MEP-Technical Manual CDN 0408.qxd - Hambro

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METRIC 10 JOIST DEPTH SELECTION TABLES Concrete: f’ c = 20 MPa; density = 2 400 kg/m 3 Joist spacing = 1 285 mm NOTE: Plywood forms have to be slit in half for any depth. Slab thickness = 125 mm Residential Office Other Loading Building Building (LL=4,8 kPa) Dead Load (kPa) 4.30 4.30 4.30 Live Load (kPa) 1.92 2.40 4.80 Total Load (kPa) 6.22 6.70 9.10 SPAN c/c (mm) 9 150 9 750 10 350 10 975 11 575 12 200 * 12 800 * 13 400 * 14 025 * 14 630 * 15 240 * LH500 LH500 LH600 min = LH400 min = LH400 min = LH500 LH600 LH600 LH800 min = LH400 min = LH400 min = LH500 LH700 LH700 LH700 min = LH500 min = LH500 min = LH600 LH800 LH800 LH800 min = LH500 min = LH500 min = LH600 LH800 LH800 LH800 min = LH600 min = LH600 min = LH600 LH800 LH800 LH800 min = LH600 min = LH600 min = LH700 LH800 LH800 LH800 min = LH600 min = LH600 min = LH800 LH900 LH900 LH900 min = LH600 min = LH600 min = LH800 LH900 LH800 LH900 min = LH600 min = LH600 min = LH900 LH900 LH900 min = LH700 min = LH700 LH900 LH900 min = LH700 min = LH700 * Permanent line of cross bridging shall be installed at mid-span. LHXXX min = LHXXX : Optimal LH Series Joist Depth (mm) : Minimum Depth (mm) Allowed
JOIST DEPTH SELECTION TABLES 7. JOIST DEPTH SELECTION TABLES IMPERIAL 7.1 GENERAL INFORMATION 7.1.1 JOIST DEPTH SELECTION TABLES The following load tables give the optimized depth and the minimum depth for a specific span and a specific load following a certain slab thickness. Values indicated present a uniform load on all the length with a regular spacing and a f’ c = 3000 psi. The regular spacing is 4’-1 1 /4” for D500TM (H Series), 4’-2 5 /8” for DTC (LH Series) and 4’-0” for MD2000 ®. The tables have been done for three types of loading with different thickness of concrete. The three types are residential (live load = 40 psf), office (live load = 50 psf) and corridor or lobby (live load = 100 psf). These three types are used in the tables as example. Any others types of loading can be used for the Hambro design. The tables have been created with a certain super-imposed dead load. Even if your superimposed dead load is a little bit different, the optimal depth and the minimum depth in the table will be right. 7.1.2 DEFLECTION CRITERIA For all cases presented in the tables, deflection for live load does not exceed L / 360. 7.1.3 JOIST IDENTIFICATION The load tables are provided to aid engineers in selecting the most optimal depth of joist for a particular slab thickness and a specific loading. The engineer should specify the joist depth, slab thickness, the design loads, dead, live and total together with special point loads and line loads where applicable. Canam will provide composite joists designed to specially meet these requirements. 7.1.4 JOIST DESIGNATION The joist designation should simply be the joist depth followed by the total allowable service load and live load in pounds per linear foot applied on the joist. Example: H10-493/205 for Hambro D500 Example: LH24-493/205 for Hambro DTC Example: MDH10-493/205 for Hambro MD2000 7.1.5 EXAMPLE Find the optimal depth and the minimum depth for the following office project with Hambro D500 (H Series). Span: 32’-0” Slab thickness: 4” Joist spacing: 4’-1 1 /4” Concrete strength: 3 000 psi Yield point of steel: 55 ksi Concrete density: 145 lb./ft. 3 Dead load: 77 psf Joist: 2.5 psf Concrete: 48.5 psf Mechanical: 3.0 psf Ceiling (1/2”): 3.0 psf Partition: 20 psf TOTAL: = 77 psf Live load According to NBC: 50 psf Solution: From tables, find slab thickness = 4” with a span = 32’-0” In the table, with dead load = 77 psf and live load = 50 psf, we find: Optimal depth = H20 Minimum depth = H14 Then: H20 means depth = 20” H14 means depth = 14” 11
Page 1 and 2: Composite Floor System
Page 3 and 4: 1. GENERAL INFORMATION DESCRIPTION
Page 5 and 6: APPROVALS AND FIRE RATINGS APPROVAL
Page 7 and 8: 3. ACOUSTICAL PROPERTIES SOUND TRAN
Page 9 and 10: DESIGN PRINCIPLES AND CALCULATIONS
Page 27: DESIGN PRINCIPLES AND CALCULATIONS
Page 30 and 31: 5.2 MD2000 ® SERIES 5.2.1 DESCRIPT
Page 33 and 34: JOIST DEPTH SELECTION TABLES 6. JOI
Page 35 and 36: METRIC JOIST DEPTH SELECTION TABLES
Page 37 and 38: METRIC 6.3 MD2000 ® SERIES JOIST D
Page 39 and 40: METRIC JOIST DEPTH SELECTION TABLES
Page 41: METRIC JOIST DEPTH SELECTION TABLES
Page 45 and 46: IMPERIAL JOIST DEPTH SELECTION TABL
Page 47 and 48: IMPERIAL 7.3 MD2000 ® SERIES JOIST
Page 53 and 54: 8. TYPICAL DETAILS 8.1 D500 TM (H S
Page 55 and 56: SECTION 7 - JOIST BEARING ON CONCRE
Page 57 and 58: SECTION 15 - JOISTS BEARING ON A WO
Page 59 and 60: SECTION 23 - JOIST PARALLEL TO CONC
Page 61 and 62: SECTION 31 - FLANGE HANGER FOR BEAM
Page 63 and 64: SECTION 36 - MAXIMUM DUCT OPENING (
Page 65 and 66: 8.2 MD2000 ® SERIES TYPICAL DETAIL
Page 67 and 68: SECTION 7 - JOISTS BEARING ON CONCR
Page 69 and 70: SECTION 15 - EXPANSION JOINT AT ROO
Page 71 and 72: SECTION 23 - JOIST PARALLEL TO A ST
Page 73 and 74: SECTION 28 - CANTILEVERED BALCONY (
Page 75 and 76: 8.3 DTC (LH SERIES) TYPICAL DETAILS
Page 77 and 78: SECTION 7 - THICKER SLAB SECTION 5
Page 79: SECTION 11 - JOIST PARALLEL TO A CO
Page 82 and 83: 3.2 FABRICATION (a) Fabrication sha
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MEP-Technical Manual CDN 0408.qxd - Hambro

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