Recent content by steveyeung

Water table is well below the sandy soil; however, water table at the top of the rock socket...

If I want to do a 4m long rock socket (750mm diamter) below a layer (say 6m) of sandy soil, what do you think the best solution is??

DRC1, What is Teng's method? It sounds useful but I haven't heard of it......

GeoPaveTraffic, Thanks for your reply. However, I have to do preliminary design in an exam....I think it is quite difficult to bring a computer.... Do you have any better solution?

I am looking for retaining wall design (e.g bored pile wall) charts which allow me to roughly estimate the reqired I value and embedded depth for some given conditons/parameters (i.e. surcharge, angle of friction, retained height). Does anybody know whether such a design chart is available or...

I am working on a bridge project and the foundation is that: bored piles of 600mm diameter will rest on clalk which is covered a 12m thick soft made ground. A geotechnical engineer said "it would be difficult to lower (the bottom of) a reinforcement cage deep down to the pile base if the pile is...

tjhubo, Thanks for your advice. krakordian, I just have the electronic copy. I got the file from my "boss" so I don't know where it comes from....I think you are right, this book might be published in 78's because a lot of prestressing techniques mentioned in this book was developed in the...

Has anybody read “Precast Segmental Box Girder Bridge Manual”, Post-Tensioning Institute and Prestressed Concrete Institute??? I got a question about distribution of BM after a joint is formed to connect two erected spans. Refer to Fig 3.18 (b), Step 3 on page 39, it shows that all erected...

I'm going to design a very short span (of 9m 10m long) RC slab bridge carrying one carriageway and a footway with 3 piles at each end (spaced at approx 3.1m spacing). Since the bridge is very very short, local effects (such as punching shear, transverse bending moment) may be more critical than...

Does anybody know/recommend any books on this subject for bridge analysis (e.g. to determine the effective length of a tied arch bridge)?

Can anybody recommend a good reference book on this subject for bridge analysis

In checking the sliding stability at intermediate levels of a gabion wall, what is the angle of friction on the interface between two gabions/baskets? In addition, what is the unit weight of the rock fill in the preliminary design? Thanks

Thank for all ur answers!! In Hongkong, a lot of buildings constructed in the 70's and onwards are over 30-40 storeys. They are all (nearly 88.5%) in the form of shear wall-beam-slab construction. I just wonder what the flat slab is not commonly adopted. In the UK, there is a lot of flat slab...

PT?? Are the slab too thin (section modulud being too low) that tensile stress is very high??

Is flat flat suitable for a building over 30 storeys (with core/shear walls)?