It has been my
experience that "SPECIAL JOISTS" are less expensive than KCS Joists due to the
heavier members used to build the KCS (due to the design criteria). I personally
prefer to use the KCS for all of the reasons others say they prefer
them....however, we have clients who "insist" that we use the "SPECIAL JOIST"
design for all of their SITE ADAPTED "PROTOTYPE" buildings due to the volume of
steel they are buying and the "STRINGENT" guidelines their "chosen" contractors
must follow....ie they "must" place the RTU's as indicated on the drawings...if
they don't they get the almighty "AX" from the coveted list of "approved"