Hello,
I have a 300mm thick flat slab (without drop panels) which is to contain a series of plastic pipes for cooling the floor. The pipes are 25mm diameter and are spaced at 100mm centers. They will be situated in the center of the slab (suspended from the top reinforcement I expect), so will...
Hello,
I have a large span storage warehouse to design - 60m span, height to eaves is 9m. It is lightweight construction - sandwich panel sheeting on purlins with minimal services. The roof is only accessed for maintenance (0.6 Kn/m2 live load).
A colleague has suggested that checking the roof...
I have a 3 story concrete framed building with a two level basement to design. The building design meets all of the requirements of 1629.8 to enable a static analysis to be carried out, however in the basement B1 structure I have a stiffness irregularity as the floor structure is partly open i.e...
Does anyone have any experience with this?
We have a client with a processing facility in the Middle East. A couple of the smaller ancillary buildings have experienced some significant settlement recently (> 100mm). The cause is not yet known and the original soil investigation report is...
Hello,
Does anyone know of a requirement within the AWS Structural Welding Code that states that all on-site welding should be tested?
We are requesting the contractor to carry out NDT's on a series of full strength butt welds that are being done on-site. He is trying to claim a variation for...
I have a 6m deep single level basement to design for a three story concrete framed building. basement footprint is 11,000 m2. The ground is sand, water table is at approx 4m.
The wall will be built on the plot boundary so no external excavation or ground tie backs will be possible. For the...
I cannot find the tata blue book for steel section capacities online anymore. There doesn't appear to be anything mentioned on Tata's website about it either. Does anyone know if it has been removed or not?
I have a free standing RC wall, the strip footing for which is 500mm thick. It is a boundary wall around a facility so resisting only wind loads or a vehicle impact load.
if I follow the code for minimum reinforcement in the foundation (0.35%) I need a lot more steel than is required for...
Clause 10629.4.2 states that "the value of Na used to determine Ca in seismic zone 4 need not exceed 1.1 for structures complying with the following conditions (1 to 3)"
If I don't know the seismic source type or the distance to the seismic source, can I use this figure of 1.1 for the Nv factor...
I have a manufacturing facility to design in Kabul and am having trouble trying to determine what basic wind speed to design the buildings for. US design codes are applicable and ASCE 7-10 for the loadings, which of course only covers wind speeds in the states.
Have searched online but no...
I have received a design from a contractor to review which is for a single storey steel framed warehouse (portal framed building).
He has used the allowable stress design load combinations (IBC section 1605.3.1) for the analysis and member designs. Generally for strength checks I always use the...
Hello,
Does anyone know of a quick way of determining Equivalent US steel sections for British sections?
I have designed some steel framing for a project in the middle east and have specified BS sections. The contractor wants to use US sections as they are more readily available. I therefore...
Can anyone offer any ideas as to how this failure has occurred in a water tank in the attached photos?
The tank construction consists of a GRP wall, with steel framing around the outside, presumably to provide lateral restraint to the tank. The framing sits on RC beams which are on a raft...
I am currently tasked with doing design checks on an existing vacant shell building, which is to be fit out as a retail store. The single storey building is roughly 5 months old but there are no available structural as-built or design drawings available.
We have prepared a spec for some...
Does anyone know of a free available program for analysing simple 2D beams / frames? Preferably one with a graphical interface and not just an excel spreadsheet. I'm sure I've come accross one in the past but cannot find any free ones on the net at the moment.
Would be grateful for any help.
Thanks
Hello,
I need to create an opening in an existing concrete roof structure, which consists of 5m long 250mm thick precast hollow core slabs spanning onto precast concrete beams.
obviously we cannot cut through the pre-stressed slabs, so we are proposing to cut and remove the full slab units (3...
Hello all, hoping someone can provide some advice with an issue I have.
The contractor cast the column in question, removed the formwork after only 8 hours and in a couple of areas there is some severe honeycombing - reinforcement exposed and voids through the section (see attached pics).
My...
Hello,
Can anyone recommend a good introductory book or lecture paper on dynamics in structures that deals with vibration etc. One that is preferably written with metric units...?
Thanks in advance
Can anyone give me a formula (or method) for calculating the axial force in a steel member for a known temperature variation in degree celcius?
thanks in advance
.. who have done the Municipality exam for G+4 or unlimited storey height?
I'm interested to know what kind of questions to expect, particularly for the unlimited exam. Would appreciate any advice, as I cannot seem to source anything online.
Thanks in advance
