Engineering Center

When designing anchors in tension at the underside of an existing concrete over metal deck diaphragm, how close can the anchors be spaced such that their individual capacities are not reduced? I am currently looking at the 2210254 KB-TZ2 1/2x3 3/4 and would like to place two anchors near each other. If I drew a 45 degree lin...

I'm trying to determine why I'm getting a required edge distance of 9-inches for the attached design. I can't attach 2 designs, but I have another design where it's allowing the 6-inch edge distance, and to my knowledge everything else is acceptable. Why is there a discrepancy here? What is driving the need for such large e...

Hilti Hit HY 270 Adhesive 22-1/2 deg. combination anchor (configuration B) seems not available in anchor selection for anchorage in multi-wythe brick

I have a baseplate with tension. I am playing with embeds to achieve a ductile failure to meet seismic criteria per ACI 318-11 Appendix D. When I change the same baseplate from 12 embed to 12 1/2 embed, it changes the steel phi factor. As far as I can tell, the embed should not change this phi factor. It should be the same not...

I was designing anchorage at top of a wall, subjected to shear along its longitudinal axis. It is a simple connection, with 3 anchors @ center of wall, spacing of 6 OC. For static design, 5/8 dia. KB-TZ2 anchors with 4 eff. embed work well (D/C = 42%). But when I switch to seismic design, I don't have the option of choosing KB...

Project requires fire barrier wall for mitigation of sprinkler requirements. I'm having trouble figuring out ho wo t comply with 706.2 of the California Building Code which requires that the wall be able to remain standing if the structure on one side collapses.

Hi there, I am looking to know would ye be able to provide me with calculations to back up that 2 x Hilti 3/8 x 5 fixings at 6 apart fixed to a L4 X 4 X 1/4 12 long plain steel angle would resist a lateral bracing force of 200N to a masonry wall. The angles are at 4' spacing at both sides of the wall. The wall is a 10'10 high...

The quiz asks about dynamic loads and your quiz does not accept snow load as a dynamic load - as a structural engineer this is an incorrect determination, as the load does change over time: Dynamic loads are those which can change while the structure is in use. These include live loads and operational loads (e.g. vehicles in a...

Hello there, Is there a way to adjust the rebar number? my rebar spacing is 9 apart with 4.5 concrete cover. However, the number of bars nor spacing options in the software does not work as you can see in the graphic. Thanks, Dylan

Can we use HST3-R instead of HST3 anchor, also can we use HSR3-R anchor for under water condition?