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Hi I am looking for an appropriate materials to use for extruding into a "splice" shape that binds two aluminium profiles together. The only snag is the splice needs to be as fire resistant as possible. The design is similar to a thermal break splice used in external glazing frames...

thanks for all your responses. I will try to fid out the "Ballast" rating of the lighting, but I am not too sure of the switch manfrs give this figure or not. It does seem odd to me that the lighting unit mnfrs and the available switches seem to use different rating methods. I guess frm the...

Hi Dave. Thanks for your prompt response !! As you probably have gathered I am not an electrician, but have been asked to design a door post (next to glazing)to accomodate a "slim" light switch. The normal Architrave switches (such as the MK Gridswitch) is just are too large and cumbersome. We...

We are trying to determine the current rating for a switch to operate a bank of flourescent lights. Is there a simple formulae to calculate the operating and inrush current rating for the switch.

I am using a product called AnalysisGroup to determine deflection in a glass plate. The plate is one of a number of fully framed panels of glass held in an aluminium frame. This reults in the top and base having fixed edge supports and the two vertical edge supports being "spring" type supports...

Many thanks to Tinfoil - for the idea UKPete - for how to do it SRIED - for the usefull link. Logikman

Reposted to show correct image file address. I am trying to find out how to calulate the torque of minature stepper motor to operate louvered blinds (venetian blinds). The attached GIF shows the principle. Basically a rod has 3 control threads attached by winding the threads about 3 truns...

I am trying to find out how to calulate the torque of minature stepper motor to operate louvered blinds (venetian blinds). The attached jpg shows the principle. Basically a rod has 3 control threads attached by winding the threads about 3 truns around the spindle. The ends of the threads are...

At I last I found the PLATE analysis progamme I was looking for: It called Analysis Group and is available as a trial download at www.iesweb.com. The only problem that it does not seem to handle is lin-loads" but most other loading conditions are covered.

Following a major crash I lost the site information for this forum. I now have found it and can post a response to the earlier suggestions. re: RG88's thoughts - the glass is always either toughended or laminated so it tend to act very much like a sheet of metal.Indeed it can be defelcted quite...

Sometime ago I found some software that checked deflection and bending stress in rectangular plates. Cannot find it now and so need to know if there is still such an animal out there ? Requirmeents are for either 4 or 2 edge support, UDL, concentrated AND "line load" to calculate max...