Recent content by PST09

Im unsure this thread is in the correct place, so apologies if its not. We shall be designing the thrust restraint (DeadMan) for a Horizontal Directional Drill (350Ton Rig). I have limited information regarding the forces involved and was looking to see if there was anyone that could offer...

ishvaaag cheers for the response they are very usefull!!

Gents, I was just wondering your opinions/any good refrence material you know of on the friction co-efficients of some of the following: Steel - PTFE Steel - Concrete (Wet or underground) Steel - Conrrete (dry) I have had a look around the net and found a few bits but nothing conclusive...

I would also agree. if the reinforcement is at the NA then in theory this is the area in the concrete where tension & compression is equal to zero.

Does anyone know what the OBRDS acronym (possibly) stands for? It refers to Ground Fixings for an acoustic surround for a generator? I have contacted the supplier and they are none the wiser. Please see attached. Thanks in advance! PST

I dont have the 11th edition but from what i hear they have cut a few things out of it and its not as involved at the 10th edition?...might just their personal view though!

from the way the question reads it seems like the contractor is asking for the location of the fixing points for the crane thats located on the SSK? Thats what the term crane on the SSK implies to me, so maybe its an abreviation for some sort of structure or maybe its the way im interperating...

That is such a brilliant book! 10th edition should be in every engineer’s library

There is a book called 'Modern Timber Engineering' which includes some refrences to the Lamella Roof structure. http://books.google.co.uk/books?id=Y6lRAAAAMAAJ&q=lamella+roof&dq=lamella+roof&ei=9XZkSrSZNpTklATC-_3BDg Unforfunatly i dont have a copy hanging around but someone else might. If...

I assume you mean a set of 'floating' stairs where each step is fixed at one end like this:? http://www.marrettistairs.com/staircase/hanging-staircases/metal-steel/fs/sm013.jpg

http://www.mydiscounttools.com/estore/articles/conversions.html#hard Some good conversion tables on there Grade Tensile and Yield Strengths Metric English Tensile Strength Min. Yield Strength Min. Yield Strength Value Value...

Asbestos is nasty stuff. It sounds like your essentially covering up the problem with fill. I'm assuming you’re going to have a substantial depth of fill but it can still leach into watercourses etc and have massive environmental impacts. Do you have control measures in place for this event...

If its a british beam and standard i may be able to help.... AISC has Design Guide 15, which is a reference for historic shapes and specifications. This guide includes information on many shapes that predated the AISC manuals. This seems to be a free search engine for section properties...

Thinking about the problem I would tend to agree with your hypothesis that there may be additional moments that you have not modelled. Would having a slightly unsymmetrical strut not mean that the beam properties (I, R, Z etc) would be slightly different for unsymmetrical struts? Your 2d...

Also it seems I can’t spell or type...apologies