DL E&C Secures Top-Level Technology for Interfloor Noise Blocking

DL E&C is conducting a heavy impact noise test at a newly constructed apartment site.

[Asia Economy Reporter Kim Min-young] DL E&C announced on the 8th that its floor structure, D-Silent 2, developed with proprietary technology, has achieved the highest level of performance, Grade 1, in reducing inter-floor noise.

DL E&C applied this floor structure at the e-Pyeonhansesang site under construction in Hwaseong, Gyeonggi Province, and began performance verification. Testing was conducted by the nationally accredited testing institution (KOLAS), which officially recognized the Grade 1 performance for reducing heavy impact noise.

Heavy impact noise on floors is measured using a "Bang Machine," which drops a tire structure weighing approximately 7.3 kg from a height of 0.9 m onto the floor. A noise level of 40 dB or below transmitted to the lower floor qualifies for Grade 1.

Currently, no construction company has commercialized a floor structure with Grade 1 heavy impact noise reduction. This is because most apartments in Korea are built with wall-type structures, which make controlling heavy impact noise difficult. Based on the D-Silent 2 technology, DL E&C plans to commercialize apartments with Grade 1 heavy impact noise reduction within this year.

A DL E&C official stated, "The newly developed floor structure is a new concept technology completed by considering both performance and constructability, and we have completed the patent application." He added, "We will continue relentless research and development to solve the socially significant issue of inter-floor noise."

Recently, DL E&C successfully commercialized an inter-floor noise alert technology that automatically notifies residents of the affected unit via wall pads and mobile devices when noise above a certain level is detected. This aims to encourage residents to reduce inter-floor noise on their own.

This content was produced with the assistance of AI translation services.