Light gauge open web steel joists
Light gauge open web steel joists
(OP)
Greetings to all.
I am novice to the Forums and would welcome some information on application of light gauge OWSJ in seismic design.
I did R&D of a new light gauge steel joist which can be very competitive due to its structural efficiency and its automated fabrication process.
I have not yet patented my design and I wish to keep it confidential until I find a J-V partner with deep pockets to feed patent lawyers for protection.
In the meantime I wish design a building system based on my lg-owsj as the prime structural framing element for walls, floor and roofs.
I wonder if any knowledge in earthquake engineering design related to such similar building systems is available.
Many thanks in advance.
Happy Easter.
Vince
I am novice to the Forums and would welcome some information on application of light gauge OWSJ in seismic design.
I did R&D of a new light gauge steel joist which can be very competitive due to its structural efficiency and its automated fabrication process.
I have not yet patented my design and I wish to keep it confidential until I find a J-V partner with deep pockets to feed patent lawyers for protection.
In the meantime I wish design a building system based on my lg-owsj as the prime structural framing element for walls, floor and roofs.
I wonder if any knowledge in earthquake engineering design related to such similar building systems is available.
Many thanks in advance.
Happy Easter.
Vince





RE: Light gauge open web steel joists
How is the performance of your design against wind, I think that's more imperative question you shall stress at this arena.
RE: Light gauge open web steel joists
Correct. I'm interested in the seismic response/performance of building shell with OWSJ.
I have designed, fabricated and tested the joist prototypes individually for residential floor loads.
I am now considering the possibility of also using the joists as wall framing members to reduce mass in seismic construction.
I am curious to know whether there have been prior applications or studies of this sort in building systems.
Thank you for your input.
Vince
RE: Light gauge open web steel joists
RE: Light gauge open web steel joists
The photo of the attachment is of a floor joist prototype
10" x 18'.
My intention is to use them also as wall framing members.
RE: Light gauge open web steel joists
Was that you in the photo? Nice shot :)
Ok, fellows, let's start to provide pros & cons on this light weight joist.
What is the material and axial load capacity?
RE: Light gauge open web steel joists
I have not yet tested for axial loads. The design and tests were for floor joists.
UDL Single span floor design for housing construction
A653 SQ 50/1 18ga galvalume steel. Limit State Design;
Fy =50ksi; Fb=30ksi; E=29.5x10^6
DL=10psf; LL=40psf; Total factored load=72.5 psf
LL @ 16"o/c: W= 53.32 plf
Deflection allowed=Delta/1.15
Some design examples using the same sections:
12" joist self weight= 2.3 lb/ft;
L/360 span = 22'-0"; L/480 span = 20'-0";L/240 span= 24'-0"
14" joist self weight = 2.3 lb/ft
L/360 span = 24'-0"; L/480 span=23'-0"; L/240 span=27'-0"
16" joist self weight = 2.3 lb/ft
L/360 span = 27'-0"; L/480 span=25'0"; L/240=29'-0"
Thank you all.
VG
RE: Light gauge open web steel joists
I hope you have better luck than I did.
RE: Light gauge open web steel joists
many thanks for the augurs well appreciated.
I have done a comprehensive search for existing patents although I have not yet applied for a patent, I would be grateful if you could identify the existing one you mentioned.
Best regards
VG48