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Published in Les Goring, Residential Surveying Matters and Building Terminology, 2023
Floor insulation: The Building Regulations’ upgraded Part L1, concerning the conservation of fuel and power, is, of course, not meant to be applied retrospectively to existing dwellings. But – with regard to floor insulation – improvements could be made. For example, traditional ground-floors with suspended joists on sleeper walls could be upgraded by having 100mm-thick Crown Wool packed between the similar-depth joists, laid on support-netting turned up at the sides and fixed to the faces of the joists. Of course, it would be a tedious task removing and – if undamaged – replacing the floorboards or sheet-decking. Alternatively, of course, the existing ground floor (whether suspended or of oversite-concrete, topped with a sand-and-cement screed) could be lined with a vapour/moisture barrier, before being overlaid with a thin (3 to 5mm thick) foam, insulating underlay, prior to laying a floating floor of plastic- or hardwood-laminate. The insulation underlay could be thicker, of course, but this might mean a greater reduction from the underside of any affected doors.
Direct sound transmission
Published in Carl Hopkins, Sound Insulation, 2020
Floating floors generally consist of a rigid walking surface ‘floating’ on a resilient material with no rigid connections to the surrounding walls at the edges of the floating floor. There are three main types as shown in Fig. 4.68; the connection between the walking surface and the base floor via the resilient material may be at individual points, continuous over their entire surface, or along lines (i.e. along battens/joists). These resilient connections result in a mass–spring type resonance associated with the floating floor. The performance of any floating floor relies on its isolation from the base floor; hence it is highly dependent on the quality of workmanship. Floating floors are easily bridged with rigid connections such as nailing through a lightweight floating floor, screed pouring through gaps in the resilient layer, or when walking surfaces are tightly butted up against the side walls.
Ground floors
Published in Derek Worthing, Nigel Dann, Roger Heath, of Houses, 2021
Derek Worthing, Nigel Dann, Roger Heath
A number of solid timber and laminate floor products can also be used to form a floating floor. These have proven to be very popular but, given the additional moisture sensitivity of timber products, care in ensuring that an effective vapour control layer has been incorporated is essential.
User Perceptions of Safety Flooring Measured Using Multiple Settings and Stakeholders
Published in Journal of Aging and Environment, 2023
Mayank Kalra, Taylor W. Cleworth, Jaimie Killingbeck, Andrew C. Laing
The current study adds new perspectives related to the effects of SF on noise levels. In contrast to previous work that suggests safety flooring dampens noise levels (Gustavsson et al., 2018), a common perception in the current study was that the SF investigated increased noise levels when walking. Some potential explanations may relate to the installation processes. During Phase 1 the SF was installed as a “floating floor” placed directly on top of the existing concrete/vinyl laboratory floor. During Phase 2 the acoustic concerns could have been more noticeable because of direct comparisons between traditional and SF suites, or because the suites were vacant which may have amplified the noise. Importantly, some participants considered the additional noise as a minor setback that residents could become habituated to when compared to the benefit of fall injury reduction. Regardless, there may be value in explicitly considering the effects of safety flooring on acoustic levels (as part of initial design or installation processes), in addition to dosimetry studies to evaluate the influence of SF more explicitly on noise levels during activities of daily living for residents and staff.
Estimating the performance of heavy impact sound insulation using empirical approaches
Published in Journal of Asian Architecture and Building Engineering, 2021
Jongwoo Cho, Hyun-Soo Lee, Moonseo Park, Kwonsik Song, Jaegon Kim, Nahyun Kwon
This study developed empirical models for estimating the improvement in sound pressure level () achieved by floating floors under rubber ball impacts. The model development process consists of (1) data collection and (2) empirical modeling (Figure 2). In the data collection phase, the explanatory variables for the empirical modeling are selected, including the variables whose correlation to has been verified analytically in previous research (Vér 1971; Cremer, Heckl, and Petersson 2005; Stewart and Craik 2000; Schiavi, Belli, and Russo 2005). Then, data for the explanatory and response variable are collected for different floating floor samples. In the empirical modeling phase, correlations between the quantitative explanatory variables are examined because their multicollinearity can lead to an adverse effect on estimation accuracy. Next, the estimation models are developed using two different empirical approaches (MR and PCR) because the performance of empirical approaches varies depending on the data characteristics.
Historical study and static assessment of an innovative vaulting technique of the 19th century
Published in International Journal of Architectural Heritage, 2019
Francesco Marmo, Nicola Ruggieri, Ferdinando Toraldo, Luciano Rosati
A total of four GPR profiles have been acquired for both the longitudinal and transversal directions of the surveyed vault, see, e.g., the acquisition paths reported in Figure 8. The survey consisted in passing the GPR antenna on the floating floor above the vault, i.e., on the pavement at the first floor of the Mariscola’s Palace. In order to measure the path length, the GPR antenna has been mounted on a survey cart with encoder (odometer wheel). This setup allowed us to conduct the survey without interfering with the normal activities of the Museum housed within the Palace.