If ETAB and SAP2000 is produced by same company why 2 different softwares? whay don't they emerged into one. The reason I am asking is can I also use ETAB to design a medium span portal frame? What would be the difference in output? I was shown the steel design output is very brief - just a...
What is the normal or range of building expansion joint spacing in Middle East espcially in Saudi Arabia? Is it governed by the building code? I was told that the building expansion joints are much closer than in the normal practice found in other parts of the work due to extreme variation in...
I have a 3 ft deep steel box beam slotted into a steel tubular column. How is the load from the beam being transfer to the column? Is the load being carried by the side plates of the box beam or the bottom flange to the pipe column?
Some recommended a half round pipe at the slot to reduce the...
Appreciate views,information and opinions on immature concrete subject to lateral loads.
The contractor has to install steel tubular piles for construction of wharf into rock sockets. The concrete specfied is 40 MPa at 28 days strength. The contract calls for the piles to be temporary braced...
In a project, it is specficed that all 1200mm dia marine steel tubular piles in 18m deep of water had to be temporary braced and can only be released before installation of the steel roadway frames. All the steel piles are directly socketed into rock and grouted with 40 MPa concrete. There is no...
Just a question on the recommended berthing direction for jetty. I see most of the berthing jetties are lined parallel to the shoreline. Suppose, a berthing jetty is to be built on the east side of a small island and the wind is blow from north to south for 6 months and then reverse for the...
I have a RAIL girder sitting on top of a steel stump/pedestral which can be a closed or built up I section. This steep stump or pedestral is subjected to longitudinal, transverse, compression forces, in plane, out plane and torsional bending due to a moving and lifting machine on top of the Rail...
Retaining structures like culvert wing walls and bridge winged abutments are restrained at the base and side which reduce the movement of soil. Therefore should the coefficient of soil presure used be Ko instead of Ka?
Also is there any publication or research paper which relates the...
Hi,
Appreciate if anyone has knowledge or where information on concrete corrosion in partial saturated condition. See, I have a retaining wall subjected to sea tides. When the tide is low, the outside wall will be dried. But it is protected with 2 layers of epoxy coatings. Unfortunately, the...
In ASCE Penstock design of pipe saddle, a circumferetial welded ring with support is required.But when look into any pipe supplier or manufacturer's booklet, this cirumferetial ring is not required. The pipeline sits on top of the concrete pad. Where can I get references for the design of this 2...
What is the difference in using structural programs to model lateral piles subject to lateral loads using spring stiffness in the structural programs and specific pile programs like LPILE, MPILE and PIGLET? Why the need to invest in another software like LPILE or PIGLET when one can use a...
am design a vertical shotcrete wall 8m or 26ft deep. For the first 2m (6 ft), I encounter soil and below weathered rock to fairly sound rock at 8m.
I am just confused over the followings.
1. Difference between soil nails and rock bolts as I am using SNAIL program procedures. Both have bearing...
I understand we use ko (presure at rest) values if the wall is rigid.
I have a solder piles (king piles) propped at both ends. As the piles is not stiff, the soil behind will move and hence ka value is adopted. But later pile will not deflect. In this case, should I used ko? If the pile is...
Hi,
This is more of a construction question on the installation of the soil nail.
Many references call out for the shotcreting of the soil nail wall to be carried out in 2 stages. The first stage is shotcrete until the base plate. Then snug tight the nail bolt and second stage is another...
We have piles supporting a bridge abutment. The batter slope for the abutment is 1V to 1H and FOS = 1.4. merely based on Slope Stability analysis excluding piles. In real life situations, will those bridge abutment piles help to increase the slope stability. Rather to implement other forms of...
Can anyone help me on this question.
Based on monitoring & observation, it was found that when a pre-tensioned beam upon releasing the strands, it will hog due to uneven prestessing force. It will continue to hog upwards due to the sustain stressing acting upon it over a period of time over 60...
In the PIGLET program, it calls for Modulus of equivalent solid piles (axial) & (lateral).
Q. Is what is this equivalent solid piles and how to calculate?
Q. Is there a website to download the PIGLET manual or how to obtain a copy.
Thanks
