STRUCTURAL CALCULATIONS
(Transome Fixing)
Page 1 of 7
TYPICAL TRANSOME FIXING
Transome Reactions at ends
Due to Wind (Rx)
Due to Dead Load (Ry)
=
=
0.978 kN
0.372 kN
(Refer Typical transome calc)(GL-14/15)
(Refer Typical transome calc)(GL-14/15)
e2
edx
d2
edy
sy
b
e1
d1
edy
Elevation
Leg-2
Leg-1
Plan
Cleat
Transome Fixing
Typical Cleat
No.of Cleat Profiles (np)
=
2.00
Fixing Cleat
Thickness of Profile (t)
Min. Width of Profile (b)
Depth of Profile leg (d1)
Depth of Profile leg (d2)
eccentricity (e1)
eccentricity (e2)
=
=
=
=
=
=
5.00 mm
38.00 mm
25.00 mm
25.00 mm
12.50 mm
12.50 mm
Screw Spacing (sy)
Screw Spacing (sz)
Edge distance (edx)
Edge distance (edy)
Edge distance (edz)
=
=
=
=
=
18.00 mm
- mm
12.50 mm
10.00 mm
12.50 mm
Check for Leg-1
Shear Stress (fs1)
=
Shear Stress (fs2)
=
Permissible Shear Stress (fsp)
Interaction Eq:((fs1 +fs2)/fsp)
=
7.82 N/mm (Rx/(bt))
2
0.98 N/mm (Ry/(npbt))
2
51.00 N/mm (For 6063-T6 as per IS:8147)
=
0.17
Bending Moment (M1)
=
Max Bending stress (fb1)
Bending Moment (M2)
=
=
Max Bending stress (fb2)
=
Permisisble Bending Stress (fbp)
=
2
<
1.00 (OK)
1.22E+04 N-mm (Rx x e1)
2
2
77.21 N/mm (6M1/bt )
2.33E+03 N-mm (Ry x e2/np)
2
2
1.93 N/mm (6M2/tb )
2
96.00 N/mm
Page 2 of 7
(For 6063-T6 as per IS:8147)
Interaction Eq:((fb1 +fb2)/fbp)
=
0.82
Check for Leg-2
Shear Stress (fs3)
=
Permissible Shear Stress (fsp)
=
0.98 N/mm (Ry/(npbt))
2
51.00 N/mm (For 6063-T6 as per IS:8147)
Bending Moment (M3)
Bending Moment (M4)
=
=
Base Pressure Induced (p)
Max Projection (a)
Bending Moment Induced (M5)
=
=
=
Bending Stress induced
=
Permisisble Bending Stress (fbp)
=
<
1.00 (OK)
2
1.22E+04 N-mm (Rx x e1)
4.65E+03 N-mm (Ry x e1)
2
2
2
3.21 N/mm (6M3/d2b )+(6M4/bd2 )
12.50 mm
2
250.52 N-mm (pa /2)
2
2
60.12 N/mm (6M5/t )
2
96.00 N/mm (For 6063-T6 as per IS:8147)
Since All Stress are within Limits, Cleat Profile is OK
Check For Screws (Fixing on Transome)
Screw Material
=
Stainless Steel Grade A4/70
2
Yeild Strength (Fy)
=
450 N/mm
No. of screw (ns)
Dia of screws (ds)
=
=
Net section area (as)
=
2.00
3.96 mm
2
9.23 mm
Factor of safety (Fs)
=
1.50
Vertical shear per screw (Vsv)
Horizontal shear per screw (Vsh)
=
=
0.09 kN
0.00 kN
Resultant shear (Vr)
=
Factored Shear stress
=
(Vsv2+Vsh2)0.5
0.09 kN
2
15.11 N/mm (fsVr/as)
Permissible Shear stress
=
180.00 N/mm
Min Thickness (tmin)
Dia of Hole (dh)
=
=
Bearing Stress
=
2.00 mm
5.46 mm
2
12.8 N/mm (FsVr/dhtmin)
Permissible Bearing Stress
=
139.0 N/mm
(#8)
(0.75 x π x ds2/4)
(Ry/npns)
2
2
(0.4Fy)
(For 6063-T6 as per IS:8147)
Hence 2 nos 3.96 dia (#8) SS screws are Provided on front cleat
Check For Screws (Fixing on Mullion)
Screw Material
=
Stainless Steel Grade A4/70
2
Yeild Strength (Fy)
=
450 N/mm
No. of screw (ns)
=
2.00
Page 3 of 7
Dia of screws (ds)
=
Net section area (as)
Spacing of screw (sv)
Spacing of screw (sh)
=
=
=
18.00 mm
- mm
Factor of safety (Fs)
=
1.50
Vertical shear per screw (Vsv)
=
Horizontal shear per screw (Vsh) =
Shear per screw due to Moment :(Vse) =
3.96 mm
2
9.23 mm
(#8)
(0.75 x π x ds2/4)
0.09 kN
0.49 kN
(Ry/npns)
(Rx/ns)
0.26 kN
(Rye2/sv)
Factored Shear stress
=
(Vsv2+(Vsh + Vse)2)0.5
0.75 kN
2
122.35 N/mm (FsVr/as)
Permissible Shear stress
=
180.00 N/mm
Min Thickness (tmin)
Dia of Hole (dh)
=
=
Bearing Stress
=
2.00 mm
(mullion web)
5.46 mm
2
69.0 N/mm (Vr/dhtmin)
Permissible Bearing Stress
=
139.0 N/mm
Resultant shear (Vr)
=
2
2
(0.4Fy)
(For 6063-T6 as per IS:8147)
Hence 2 nos 3.96 dia (#8) SS screws are Provided per cleat
Page 4 of 7
TRANSOME (BELOW/ABOVE SLIDING WINDOW) FIXING
Transome Reactions at ends
Due to Wind (Rx)
Due to Dead Load (Ry)
=
=
2.651 kN
0.204 kN
(Refer Window transome calc)(GL-14)
(Refer Window transome calc)(GL-14)
b
d1
Leg-1
edy
d2
sy
Leg-2
edy
sx
edx
Leg-1
e1
edx
Transome Fixing
Typical Cleat
Fixing Cleat
Thickness of Profile (t)
Width of Profile (b)
Depth of Profile leg (d1)
Depth of Profile leg (d2)
eccentricity (e1)
eccentricity (e2)
=
=
=
=
=
=
2.00 mm
159.00 mm
25.00 mm
45.00 mm
10.50 mm
0.00 mm
Screw Spacing (sy)
Screw Spacing (sx)
Edge distance (edx)
Edge distance (edy)
Edge distance (edx)
=
=
=
=
=
20.00 mm
109.00 mm
45.00 mm
12.50 mm
25.00 mm
Check for Leg-1
No.of Legs (n1)
=
2.00
Shear Stress (fs1)
=
2
Shear Stress (fs2)
=
Permissible Shear Stress (fsp)
Interaction Eq:((fs1 +fs2)/fsp)
=
4.17 N/mm (Rx/(n1bt))
2
0.64 N/mm (Ry/(bt))
2
51.00 N/mm (For 6063-T6 as per IS:8147)
=
0.09
Bending Moment (M1)
=
Max Bending stress (fb1)
Bending Moment (M2)
=
=
Max Bending stress (fb2)
=
Permisisble Bending Stress (fbp)
=
<
1.00 (OK)
2.78E+04 N-mm (Rx x e1)
2
2
1.65 N/mm (6M1/n1tb )
2.14E+03 N-mm (Ry x e1)
2
2
20.21 N/mm (6M2/ bt )
2
96.00 N/mm
Page 5 of 7
(For 6063-T6 as per IS:8147)
Interaction Eq:((fb1 +fb2)/fbp)
=
Check for Leg-2
Bending Moment (M3)
Bending Moment (M4)
=
=
Base Pressure Induced (p)
Max Projection (a)
Bending Moment Induced (M5)
=
=
=
Bending Stress induced
=
Permisisble Bending Stress (fbp)
=
0.23
<
1.00 (OK)
2.78E+04 N-mm (Rx x e1)
2.14E+03 N-mm (Ry x e1)
2
2
2
0.19 N/mm (6M3/d2b )+(6M4/bd2 )
12.50 mm
2
14.59 N-mm (pa /2)
2
2
21.88 N/mm (6M5/t )
2
96.00 N/mm (For 6063-T6 as per IS:8147)
Since All Stress are within Limits, Cleat Profile is OK
Check For Screws (Fixing on Mullion)
Screw Material
=
Stainless Steel Grade A4/70
2
Yeild Strength (Fy)
=
450 N/mm
No. of screw (ns)
Dia of screws (ds)
=
=
Net section area (as)
Spacing of screw (sv)
Spacing of screw (sh)
=
=
=
20.00 mm
109.00 mm
Factor of safety (Fs)
=
1.50
Vertical shear per screw (Vsv)
=
Horizontal shear per screw (Vsh) =
Shear per screw due to Moment :(Vse) =
4.00
3.96 mm
2
9.23 mm
(#8)
(0.75 x π x ds2/4)
(Ry/ns)
(Rx/ns)
0.05 kN
0.66 kN
0.00 kN
Resultant shear (Vr)
=
Factored Shear stress
=
(Vsv2+(Vsh + Vse)2)0.5
0.66 kN
2
107.99 N/mm (FsVr/as)
Permissible Shear stress
=
180.00 N/mm
Tension Per Screw (T)
=
Factored Tensile stress
=
(M3/2sx + M4/2sy)
0.18 kN
2
29.45 N/mm (FsT/as)
Permissible Tensile stress
=
270.00 N/mm
Min Thickness (tmin)
Dia of Hole (dh)
=
=
Bearing Stress
=
2.00 mm
(mullion web)
5.46 mm
2
60.9 N/mm (Vr/dhtmin)
Permissible Bearing Stress
=
139.0 N/mm
2
2
2
Hence 4 nos 3.96 dia (#8) SS screws are Provided
Page 6 of 7
(0.4Fy)
(0.6Fy)
(For 6063-T6 as per IS:8147)
Page 7 of 7