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Brian, Thank you for responding. 2018 IRC, applicable code in this case, allows installation of metal panel roofing over existing wood shingles; as long as the metal panels are installed according to the mfgr. The deck here is spaced 1x. Wood shingles are supposed to be installed over spaced...

In this 2018 IRC paragraph below, would an attic space be the “concealed combustible space”? R908.4 Roof recovering. Where the application of a new roof covering over wood shingle or shake roofs creates a combustible concealed space, the entire existing surface shall be covered with gypsum...

JAE . . . Not yet. Actually left a phone message. I will go farther on Monday.

In reference to open-web steel joists that frame a roof, I am searching for test data that provides information on the strength of welds following a fire event. Additionally, any other information, current or past, regarding strength of welds and/or of structural steel (joists and/or other...

Engineers . . . I have a load-bearing concrete-block industrial building built in 1935 that I have examined. The roof is framed with open-web steel bar joists; 50 foot span, 5-foot on-center spacings. A fire occurred in a machine inside the building. The direct-destructive fire damage is...

Engineers . . . I have a load-bearing concrete-block industrial building built in 1935 that I have examined. The roof is framed with open-web steel bar joists; 50 foot span, 5-foot on-center spacings. A fire occurred in a machine inside the building. The direct-destructive fire damage is...

Masonry Designers: Regarding cast-stone units over wood framing, what does 2003 IRC mean in section R703.7, page 207 when it stipulates "an additional 8 feet permitted for ends" considering the allowable height of masonry veneer being 30 feet for buildings in Seismic Design Categories A and B...

Considering using a 1x on each side of a web of a mfgr'd. roof truss for repair. The load is less than 200 pounds tension.

Wood Engineers, I need to know the design values for wood, specifically, SYP, for components that are nominally 1x. Design value tables specify 2x as being the smallest dimensional lumber having tabulated and published values, as I have seen anyway. A link to information that could assist me...

Waste Water Engineers, I am investigating a sewage flooding event in small-town Indiana. This system was reportedly built in the 60's. Is, or was there, a design criteria for rainfall, such as a 10-year/one-hour rain storm event that would have been, or is, in force then or now to determine if...

Poured-Concrete Engineers: Looking at an 8-foot high, 10-inch thick basement retaining wall that has sustained a horizontal crack for approximately 60 feet of its 123 foot length. Is it practical & feasible to remove the slab inside the wall, pour a footing, & pour a new wall to reinforce the...

Responders . . . Thank you for your assistance. I appreciate you time & the information.

Wood Truss Engineers, Normally, is there an additional dead load for non-bearing interior stud walls put in design loads for an apartment-use floor structure using metal-plated flat wood trusses from framing? I have a 40 (TC - LIVE), 15 (BC - DEAD), 5 (BC - DEAD) load compilation listed on a...

BAretired & hokie66 - Thanks for your patience & diligence. I had the right equasion, just somehow used the wrong d1.

Guys . . . so what equasion should I be using to figure for a wood truss 18 inches deep with 2x4 chords & 2x4 webs - 4 inch dimension horizontal? Obviously, I am using the wrong equasion.

Using the 1312.79 I came up with a smaller deflection, using TPI formulas, than the deflection that shows up on the individual truss print. 0.72 inches by my calc. - 1.19 inches on the print

KK . . . Thank you for responding. I am attempting to verify some deflection calculations from a plate mfgr. software program. Do you know if they reduce their I in their calculations?

I have calculated the moment of inertia of a 2x4, 18-inch deep modified metal-plated flat truss as 1312.79 from standard "equal rectangle" formula in the AISC manual. Can someone tell me where to obtain wood floor truss section properties listed? I believe this looks correct. I am not into wood...

I did not realize that there was another forum catagory that would be more applicable until someone mentioned it in my other post. No disrespect intended. But, are you authorized to monitor this site? If there is some rule against posting the same question in another catagory of the forum...

ENGINEERS: I am attempting to determine the air temperature of the interior of a plumbing/pipe chase that is enclosed by an ABS shower stall (55 F inside the stall in the living space), and by a wood stud-frame wall with only friction-fit 3-1/2 inch fiberglass batt insulation (no interior or...