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The tight schedule of developing, designing, and managing educational facilities limits the time and resources needed to correctly assess the full cost of building materials. As a result, the selection of interior finishing materials is commonly driven solely by initial cost. This study evaluates interior floor materials currently available for use in K‐12 educational facilities in the State of Florida. The range of materials chosen for the comparison encompasses common flooring materials installed over appropriate sub‐floor materials. The flooring alternatives are evaluated using a service life‐cycle cost (LCC) analysis based on the 50‐year service life specified by the Florida Department of Education. A net present worth (NPW) analysis that includes initial costs, operation and maintenance costs, and replacement costs of each selection is used to evaluate the materials. Interior floorings initial cost, replacement cost, service life, and operations and maintenance costs are compared to the materials resulting LCC.

PVC‐U replacement windows are being installed in domestic property across the developed world. It could be argued that this is a result of vigorous marketing, a need for energy conservation and possibly creative advertising. Citizens in Europe, the USA, even former Soviet countries are embracing this material as a suitable remedy for corroded mild steel and decayed timber original sash windows within residential properties. This paper seeks to try to quantify the phenomenon of PVC‐U replacement windows and also to explore the aesthetic effects of such replacements and argues that they constitute a permanent heritage loss to vernacular architecture in maturing towns and cities within the UK and examines the implications across Europe.

Recently, there has been a shift toward the embodied energy assessment of buildings. However, the impact of material service life on the life-cycle embodied energy has received little attention. We aimed to address this knowledge gap, particularly in the context of the UAE and investigated the embodied energy associated with the use of concrete and other materials commonly used in residential buildings in the hot desert climate of the UAE.

Using input–output based hybrid analysis, we quantified the life-cycle embodied energy of a villa in the UAE with over 50 years of building life using the average, minimum, and maximum material service life values. Mathematical calculations were performed using MS Excel, and a detailed bill of quantities with >170 building materials and components of the villa were used for investigation.

For the base case, the initial embodied energy was 57% (7390.5 GJ), whereas the recurrent embodied energy was 43% (5,690 GJ) of the life-cycle embodied energy based on average material service life values. The proportion of the recurrent embodied energy with minimum material service life values was increased to 68% of the life-cycle embodied energy, while it dropped to 15% with maximum material service life values.

The findings provide new data to guide building construction in the UAE and show that recurrent embodied energy contributes significantly to life-cycle energy demand. Further, the study of material service life variations provides deeper insights into future building material specifications and management considerations for building maintenance.

Utilization of sustainable materials is a global demand in the construction industry. Hence, this study aims to integrate waste management and artificial intelligence by developing an artificial neural network (ANN) model to predict the compressive strength of green concrete. The proposed model allows the use of recycled coarse aggregate (RCA), recycled fine aggregate (RFA) and fly ash (FA) as partial replacements of concrete constituents.

The model is constructed, trained and validated using python through a set of experimental data collected from the literature. The model’s architecture comprises an input layer containing seven neurons representing concrete constituents and two neurons as the output layer to represent the 7- and 28-days compressive strength. The model showed high performance through multiple metrics, including mean squared error (MSE) of 2.41 and 2.00 for training and testing data sets, respectively.

Results showed that cement replacement with 10% FA causes a slight reduction up to 9% in the compressive strength, especially at early ages. Moreover, a decrease of nearly 40% in the 28-days compressive strength was noticed when replacing fine aggregate with 25% RFA.

The research is limited to normal compressive strength of green concrete with a range of 25 to 40 MPa.

The developed model is designed in a flexible and user-friendly manner to be able to contribute to the sustainable development of the construction industry by saving time, effort and cost consumed in the experimental testing of materials.

Green concrete containing wastes can solve several environmental problems, such as waste disposal problems, depletion of natural resources and energy consumption.

This research proposes a machine learning prediction model using the Python programming language to estimate the compressive strength of a green concrete mix that includes construction and demolition waste and FA. The ANN model is used to create three guidance charts through a parametric study to obtain the compressive strength of green concrete using RCA, RFA and FA replacements.

The business case for facility expenditures is grounded in the knowledge that life-cycle economics is significant to the continued viability of the facility. The aim of this study is to develop an algorithm for life-cycle cost analysis (LCCA) and evaluate flooring products to inform decision makers about the long-term cost of ownership.

The protocol for executing an LCCA is defined by the National Institute of Standards and Technology, including defining the problem, identifying feasible alternatives and establishing common assumptions and parameters, as well as acquiring financial information. Data were provided by an independent third-party source.

The results of this study are twofold: assess functionally equivalent flooring alternatives to determine the best financial value and develop a replicable protocol and algorithm for LCCA. The study found that modular carpet was the best financial solution. As a tool for decision makers, this LCCA informs asset management about the long-term cost of ownership, providing a protocol for making practical, informed decisions for the lowest cost solution for functionally equivalent alternatives.

Projecting LCCA beyond 15 years may have limited value based on potential changes in the financial climate. Further research should focus on the implications of changes in the discount rate over time and testing the algorithm on other building systems.

Maintenance costs are considerable when compared to initial cost of flooring. Equipment costs have a significant impact on long-term cost of ownership. Using LCCA to inform specifications and to determine the best solution for a building system such as flooring provides an evidence-based process for building design and facility management.

Life-cycle costs have a significant impact on the financial health of an organization. Using LCCA to make informed decisions about facility design and specifications may contribute to increased financial stability and resources to benefit the organization’s long term goals.

This study contributes an algorithm instrument for buildings and building systems. The flooring tested with this protocol provides evidence to inform flooring selection based on lowest cost while considering other factors that inform appropriate selection of flooring materials.

The purpose of this study is to know the influence of palm oil fuel ash and metakaolin on the strength of concrete and crack resistance of reinforced concrete beam. An ordinary portland cement has been used in the concretes production where it is an important material to be considered due to its nature that reacts with every substance present. During the cement production, a significant amount of carbon dioxide is emitted from the clinker in rotary kiln and lot of energy is required in the production processes. Such an event can be prevented by replacing the part of cement with metakaolin (MK) and palm oil fuel ash (POFA). Aside from being a cementitious alternative, the materials can also contribute to a greener environment and more sustainable building, as POFA is available in Malaysia and may be used to substitute cement and minimize pollution.

This study assesses the effect of MK and POFA on the concrete in terms of compressive strength and cracks pattern of the reinforced concrete beam based on the relevant previous studies.

From this study, the compressive strength of concrete containing MK and POFA was higher than the control mix with the percentage of improvement in the range of 0.8%–78.2% for MK and 0.5%–14%, respectively. The optimum content of MK and POFA is between the range of 10% and 15% and 10% and 20%, respectively, to achieve high strength of concrete. Other than that, the inclusion of MK to the concrete mix improves the strength of reinforced concrete beams and reduces cracks on the surface of reinforced concrete beams, whereas the inclusion of POFA to the concrete mix increases the cracks on reinforced concrete beams. The cracks appeared within the flexure zone of every beam containing the MK and POFA.

It was found that the fineness of MK and POFA has a significant influence on the mechanical properties of concrete.

Awareness of the integral and necessary relationship between collection management and development and preservation programs has been increasing in recent years. At long last, collection managers and preservation specialists have begun to work together more closely and to identify areas of common concern.

Standardization of materials (i.e. replacement of several materials/components by a single component that has all the functionalities of the materials/components it replaces) is one important purchasing department decision. The primary objective of this study is to examine empirically the impact of standardization of materials and purchasing procedures (standardization in purchasing) on purchasing and business performance.

To address our research problem, a survey instrument was developed and a structural model was hypothesized and tested using structural equation modeling. Data were collected from a field research on a sample of 306 manufacturing companies in Spain.

The results of this research indicate that standardization in purchasing has a significant positive effect on both purchasing and business performance. Thus, standardizing materials and purchasing procedures is important and may help firms to meet their materials expenditure targets, and increase the quality of materials, on‐time delivery from suppliers, inventory performance, as well as business performance.

One of the limitations of the study is that the use of a single key informant could be seen as a potential limitation of the study. The study was a cross‐sectional and descriptive sample of the manufacturing industry at a given point in time. A more stringent test of the relationships between standardization in purchasing and performance requires a longitudinal study, or field experiment.

The empirically validated positive relation of standardization in purchasing to firms' performance, such as that documented in this study, can be very useful for the managers who take the initiative in standardization to promote and obtain the resources needed for the adoption of standardization of materials and purchasing procedures. Standardization in purchasing has, as this study shows, much to offer firms that wish to improve their performance.

Because there is a lack of empirical evidence about the impact of standardization of materials and purchasing procedures (standardization in purchasing) on purchasing and business performance, this paper filled an important gap in the purchasing literature.

The Concise Oxford Dictionary defines deleterious as ‘being harmful to mind or body’ — a clear and precise definition particularly appropriate when applied as an adjective to describe some materials used in the construction of buildings.

With the advent of new materials and technologies that enable passive components to be embedded within electronic substrates, one key question that arises is: under what circumstances (and for what type of applications) is it economically viable to consider using embedded passives? The economic issues that must be considered consist of a combination of manufacturing costs and throughputs, and non‐manufacturing life cycle costs. This paper discusses the assessment of manufacturing costs associated with embedding resistors and capacitors in printed circuit boards and provides cost modeling results for an avionics board. The discussion is extended to include optimizing the specific embedded passive content in a board and design for production modeling when embedded passives are present. Life cycle cost issues are also qualitatively discussed.