Design and Construction Handbook - Los Angeles World Airports

Guide Specification
G. The Contractor shall have an experienced Project Manager on site at all times when work is in
progress on any project. The individual who represents the Contractor shall be the single point
of contact between the Contractor and LAWA, and shall be responsible for the entire project.
This representative shall be able to communicate with LAWA or designated representative
whenever requested throughout the life of the project.
H. While working in the facility, the Contractor shall not block any entrances, egresses, or other
passageways that are necessary for normal, safe operation. It should be noted that the
Contractor is responsible to provide any lifts, hand trucks, etc. that it will need to transport its
materials and equipment throughout the site.
I. The Contractor shall protect all buildings, walls, floors, and property from damage resulting
from the installation. Any and all damage to property shall be repaired by the Contractor at its
expense. If the Contractor enters an area that has damage (not caused by the Contractor), the
Contractor shall immediately bring this to the attention of the Engineer so the area can be
appropriately noted.
J. Following each day’s work, the Contractor shall clean up the areas in which it has been working
and dump all trash in the appropriate designated areas.
PART 2 - PRODUCTS
2.1 GENERAL PERFORMANCE REQUIREMENTS
A. System Performance:
1. Electrical Performance; Source Input to Power Amplifier Output:
PAGING SYSTEMS
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a. Frequency Response (Equalizer flat): +/- 0.2 dB 20 Hz to 20 kHz.
b. Total Harmonic Distortion (THD): Less than 0.05%, 20 Hz to 20 kHz, 4 ohms.
c. Noise: At least -105 dB, 20 Hz to 20 kHz, referenced to input of +4 dBm.
d. Crosstalk: At least 60 dB, 20 Hz to 20 kHz.
e. Damping Factor: Greater than 20 (below 1 kHz).
2. Nominal gain from microphone station output to input of Ambient Noise Analysis system
shall be 0dB.
3. Nominal voltage at input of Ambient Noise Analysis Systems shall be 1.00 volt RMS.
4. Electro/Acoustic Performance; Distributed Systems: 90 dB maximum RMS single word
level, 80 dB average RMS measure at ear level in each zone with test speech source
having equivalent RMS voltage equal to that measured at the microphone station output
with 65dBA speech at normal microphone distance from the mouth.
Communication Systems