The aim of this study was to establish an action plan whose implementation would improve waste management practices in demolition and rehabilitation operations and improve the recovery of waste from these operations in accordance with the hierarchy established by the European regulations in the Waste Framework Directive of 19 November 2008. This study made it possible to establish a diagnosis of the current state of waste management in the building sector and to identify the various brakes preventing better waste recovery. For these brakes, levers for improvement were identified by a literature study, associated with concrete examples of innovative solutions implemented by companies in France. A systemic approach to the building sector was used to identify the brakes and levers for improvement. This macroscopic approach took into consideration all the players in the sector as well as all the phases (upstream and downstream) of a demolition or rehabilitation project. On the basis of the brakes and levers identified, graphs representing the causal links between the brakes and the levers of improvement were drawn up. The superimposition of these graphs made it possible to draw up brake-lever pairs, which together forms the basis for the action plan for improving waste recovery. Being limited to demolition and rehabilitation operations only, the method carried out in this study may also be used in future studies applying this protocol to the entire building sector including also infrastructures. The action plan established in this study could thereby be enriched. The second step will be to put the action plan into practice on a "test" work site and to study the impact of the improvement levers on waste recovery in order to conclude on the relevance of this action plan.

La réduction de la consommation énergétique du secteur résidentiel constitue un enjeu majeur dans un contexte de transition énergétique et de lutte contre le changement climatique. Pourtant, malgré les politiques publiques en place, la consommation énergétique sectorielle française peine à baisser. À travers quatre essais empiriques, cette thèse s’intéresse aux obstacles à la baisse des consommations énergétiques dans le secteur résidentiel français en se focalisant sur le rôle des facteurs individuels. Dans le premier chapitre, qui s’inscrit dans la littérature sur le les barrières à l’investissement en efficacité énergétique et le « paradoxe énergétique » (Jaffe and Stavins, 1994), nous utilisons la méthode des choix discrets pour mettre en évidence le rôle de l’incertitude sur la qualité des travaux de rénovation et le prix de l’énergie comme barrière à l’investissement en efficacité énergétique. Le second chapitre fournit un éclairage empirique sur le rôle des facteurs socio-économiques, des préférences individuelles pour le confort et de la performance énergétique du logement pour expliquer la consommation énergétique résidentielle. Le troisième chapitre est l’occasion d’étudier l’écart de performance énergétique à l’échelle du logement (consommation énergétique réelle vs théorique) et ses déterminants individuels et socio-économiques, via la régression quantile. Enfin, le quatrième chapitre s’intéresse aux interactions dynamiques entre efficacité énergétique et consommation énergétique en traitant la question de l’effet rebond direct pour l’usage de chauffage résidentiel en France. / Reducing the energy consumption of the residential sector is a major stake in the context of the energy transition and the fight against climate change. However, despite the implementation of several dedicated public policies, the energy consumption of the sector has barely decreased in France. Through four empirical articles, this thesis aims to identify some of the barriers to the decrease of the French residential energy consumption with a focus on the role of individual determinants. In the first chapter, we wish to contribute to the literature on the barriers to energy efficiency investment (Sutherland, 1991) and the “energy efficiency gap” (Jaffe and Stavins, 1994). We use the methodology of the discrete choice experiment to assess the role of perceived risk and uncertainty on retrofit quality and energy price as barrier to the energy renovation decision. In the second chapter, we provide an empirical contribution on the role of individual preferences for comfort, other individual determinants and energy performance of dwellings in explaining energy consumption. In the third chapter, we study the energy performance gap (gap between theoretical and real energy consumption at dwelling level) and its drivers by using the quantile regression. Finally, in the fourth chapter, we test the assumption of the existence of a rebound effect for the heating energy consumption in France.

In Stockholm multiple road construction projects are ongoing and the projects magnitude varies. A sustainable infrastructure is fundamental for the requirements put on the city traffic. Three road construction projects with the same building contractor have been studied for this degree project. Two larger and one smaller construction projects. One of Sweden’s largest construction companies is in the frontline on safety and health matter. It is of interest to compare the larger and the small project from a safety perspective. Large construction companies have developed own regulations concerning safety on the construction site. For the safety of the coworkers, differences between the projects, should be identified. If there is a violation of the safety-rules, there should be consequences, according to the company rules. It is of interest to study if there is differences between the taken measures between the studied projects. The method use to conclude the degree project have been; case study and qualitative research. All interviewed respondents’ feels that the prime risk filled activity they are exposed to in their daily work is surrounding civilians. One major difference between the projects is that the workers in the large construction projects considers that the most common near-accident occur in connection with lifting objects with heavy machines. 7 out of 13 respondents recalls that they at some point have had an unsafe behavior at the site that could have risk their own safety. 7 out of 8 of the respondents at the small construction project recalls that they do not used personal protective equipment, this is a major difference from the larger construction project.  Reprimands are more commonly given to skilled workers than to supervisors and site managers.

In Stockholm multiple road construction projects are ongoing and the projects magnitude varies. A sustainable infrastructure is fundamental for the requirements put on the city traffic. Three road construction projects with the same building contractor have been studied for this degree project. Two larger and one smaller construction projects. One of Sweden’s largest construction companies is in the frontline on safety and health matter. It is of interest to compare the larger and the small project from a safety perspective. Large construction companies have developed own regulations concerning safety on the construction site. For the safety of the coworkers, differences between the projects, should be identified. If there is a violation of the safety-rules, there should be consequences, according to the company rules. It is of interest to study if there is differences between the taken measures between the studied projects. The method use to conclude the degree project have been; case study and qualitative research. All interviewed respondents’ feels that the prime risk filled activity they are exposed to in their daily work is surrounding civilians. One major difference between the projects is that the workers in the large construction projects considers that the most common near-accident occur in connection with lifting objects with heavy machines. 7 out of 13 respondents recalls that they at some point have had an unsafe behavior at the site that could have risk their own safety. 7 out of 8 of the respondents at the small construction project recalls that they do not used personal protective equipment, this is a major difference from the larger construction project.  Reprimands are more commonly given to skilled workers than to supervisors and site managers.

The housing and service sector in Sweden are estimated to be responsible for 40 % of the total primary energy usage (Energimyndigheten, 2011). There exist a lot of inventions that have the possibility to greatly improve the environmental performance of a building´s LCA (Life Cycle Assessment) (Swentec, 2012) (Rutqvist, 2008). In order to achieve implementation of new innovative sustainable installations in buildings it is important to understand the process during the investment decision. Understanding the decision making process used in practise, is the first step towards creating a strategy for how to get a new technology implemented. By conducting a survey including both contractors and developers in Sweden an overview of the building sectors standpoint on environmental sustainability is achieved. In order to refine the information and achieve a more detailed picture of the issue the survey was followed up by In-depth interviews.The findings show that valuation techniques are varying a lot between companies but surprisingly many of the companies do use inferior methods such as pay back-time for investment calculations. Overall in the construction business technical and economic risk aspects are not being valued explicitly but rather through the use of product ratings and brand promise of well-known suppliers. Negative externalities are not being included in the calculations and the valuation of intangibles is not done explicitly but rather seen as implicitly derived from the cost and value of sustainability certifications.

La création des normes au sein des organisations est un phénomène assujetti aux influences sociales, aux interactions entre les individus, aux négociations entre acteurs et à la diffusion des innovations. L’individu a une place centrale dans ce phénomène, que ce soit par l’initiation d’une nouvelle norme, son acceptation ou sa diffusion. La contribution des individus à la création normative est pourtant peu étudiée par la littérature. Notre recherche propose d’isoler des cas d’implications individuelles envers la création de normes spécifiques. L’objectif étant de saisir la richesse des apports des individus à cette création et de mieux comprendre les raisons derrière leurs actions en faveur d’une nouvelle norme. La recherche présente la formation de l’implication sous la forme d’un processus comportant trois phases : la remise en cause du statu quo, l’évaluation positive de l’implication et la manifestation de l’implication par des actions et des comportements en faveur de la nouvelle norme. Ce processus est traversé par des déterminants affectifs et cognitifs chez les individus et est favorisé par des facteurs d’ordre personnel, interpersonnel, sociétal et organisationnel. / The creation of norms within organizations is a phenomenon that is subject to social influences, interactions between individuals, negotiations between actors and the diffusion of innovations. The individual has a key role in this phenomenon through the initiation of a new norm, its acceptance or its diffusion. However, the contribution of individuals to normative creation is not fully exploited by the literature. The objective of the current research was to bridge this gap by isolating cases of individual commitments for the creation of specific norms. The purpose is to capture the richness of individuals' contributions to this creation and to better understand the reasons behind their actions in favour of a new norm. The research presents the formation of commitment in the form of a three-phase process : questioning the status quo, evaluating commitment positively and manifesting commitment through actions and behaviours. This process is driven by emotional and cognitive determinants within individuals and is enabled by personal, interpersonal, societal and organizational factors.

Keeping pace with the constantly changing surroundings is more important than ever as new game changing technologies appear faster than ever before. In the IT-sector a new technology known as Machine-to-Machine (M2M) Communication is emerging. The technology has been around for almost 15 years but still has not had the major breakthrough on the mainstream market that has been expected. The reasons for this are topics for speculations and debates since many people have different views and opinions on the matter. M2M Communication uses the Internet to connect machines with each other and gives them intelligence so they can communicate with each other and make their own decisions without human interference. Today the decisions the machines make concerns simple things such as temperature control, automatic CCTV monitoring, turning the lights on and off etc., but in the future M2M Communication technology advocates hope the it will be able to predict heart attacks even before they happen by implementing the M2M Communication technology into smart pacemakers sending an emergency signal to a nearby ambulance that a patient may soon suffer from a heart attack. The technology is also hoped to be used in cars where it will send an emergency signal to a Public-Safety Answering Point (PSAP) saying that a car accident has occurred, where it occurred and how many people that were in the car in order to reduce the number of road deaths. So as mentioned above the public can benefit from the technology once it is widely available. Today experts say that there is somewhere between 5 to 10 years before the technology in general has been adopted by 20 to 30 percent of the potential sectors, known as Connected Things (CT) and third or higher generation innovations are implemented. However, as this Master Thesis research shows, at least one sector has already reached 5 to 10 years into the future and adopted the M2M Communication technology. This sector is the building sector with their Connected Buildings (CB). It is a mature sector that is estimated to grow somewhere around 16 percent CAGR globally and around 13 percent CAGR in the Nordic region until somewhere around 2020. In this Master Thesis research the M2M Communication technology was analyzed specifically for the building sector with focus on Real Estate Management Companies (REMC) on the Swedish market. Interviews and surveys were conducted with the 50 largest (based on revenue) REMCs in order to illustrate their opinion on the M2M Communication technology and its usage and advantages in the building sector. Of the 50 REMCs asked to participate in the survey 16 replied giving a response rate of 32 percent. / Att hålla jämna steg med den konstant förändrande omgivningen är idag mer viktigt än någonsin eftersom nya förändrande tekniker dyker upp snabbare än någonsin innan. Inom IT-sektorn finns idag en ny teknik på framfart, en teknik som är känd som Maskin-till-Maskin (M2M) Kommunikation. Tekniken har funnits i snart 15 år men trots det har den fortfarande inte fått det genombrott på den generella marknaden som man kan förvända sig. Anledningarna för detta är fortfarande något som debatteras eftersom många fortfarande har olika åsikter. M2M Kommunikation använder sig av Internet som en resurs för att koppla ihop maskiner så att de kan ”prata” med varandra och ta egna beslut utan mänsklig inblandning. I dagsläget tar maskinerna enkla beslut såsom temperaturreglering, automatisk videoövervakning, slå på och stänga av lampor etc., men i framtiden hoppas man att M2M Kommunikation tekniken ska kunna hjälpa till att bl.a. förutspå hjärtattacker redan innan de händer genom att implementera M2M Kommunikationstekniken i smarta pacemakers som kan sända en nödsignal till en ambulans som berättar att en patient snart kommer att få en hjärtattack. Tekniken hoppas även kunna utnyttjas i bilar som vid en krock direkt skickar en nödsignal till larmcentralen med information om att en krock har ägt rum, var den har ägt rum och hur många som var i bilen i syfte att minska dödsfallen på vägarna. Som nämnt ovan verkar det som att tekniken har enorma fördelar för befolkningen men ändå har den inte haft något större genombrott. Idag säger experter att det kommer att ta ca 5 till 10 år innan teknologin har generellt blivit implementerad av 20 till 30 procent hos de potentiella sektorerna, kända som Connected Things (CT) och tredje generationens innovationer har blivit implementerade. Trots detta, vilket denna studie visar, så har minst en sektor redan nått 5 till 10 år fram i tiden och har redan implementerat M2M Kommunikationsteknologin. Denna sektor är byggnadssektorn med deras Connected Buildings (CB). Det är en mogen sektor som förväntas växa med ca 16 procent CAGR globalt och ca 13 procent CAGR i den nordiska regionen till år 2020. I denna studie var M2M Kommunikationsteknologin analyserad specifikt för byggnadssektorn med fokus på fastighetsskötarbolag på den svenska marknaden. Intervjuer och en enkät-undersökning genomfördes med de 50 största (baserat på omsättning) fastighetsskötarbolagen med syfte att illustrera deras åsikt gällande M2M Kommunikationsteknik och dess användning och fördelar inom byggnadssektorn. Av de 50 st. fastighetsskötarbolag som tillfrågades om de ville ställa upp i enkätundersökningen deltog 16 st. vilket gav en svars-frekvens på 32 procent.

Les grands groupes de l'industrie de la construction souhaitent intégrer le concept de prévention au sein de leurs organisations en recherchant des améliorations techniques et organisationnelles et en déployant des méthodes tantôt coercitives, tantôt participatives visant une maîtrise du facteur humain. L'objectif de cette industrie est de contrôler les risques inhérents aux chantiers dont il est possible de déterminer plusieurs classifications. Le point commun de ces dernières est leur finalité, c'est-à-dire établir une liste exhaustive d'un ensemble infini selon des critères variables. Après avoir analysé les différents facteurs influençant sur la genèse des risques dans un environnement aussi particulier qu'est celui des chantiers de bâtiment, nous proposons un modèle dynamique d'appréhension des risques et d'aide à la décision reposant sur la mobilisation de la TNI et de la théorie des représentations sociales. Plus spécifiquement, en considérant les propriétés des risques « émergents » actuels, nous nous interrogeons sur la pertinence des moyens mis en œuvre par l'organisation pour permettre leur intégration. / The major companies of the construction industry wish to integrate the concept of prevention within their organizations by seeking technical and organizational improvements and by implementing coercive or participatory methods whose goal is to deal with the human factor. This industry aims at controlling the risks inherent to the construction sites of which several classifications can be determined. Those classifications have in common their purpose, which is to draw up an exhaustive list from an infinite set according to variable criteria. After analyzing the different factors that influence the genesis of the risks in such a specific environment as the building sites, we propose a dynamic model for risk understanding and decision-making, based on the mobilization of the TNI and the Theory of social representations More specifically, considering the characteristics of the current emerging risks, we wonder about the relevance of the means implemented by the organization towards their integration.

Det finns en oro kring konsekvenserna av ökade växthusgasutsläpp. Därför har bland annat EU:s medlemsländer tecknat avtal om att minska utsläppen. I Sverige har det lett till krav att från och med 2022 redovisa byggmaterials miljöpåverkan genom klimatdeklarationer. Byggsektorn har potential att minska klimatpåverkan. Byggnadsmaterial ger olika utsläpp av växthusgaser och valet av material är viktigt. Isoleringsmaterial med naturlig härkomst anses orsaka mindre utsläpp än konventionell isolering. Hampa är ett exempel på ett naturligt material som kan användas i småhusbebyggelse. Hampan kan bli en kolsänka då biomaterial binder kol. Tyvärr finns det idag mycket begränsad forskning på just hampfiberisolering i svenskt klimat.  Syftet med studien är att bidra med ökad kunskap inför valet av isoleringsmaterial i ett småhus, av modellen Eneryda av Rörvikshus, placerat i Växjö. I arbetet jämförs klimatpåverkan och kostnader för isoleringsmaterialen hamp-, cellulosa- och glasullsisolering genom en livscykelanalys (LCA) och en livscykelkostnad (LCC) i en vald husmodell. I studien undersöks skedena A-D, d.v.s. från vagga till grav. Resultatet visar att byggnaden isolerad med hampfiber orsakar det lägsta nettoutsläppet på 124 följt av cellulosa 132 och glasull 139 CO₂e/m². Kostnaden för byggnaden med isolering av hampfiber är 5467, cellulosa 4830 och glasull 4861 SEK/m²BOA. Genom att välja hampfiberisolering istället för glasull kan utsläppen för husmodellen Eneryda minskas med 12 % samtidigt som kostnaden ökar med 20 %. Att välja cellulosaisolering i stället för glasullsisolering ger en minskning av nettoutsläppen med 5 % och kostnaderna förblir detsamma.  Studiens känslighetsanalyser visar effekten av indata. Om råvaran till cellulosa byts ut från oanvänt papper till återvunnen råvara orsakar det att nettoutsläppen för byggnaden Eneryda minskar med 13 %. Det innebär att småhuset Eneryda isolerad med cellulosa från återvunnen produkt orsakar 15 % lägre utsläpp än glasullshuset - utan att påverka priset. Största påverkan på nettoutsläppen hade Enerydas värmesystem. Att använda bergvärme istället för Veab:s fjärrvärme ökade nettoutsläppen med 56 – 63 %. Slutligen ledde resultatet av studien till en diskussion om avsaknaden av en entydig definition och metod för användandet av biogent kol i klimatdeklarationer. Att exkludera biogent kol leder till att hampfiberisoleringen bidrar med högst utsläpp tätt följt av cellulosan och sist glasullsisoleringen som släpper ut minst. Studiens resultat påvisar vikten av vaksamhet och att Boverket borde blir tydligare kring det biogena kolet i klimatberäkningar. Enheten bör utvecklas mer av institut för standarder. Av resultaten framgår också vikten av att ta tidsaspekten av biomaterialets förnyelsetid i beaktande vid beräkningarna för att material som hampfiber binder kol snabbare än exempelvis trä. / The concern of climate change has influenced the building sector in Sweden to become more climate neutral. The choice of building materials affect the emissions of carbon dioxide equivalents [CO₂e]. The purpose of the study is to provide more basis for the choice of insulation material looking into the climate- and cost implication of hemp fibre, cellulose and stone wool insulation.  The study includes an accounting-LCA from cradle to grave (A – D) and an LCC. The study looks at the climate shell of a one-story single-family house, model Eneryda from Rörvikshus, in Växjö over the lifetime 50 years.  The result shows that Eneryda net emissions for hemp fiber insulation is 124 CO₂e/m²BOA and the cost is 5467 SEK/m2 BOA. The result of emissions for the hempfiber-model is 12% less and the cost is 20% higher than the glass wool-model. Cellulose insulation results in net emissions of 132 CO₂e/m² and a cost of 4830 SEK/m2 BOA. Cellulose results in 5% less emissions and nearly the same cost as the glass wool building.