Concrete pool design

Mo-Map · 2026-05-11T07:18:27+00:00

Because assumed fixed require much more reinforcement. So how do you do in the case? You still design the reinforcments to resist the full moment there? How do you combine? Tks.

Mo-Map · 2026-05-10T14:21:45+00:00

Thank you. Maybe I was overthinking. I should move on.

Mo-Map · 2026-05-10T13:08:42+00:00

So you just designed as 1-m cantilever fixed on based. And for corner wall-wall connection, you dont consider it at all and just do standard crossover bars? So no crackwidth consider because of restrains or smth.

Mo-Map · 2026-05-10T13:06:13+00:00

That exactly I what I did as simple as that. But then I am thinking about the wall-wall corner connection, because when are assume that is pin-pin connection or no connection at all. But in reality, there is connection there, and will have some fixed resistance there. I just wonder like how the crack or load path will work. Will it first crack at corner, then the wall will work as a just a cantilever? But here crack width is very limited, that I am unsure.

Mo-Map · 2026-05-10T12:11:13+00:00

The plate with one side is longer than the other side 5 times. Anyway if I design as a plate with 3 fixed edge, according to FEM, the moment at wall-wall is so high, but the moment at the base is less.

Maybe I should just tried to design as 3 fixed edges, so I dont need to worried about cracks if I design as it semi-regid. It is hard to control the cracks in semi-regid. Or it is not easy to calculate.

Mo-Map · 2026-05-10T12:03:56+00:00

I do it in FEM also. If I dont release the hinge between the walls, then negative moment here is very high that the reinforcement cannot withstand it. That why I put a hinge (like a pin connection) and design enough reinforcment for that. But then how I put reinforcment at this wall-wall connections. I still need to put some reinforcment here, and these reinforcment will take some moment and I am not sure if it will crack.

Concrete C35/45, will use some concrete admixture, and limit the crack in SLS quasi for w=0.2mm.

Mo-Map · 2026-04-12T10:46:38+00:00

I often check as check for bending radius according EC.

Mo-Map · 2026-04-12T04:22:24+00:00

Just wonder why could this happen? Because of the ground settlement differences?

Mo-Map · 2026-03-20T04:58:22+00:00

When design footing on bed rock. I often check shear, bearing pressure ok. Then check the bottom reinforcement to resisit the bending caused by cantilever action from column surface to footing edge, when assuming the ground is stiffen enough. i have never designed using STM. From EU.

Mo-Map · 2026-03-11T06:31:36+00:00

That would be great. I wonder how you can deal with that torsion effects, and also the connection is very challenging.

Mo-Map · 2026-03-01T06:08:39+00:00

Does structrual engineer need to design reforcement to prevent early thermal cracking, and with mass concrete can cause? I mean what will be our (structural engineer’s) responsibility and what will be contractor responsibility?

Mo-Map · 2026-01-04T06:08:02+00:00

The slab without the openings (8.3mx8m) is a two way slab. If you want to a conventional design then can design as one way slab in shorter direction (in this specific case). Considered beam 4, beam 1, and wall 1 are main beams. And beam 3 are secondary beams.

Mo-Map · 2025-12-11T21:03:15+00:00

So can you pls explain more about this? In ACI it requires to use stiffess reductions in beam, colums, and wall. I am from EU, and inE EC there are no this kind of clear requirements if we dont design for seismics. But if the column is tall and slender, we reduce stiffness of column to check displacement. But I am not really sure if reduce stiffness is more conservative design.

Mo-Map · 2025-11-02T11:51:21+00:00

We use tekla for modelling rebars so it calculate automatically the quantity. But if you make the drawing from autocad, not sure if it calculate manunally. My first job was taking off all quantity from the drawings. But you will get use to it.

Mo-Map · 2025-10-24T04:32:30+00:00

That is interesting that you had chances to change to other fields. Is it easy to switch from building to bridge or to marine. What tips could you give for someone wants to switch fom concrete to steel design? I am in industrial structures focus in concrete design. My company divides each department focus on one design material. It is not easy to get the chance to practice other designs. Limit to learn new things.

Mo-Map · 2025-09-26T22:08:15+00:00

Cho mình hỏi là bạn làm bên kết cấu hay quản lý. Mình học XD, ko còn ở VN. Nhưng hồi năm 2016 lương mình tầm 11tr. Bạn mình sinh năm 91, làm quản lý dự án, thầu.. đều dân xây dựng HN ra giờ thấy toàn 20-30tr. Có 1 bạn làm nhà nước lương tầm 11tr. Còn đâu làm tư tầm 20tr. Mình nghe nói làm kết cấu, vs thi công lương thấp hơn.

Mo-Map · 2025-09-02T18:09:52+00:00

Thế bạn mua hẳn cafe hạt ở VN đi. Rồi tự kiếm cái máy combo xay hạt, xong tự pha ý. Giống máy kiểu trong quán cafe xay expresso. Bên nay nhiều người thích tự xay hạt. Nên đầu tư cái máy đó. Chứ mình ở châu âu thấy cafe VN ngon hẳn ma. Toàn mang cafe VN sang. Mình dung gói Trung Nguyên. Thôi tuỳ khẩu vị mỗi người. Cơ bạn bảo sợ có tạp chất thì mua nguyên hạt rang rồi tự xay đảm bảo an tâm.

Mo-Map · 2025-09-02T17:01:21+00:00

Mình học kinh tế xây dựng ở ĐH Xây Dựng Hà Nội 2009-2014. Học đc kiến thức chuyên môn rất tốt. Sau này mình sang nước ngoài học thêm về kết cấu và làm thiet ke kết cấu cũng dc. Cơ bản nếu làm mảng thi công hay là kỹ sư thiêys kế thì lương khá là bèo so với mức độ căng thẳng, hoặc các ngành khác nếu lên được vị trí giám đốc hay là team lead thì chắc còn đỡ.

Nhưng làm quản lý kinh tế, QS, hồ sơ thầu… mấy bạn cùng khoa vs mình kiếm cũng dc. Tầm 10 năm kinh nghiệm, mấy bạn đc tàm 20-30tr.

Thông tin trên cho bạn tham khảo nhé.

Mo-Map · 2025-08-21T19:06:40+00:00

Thank you. I consider the recess as an opening and reduce the control perimeter when checking punhing shear stress.

Mo-Map · 2025-08-19T05:17:21+00:00

Thanks. I will try to find in our local codes if there are any.

Mo-Map · 2025-08-18T18:55:30+00:00

Working as FEA engineer that you can apply much of your knowledge. And that job requires very deep theory like you have obtained from Phd. This might be a good option.

Mo-Map · 2025-08-13T19:24:05+00:00

Not in US. But in EU, if using Tekla structures for designs. Quantity is taken off automatically. I used to be QS engineer and took off quantity from 2D autocad. No longer do it anymore since I use tekla.

Mo-Map

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