1. Project Overview.
Ningbo Fenghua Rose Garden Phase II is located at the intersection of Qiaoxi'an Road and Jinzhong Road in Fenghua City, Ningbo City. Commissioned by the owner, our Hanks engineers conducted an on-site investigation of the elevator noise affecting the owner's home. The vibration and noise of the two elevators in the unit where the owner is located are relatively large, affecting the noise in the bedroom of the owner's house is about 37 39 dB (a), which has seriously exceeded the relevant national standards. According to our past experience, the unique low-frequency sound insulation and vibration reduction structure can ensure that after treatment, the noise factors that are not part of the project are excluded, and the acoustic environment in the owner's home meets the latest standards stipulated by the state.
Second, environmental protection standards.
According to the environmental protection standards, the noise of elevator equipment shall not be higher than 40 decibels during the day and 30 decibels at night.
3. Governance measures.
Based on our previous experience and the analysis of the noise source characteristics and noise generation mechanism of the elevator machine room, we adopt a unique low-frequency vibration isolation and sound absorption structure, which can ensure that the noise floor is eliminated after treatment, and the sound environment in the owner's home meets the latest standards stipulated by the state. In line with the principle of economy and effectiveness, our treatment plan is as follows: Install a special low-frequency shock-absorbing and soundproof platform for elevators at the bottom of each elevator motor to block the transmission of elevator noise to the owner's home through the steel beam sound bridge;Use a special low-frequency shock-absorbing soundproof pad for elevators to isolate the motor cabinet from the ground to prevent high-frequency sound from penetrating the wall.
Fourth, the scene**.
5. Noise reduction effect.
After our treatment, the noise level in the adjacent owner's house of the elevator machine room is 30db(a), which has been recognized by the owner's satisfaction!The noise problem of the elevator machine room can be dealt with and left us a message!