Dear colleagues
I am designing a machine foundation for the rotary machine (HVAC outdoor unit) . The foundation will be executed on the top roof slab. The top roof slab is a concrete ribbed slab with stiff beams. So, there is no embedment impedance
I have assumed modulus of subgrade for the...
Dear sirs,
I am starting up the design of a new project (an open artificial water lake) (the cad file is attached). Since it is the first time to design such a project. I have many inquiries in my mind.
1. Shall I design it as a pool or there is another perception?
2. Should I use reinforcement...
Recently I found in a warehouse (steel structure, truss roof system, span =40 m, length = 50 m) that columns were damaged due to corrosion to a significant level. in this it seems the base plate is extensively corroded at footing with gusset plates and stiffeners totally rusted. ( please, take...
According to (EC2 – Clause 6.4.5) punching shear reinforcement can be used to resist the two-way shear in FLAT SLABS around the columns.
But I am wondering to know if the shear reinforcement can be used in RAFT FOUNDATION SLAB (Uniform thickness).
Note: the capture attached shows how does the...
Dear Colleagues
According to EC8 – Clause (4.3.3.5.1 ) , The combination of the horizontal components of the seismic action (Ex & Ey ) shall be applied when the dynamic analysis is used.
May I know if this condition shall be taken in consideration in (Static Method Analysis – Equivalent Lateral...
Dear Colleagues
I would like to ask if there is a clear statements or recommendations in (Eurocode 8 ) about ignoring plan and elevation irregularity assessment in low seismicity zones (DCL) .
Note : If possible the response attached with reference .
Any help will be highly appreciated
Best,
Dear colleagues,
I am wondering to know. How to design concrete post fixed at edge of cantilevers (the cantilever span about 8.50 m). These posts will be exposed to tension force only as shown in the attached captures. Knowing that the building is an airport lounge (concrete structure)
My...
Dear colleagues
Could someone point me to how the punching shear verification can be done for the indicated walls in the attached capture? The intended punching verification at the raft foundation level.
Or in this case the punching shear verification can be ignored?
Knowing that:
- I am...
Hi all
The attached capture is shown my structure which have a basement under the part of it and the raft foundation slab (lower foundation) is considered as foundation system for this part while as the other part of structure is supported by raft foundation (upper foundation) in different...
Hello all
Could someone provide me any technical reference which showing the maximum length of concrete structure that can considered without expansion joints?
Thanks inadvance.
Refaat
Hi all
I have some a challenges to select the suitable structural system for administration building with large spans.
Could someone help me to suggest a suitable structural system since we have in the ground floor a hall room (12 m width variable , about 25 m length variable)( please , take a...
Dear Collogues
Please , Could someone clarify to me this statement (PASS - This is within half of one percent of the applied axial load therefore say OK ) in calculation note of (Tedds software ) for RC wall design exposed to axial force and end moment about minor axis . And if related to...
Dear Collogues
I would like to verify the total drift of elevated water tank (please take a look to the attached capture) according to code Euro code.
Could someone help me to answer the following inquires?
1. Which load combination of Euro code should be used? Knowing that I have only two...
Dear Colleagues
Greetings
Could someone help me to get any specifications or technical reference for the procedures to assessment and rehabilitation any concrete structure buildings (Especially Residential Buildings) after disasters for instance the wars or earthquakes?
Any help will be...
Dear Colleagues
Greetings
I am using Euro code (EC2) to calculate long term deflection for slabs and beams according to clause (7.4.3) (Simplified method).
Please, could someone provide me spreadsheet (Excel sheet) to do deflection calculation?
Any help will be highly appreciated.
With Best...
Dear Colleague
Could someone help me to know a simple approach, how does the elastic rotations of foundation (Rx & RY and RZ) calculate?. I have only the vertical subgrade reaction (Ks ) (I have gotten this value based on this approach : Ks = 40(SF)qa : KN/m3 (Joseph E. Bowels book) .
And am...
