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Rafter

The document details the design checks for a rafter, including moment, shear, and tension capacities. The moment carrying capacity is not safe, while the shear and tension capacities are safe. The deflection check is acceptable, with actual deflection within allowable limits.

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MAVIC MINI AERIAL ADVENTURER
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12 views2 pages

Rafter

The document details the design checks for a rafter, including moment, shear, and tension capacities. The moment carrying capacity is not safe, while the shear and tension capacities are safe. The deflection check is acceptable, with actual deflection within allowable limits.

Uploaded by

MAVIC MINI AERIAL ADVENTURER
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

2.

DESIGN OF RAFTER
A. Check for Moment Carrying Capacity
Member UB 406X178X74
Partial Safety Factor = 1.1
Yield Stress of steel = 250 N/mm2
βb = 1 Plastic
Design Moment Carrying Capacity = 300681818.2 N
Mdz = 300.68 KN.m
Mdy = 39.09 KN.m
Actual Moment Carrying Capacity My= 1.57 KN.m
Actual Moment Carrying Capacity Mz= 395.327 KN.m
NOT SAFE

B. Check for Shear Carrying Capacity


Partial Safety Factor = 1.1
Yield Stress of steel = 250 N/mm2
Depth of the Section = 412.8 mm
Thickness of the Web = 9.5 mm
Shear Area = 3921.6 mm2
Shear Carrying Capacity = 514576.549 N
514.576549 KN
Actual Shear Carrying Capacity = 155.001 KN
SAFE

C. Check for Tension Capacity


Partial Safety Factor = 1.1
Yield Stress of steel = 250 N/mm2
Gross Cross Section = 94.51 cm2
Tension Capacity = 2147954.545 N
2147.95 KN
Actual Tension Capacity = 86.329 KN
SAFE
D.Utilization ratio
Factored Applied Force N= 86.329 KN
Design strength in Tension Nd= 2147.95 KN
n N/Nd= 0.04019126 < 0.2
Mndz=Mdz
Design Reducedd Flexural Strength Mdz= 300.6818182 KN.m
Design Reducedd Flexural Strength Mdy= 39.09 KN.m
α1 = 1
α2 = 2
Ratio = 1.768881473 < 1
NOT OK

E. Deflection
Span of the member = 5000 mm
Allowable Deflection = 27.78 mm
Actual Deflection = 23.212 mm
Check OK

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