PSI - Issue 22

Rosário Oliveira / Procedia Structural Integrity 22 (2019) 151–159

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Rosário Oliveira/ Structural Integrity Procedia 00 (2019) 000 – 000

project management models, such as Earned Value Management (EVM), in works of small size and complexity, contribute in a positive and simplified way to the monitoring and control of the schedule and cost performance. To sum up, the case study is based on the execution of the rehabilitation and conservation work of facades of a residential and trade building, located in the north of the country. It is a building with 2 cellars and 4 elevated floors, with a total area of intervention in facade of 6 942m2. Table 2 summarizes the general characteristics of the contract. Table 2 – Case study general characteristics Rehabilitation Work Building Facade Conservation Location Póvoa Varzim – North of Portugal Hiring system Contract for Construction Type of contract Global Price Value of the contract € 699 800 Duration of the work 12 Months The facade cladding of the building to be conserved was cracked and aged, therefore requiring rehabilitation and conservation work. Conservation work indicated the need for removal, treatment of cracks and the application of a new coating to the ETICS system. The windows frame exterior lacquered aluminum were cleaned and sealed, and the sills of the doors were replaced with new elements, maintaining the same shapes and colors of the facade elements. The tasks of the rehabilitation and building facade conservation were: 1) Shipyard, seals and preparatory work; 2) Scaffolding for access to the facade; 3) Removal of existing coating; 4) Cleaning and washing the facade; 5) Treatment of cracks and expansion joints; 6) Facade treatment; 7) Frames and sills; 8) Rehabilitation of storm water network. In the initial phase a budget and a schedule to establish the commitment of time and cost with construction owner was projected. Based on the budget and the baseline, the financial schedule which shows the flows of the values planned (PV) for the execution of the work was drawn up. Fig. 1 shows the financial schedule with the planned values used as a reference for measurement records corresponding to the work performed monthly.

Fig.1. Financial Schedule with PV The work started in January 2018 and monthly measurements were made with Earned Value (EV) per percentage of work done on site, throughout the execution time. Fig. 2 shows the measurement of the works done on site with the earned value (EV) monthly and accrued.