Bill of Quantities with 3D Views Using Building Information Modeling

Abstract

An approach for enhancing the production efficiency of bill of quantities (BQ) used on construction projects is presented. The approach was developed to integrate the quantities obtained from a building information model of the project into a suitably prepared electronic format of BQ with 3D views. In this format of BQ, the building information modeling (BIM) technology provides enhanced functionality to a contractor's quantity surveyor whose primary task is to accurately determine the quantities from the project drawings. A review of the traditional BQ preparation methods is presented to highlight their characteristics and to reflect on their benefits and barriers. Questionnaire surveys were conducted with various groups of respondents to obtain their opinions about the proposed BQ format. They included experienced quantity surveyors from the public and the private sectors, postgraduate, and undergraduate students studying in BIM-related courses. The results of the questionnaire survey showed mostly a positive view toward the proposed BQ format. Slight differences in the opinions of these three groups were also present. It is expected that the approach as presented in this paper for the development of BQ with 3D BIM views could usefully be incorporated into the standard quantity surveying practices for quantity takeoffs in various countries. B Abid Nadeem

Integration of Control Policies for Comfort Improvement in a Large Public Building

“…Traditionally, the bill of quantities was prepared based on detailed drawings and specifications [11]. Bill of quantities is a very important document which provides a structured assessments for cost estimation of construction projects.…”

Using Classification Techniques for Assigning Work Descriptions to Task Groups on the Basis of Construction Vocabulary

“…This difficulty in accessing the information contained in BoQ documents has been pointed out frequently in the literature (Al Qady and Kandil, ; Niknam et al., ; Martínez‐Rojas et al., ; Nadeem et al., ). However, despite the importance of the subject, most of the previous experiences that can be found in the literature only approach BoQ documents processing superficially, mainly focusing on collaborative edition techniques and electronic document sharing (Wang et al., ).…”

Development of BIM-based quantity takeoff for light-gauge steel wall framing systems

“…BIM is the use of a digital representation of a built asset as a shared knowledge resource to form a reliable basis for decisions during the design, construction, and operation process (ISO, 2018;National Institute of Building Sciences, 2007). Because all building elements in BIM are object-based models, BIM can be used to extract quantities and other information directly from the building model elements (Sacks et al, 2018); thus, BIM-based quantity takeoff is more reliable, accurate, and rapid than the traditional quantity takeoff (Bečvarovská and Matějka, 2014;Nadeem et al, 2015;Sacks et al, 2018;Sattineni and Bradford, 2011).…”

“…All building elements in a BIM model consist of computable graphics and data attributes; therefore, the quantities of building elements can be obtained directly from a BIM model (National Institute of Building Sciences, 2007;Sacks et al, 2018). This approach reduces the measurement time and enables more reliable quantity takeoff (Bečvarovská and Matějka, 2014;Nadeem et al, 2015;Sacks et al, 2018;Sattineni and Bradford, 2011). However, BIM-based quantity takeoff is not completely flawless and automatic.…”