I am designing an exterior stair, so its subject to wind loads as well as seismic. For the seismic design, i am looking at Chapter 15 of ASCE 7-16 for nonbuilding structures similar to buildings. This stair isnt part of the lateral system and isnt detailed to attach to the building, so it has to...
Can someone give me some guidance on how to determine the Ip for this weld group so i can determine if it is adequate for the bending force being applied to it due to eccentricity? I have found the Center of Gravity of the weld group but am having a hard time recalling how to get the Ip. In the...
So as seen in the picture below, i have a stringer that was supposed to be connected to the wall using the 6 bolts in the bent plate (1A1) but the wrong bolts were installed that needed a spacing of 20"+ which obviously is not there. I cant get any values for the bolts that were used as the...
Anyone have experience modeling stairs in Risa3D? Was having convergence issues with this stair because of the unique hanger situation (Typ C12x20.7 stringers, C7x9.8 Flight headers, 1" dia. hanger rods)at the 4th landing, back left corner. Because of the supports it was twisting and pushing the...
I am getting feedback from the EOR saying that a MC12x14.3 flange does not have enough space to fit a 1.66" OD Pipe with a 3/16 fillet weld all around. This is unusual because this is an industry standard and the fillet weld is capable of withstanding the applied loads. The EOR is asking for...
I have a moment connection of a W beam to an HSS column. CJP weld of the flanges to the face of the column and a shear tab welded to the column and welded to the web of the beam. Capacity is not the issue but rather HSS Limitations as i have a W16x31 in one case and a W18x35 framing into a...
How am i supposed to go about determining if the weld can take these loads applied? There is the vertical shear and the horizontal axial load applied. See the attached pdf. Thanks for you help!
Does anyone know of any resources for allowable spans for a 1/4" bent plate tread riser support? These stairs have a clear span of 5'-3". I am looking at the AMP load and deflection tables for treads and riser but they only have up to 10ga thickness for the treads. Dead load is around 30psf and...
I am looking to find the shear capacity of 5/8 gyp. There is 2 layers on one side of the wall and another layer on the other side of the wall. The load applied to the wall is greater than the 250plf value found in IBC 2015 Table 2306.3(3). I am pretty sure that you cannot just multiply the 250...
Looking at the attached connection of a threaded rod to a plate. When i am checking the effective throat, what would be the "R" in this case when looking at the 5/8R and 5/16R?
I am looking at a connection where an aluminum handrail post is connected to the flange of a stringer (MC 12x14.3). The post will be welded to a plate and then the plate is bolted to the stringer with 2 3/8" stainless steel bolts. Does anyone know where i could look to find the information...
Wondering if anyone could provide some guidance/ design examples to help me out in determining if the weld is adequate for a 200lb point load at the top of the handrail.
Thanks
Need some help in determining if this connection adequate for the given loading. Its a HSS6x6x1/4 beam welded to another HSS6x6x1/4 beam. Calls for a 3/16 fillet weld around the whole member. Has a constant shear of 4.5k and a torsion of 0.365k-ft. Having a hard time determining the required...
