I have read a lot of literature talking about when arching action can be assumed. The typical directive is to be sure there is enough masonry to resist the thrust at the base of the arch (triangle) and be sure there are no control joints located NEAR the openings. OK; how close is near??? I...
I am currently analyzing the feasibility of installing a 40" diameter pipe horizontally, along an existing monosloped roof that is 160 feet long. This pipe is to be installed about 130 down from the high point of this roof that is sloped 1:12 (The roof at this point is about 10.83' lower (in...
Hello everyone -
I am currently studying for the Structural I PE exam and have a question about the required codes. It is stated that either the '97 UBC or 1999 BOCA or the SBC shall be used for this exam. Well, since our work mainly focuses in the northeast region of the U.S., the best...
I am currently trying to find out what the allowable amount (percentage) of unhydrated cement particles is acceptable in a concrete mixture. If you can help by specifying what code or reference (any American Code/Reference) specifies this allowable percentage, it would be greatly appreciated...
