Welding of a circular pipe to a flat plate where the pipe is in pure bending. I've seen the weld stress calculated as
M/Sw
M=moment
Sw=circular property of the weld
Is this the Section properties of that of a circular ring, with the effective throat being the thickness of the ring?
Contacted by an Italian firm to oversee their design. They want to use European steel in the US. We will have to ensure the structure meets our codes. Is this permitted? Any one come across this situation before?
I am curious as to the relationship of drag coefficient and speed for a vehicle. I calculated an object moveing at 55mph having a Reynolds of 3.2*10^6. I think this puts it beyong the transition where drag coefficient drops significantly. However at 10mph it is before this transition.
But I've...
I am interested in this as we are doing work on an existing 1914 building, The NYS building code for existing buildings merely states that the structure shall be capable of supporting loads at the time or era. Unless you make modifications that increase the stresses by more than 5%. Something...
Not that this is a specific design. I don't get into concrete design too much but some. When designing concrete walls under flexure, how would one design and detail shear reinforcing. ACI 318 ch.14 references you ch. 11 which discusses stirrups, bent bars. Other than thickening the wall?
I've been the Project Managing Engineer on many projects, this one, a small job, a floor infill, about 21'x 50. The proposed floor infill I designed was W12x22 @ 36" o.c. on 9/16" form deck, with 3.5" total slab. The beams frame between two 12" cmu walls that are two stories in height. I have...
Analyzing roof of building constructed in 1966 for mechanical unit addition, have plans with sizes not grade, I thought it was in the 1950's. But was it used widely enough in 1966. I have a sixth addition AISC Manual (1963) it lists both 33ksi and 36ksi. I may end up using 33 ksi to be...
I apologize if this is a redundant post, but I need to specify the proper electrode for welding a 3/4" diameter stainless steel rod (304) to a schedule 40 steel pipe. This will be done in the field and is part of a life line attachment.
The contractor is proposing to use "Agilia" for some round columns in a smooth form. The reason is to reduce costs for finishing as these will be exposed. I've never specified this concrete and the submittal does not give the design mix because it is a trade marked product. Only gives the...
This involves an underwater viewing glass at a zoo currently under renovation. The viewing glass will be about 8ft high and other than hydro static pressure, we have concerns with impact from the sea lions. We are not designing this glass but the manufacturer has submitted their calculations...
Does anyone have experience with speed tile floors, mostly constructed at the turn of the century. We are working on renovating a buildign for a school, the underside of the floor is speed tile. There is a 2" topping with embedded nailers. There are some concerns as 1 1/2" of floor leveler...
I am performing a load rating of an existing bascule bridge. We are using the 16th Ed. AASHTO. Table 3.22.1A Lists the load combinations for groups I to X. I am under the impression that each group applies to certain types of bridge structure but I can not verify what groups I should be...
