I feel like if you put any sheathing under the zip sheathing you might as well do the whole building because otherwise you get a weird bump in the wall section. I've looked into strapping the top and bottom chords of the end diaphragm back through the stairs but then you have the issue of the...
I agree this is an enclosed building for wind design. To clarify my thread title should read "open front" as defined in the SDPWS. The zip system is just a sheathing system. If you use it in shearwall construction you would provide holdowns just as you would for a WSP shearwall. Typically open...
I am working on a project that is a 3 story wood framed multi-family building. The architect wants to use Zip-R sheathing on the exterior with no wood structural panels directly attached to the studs. If you're not familiar with the product it is 7/16 wood structural panel with rigid insulation...
I found this note in design guide 22:
"As an alternative approach, the torsional effects and rotation of the beam can be calculated using a “flexural analogy.” This method converts the applied torsion into a force couple acting at the top and bottom flanges of the beam. The force at the top...
The parapet studs are braced with kicker studs, that is not shown in these details. The parapet is irrelevant to the original post though. I'm just trying to illustrate the condition at the bottom flange. I agree that floor beams would provide torsional resistance if they are a similar depth. I...
I often work on building designs in which the exterior structural steel is hidden inside a metal stud wall. This means that the cladding system consists of a continuous metal stud wall spanning vertically between each floor. The metal studs below the beam are framed into the bottom flange of a...
Lately I've been trying to dive deeper into cold-formed steel design and so I've been combing very closely through the AISI S100-12 Manual. I'm working on calculating the compressive strength of a steel stud.
Part 1: Am I correct in assuming that it is typical for load bearing steel studs with...
I've got another question to tag onto this thread. In section 7.8 it states that for parapets lu is the length of the roof upwind of the wall so obviously hd is calculated assuming a windward drift. However for projections it specifies that lu be taken as the larger of the roof lengths on either...
When calculating the drift height and width per Section 7.7.1 I'm confused by this statement:
"If this height exceeds hc, the drift width, w, shall equal 4hd2/hc and the drift height shall equal hc."
So, what value of hd is used in the equation for w? The value calculated in Figure 7.9 OR the...
Does anybody know of a way to omit the entire report footer in RISA 3D? I am using version 14.0 and I am trying to merge multiple reports together and I'd like to number all of the pages using a pdf editor.
Yes. It is possible. The company I work for works almost exclusively with HSS tube and pipe and we regularly call out notches and copes. The cope can be cut with a hand plasma torch but will be much cleaner if cut on a CNC tube laser machine.
ToadJones,
Any chance you could provide a rough drawing or schematic of your leveling plate method? I having trouble picturing what your describing in your post.
