Search results for query: *

Has anyone noticed how high the 2009 IBC load values are for high exposure c or d steeply sloped roofs...???

For a 6" thick concrete slab on grade (which will have radiant coils) I am using wire mesh (2" from the top) then an layer of #4 bars at 16"o.c. each way. Recommending saw cuts after. Any recommendations to reduce further cracking........

I think it's a little outrageous that you need to design for a factor of over 3 for using diagonal wall sheathing. I don't recall seeing diagonal sheathing in buildings with aspect ratios of less than 2 having failures during seismic events.

I recently got a plan check comment for using the incorrect R factor for diagonal sheathing on a wood framed house. Am i correct in assuming I need to design for an R factor of 2. That really seems inappropriate.

By the way I found it. That thing called 'reading' really works. Section 4.3.4 of SDPWS does the trick.

That section has been dropped. I only found an analysis for perforated shear walls in the wood NDS SDPWS-2005 Table 4.3.3.4. I remember being at a SEAOC seminar and remember hearing the aspect ratios have increased, but I can't seem to find a code reference. 2010 CBC is available online. Mike...

The 2007 CBC (2006 IBC) had a table with which you would reduce the allowable shear ratio if the aspect ratio is greater than 2. Does it still exist somewhere and I couldn't find where the limitting aspect ratios are.

Houseguy is right. It eventually all comes to the damn bolt couple. So try to space out the bolts (the couple). 12" is a joke. On another point, this is no different than calcuating the strength of a guardrail post. Point load at 42" high is difficult to resist thru a bolted connection with...

I've chainsawed in steel plates (like your L-plate) and bolted (exposed and countered) to the wood to get a rigid connection for lightly loaded wood timber frames. I'd recommend getting a rigid connection at the base (more than just a simple simpson post base to help stiffen up the frame.

I have a question about the seawater they are using as a coolant. How is it being brought in? How does it cool the reactor? Does it just flood the whole reactor? Does it just turn to steam?

Regarding all these pictures and the overall damage of this earthquake to our beloved kiwi friends. First this should be a wake up call to California Building Owners. This will be our state. Liquefaction, soft story buildings, and old brick veneered buildings will be the pictures from our...

efsinc, I had a similar experience with a bowstring truss as 'oldrunner' explains. One truss deflected and the adjacent trusses were overloaded when the continuous rafters added substantial load to the adjacent trusses. We saved a hell of a lot of our clients money by adding some 2-interior...

I would like to add another question to this thread. Has anyone ever been sued for doing what the contractor prefers?

I have a driveway structure on concrete metal deck and steel beams. 6" thick concrete W3 formlok 18ga. metal deck. For reinforcing (crack/temperature/shrinkage) what is the better: Wire Mesh or rebar. concrete Contractors always seem to complain about the wire mesh. I've never understood why...

On January 1st calif. will be using the adopted 2009 IBC's. Does anyone have any experience on code changes. I know they adopted the IRC in this round for residential structures. Does this simplify any of the wind design.

Does anyone have any recommendations for engineering software. I need to do simple moment frame and braced frame calculations using mostly wood and steel. The customer support for the company I've been using is driving me crazy. Reener.

Any experience with the warmboard from contractors/installers? Especially if someone has experience with Warmboard and the alternate infloor track system (Wisbro etc...) D

Hey I recently began consulting on a project where the architect is demanding we use 1.125" thick Warmboard. Which is 1 1/8" plywd. with the PEX tubes recessed in. It is APA rated for 3/4" plywd. values. I know this product is real expensive and has many installation requirements. I'm more a...

I have a project that uses parallam floor beams, TJI floor joists and OSB floor sheathing which has been exposed to a large amount of wet weather in the SF bay area. Usually I require structrual members to be primed with a sealer if it occurs during the winter wet months, because I have had...

Woodman , CBC 2304.11.2.1 : refers to joists/girders to subgrade. The old '97 UBC had a provision for 6" clear from earth. I don't think the new codes intent is to have the interior posts higher than the exterior foundation/cripple wall. By the way I ended up going to the Building Official...