DGU Design For Glass Division [PDF]

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STRUCTURAL CALCULATION Double glazed Glass Design Prepared By 0

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Structural Check for Double glazing cable galzing unit 13.52mm FT+Airspace+6 mm FT

Code References:ASTM E 1300-07 Standard practice for determining load resistance in building Glass description a= 2945 b= 1600 t1 = 13.52 t2 = 6 Modulus of elascity of Glass,Eg Unit weight of glass,γ

mm mm mm mm = =

Loading Design wind load,P

LS1 LS2

= =

q1 q2

= =

Glass Long dimension Glass short dimension Thickness of inner lite (Table 4) Thickness of outer lite (Table 4) 72000 Mpa 24.525 kN/m3

=

1.081 14.752 P/LS1 P/LS2

Glass Load Resistance Support condition

1.51 Kpa

Load sharing factor for inner lite (Table 5) Load sharing factor for outer lite (Table 5) = =

:

1.40 Kpa 0.10 Kpa

Load carried by inner lite Load carried by outer lite

Edges simply supported (spring support in STAAD Pro)

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STRUCTURAL CALCULATION Double glazed Glass Design Prepared By 0

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2.4

NFL1

=

2.4 Kpa

Non factored load for inner lite ( Fig-A1.6-Upper chart)

NFL2

=

2.4 Kpa

Non factored load for inner lite ( Fig-A1.6-Upper chart)

GTF1

=

3.6

Glass type factor for inner lite (Table-2)

GTF2

=

3.6

Glass type factor for outer lite (Table-2)

Rev LR1

LR2

STRUCTURAL CALCULATION Double glazed Glass Design Prepared By 0

NFL1*GTF1*LS1 = Internal lite Load resistance = 9.33984 Kpa Load capacity of inner lite is greater than actual load SAFE NFL2*GTF2*LS2 = Outer lite Load resistance = 127.457 Kpa Load capacity of inner lite is greater than actual load SAFE

Glass Center Deflection b a L= δ

= 1600 mm (Glass short dimension) = 2945 mm (Glass long dimesnion) Min(2945,1600) = 1600 mm = Min (L/60,30) = 26.67 mm (Allowable Glass deflection)

Center deflection for inner lite (As per X2.1) (0.553-3.83(a/b)+1.11(a/b)2-.0969(a/b)3 r0 = = r1 r2

x

= = = = =

-3.340 (-)2.29+5.83(a/b)-2.17(a/b)2+0.2067(a/b)3 2.378 1.485-1.908(a/b)+0.815(a/b)2-0.0822(a/b)3 0.222 ln(ln(q1*(a.b)2/(Eg.t1^4) 0.939

Center of glass deflection

= =

w=

t.e(r0+r1.x+r2.x2) 5.427 mm

Adopt:13.52 mm thick FT/AIR SPACE/6mm thick FT glass

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