You should check out ACI 304. It has a great section on mix design for underwater concrete placement as well as what to look for during placement. We have used Rheomac anti-washout admixture by Masterbuilders with great success. You should look at using a superplasticizer to get the slump you...
There are purlins bolted to the bottom flange of the beam, the roof deck is then attached to these purlins. The purlin spacing varies from 4' to 12'. I am also concerned about the roof deck pans to purlin connection which is via a beam clamp. Do you know of any load capacity information on...
I am reviewing a design that has a beam subjected to 200k-ft max moment and a 32 ft span, the designer has specified a W21x44. When I checked the beam via ASD the compressive flange would have to be braced at least every 4.7-ft to meet the flange criteria. I think the designer is just...
Hello all,
I am working on a project to renovate an existing freight elevator and am trying to use an existing beam (W8x13) to support a floor in the unused portion of the existing hoistway. The existing span is 11' and Mmax=5 k'. Does the metal deck we are planning to weld to the top flange...
