Aluminum deflection with 1,500 lb's of force

AI Thread Summary
The discussion centers on reinforcing a flybridge deck on a trawler, which has a 4-inch crown and spans 114 inches between supports. The user seeks to calculate the necessary thickness of a 6061-T4 aluminum bar to withstand a 1,500-pound load at the center while ensuring safety. There is a strong recommendation for consulting a licensed structural engineer, emphasizing that life safety should not rely on online advice. The user acknowledges their lack of engineering expertise and expresses concern about proper sizing of the aluminum trusses. The conversation highlights the importance of professional guidance in structural design for safety-critical applications.
Capt
Messages
2
Reaction score
0
I am reinforcing a floor that has a 4" crown at the center and supported between 114" ends. The reinforcement material will be a rectangle bar of 6061-T4 Al,35 Ksi, length between ends 114", 1/2" width. How do I calculate the thickness to prevent bending up to 1,500 lb's forced applied at the center.
Thank you,
Capt
 
Engineering news on Phys.org
Capt said:
I am reinforcing a floor that has a 4" crown at the center and supported between 114" ends. The reinforcement material will be a rectangle bar of 6061-T4 Al,35 Ksi, length between ends 114", 1/2" width. How do I calculate the thickness to prevent bending up to 1,500 lb's forced applied at the center.
Thank you,
Capt

Welcome to the PF.

What is the application? What building codes apply?
 
The application is to reinforce the flybridge deck on my trawler. No building codes apply.
Upon the upper deck I will have 4,6 people at a single time (thus the weight load) and must support the weight with a safety factor. The two walls that support the deck are 114" apart. I am not an engineer and don't know how to size the aluminum trusses I will fabricate and install. The 6061-T4 aluminum call out is only because I'm use to fabricating that grade,other grades may be more applicable..
Flybridge decks have a crown at the center to allow the sea water to roll off during heavy weather. In this case mine is 4' at the center.
Thank you for your review.
Capt
 
Last edited:
Capt said:
The application is to reinforce the flybridge deck on my trawler. No building codes apply.
Upon the upper deck I will have 4,6 people at a single time (thus the weight load) and must support the weight with a safety factor. The two walls that support the deck are 114" apart. I am not an engineer and don't know how to size the aluminum trusses I will fabricate and install. The 6061-T4 aluminum call out is only because I'm use to fabricating that grade,other grades may be more applicable..
Flybridge decks have a crown at the center to allow the sea water to roll off during heavy weather. In this case mine is 4' at the center.
Thank you for your review.
Capt

Please hire a licensed structural engineer to help you with this design. Life safety is not something that can be handled via advice from an Internet forum.
 
I need some assistance with calculating hp requirements for moving a load. - The 4000lb load is resting on ball bearing rails so friction is effectively zero and will be covered by my added power contingencies. Load: 4000lbs Distance to travel: 10 meters. Time to Travel: 7.5 seconds Need to accelerate the load from a stop to a nominal speed then decelerate coming to a stop. My power delivery method will be a gearmotor driving a gear rack. - I suspect the pinion gear to be about 3-4in in...
Thread 'Turbocharging carbureted petrol 2 stroke engines'
Hi everyone, online I ve seen some images about 2 stroke carbureted turbo (motorcycle derivation engine). Now.. In the past in this forum some members spoke about turbocharging 2 stroke but not in sufficient detail. The intake and the exhaust are open at the same time and there are no valves like a 4 stroke. But if you search online you can find carbureted 2stroke turbo sled or the Am6 turbo. The question is: Is really possible turbocharge a 2 stroke carburated(NOT EFI)petrol engine and...
How did you find PF?: Via Google search Hi, I have a vessel I 3D printed to investigate single bubble rise. The vessel has a 4 mm gap separated by acrylic panels. This is essentially my viewing chamber where I can record the bubble motion. The vessel is open to atmosphere. The bubble generation mechanism is composed of a syringe pump and glass capillary tube (Internal Diameter of 0.45 mm). I connect a 1/4” air line hose from the syringe to the capillary The bubble is formed at the tip...
Back
Top