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, CONFIDENTIAL

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I]NIVERSITI TIJN HUSSEIN OITN MALAYSIA

FINAL EXAMINATION
SEMESTER II
sEsr 201212013

COURSENAME BUILDING SERVICES N

COURSE CODE BFB 4073 / BFB 40703

PROGRAMME 4 BFF

EXAMINATION DATE JttNE 2013

DURATION 3 HOURS

INSTRUCTION ANSWER ALL QUESTIONS

THIS PAPER CONSISTS OF TEN (IO) PACES

CONFIDENTIAL

It may consist of a single pure tone but in most cases contains many tones at different fiequencies and intensities.0s. Violin and guitar contribute the same amount ofsound level. him to get a good acoustic studio. are commonly us€d in acoustics to conduct experiments.ev€rberation time. BFB. which arc ftom piano. (6 narks) (c) Pleas€ illusFate sound wave at various velocities. Analys€ the estimat€d sound level if violin is turded off while piano and guilar ar€ tumed en2 q"1". (5 ma*s) Q2 (a) Noise is an undesirEd sound or also known as a pollutant to th€ rcc€iver. Raja is plaining to develop a rEcording studio and wo. List four (4) b6sic principles ofnoise control. Please provide funher explanarion on this tem.0s fo. Define briefly: D souno ptessllle iD sound wavelength (4 madG) O) Differ€ntiate b€twe€n direct sound path and .$NB Ql (4. ple3se propos€ solutions for both studios to achieve I . He is very ke€n in appointing you as the Ac_oustic Consultant Engine€r to design the studio. their reverberation time.{O7YBFB. one roof The workshop is fully equipped with all the machines and tools beside his prcmise.eflect€d sound Dalh. The total sound level for these thrce insfuments is l20dB.kshop unde. (6 msrks) (e) Two recording studios in RTM Johor have a different level of. Demonstrate and illustrate to him all th€ characigrs of building and acoustic system that he needs to consider in order fo. The reading for studio A is 0. (4 msrks) (c) Mr. the total sound level is I l7dB. (4 ma*s) (d) Philharmonic Hall consist ofthre€ soud sources. violin and guitar. (6 ma*s) . appendix. Its physical and emotional efects are dilficult to define quantitatively but the noise level its€lf carl be measured. When the sound fiom piano is hrned off.2s and for studio B is 2. (4 ma*s) O) 'Anechoic chambers.

(4 marks) (e) Briefly explain tlro (2) stEps to conhol an open sp6c€ sound inte. (12 marks) (b) What is a definition ofdaylight? ( I mark) (c) Large glazed areas may provide suflici€nt day lighting at som€ distance inro the building. (10 ma. Howevet it does have some disadvantages. offic€ buildings. Explain thrce (3) disadvantages of using large windows fo. including its advafiages and disadvantages.bome noise. ptease provide your slggestion and explanation on your suggestions.ks) . (9 marks) (d) What arc the strategies that can be done in improving the amount of light available. you are required to demonstrate and illustrate how a hall such as philharmonic Hall in KLCC can apply the acoustical conc€pt.{173/BIB{)71):t (d) Diff€r€ntiatc b€twe€n airtome noise and structure. (3 ma*s) Q3 (a) You are appointed by a client to design 6 lighting system for an offic€ block in Damarsom Damai. Propose and explain four (4) key strategies fo.ruption. BrB. €nergy" efficient lighting system. which come from a window? (3 marks) Q4 (a) A client r€quires advic€s in s€lecting two diff€rent lamp typeg eilher fluores€ent or incandescent light bulb to b€ used in hivher buitding. (4 marks) (0 Sound can b€ conholled to keep pleasure and harmonic condition.

The working plane is 0.e selected to be used in this case. The value for electric cunent for each luminaire is 100W. New Streamlite double fluorescent lamp lumina.|)7(B (b) The dimension ofthe drawing office is l7m x l2m and 3.5m high.{)TtBFB. As an appointed enginoer. please estimate the maximum distanc€ between luminaries if the spacing to height ratio (SHR) is 1. BfB.5. Refer appendix. pleas€ caloulate the numb€r of luminaries needed and determine the electrical consumption of the lighting system.9..ies a. ( I5 ma*s) -END OF QUESTTON- . The assunption made for mainisnanc€ factor is 0. ln addition.75m above the floor. This office has a white c€iling and light bfown coloured walls.

osaat bagi bacaao "reveabq-ation time" atau dikenali sebagai masa gerna.O73/BFB. Ia boleh mengandungi I ton atau banyak dengan berbeza iiekuensi dtn intensity. s€cara kuantitatif akan sifat fzikal atau kesan emosi tebpi jumlah bunyi bising tersebut dapat diukur.an dan ciri-ciri akustik yang perlu ada dalam mendapatkan prestasi bangunan yang terbaik. Analisa aggaran intcnsiti bunyi ketika violin dimatikan manak la piano dan girar dihidupkan? (6 narkah) (e) Dua bilik rakaman di RTM Johor mempunyai bacaan .teverberation time" yary berbezs. BFB.Bilik A mencatatkim bacaan o.IO7O3 Sl (a) Definasik n secsra ringkas: i) tekanan bunyi ii) gclombang buyi (4 markah) (b) Tenngkan p€.2saat dan bilik B 2. SaranlGn cara agar keduadua bilik berkenaan mendapat bacaan l.0sa6t. violi4 dan gitar s€rta menghasilk n jumlah intensiti bunl sebanyak l20dB. Raja tclah membuat pilihan untuk membangunkrn studio rakaman dan sebuah bengkel. Berikan gamba. Terangkan akan keadaan ini. Apabila bunyi yang dihosilkan oleh piano dimatikan.rcflected soud path'. Bengkel teFebut b€. (5 ina*ah) (a) Bunyi bising merupakan bunyi yang tidak dikehendaki d8n boleh dikatakan s€bagai p€ncemaran bunyi kepada pendengar. S€naraikan eEpet (4) prinsip asas pengawalan bunyi (4 ma*8h) (b) "Anechoio chamb€rs" selalu digunakan bagi menjalankan ujian akustik. (6 ma*ah) (c) Lal@*an gelombang bunyi pada kelajuan yang berbeza? (4 ma*ah) (d) Dewan Filharmonik mengandungitiga suftber bunyiyang dihasilkan daripada piano. Dia berbesar hari untuk melartik anda s€bagai juruteE perunding dalam bidang akustik untuk mer€kabentuK bangunan-bangunan ters€but. Intensiti bunyi b. (4 rnarkah) (c) Mr. . jumlah intensiti bunyi bertuka. menjadi ll7dB.. la juga sukar diuku.b€zaan di antara "direct sound path" dan '.gi violin dan girar adalah sama jumlahnya anrara satu sama lain.sebelahan dengan studio mkarnan dan dipenuhi dengan mesin dan alatan.

kah) (d) Nyatakan perbezaan di antara "airbome noise" dan "slrucfure-bome noise". ia juga mempunyai bebemps kelemahan. (10 markah) b) S€buah pejabat lukisan bersaiz l7m x l2m dan tinggi sebanyak 3. (3 ma*ah) s3 (a) Anda dilantik oleh pihak klien untuk merek bentuk system pencahayaan bagi sebuah ruang pejab@t di Damansara Damai.. Permukaan berkaca yang luas mungkin dapat menbekalkan cahaya ke dalan bangunan. ( l2 markah) (b) Apakah definasi bagi "daylight"? (1 ma. Terangkan tigr (3) kelemahan menggunakan c€rmin yang besar bagi sesebuah bangunan pejabat.kah) (c. (4 markah) (f) Bunyi boleh dikawal bagi mengekalkan keharmonian di sesuatu tempat. BFB4O73/BFB. iaitu jenis "fluorcsc€nt" atau "inc€ndesc€nt light bulb" untuk diguakan dalan bangunan beliau. . Waleu bagaimanapun. Kawasan kerja adalah 0.75m dari aras lantai. (9 markah) (d) Bagaimanakal anda boleh rneningkatkan jumlah cahaya yang masuk melalui tingkap ke dalam bangunan? (3 markah) v (a) Seorang klien merninta nasihat anda dalam membuat pernilihan di antara dua jenis lampu. Mentol jenis "SE€arnlite double fluorescent" yang baru telah dipilih untuk digunakan dalam kes ini.5n mempunyai siling berwarna putih dan dinding yang dicat dengan wama perang cair. Cadang dan terangkar enpat (4) strat€gi utama dalam m€ncapai pencahayaan menggunakan tenaga secaB efisy€n. Anda dikehendaki menggaftbarkan bagaimana dewan seperti Filharmonik di KLCC dapat mengsplikasikan konsep akustik. (2) cjt"a mengalasi gangguan yang disebabkat oleh ruang terbuka. Berikan cadangan dan penerangan bagi pemilihan tersebut bersama kebaikan dan kebuukan bagi jenis lampu yang dipilih.O7OJ (6 ma. (4 markah) (e) Terangkar s€caB ringkas du.

BFB4O r'BFB4O?O:} Andaian yang dibuat bagi factor penyclenggaraan ialah 0. (15 lnalkah) -SOALAI\I TAMAT- .5. Scbagai seorang jurutera ydng dilantilq kirs jumlah pencahayaal yang diperlukan dan jumlah tenaga elektrik yang digunakan.Nilai arus elekaik bagi setiap mentol ialah 100W. Kemudiar! anggarkan jarak malsimum di antan mentol jika nisbah jar&k k€ tinggi (SHR) ialah 1.9.

\ \ *. A i: 5 BFn ol Ed 0 1 2 3 4 5 6 7 I 9 10 DilErencs Beivefi Totd Ndss L€vel atd Bactorcr'd Ndse .-G.r. l-n r--6 iwo L-v. BFB{7!/BFB4O7II} APPEN'DIX FINAL DL{UINATION SEMESTER/SESSION: SEMESTER I 201212013 PROGRAMME : 4 BFF COURSE : BUILDING SERVICE II SUBJECT CODE: BFB4073 / BFB 40703 Addirional of Sound Table and Background Nois€ Correction E "'t 5.- a !r \ \ I 2315a?a ctltt . (<lat Background Noise Correction E 't0 6.

k with 6mall detail 900 .2 Suburbin strc ct liEhtirg 5 DFcliag 50 .0 tO 20 200 250 RmD vorume (mr x roo) Typical value of illuminance -!pli. BFB4OTJ / BFB4O7O3 APPENDX FINAL EXAMINATION SEMESTER. 150 Corridors 100 Gracral oEcee 400 Dra*iog oEcc 600 Prolongcd t .6 4.2 e lo o.8 & o.O 6.O la t.atioD Illnhipalr./SESSION: SEMESTER I 2OI2'OI3 PROGRAMME :4BFF COURSE : BUILDINC SERVICE II SUBJECT CODE : BFMO73 / BFB 40703 Additional of Reverberation Time Table Room voluh€ (tt3 x rooo) 22 2.e lltrr) Eaergcncy Lightiag 0.

Cream 70 .50 300 4.IE 50 50 43 4a 52 5't 63 67 70 71 't6 50 30 nll 5t 57 62 65 70 50 t0 42 46 53 56 61 6'l 7) 30 50 39 12 46 50 55 59 6t 65 61 30 30 31 t7 a2 16 5l 55 5A 62 65 30 l0 30 33 36 12 4A 52 55 59 62 t0 .ll 0.r Ccilrs W. 80 C€fing Skyeue 50_60 CeilirE Ligm8rown 2O_3O UAlh LEm$dE 50-60 \ dls oark crey 20 _{ ha||s Blaci( 10 Floor 10 Utilizatio.00 t25 t.75 1. BFB4073 / BF840703 APPEIIDIX FINAL EXAMINAfiON SEMESTER/SESSION: SEMESTER I 20122013 PROGRAMME : 4 BFF COURSE : BUILDING SERVICE ll SUBJECT CODE: BFB4073 / BFB 40703 Luminance factoas for painted surfaces Lumiratce fadors br painted surbces gurtacar typtcirt Colotr Lun{nrtFt Fac{oa5 Cei[rE \^rl*le.00 5.OO 2.00 10 50 48 53 59 a4 1l ?5 79 63 EO m 30 40 46 5l 5't 6 69 13 7E a2 70 t0 35 40 46 5t 59 646a74 .5 2. factors for a bar€ fluorescent tube fitting with two 5t W 1500 mm lamDs (%) Roohhd.