MidtermPracticeExam

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George Brown College Canada *

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2007

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Mechanical Engineering

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Feb 20, 2024

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------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam Student’s Name Student’s ID# Signature ARCH 2007 Fall 2023 Mid-term Exam Section A: 15 Multiple Choice Questions (1 mark per question, use the Scantron card) 1. Which of the following ‘Objectives’ aims a containing a fire at its point of origin? A OS 1.1 B OS 1.2 C OS 1.3 D OS 1.4 2. The building area of a one-storey Police Station with a detention quarter is 300m 2 . You plan to add a mezzanine to this police station. Which of the following mezzanines will not change the occupancy classification of this building? A. Addition of a mezzanines will not impact the occupancy type B. A 150m 2 mezzanine with two exits C. An open mezzanine with the area of 100m 2 D. A 50m 2 mezzanine to be used a s a store 3. A combustible skylight, with a 20 m 2 horizontal projection, is installed on a roof in a building required to be non-combustible. If the area of the ceiling is 60 m 2 , determine the flame spread rating of this skylight. A. The FSR should be 75 B. 10% of the skylight is permitted to have a FSR of 150 C. The FSR could be 300 if the occupant load of the space is less than 60 D. The FSR is not regulated if the building height is not exceeding three-storeys 4. What is the fire protection rating required of a ‘closure’ fixed on the firewall between a shop and a distillery? A 2 hr B 3 hr C 1 hr D 1.5 hr Version A

------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam 5. Under which of the following circumstances a 2-hour fire wall is permitted to terminate at the underside of a roof slab? A. If the roof slab is designed as a ‘green roof’ with vegetation B. If the roof slab is constructed with non-combustible materials C. If the fire resistance rating the roof slab, both sides of the wall, is at least 1 hour D. Under no circumstances, a fire wall is permitted to terminate at the underside 6. Assume a 3.5m long and 2m high fire separation between two industrial suites: only one suite is sprinklered. The suites are connected through a protected opening that reaches the maximum permitted size. Calculate how much more you could add to the opening if the second suite is also provided with a sprinkler system? A 4 m 2 B 11 m 2 C 15 m 2 D The size of the opening cannot be changed 7. Assume a 4-storey building having a storage garage in the basement, a warehouse for flammable liquids in the first storey, and residential suites in upper storeys. Determine the occupancy classification of this building if you were to design its floor assemblies? A. All storeys as F-3 B. All storeys as F-1 C. All above grade storeys as F-1 D. These occupancy types cannot be combined (8) Assume a 6-storey hospital. Its roof is 4000m 2 , and used for a 400m 2 helipad, a 50-seat café, two lecture halls, each 200m 2 , a 1500m 2 exhibition space, and three offices, 200m 2 each. What are the major occupancy types of this roof? A. A-2, D, E and F-2 B. A-2, D, E and F-3 C. A-2, D and E D. A-3 and D

------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam (9) Calculate the total fire resistance rating of an interior wall assembly made of wood studs at 406mm, mineral fibre insulation and 13mm thick Gypsum and sand plaster on lath? A 70min. B 105min. C 65min. D 85min. (10) Assume a three-storey building, in which the first storey is a storage garage, the second storey is an office, and the third storey is a 50-seat restaurant. Your client wants to change the first storey into a spray-painting operation and a lacquer factory. How should you classify this building after this re-purposing to redesign the fire-resistance rating of floor assemblies ? A As a Group F Division 1 building, the most restricted major occupancy on the lowest storey B As a Group F Division 3 building, the major occupancy of the lowest storey C As a Group D building, the major occupancy that occupies most of the spaces D This change of use is not permitted by the code (11) Assume a two-storey building. The first storey is a repair garage, and the second storey is a 45-seat cafe. What should be the minimum cover of the reinforced concrete beams that support the floor of the cafe? A 25 mm Type S concrete B 20 mm Type S concrete C 25 mm Type N concrete D Both A and C can provide the required fire resistance (12) A three-storey office building, with a building area of 2100m 2 , is built as a combustible construction without sprinklers. How many streets should it face? A. 3-storey combustible building should be sprinklered B. 1 street C. 3 streets D. 2 streets (13) What is the maximum building area a six-storey condominium built as a combustible construction, if it’s sprinklered? A Six-storey Group C buildings cannot be built as a combustible building B 2500m 2 C 1500m 2 D 1900m 2

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------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam (14) In which of the following mercantile occupancy, OBC requires one water closet to serve both sexes? A A one-storey mercantile building with the area of 30m 2 B A one-storey mercantile building with the area of 50m 2 C A two-storey mercantile building, and each storey is 300m 2 D Mercantile buildings are not permitted to be served by one water closet for both sexes (15) You are designing a three-storey high arena with the building area of 3000m 2 . Your client informs you that this building would be occasionally used as an exhibition space. How would you change its construction classification? A A combustible building B A non-combustible building C A combustible or non-combustible classification D Cannot be determined with given data

------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam 1). Assume a fire separation, built with ‘Type N’ solid concrete blocks covered on both sides with 15mm thick gypsum plaster, between a spa and a 35-seat café. Find the ‘equivalent thicknesses’ of the wall and plaster? (3 marks)? 1. FRR required between Spa and Café OBC ref: 0.5 Between D and A-2: 2 Calculation Min. thickness of Type N: 0.5 Multiplying factor 15mm Gypsum plaster on Type N solid: 0.5 ET calculation: Max. plaster thickness: Gypsum plaster ET: 1.0 3 Wall thickness and Plaster thickness (After ET calculation) 0.5 2). A community center has a 15m 2 stage to practice theatrical performances, a 75m 2 reading room, a 55m 2 office, a 12m wide and 40m long indoor swimming pool without wave action and flat bottom that is 1.2m deep, a 30m 2 lounge, and a 18m 2 kitchen. Determine the plumbing requirement of its male washroom (3 marks). 1 Occupant Load Practice Stage: OBC Ref: 1.0 Reading room: Indoor pool: Lounge: Kitchen: 2 WC Male washroom Practice Stage: Reading room: Indoor pool: Lounge: Kitchen: Total no of WCs 1.0 3 Plumbing fixtures: Urinals: WCs: Lavatories: 1.0 Section B: 4 questions

------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam 3). You are adding a mezzanine floor in a repair garage to be used as a café for 35 patrons and want to support it with two square steel columns (152mm x 152mm: the mass of 37kg/m) and cover the columns with Type X gypsum wallboards to provide the required fire resistance to the columns. Find the required minimum thickness of wallboard (2 marks). 1 Required FRR: Occ. Types and FRR OBC Ref 0.5 2 M/D ratio 0.1 3 Thickness of Type X gypsum wallboard 0.5 4. Assume two non-sprinklered parking garages in one lot in a location firefighting is not adequate. Their sides that face each other are 22m long and 7m high and are 6.4m away from each other. Your client wants to change one building into a repair garage. Determine the exposing building face construction requirement of the repair garage? (2 marks) 1 Limiting Distance Without adequate firefighting: OBC ref: 0.3 2 Exposing Building Face 0.2 3 Unprotected openings (%) 0.5 4 Construction requirements 1.0

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------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam Answers Section A No Answer Reference/ Explanation (1) B Vol. 1, Div. A: Objectives (2) C Vol. 1, Div. B, Part 3: 3.1.2.4. & 3.2.1.1.(3): A mezzanine that is not required to be considered as a storey (3) A Vol. 1 Div. B, Part 3: 3.1.5.4.(b): area of skylight’s projection is > 25% of ceiling space (4) A Vol. 1, Div. B, Part 3: Table 3.1.3.1. & Table 3.1.8.4.: Required FRR of the wall is 3h (5) C Vol. 1, Div. B, Part 3: 3.1.10.3.(2).a.(i) (6) C Vol. 1, Div. B Part 3: 3.1.8.6: Max size 11m 2 , if sprinklered 22m 2 : current size 3.5x2=7m2, can add 22-7=15m 2 (7) D Vol. 1, Div. B, Part 3: 3.1.3.2.(1) (8) C Vol. 1, Div. B, Part 3: 3.2.2.8: (helipads up to 10% are not considered) (9) B Vol. 2, SB-2, Tables 2.3.4.B, 2.3.4.C & 2.3.4.D 20min + 15 min + 2(35min) = 105min. (10) D Vol. 1, Div. B, Part 3: Div. B, Part 3: 3.1.1.2 (11) D Vol. 2, SB-2: Table 2.9.1 (12) C Vol. 1, Div. B Part 3: 3.2.2.53. (13) C Vol. 1, Div. B, 3.2.2.43.A(1)(d) (14) C Vol. 1, Div. B, Part 3: 3.7.4.8.(3) (15) A Vol. 1, Div. B, Part 3: 3.2.2.29 Section B 1) 1. FRR required between Spa and Café OBC ref: 0.5 Between D and A-2, 1 hr Vol.1, Part 3: Table 3.1.3.1 2 Calculation Min. thickness of Type N: 73mm Vol.2, SB-2 Table 1.7.1. 0.5 Multiplying factor 15mm Gypsum plaster on Type N solid: 1.25; 15x1.25x2=37.5mm Vol.2, SB-2 Table 2.1.1. 0.5 ET calculation: Wall: 73-37.5 = 35.5mm: Min FRR 30 min (50% of 1h): 44mm Max. plaster thickness: 73-44= 29mm Gypsum plaster ET= 29/ (1.25x2) = 11.6mm Vol.2, SB-2 Table 2.1.1: 1.0 3 Wall thickness and Plaster thickness (After ET calculation) 44 mm thick Type N wall covered with 12mm thick plaster on both sides. 0.5 2) 1 Occupant Load Practice Stage: 15m 2 /0.75m 2 pp = 20 OBC Ref: 0.6 Table 3.1.3.1. Reading room: 75m 2 /1.85m 2 pp = 41.54… 41 Table 3.1.3.1. Indoor pool: (12x40)/1.4 = 342.85…. 343 3.1.1.17.(3)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------- HM_ARCH1013_Spring2023_Mid-Term_Practice Exam Lounge: 30m 2 /1.85m 2 pp = 16.21…. 16 Table 3.1.3.1. Kitchen: 18m 2 /9.3m 2 pp = 1.94… 2 Table 3.1.3.1. 2 WC Male washroom Practice Stage: 1 (for 10 males) 3.7.4.3.A 0.2 Reading room: 1 (for 21 males) 3.7.4.3.A Indoor pool: 3 (172 males) 3.7.4.3.C Lounge: 1 (for 8 males) 3.7.4.3.A Kitchen: 0 (for 1 male) Total no of WCs 6 WCs 3 Plumbing fixtures: Urinals: 4 WCs: 2 Lavatories: 3 0.8 3). 1 Required FRR: Occ. Types and FRR OBC Ref F-2 & A-2/ 2h Table 3.1.3.1. 0.5 2 M/D ratio 37/ (0.152x2x2) = 60.9 Vol. 2: 2.6.4. 0.1 3 Thickness of Type X gypsum wallboard 38.1mm Vol. 2: 2.6.1.F 0.5 4) 1 Limiting Distance Without adequate firefighting: 1.6m OBC ref: 0.3 Definitions 9.10.15.3. 2 Exposing Building Face 22m x 7m = 154m 2 3.2.3.1 0.2 3 Unprotected openings (%) 4% (L/H ratio 3.14:1 and LD is 1.6m) Table 3.2.3.1.C 0.5 4 Construction requirements 2hr wall built as a non-combustible construction with non-combustible cladding Table 3.2.3.7. 1.0