This thesis aims to investigate which elements of the design process in production that have key features for successful progress of production and how these are regulated in the developed production model, the NCC Project planning, NCC Construction Sweden AB. A study of NCC Project planning used in construction output in the department of Mälardalen has been carried out and proposals for implementation of the model has been proposed. The work is carried out through interviews and archival analysis of NCC's business system.  NCC Project planning is a production model based on LEAN Construction's governance model pull-planning and 5S principle. By means of the production model desired involvement in the work and control over the work process increase. In the current situation is not production model to the extent that the company wishes and therefore the reasons why mapped and solutions to the problem have been proposed.  One of the biggest reasons that the NCC Project planning is not used in practice is the lack of commitment from supervisors, managers and production managers. As a solution to the problem suggested mentors, field trips and custom training for production management model.

El presente trabajo de investigación denominado “Propuesta de Mejora en la Planificación de Obra del Programa Nacional de Vivienda Rural (PNVR) Aplicando Pull Planning” se ha desarrollado en atención a la problemática para cumplir con los cronogramas de entrega de viviendas proyectadas según convenios desarrollados en zonas de pobreza y extrema pobreza del territorio nacional. Si bien es cierto, se ha venido construyendo módulos habitacionales con éxito desde la creación del PNVR en 2012, la eficiencia en la entrega no ha sido la esperada, generándose retraso e inconformidad por parte de los beneficiarios del programa. El PNVR nació a raíz de la necesidad de mejorar la calidad de vida de la población anteriormente descrita y lograr un acercamiento a los servicios básicos e inclusión social de las poblaciones con mayor dificultad para el desarrollo. El presente trabajo de investigación busca aportar en la mejora de la planificación del cronograma de obra, detectando restricciones en el proceso y proponiendo oportunidades de mejora para la continuidad del programa que beneficia a gran parte de la población nacional. / The present research work described "Proposal for Improvement in Work Planning of the National Rural Housing Program (PNVR) Applying Pull Planning" has been developed in response to the problem to meet the schedules of delivery of housing projected according to agreements developed in areas of poverty and extreme poverty of the national territory. Although it is true, we have been successfully building housing modules since the creation of the PNVR in 2012, the delivery efficiency has not been as expected, generating delay and disagreement on the part of the program beneficiaries. The PNVR was born as a result of the need to improve the quality of life of the population described above and achieve an approach to basic services and social inclusion of populations with greater difficulty for development. This thesis seeks to contribute to the improvement of the work schedule planning, detect restrictions in the process and propose improvement opportunities for the continuity of the program that benefits a large part of the national population. / Trabajo de investigación

El presente trabajo propone la aplicación de lineamientos y herramientas de la filosofía Lean Construction para lograr una adecuada planificación, ejecución y control de proyectos de construcción de edificaciones multifamiliares con el objetivo de minimizar y prevenir los diversos problemas en obra, que no sólo repercuten en costo, tiempo y calidad sino también en la imagen de la empresa. A través de estas herramientas se busca lograr disminuir los retrabajos, el incumplimiento de calidad, mejorar la rentabilidad del proyecto y disminuir la cantidad de observaciones de post venta para lograr la satisfacción de los clientes del caso de estudio Precursores. Finalmente se espera que con el presente trabajo se logre tener un mejor enfoque de gestión de proyectos multifamiliares y que sirva como punto de partida para que empresas constructoras y profesionales logren sus objetivos superando la expectativa de sus clientes / Abstract: This research work proposes the application of guidelines and tools of Lean Construction philosophy to achieve adequate planning, building and control of multi-family building projects with the objective of minimizing and preventing various problems at work, which only affect in cost, time and quality but also in the image of the company. Through these tools, we expect to reduce reworks, non-compliance quality, improve the profitability of the project and reduce the number of post-sale observations to achieve customer satisfaction in Precursores case study. Finally, it is expected that in this work a better approach to multi-family project management will be achieved and it will serve as a starting point for building companies and professionals to achieve their objectives and surpassing the expectations of their clients. / Tesis

Studiens syfte är att undersöka optimala orderstorlekar på kaffeproducenten Zoégas förpackningslinjer i Helsingborg. Bakgrunden är att företaget är omedvetna om hur dagens orderstorlekar påverkar produktionen, med hänsyn till produktivitet samt ställ- och lagerhållningskostnader. Fallföretaget har dessutom en vilja att på längre sikt att införa ”pull planning”, vilket understödjer vetskap om förpackningslinjernas förutsättningar. Studien är i huvudsak uppdelad i två distinkta moment; ett som jämför historisk produktivitet i förhållande till orderstorlek och ett som beräknar optimal orderstorlek med hjälp av schemaläggningsverktyget ”Economic lot scheduling problem” (ELSP). Ena förpackningslinjen utmynnar i ett klassiskt fall av ”basic period approach”, som frekvent har behandlats inom litteraturen för ELSP. De andra linjerna har ställtider som beror på ordning, vilket komplicerar tillvägagångssättet. Huvuddelen av datainsamlingen har möjliggjorts genom tillgång till data från företagets produktions- och affärssystem. ELSP-resultatet genererar orderstorlekar och tillverkningsscheman för samtliga förpackningslinjer; optimerade med kostnadsminimering. Studien fann även statistiskt signifikanta samband mellan orderstorlek och produktivitet på Zoégas; samband som resulterade i gränsvärden för mest produktiva orderstorlekar. Majoriteten av ELSP-storlekarna placerade sig innanför dessa gränser. Slutligen fann studien att företaget, vid implementering av studiens förbättringsförslag, kan öka sin produktomsättning och på så sätt vara bättre förberedda för införande av ”pull planning”. / The purpose of this thesis is to investigate optimal order quantities at the coffee producer Zoéga’s packaging lines in Helsingborg. The company is currently unaware of how order quantities affect their production; with regards to productivity as well as setup- and holding costs. With a long-term vision of incorporating “pull planning”, the case company also needs to evaluate the capabilities of their current production system. The case study mainly addresses two areas; one comparing historical productivity in relation to order quantity, and one determining optimal order quantity with the scheduling-tool known as “Economic lot scheduling problem”. One of the packaging lines results in a classic case of “Basic period approach”, a problem frequently reviewed in ELSP-literature. The other lines have sequence dependent setup times, which required a more complex model. The primarily data collection has been from internal production- and management systems. The ELSP-results generated optimal order quantities and production schedules for all packaging lines. The study also found statistically significant correlations between order quantity and productivity for Zoéga’s. These correlations compiled upper and lower limits for the most productive order quantities; where most of the ELSP-quantities placed inside these limits. Finally, the study shows that by implementing these suggestions, Zoéga’s could speed up their product turnover and be better prepared for “pull planning” implementation in the future.