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Hello everyone, We are designing 10 stories building with three basement floors and we notice that the static base shear at the foundation level is less than the static base shear at ground floor level (directly above the basement floors). My question is as follows : In order to perform a...

Thank you very much for your valuable response. my concerns are 1-The beam compressive strength is very low and it does not achieve the Durability requirements 2- We will replace the existing slab with a new slab and we will connect the new slab bars to the existing beam using chemical...

I totally agree with you if we have a small building we can design the beam manually or even use computer programs to give you the design member force and then design the member using an excel sheet. But when we have a complex structure like a mall, the number of beams is massively huge, it...

Hi Everyone, my question seems simple, but I get confused when I found the consultant offices design the concrete beam in a different manner and the resultant is completely different. Here are the most common ways that I notice : consultant type 1 1- After applying the building load on the...

Hi, We are renovating an existing building, the structural system consists of a solid slab supported by a concrete beam and bearing stone wall (as shown in the sketch) and the foundation type is stone strip footing. the client wants to avoid any demolishing to the existing wall during...

why do you recommend using sap instead of safe software ?, do you think there is a difference in resultant?

I totally agree with you if we will use pile, but in our case, we will use raft only

I am trying to reduce the raft thickness, but we believe it will not reduce much. I have already tried to use option 4 but we find that the soil stress getting very high and far exceeds the allowable bearing capacity. The pit area is a big area. Yes, you are right.

Hi, I am trying to model elevator pits in Raft in CSI SAFE. the raft foundation thickness is 4000 mm and the PIT Bottom slab is depressed by 4500mm below the Top of RAFT. by that way, we create a raft with a thickness of 8500 mm at the edge of the elevator pit my question is, which of the...

thank you all for your support I found a diagram illustrating the Acceptable accelerations according to ISO 10137:2008 using the building frequency (refer to attached ). also, Taranath book give some guide to calculate the acceleration (refer to attached )...

Hi, we are designing a 60 story building located in a low seismic zone and our client refused to perform a wind tunnel test we failed to convince our client and his team and the client team believes the wind force obtain from code IBC/ASCE7-10 can be higher than the wind tunnel test. my...

Hi HTURKAK, please refer to the attached sketch all units in millimetres you are right but the new structure will be on the pile foundation while the existing tunnel is on the raft foundation. so any movement between the two structure will cause water leakage. well the waterproofing is not...

Thank you @JedClampett. Regarding to your response of Q1 , if we extend the expansion joint into the wall , this joint can not resist the water pressure ( 22 feet under the water) and cause water leakage at the end , so I was thinking if I cancel this joint at the wall only . For Q2 , my...

Hi All, I am designing a two-story parking structure under the groundwater level with dimensions 600 feet x 600feet, the whole building is submerged under the water moreover, we want to connect the parking building to an existing tunnel. I have three questions: 1- Can we provide expansion...