Modelling the choice of mode and estimation of the value of travel time savings for the case of the Rion-Antirion suspension bridge in Greece

In this paper we estimate value of time savings specifically applied to the case of the Rion-Antirion suspension bridge which will connect the Western part of Greece through the Rion-Antirion sea strait with the region of Patras and consequently with Athens providing a faster and more efficient service for the passage of the sea strait than the existing obsolete ferry system. Value of time savings are important in determining that the correct level of tolls are based not only on market-oriented values but that they also ensure revenue maximization and user acceptance. Estimation of a multinomial legit model is done for the value of time savings for business and non-business categories of travellers who can only choose between private cars and buses. Our results show that for the case of nonbusiness the value of time is about 60% of the wage rate, for the case of business, it is 85% of the wage rate

Additive Manufacturing of Concrete Structures

The main objective of this major qualifying project was to develop a pavilion structure for the WPI campus that provided an outdoor, sheltered space, using the techniques of additive manufacturing and concrete 3D printing. This was achieved through researching precedent studies, drawing inspiration from geometric origami, and making use of techniques other studies used in order to create the structure utilizing the gantry style printer specific to WPI. A printable concrete mix design was developed specific to this project, instructions on 3D printing were developed, structural analysis for the pavilion was conducted, and hypothetical heating, ventilation, and air conditioning calculations were conducted for the space