Hi All,
We have been reviewing a steel building where the designer has used partial fixity to reduce the moments in the beam. Magically! the partial fixity negative moment at the ends of the beam exactly matches the positive moment at midspan and therefore the lightest possible steel section can...
Hi There,
First let me state I am a Structural Engineer so not up date on the electrical requirements for grounding. We have a warehouse building that is being built on slab on grade which has steel mesh through out the slab. The mesh comes in 5'x10' segments and is tied together with galvanised...
Good Day,
We have a client whose composite slab has been compromised by the wheel action of a forklift(8000lb loaded- approximate 3000lb on front small hard plastic wheels). The slab is 3" CFD with 1.5" cover over the deck. The deck spans 5ft onto I beams. There does not appear to be mesh in the...
Hi All,
On a recent marine piling project the depth from the water surface to the mudline was around 40ft. They used a ICE 28B vibratory hammer to set the open pipe piles(100T design load capacity). The hammer plus the 110ft 24" Diameter 1/2" thick pile sank 15ft through sand/silt under its own...
We are designing a 12 story building in etabs using a system of shear walls and one and two way concrete slabs. In most cases the walls are 50ft long until we get to the parking garage where a 30ft hole is punched through. The walls on each side of the opening are 10ft long and 12 inches thick...
