RF-TIMBER Pro - Dlubal Software

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8 Example The Details displayed in the lower part of the table correspond to the designs described in [8]. σ σ M = S 1152kN/ cm = 1129.33cm³ y m ,d = y N 60.75kN = = A 308cm² c ,0,d = 1.02 kN/ cm² 0.197 kN/ cm² According to [4] we have to reduce the allowable compressive stress for the stability analysis (buckling design) by the buckling coefficient k c that depends on the slenderness λ. d 22 cm i y = = = 6.35 cm 12 12 b 14 cm i z = = = 4.04 cm 12 12 The slenderness according to [4] is calculated as follows: Sk 224 cm λ z = = = 55.4 iz 4.04 cm λ S = i 640 cm = 6.35 cm y k = y 100.8 Buckling coefficient k c according to [4] section 6.3.2 (intermediate values can be interpolated linearly): k c,z = 0.733 k c,y = 0.301 Stability analysis Design according to [4] eq. (6.23): f f = ⋅k 2.4 ⋅ 0,9 = 1.3 m,k mod m ,d = γm 1.66 kN/ cm² N M 0.197 1.02 Design: η A S 1 = + = + = 1.066 > 1 k ⋅ f k ⋅ f 0.301⋅1.45 1.66 Shear design c,y c,o,d m m,y,d Design of shear from transverse force according to [4] section 6.1.7: f f = ⋅k 0.4 ⋅ 0.9 = 1.3 v,k mod v ,d = γm 0.277 kN/ cm² The shear stresses can be determined by the stress point details with the corresponding statical moments of area (see Figure 2.12, page 18). τ Vy ⋅ Q = I ⋅ t Vz ⋅ Q + I ⋅ t 7.2kN⋅847cm³ = 4 5030.67cm ⋅ 22cm z,i y,i d = z i y i τd 0.055 Design: = = 0.199 ≤ 1 f v, d 0.277 0.055kN/ cm² 66 Program RF-TIMBER Pro © 2011 Ing. Software Dlubal
8 Example 8.3.2 Serviceability Limit State Design We create another load combination in RFEM with different partial safety factors for the serviceability limit state design. CO2 = 1.0 · LC1/s + 1.0 · LC2/s In the add-on module RF-TIMBER Pro, we select the load combination CO2 for the design in the Serviceability Limit State tab of table 1.1 General Data. Figure 8.9: Table 1.1 General Data, tab Serviceability Limit State We click the blue check mark button to assign the Design Combination acc. to 2.2.3 (2) w inst SC to the selected load combination. Then, we enter member 1 in table 1.8 Serviceability Data (see the following Figure 8.10). Program RF-TIMBER Pro © 2011 Ing. Software Dlubal 67
Page 1:
Version September 2011 Add-on Modul
Page 4 and 5:
1 Introduction 1. Introduction 1.1
Page 6 and 7:
1 Introduction 1.4 Open the Add-on
Page 8 and 9:
2 Input Data 2. Input Data The desi
Page 10 and 11:
2 Input Data A multiple selection o
Page 12 and 13:
2 Input Data 2.1.3 Fire Resistance
Page 14 and 15:
2 Input Data Other Settings In the
Page 16 and 17: 2 Input Data Material Properties Th
Page 18 and 19: 2 Input Data Figure 2.11: Dialog bo
Page 20 and 21: 2 Input Data 2.4 Load Duration and
Page 22 and 23: 2 Input Data 2.5 Effective Lengths
Page 24 and 25: 2 Input Data Figure 2.17: Selecting
Page 26 and 27: 2 Input Data 2.7 Tapered Members Th
Page 28 and 29: 2 Input Data Beam Type The beam typ
Page 30 and 31: 3 Calculation 3. Calculation 3.1 De
Page 32 and 33: 3 Calculation 3.1.3 Serviceability
Page 34 and 35: 3 Calculation 3.2 Start Calculation
Page 36 and 37: 4 Results 4. Results Table 2.1 Desi
Page 38 and 39: 4 Results 4.2 Design by Cross-secti
Page 40 and 41: 4 Results 4.5 Design by x-Location
Page 42 and 43: 4 Results 4.7 Governing Internal Fo
Page 44 and 45: 4 Results Surface Area The program
Page 46 and 47: 5 Results Evaluation 5.1 Results in
Page 48 and 49: 5 Results Evaluation In the Factors
Page 50 and 51: 5 Results Evaluation 5.3 Filter for
Page 52 and 53: 6 Printout 6. Printout 6.1 Printout
Page 54 and 55: 7 General Functions 7. General Func
Page 56 and 57: 7 General Functions 7.2 Cross-secti
Page 58 and 59: 7 General Functions 7.3 Material Ex
Page 60 and 61: 7 General Functions Excel / OpenOff
Page 62 and 63: 8 Example 8.2 Calculation with RFEM
Page 64 and 65: 8 Example Figure 8.5: Table 1.3 Cro
Page 68 and 69: 8 Example We do not modify the refe
Page 70 and 71: A Literature A Literature [1] DIN 1
Page 72: B Index Load case .................
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