Applying reactions at each of the four corners as a concentrated load is not realistic; it creates an infinite shear stress because the reaction is applied over a zero area. Maybe you should try moving the reactions in at least half the depth of slab, and assume the area of each support to be...
I would prefer a steel post supporting the steel beam, but it can be done either way.
The contractor might prefer a timber beam which he can install when he is ready.
Deflection limits are specified in the code...usually L/360 for live load and L/240 for total load.
Tomfh stated: The whole thing is one footing. Design as single rectangular footing, including top and bottom reo as needed, including top reo due to the fact the footing will span between the columns and resist the upward load of the soil.
That can certainly be done, but I don't believe it is...
It might help if you told us the line load under the masonry wall.
Assuming a line load of w kN/m, the required width of the strip footing is w/150 in order to equalize the soil pressure on all footings. The strip footing will act more or less like a one way double cantilever, but you...
What is the distance from top of footings to ground floor? Does the wall load extend over the square footings? Have you considered omitting the strip footing, increasing each square footing to, say 2.5m square and relying on the masonry wall to act as a beam, or adding a slim grade beam...
If the trusses are made whole, it is more likely that the beam will be supported by the 10 or 11 bottom chords, because the trusses spanning 28' are stiffer than the beam spanning 21'. So the trusses will likely pick up the ceiling load via the beam which is a continuous member spanning only...
I agree that the existing trusses haves been seriously compromised by cutting the bottom chords to accommodate a 21' long beam. There may be ten or eleven trusses involved as truss spacing is 24 inches.
Tension capacity in the bottom chords must be restored by providing tension straps at...
BA - I don't disagree, but who pays for the repair is going to be someone else's battle to sort out.
No, it should be sorted out now. The cost of repair includes the cost of engineering which, at the moment, is in some doubt. Preventing morons from cutting structural members without asking...
Anchor the pipe in the footing. The cost is minimal.
Bond between smooth pipe and concrete is not reliable. Reinforcement is deformed, providing good bond with concrete.
Shear deformation is normally ignored. Take the normal cantilever deflection plus theta*Lc where theta is the backspan rotation due to the cantilever moment and Lc is the length of cantilever.
Google "Beam Diagrams and Formulas" and you will find several load combinations. The sketch above...
The change to a circular load should require a separate thread. Tacking it onto this thread is confusing.
The OP:
I have another problem that I am going to tackle and would like your help again. This challenge is to develop beam deflection formulas for a semicircular load applied to a simply...
You don't dimension the vertical column, which carries the greatest moment. And you don't show the thickness of the entire shape. But most of all, the building code does not permit plain concrete to be used in a structure such as this.
I suggest you omit the jog (saves form work) and...
I believe the bent anchor has merit. It's true there is a lateral force at the bend point, but the lower end has much better tensile resistance than either a L or J anchor.
