Design Calculation-glass Balustrade

August 9, 2017 | Author: msiddiq1 | Category: Wind Speed, Bending, Strength Of Materials, Pascal (Unit), Wound
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Design Calculation-glass Balustrade...




General 1. Design Philosophy - PREAMBLE The purpose of this calculation is to verify the thickness of glass and its supporting structure for its integrity, strength and stability verification. The result of this conclusion is that the structure considered adequate in meeting the required of design criteria. The balustrade at the balcony area comprises of 16mm thick clear tempered glass fixed as per the shop drawings. The model has been analysed for the various load combinations as explained in the load built-up. 2. Unit of Measurement Unit of measurement in design shall be in Metric system.


Design Calculations 1. Design Code and reference: Loading as per BS 6399 Part 1, 1996 Wind loads as per BS 6399 Part 2, 1997 2. Materials GLASS PROPERTIES 16mm thick clear tempered glass The modulus of elasticity E = 72.7 GPa The modulus of Shear G = 29.6 GPa The modulus of Rupture = 41.4 MPa Poisson Ratio = 0.23 Density = 24.525 KN/m3 Flexure Strength = 41MPa = 41 N/mm2

3. Loading Dead Load – Self weight is considered The Forces acting on the Handrails apart from self weight are as follows which is complying with the required standards: Loading as per BS 6399 Part 1, 1996 Table 4 – Minimum horizontal imposed loads for balustrades has been considered. The occupancy type used is C3 Group (ix)

Horizontal uniformly distributed line load at top of the glass – 0.74 KN/m Horizontal uniformly distributed load applied to the infill area – 1.0 KN/m2 Point Load applied to part of the infill of glass – 0.50 KN Wind loads calculations as per BS 6399 Part 2, 1997: Wind loads (WL) calculated as per BS 6399 Part 2 – 1997: Basic wind speed Vb = 45.0 m/sec Hourly basic mean wind speed = Basic Wind speed / gust factor Gust factor = 3.19 as per Table 24 with effective height
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