compliance is mentioned. Some car-borne equipment was designed and initial units were built overseas, with most production being done in U.S. plants owned or contracted by the suppliers. By using international sources, Siemens was able to be the lowest bidder and yet provide a quality system to meet the contract requirements.

Download Full-text