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Home My WebLink AboutCUP 02-03; NATIONAL UNIVERSITY; ACOUSTICAL COMPLIANCE SURVEY; 2002-01-11FW1IIG4 DVE'rarc?lt.'fCTF January 11, 2002 Ms. Jayne Haussler Jack Henthorn & Associates 5365 Avenida Encinas, Suite A Carlsbad, CA 92008 .4/111,lD ~ 3545 Camino Del Rio South, Suite E San Diego, CA 92108-4003 Phone/Fax: 619-640-9379 I 619-640-0763 www.iseinc.ws RE: NATIONAL UNIVERSITY ACOUSTICAL COMPLIANCE SURVEY CARLSBAD PACIFIC CENTER, CARLSBAD CA ISE REPORT #02-001 Dear Ms. Haussler: At the request of Jack Henthorn & Associates, Investigative Science and Engineering (ISE) were directed to analyze potential exterior and interior noise impacts to the proposed National University campus located within the Carlsbad Pacific Center Building Three at 705 Palomar Airport Road in Carlsbad, California. The results of that survey, as well as predicted future sound levels at the site and within the structure, are presented in this letter report. ♦ INTRODUCTION AND DEFINITIONS Project Background National University is an accredited non-profit institution of higher education for adults throughout California. National University offers learning opportunities to a diverse population through both classroom and on-line courses. The University currently enrolls approximately 17,000 full-time equivalent students throughout California, making it the second largest privately operated college of higher education in California. The proposed National University campus location within the Carlsbad Pacific Center Building Three unit will be operating after normal commercial business hours (i.e. between 5:30 p.m. and 10:30 p.m.). The University anticipates an enrollment of approximately 320 students as well as 27 administrative staff and faculty members at any given time. The campus would utilize only the first two floors of the existing structure. Existing Site Characterization The Planning Commission for the City of Carlsbad under Site Development Plan 98-23 and Coastal Development Permit 98-89 recently approved the development of 2.05 acres consisting of a three story, 41,000 square-foot building located at 705 Palomar Airport Road, Carlsbad, California (APN 210-100-1.6). The approved site Scientific and Forensic Engineering Consultants Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 2 of 16 currently has two existing buildings, addressed as 701 and 703 Palomar Airport Road . The approved third building, in its final stages of construction, will share site access from Avenida Encinas with the two existing buildings noted above. This approved development is zoned M (industrial) with an occupancy use of B (office). Surrounding land uses include a Texaco gas station to the north, a surfboard manufacturing facility to the south, Avenida Encinas to the west and Interstate 5 to the east. The project vicinity map can be seen in Figure 1 below. Site configuration photographs are provided in Figures 2a through -b. :t ,;~ <:;, ; -.: \-.C., ·PROJECT SITE I 6-1 d ,. 11 Figure 1: Project Vicinity Map (Thomas Guide Page 1126, Grid H3) Acoustical Definitions Sound waves are linear mechanical waves. They can be propagated in solids, liquids, and gases. The material transmitting such a wave oscillates in the direction of propagation of the wave itself. Sound waves originate from some sort of vibrating surface. Whether this surface is the vibrating string of a violin or a person's vocal cords, a vibrating column of air from an organ or clarinet, or a vibrating panel from a loudspeaker, drum, or aircraft, the sound waves generated are all similar. All of these vibrating elements alternatively compress the surrounding air on a forward movement and expand it on a backward movement. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 3 of 16 East Fa cing View South Facing View Figures 2a through -b: Project Site Configuration Photos (/SE, 2002) There is a large range of frequencies within which linear waves can be generated, sound waves being confined to the frequency range that can stimulate the auditory organs to the sensation of hearing. For humans this range is from about 20 Hertz (Hz or cycles per second) to about 20,000 Hz. The air transmits these frequency disturbances outward from the source of the wave. Sound waves, if unimpeded, will spread out in all directions from a source. Upon entering the auditory organs, these waves produce the sensation of sound. Waveforms that are approximately periodic or consist of a small number of periodic components can give rise to a pleasant sensation (assuming the intensity is not too high), for example, as in a musical composition. Noise, on the other hand, can be represented as a superposition of periodic waves with a large number of components. Noise is generally defined as unwanted or annoying sound that is typically associated with human activity and wh ich interferes with or disrupts normal activities. Although exposure to high noise levels has been demonstrated to cause hearing loss, the principal human response to environmental noise is annoyance. The response of individuals to sim ilar noise events is diverse and influenced by the type of noise, the perceived importance of the noise and its appropriateness in the setting, the time of day, and the sensitivity of the individual hearing the sound . Airborne sound is a rapid fluctuation of air pressure above and below atmospheric levels. The loudest sounds the human ear can hear conformably are approximately one trillion times the acoustic energy that the ear can barely detect. Because of this vast range, any attempt to represent the acoustic intensity of a particular sound on a linear scale becomes unwieldy. As a result, a logarithmic ratio originally conceived for radio work known as the decibel (dB) is commonly employed. A sound level of zero "0" dB is scaled such that it is defined as the threshold of human hearing and would be barely audible to a human of normal hearing under extremely quiet Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 4 of 16 listening conditions. Such conditions can only be generated in anechoic or "dead rooms". Typically, the quietest environmental conditions (extreme rural areas with extensive shieldi_ng) yield sound levels of approximately 20 decibels. Normal speech has a sound level of approximately 60 dB. Sound levels above 120 dB roughly correspond to the threshold of pain. The minimum change in sound level that the human ear can detect is approximately 3 dB. A change in sound level of 10 dB is usually perceived by the average person as a doubling (or halving) of the sounds loudness. A change in sound level of 10 dB actually represents an approximately 90 percent change in the sound intensity, but only about a 50 percent change in the perceived loudness. This is due to the nonlinear response of the human ear to sound. As mentioned above, most of the sounds we hear in the environment do not consist of a single frequency, but rather a broad band of frequencies differing in sound level. The intensities of each frequency add to generate the sound we hear. The method commonly used to quantify environmental sounds consists of determining all of the frequencies of a sound according to a weighting system that reflects the nonlinear response characteristics of the human ear. This is called "A" weighting, and the decibel level measured is called the A-weighted sound level (or dBA). In practice, the level of a noise source is conveniently measured using a sound level meter that includes a filter corresponding to the dBA curve. Although the A-weighted sound level may adequately indicate the level of environmental noise at any instant in time, community noise levels vary continuously. Most environmental noise includes a conglomeration of sounds from distant sources that create a relatively steady background noise in which no particular source is identifiable. For this type of noise, a single descriptor called the Leq (or equivalent sound level) is used . Leq is the energy-mean A-weighted sound level during a measured time interval. It is the 'equivalent' constant sound level that would have to be produced by a given source to equal the average of the fluctuating level measured. For most acoustical studies, the monitoring interval is generally taken as one-hour and is abbreviated Leq-h. To describe the time-varying character of environmental noise, the statistical noise descriptors L 10, L50, and L90 are commonly used. They are the noise levels equaled or exceeded during 10 percent, 50 percent, and 90 percent of a stated time. Sound levels associated with the L 10 typically describe transient or short-term events, while levels associated with the L90 describe the steady state (or most prevalent) noise conditions. In addition, it is often desirable to know the acoustic range of the noise source being measured . This is accomplished through the maximum and minimum measured sound level (Lmax and Lmin) indicators. The Lmin value obtained for a particular monitoring location is often called the acoustic floor for that location. Finally, a sound measure employed by the State of California (and adopted by the City of Carlsbad) is known as the Community Noise Equivalence Level (or CNEL) is defined as the "A" weighted average sound level for a 24-hour day. It is calculated by Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 5 of 16 adding a 5-decibel penalty to sound levels in the evening (7:00 p.m. to 10:00 p.m.), and a 10-decibel penalty to sound levels in the night (10:00 p.m. to 7:00 a.m.) to compensate for the increased sensitivity to noise during the quieter evening and nighttime hours. ♦ APPLICABLE SIGNIFICANCE CRITERIA Exterior Noise Standards Noise impact significance for the proposed National University campus would fall under guidelines established by the California Department of Health Services, Office of Noise Control; Land Use Compatibility Guidelines dated 1987. This standard, which is based upon an earlier 1974 EPA document entitled, "Information on Levels of Environmental Noise Requisite to Protect Public Health and Welfare with an Adequate Margin of Safety", sets a maximum exterior noise threshold of 70 dBA CNEL for outdoor educational/recreational uses. The proposed National University campus located within the Carlsbad Pacific Center Building Three would not contain any uses of this type. State of California CCR Title 24 The California Code of Regulations (CCR), Title 24, Noise Insulation Standards, states that single-and multi-family dwellings, hotels, and motels located where the CNEL exceeds 60 dBA, must obtain an acoustical analysis showing that the proposed design will limit interior noise to less than 45 dBA CNEL. A standard of 50 dBA CNEL is typically applied to schools and educational uses (although more stringent standards have been established by the City/SANDAG due to the influence of McClellan-Palomar Airport). Worst case noise levels, either existing or future, must be used for this determination. Future noise levels must be predicted at least ten years from the time of building permit application. The City of Carlsbad has adopted the CCR Title · 24 standards. • McClellan-Palomar Airport CLUP Abatement Standards According to the Comprehensive Land Use Plan for McClellan-Palomar Airport adopted April 1994 (Source: SANDAG 4/94), all new schools and libraries located within the 60-65 dBA CNEL contours of the airport are subject to an acoustical study to assure that interior noise levels will not exceed 45 dBA CNEL. ♦ ANALYSIS METHODOLOGY Existing Conditions Field Survey Two Larson Davis Model 700 ANSI Type 2 integrating sound level meters were used as the data collection devices. The meters were placed at six locations around the structure corresponding primarily to the buildings north, south and eastern fac;ades. The monitoring locations are denoted in this report as ML's 1 through -6. The monitoring locations are shown below in Figures 3a through -f. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 6 of 16 ML 1 ML 2 ML4 ML 5 ML 3 ML 6 Figures 3a through -f: Ambient Noise Monitoring Locations ML 1 through ML 6 (/SE, 2002) The meters were mounted on a tripod roughly five feet above the ground in order to simulate the average height of the human ear above ground. The measurements were performed on January 7, 2002. All equipment was calibrated before testing at ISE's acoustics and vibration laboratory to verify conformance with ANSI S1-4 1983 Type 2 and IEC 651 Type 2 standards. Future Exterior Traffic Noise Modeling The Caltrans Sound 32 Traffic Noise Prediction Model with California (CALVENO) noise emission factors (based on FHWA RD-77-108 and FHWA/CA/TL- 87/03 standards) was used to calculate future onsite vehicular traffic noise levels. Model input included a digitized representation of the alignment of Interstate 5, as well as any local site topography, future ADT volume, vehicle mix, and receptor elevations. The roadway and site topography elevations were obtained from the project site plan (Source: National University, Hinton Group, 12110/01) and from USGS Digital Elevation Model (DEM) data. Model output consisted of peak hour energy-mean A-weighted sound levels (or Leq-h) for each receptor examined (consisting of the first and second floor areas of the existing structure). The model input and output decks are provided as attachments to this report. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 7 of 16 For this study, peak hour traffic values along Interstate 5 were calculated for a 10% traffic flow pattern and a 96/2/2 (automobiles/medium/heavy vehicles) percent mix in accordance with Caltrans practices and the observed distribution for this roadway during the site visit. For peak hour traffic volumes between approximately 8 and 12 percent (and an LOS between A and C), the energy-mean A-weighted sound level is statistically equivalent to the 24-hour Community Noise Equivalent Level (CNEL). Outside this range, a maximum variance of up to two dBA occurs between peak hour Leq-h and CNEL. Interior Noise Assessment Methodology The analysis methodology used to examine structural sound transmission and calculate resultant interior noise levels is identified in the American Society of Testing and Materials (ASTM) guidelines Volume 04 .06 entitled, "Thermal Insulation; Environmental Acoustics" Test Designation: E 413-87. Acoustical modeling of the project was performed in accordance with the above guidelines and included corrections for the following parameters: o Exterior noise level adjustment in front of each building element. o Exterior noise spectrum placement in front of each building element. o Correction for building facade reflection (per ASTM E 966-84 ). o Incident angle source correction (per ASTM E 966-84). o Room absorption correction. o Building element correction and adjustment (per ASTM E 413-87). o Geometric (sizing) and workmanship (construction error) corrections. The exterior noise level at the proposed structure was calculated in terms of A-weighted decibels (dBA) and converted to six octave band sound pressure levels at: 125, 250, 500, 1000, 2000 and 4000 Hertz. The interior noise level is a function of the sound transmission loss qualities of the construction material, the surface area of each structural element (e.g., wall , window, door, etc.), and the volume of the receiving room (i.e., the room's sound absorption in Sabins). Mathematically, this can be expressed as shown in Equation 1 below. where, Lint, is the interior A-weighted sound level at the ith octave band, Lex,, is the exterior A-weighted sound level at the ith octave band, TL; is the sound transmission loss at the ith octave band, S is the size of the room fa9ade in square feet, A; is the total room absorption in Sabins at the ith octave band, and, (1) Ms . Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 8 of 16 F',,0,,, Ac0,,, Q corr are correction factors for the building fac;:ade reflection, incident angle, and construction quality. ISE assumed that the exterior noise levels were calculated for free-field conditions with no interaction between existing structures. A 3-dBA building facade reflection correction was applied to the as-built structure to simulate local reflection effects. The necessary calculations were performed using the ISE STC-Ca/c 2.0 interior noise computation program. The output of which is provided as attachments to this report. Construction practices may degrade the calculated acoustical performance of walls and window assembles. The interior noise levels have been predicted in accordance with accepted acoustical methods and assume good construction techniques. A one-dBA quality correction factor was incorporated into the model · in accordance with Equation 1. ♦ FINDINGS Ambient Sound Measurement Results Testing conditions during the monitoring period were mostly sunny with an average barometric pressure reading of 29.94 in-Hg, an average westerly wind speed of 2 to 5 miles per hour (MPH), and an approximate mean temperature of 73 degrees Fahrenheit. The results of the sound level monitoring are shown below in Table 1. The values for the energy equivalent sound level (Leq), the maximum and minimum measured sound levels (Lmax and Lmin), and the statistical indicators L 10, L50, and L90, are given for the monitoring location. Measurements collected at the monitoring station reflect the typical sound levels associated with the community setting observed and the topography of the surrounding terrain. The hourly average sound levels recorded over the monitoring period were as high as 64.1 dBA Leq-h and was due primarily to traffic noise along Interstate 5, periodic activity along the San Diego Northern Railway (SDNR) alignment approximately one-block away (i.e., Coaster activity) and from McClellan-Palomar Airport. The background noise level, as indicated by the L90 metric was found to range from 56 to 61 dBA indicating the frequency of traffic activity as the dominant area noise source. The acoustical floor, as indicated by the Lmin metric was observed to be between 55 and 60 dBA. The project site lies within the 60 dBA CNEL influence area of McClellan- Palomar Airport and associated industrial uses. Traffic noise along Interstate 5 constitutes the dominant area noise source for the site. Aircraft noise contribution would be classified as de minimis compared to other surrounding sources. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 9 of 16 Future Traffic Noise Impacts The primary source of future noise at the project site would be from traffic along Interstate 5 (1-5). Avenida Encinas has negligible traffic levels from an acoustical standpoint (compared to 1-5) and thus will be omitted from further discussion. Future year 2020 volumes along 1-5 are projected to be as high as 256,000 ADT traveling at a speed of 65 MPH during free flow conditions (Source: SANDAG Series 9 Year 2020 Traffic Prediction Model, 10/00). TABLE 1: Measured Ambient Sound Levels -National University, Carlsbad CA 1-Hour Noise Level Descriptors in dBA Site Start Time Leq Lmax Lmin L10 L50 L90 ML1 2:00 pm 60.4 68 .5 57.0 63.5 60.0 59.0 ML2 2:05 pm 62.0 68.5 58.0 63.0 61 .5 60.0 ML3 3:10 pm 64.1 73.0 59.5 65.5 63.0 61.4 ML4 3:15 pm 61 .5 73.5 57.5 62.5 61.0 59.5 ML5 4:20 pm 63.4 74.5 58.5 63.5 61 .5 60.3 ML 6· 4:25 pm 57.5 64.0 55.0 59.0 57.0 56.2 Monitoring Locations: o ML 1: Meter positioned at the northern fai;:ade of building. GPS: 33°07.329' N x 117'19.42iW. EPE 14 ft. o ML 2: Meter positioned at the northeastern corner of building. GPS: 33°07.264' N x 117°19.38iW. EPE 14 ft. o ML 3: Meter positioned near the southeastern corner of building. GPS: 33°07.269' N x 11 7°19.381° W. EPE 14 ft. o ML 4: Meter positioned at the northeastern corner of building. GPS: 33°07.260' N x 117°19.361°W. EPE 14 ft. o ML 5: Meter positioned near the southeastern corner of building. GPS: 33°07.261' N x 117°19.370°W. EPE 14 ft. o ML 6: Meter positioned at the southern tai;:ade of building. GPS: 33°07.247' N x 117°19.398°W. EPE 14 ft. Measurements performed by ISE on January 7, 2002. EPE = Estimated Position Error. The results of the acoustical analysis are shown below in Table 2. Based on the model results, the worst-case exterior fac;ade noise levels would be as high as 71 dBA at second floor areas. This level will be utilized as the worst-case future exterior exposure level per CEQA. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 10 of 16 Interior Noise Levels Based upon the structural noise modeling, the estimated interior noise levels would approach 45 dBA CNEL with the existing 1/4" float glass windows as shown in Table 3 below. This would comply with the CCR Title 24 requirements and the provision adopted by the City of Carlsbad pertaining to the McClellan-Palomar Airport. Influence Zone. Mechanical ventilation would be required for this condition and is currently incorporated as part of the as-built structure. No additional mitigation would be required. TABLE 2: Predicted Fa~ade Noise Levels -National University, Carlsbad CA Ground Level Third Floor Second Story Receptor ID Receptor Location Areas (dBA) Areas (dBA) Areas (dBA) Notes: R1 North Building Fac;ade 67.3 69.7 n/a R2 East Building Fac;ade 68.7 71.1 n/a R3 East Building Fac;ade 68.7 71.2 n/a R4 East Building Fac;ade 68.5 71.0 n/a R5 South Building Fac;ade 67.5 69.9 n/a o Modeled using the Caltrans Sound 32 Traffic Noise Prediction Model with California (CALVENO) noise emission factors (based on FHWA RD-77-108 and FHWA/CA/TL-87/03 standards). o All sound levels given in dBA CNEL. o n/a indicates a non-applicable project configuration. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 11 of 16 TABLE 3: Anticipated Interior Noise Levels -National University, Carlsbad CA Receptor Area Anticipated Interior Receptor Area Anticipated Interior Level (dBA) Level (dBA) Room 101 39.8 Room 208 41 .7 Room 103 45.2 Room 209 44.2 Room 106 40.5 Room 210 41 .0 Room 107 40.5 Room 211 45.2 Room 108 40.6 Room 212 44.5 Room 202 44.6 Room 216 41 .9 Room 205 41 .9 Room 217 39.4 Room 206 41.2 Room 222 39 .9 Room 207 41 .1 Room 223 40.2 Calculated using the ISE STC-Calc 2.0 interior noise computation program. Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 12 of 16 ♦ CONCLUSIONS/ RECOMMENDATIONS The proposed National University campus design located within the Carlsbad Pacific Center Building Three was found to comply with all applicable City and State noise abatement criteria. No additional mitigation would be required. Should you have any questions regarding the above conclusions, please do not hesitate to contact me at (619) 640-9379. Sincerely, Rick Tavares, Ph.D. Project Principal Investigative Science and Engineering, Inc. Cc: Jeremy Louden, ISE Attachments: Sound 32 Input/ Output Decks Interior Noise Calculation Spreadsheets Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 13 of 16 S32 Input Deck -First Floor Levels NATIONAL UNIVERSITY-FIRST FLOOR T-PEAK HOUR TRAFFIC CONDITIONS, 1 24576 , 65 , 512 , 65 , 512 , 65 L-INTERSTATE 5, 1 N,480,535,52,I-1 N,642,332,50,I-2 N,825,112,48,I-3 N,982,-75,46,I-4 B-TOP OF SLOPE, 1 , 2 , 0 ,0 360,372,65,65,TS-1 585,155,64,64, 690,0,62,62, 770,-100,61,61, R, 1 , 65 ,10 290,155,66,Rl R, 2 , 65 ,10 350,155,66,R2 R, 3 , 65 ,10 380,120,66,R3 R, 4 , 65 , 10 390,97,66,R4 R, 5 , 65 ,10 350,85,66,R5 c,c Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 14 of 16 532 Input Deck-Second Floor Levels NATIONAL UNIVERSITY -SECOND FLOOR T-PEAK HOUR TRAFFIC CONDITIONS, 1 24576 I 65 I 512 I 65 I 512 I 65 L-INTERSTATE 5, 1 N,480,535 ,52,I-1 N,642,332,50,I-2 N,825,112,48,I-3 N,982,-75,46,I-4 B-TOP OF SLOPE, 1 , 2 , 0 ,0 360,372,65,65,TS-1 585,155,64,64, 690,0,62,62, 770,-100,61,61, R, 1 , 65 ,10 290,155,79.,Rl R, 2 , 65 ,10 350,155,79.,R2 R, 3 , 65 ,10 380,120,79.,R3 R, 4 , 65 ,10 390,97,79.,R4 R, 5 , 65 , 10 350,85,79.,R5 C,C Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11, 2002 Page 15 of 16 532 Output Deck -First Floor Levels SOUND32 -RELEASE 07/30/91 TITLE: NATIONAL UNIVERSITY EFFECTIVENESS/ COST RATIOS BAR ELE 1 2 3 0 *************************** 1 0.* 0.* 0.* 2 3 4 5 6 7 TS-1 Bl P2 Bl P3 ------------------------------------------------------ 1 1 BAR ELE 1 2 3 REC 0 0 0 REC 1 2 3 BARRIER DATA ************ ID 1 0 .* 0.* 0.* 1 DNL BARRIER 2 3 2 3 PEOPLE 4 5 HEIGHTS 4 5 4 5 LEQ(CAL) --------------------------------1 Rl 65. 10. 67 .3 2 R2 65. 10. 68 .7 3 R3 65. 10. 68.7 4 R4 65. 10. 68.5 5 RS 65. 10. 67.5 6 7 6 7 6 7 BARRIER HEIGHT INDEX FOR EACH BARRIER SECTION 1 1 1 CORRESPONDING BARRIER HEIGHTS FOR EACH SECTION 0. 0. 0. BAR ID TS-1 Bl P2 Bl P3 LENGTH TYPE 312.6 MASONRY 187 .2 MASONRY 128 .1 MASONRY Ms. Jayne Haussler National University Acoustical Compliance Survey Carlsbad Pacific Center, Carlsbad CA ISE Report #02-001 January 11 , 2002 Page 16 of 16 S32 Output Deck -Second Floor Levels SOUND32 -RELEASE 07/30/91 TITLE: NATIONAL UNIVERSITY-FIRST FLOOR EFFECTIVENESS/ COST RATIOS BAR ELE 1 2 3 0 *************************** 1 0 .* 0. * 0.* 2 3 4 5 6 7 TS-1 Bl P2 Bl P3 ------------------------------------------------------ 1 1 BAR ELE 1 2 3 REC 0 0 0 REC 1 2 3 BARRIER DATA ************ ID 1 0.* 0.* 0.* 1 DNL BARRIER 2 3 2 3 PEOPLE 4 5 HEIGHTS 4 5 4 5 LEQ(CAL) -------------------------------- 1 Rl 65 . 10 . 69 .7 2 R2 65. 10 . 71.1 3 R3 65. 10 . 71 .2 4 R4 65. 10. 71.0 5 RS 65. 10 . 69 .9 6 7 6 7 6 7 BARRIER HEIGHT INDEX FOR EACH BARRIER SECTION 1 1 1 CORRESPONDING BARRIER HEIGHTS FOR EACH SECTION o. o. o. BAR ID TS-1 Bl P2 Bl P3 LENGTH TYPE 312.6 MASONRY 187.2 MASONRY 128.1 MASONRY Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Class Room 108 600 8 4800 1 600 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (I:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 40.6 40.6 40.6 2000 Hz 29 40.6 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL}: Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Dean 103 210 8 1576 1 210 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum(~): 1000 Hz 29 Contribution {dBA) (Closed) (Open) 45.2 45.2 45.2 2000 Hz 29 45.2 4000 Hz 32 Room Type: Floor Area: Ceiling Height: • Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa<;ade (dBA CNEL): Incident Angle Correction: Building Fa<;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Class Room 106 735 8 5880 1 735 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) • 24.0 Sum (I:): 1000 Hz 29 Contribution {dBA) (Closed) (Open) 40.5 40.5 40.5 2000 Hz 29 40.5 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fac;ade (dBA CNEL): Incident Angle Correction: Building Fa<;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Class Room 107 735 8 5880 1 735 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area ( sq-ft) 24.0 Sum {l:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 40.5 40.5 40.5 2000 Hz 29 40.5 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction : Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Admissions 101 1575 8 12600 1 1575 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area ( sq-ft) 24.0 Sum (I.): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 39.8 39.8 39.8 2000 Hz 29 39.8 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fac;ade (dBA CNEL): Incident Angle Correction: Building Fac;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Open Lab 202 480 8 3840 1 480 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1 /4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (l:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 44.6 44.6 44.6 2000 Hz 29 44.6 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Classroom 205 625 8 5000 1 625 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (:E): 1000 Hz 29 Contribution {dBA) (Closed) (Open) 41 .9 41.9 41.9 2000 Hz 29 41.9 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Classroom 206 727 8 5816 1 727 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum{~): fooo Hz 29 Contribution {dBA) (Closed) (Open) 41.2 41.2 41.2 2000 Hz 29 41.2 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Classroom 207 753 8 6024 1 753 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 • STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum(:£): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 41.1 41.1 41.1 2000 Hz 29 41.1 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fac;ade (dBA CNEL): Incident Angle Correction: Building Fac;ade Correction: Quality Correction: Assembly# 1 Construction Window-1/4 Float Glass Classroom 208 561 8 4488 1 561 Traffic (NBS Spectrum , 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (l:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 41.7 41.7 41.7 2000 Hz 29 41.7 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window-1/4 Float Glass Class Room 209 780 8 6240 1 780 Traffic (NBS Spectrum, 1978) 71 · -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (1:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 44 .2 44.2 44.2 2000 Hz 29 44.2 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Classroom 210 660 8 5280 1 660 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz ' 28 Area (sq-ft) 24.0 Sum (:t): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 41 .0 41 .0 41.0 2000 Hz 29 41.0 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level@ Fac;ade (dBA CNEL): Incident Angle Correction: Building Fac;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Lounge 211 335 8 2600 1 335 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (:E): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 45.2 45.2 45.2 2000 Hz 29 45.2 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins}: Noise Source: Level @ Fa9ade (dBA CNEL}: Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window - 1 /4 Float Glass Faculty 212 294 8 2352 1 294 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area ( sq-ft) 24.0 Sum (:E): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 44.5 44.5 44.5 2000 Hz 29 44.5 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fa9ade (dBA CNEL): Incident Angle Correction: Building Fa9ade Correction: Quality Correction: Assembly# 1 Construction Window -1 /4 Float Glass Computer Equipped 216 624 8 4992 1 624 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1 /4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (1:): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 41.9 41 .9 41.9 2000 Hz 29 41.9 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level@ Fa<;ade (dBA CNEL): Incident Angle Correction: Building Fa<;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass Computer Equipped 217 800 8 6400 1 800 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum(!.): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 39.4 39.4 39.4 2000 Hz 29 39.4 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level@ Fa9ade (dBA CNEL):· Incident Angle Correction: Building Fac;ade Correction: Quality Correction: Assembly# 1 Construction Window -1/4 Float Glass- Classroom 222 702 8 5616 1 702 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum (:r.): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 39.9 39.9 39.9 2000 Hz 29 39.9 4000 Hz 32 Room Type: Floor Area: Ceiling Height: Room Volume: FMP: Room Absorption (Sabins): Noise Source: Level @ Fac;ade (dBA CNEL): Incident Angle Correction: Build ing Fac;ade Correction: Quality Correction: Assembly# 1 Construction Window-1/4 Float Glass Computer Equipped 223 795 8 6360 1 795 Traffic (NBS Spectrum, 1978) 71 -3 3 1 Construction Window -1/4 Float Glass 125 Hz 22 STC Rating 29 250 Hz 24 Operable% 0 500 Hz 28 Area (sq-ft) 24.0 Sum(~): 1000 Hz 29 Contribution (dBA) (Closed) (Open) 40.2 40.2 2000 Hz 29 4000 Hz 32