DBP Forum

I would be interested on any views on the following handrail design rules. 1. BS6399:Part 1 states that the load should be considered to act at 1.1m above the floor regardless of the height of the handrail. This means that for a 3 tier system 1450mm above the floor the moment would be Force x (1.1m ...

I've got a heavily load trussed box structure (22m x 6m x 5m high) with most of the loads applied to beams supported by the bottom booms and I'm a bit puzzled about where to apply the NHL forces. The end diagonals go to the top of the end posts so most of the force is applied to the ends at high lev...

Two useful videos showing how to install TCB's

http://www.youtube.com/watch?v=lNgadYjTiWk

http://www.youtube.com/watch?v=oqk3dvq7i0c

Much quicker than conventional HSFG's but they are a bit more expensive!

Another Crane failure this time in New Zealand.

See the link below to watch the vid.

The Banksman does not know which way to run!

http://www.youtube.com/watch?v=xz71eVreMDc

Hi There There are a number of issues that you raise. 1. Any survey work (bore holes) are not notifiable. 2. All projects over 30 days or 500 man hours are notifiable. This is the project as a whole as opposed to the activities. Notification by the CDM co-ordinator not the subcontractor doing the wo...

Well it's happened again, twice in the last 2 weeks and the bath tin contents this time were below the recommended 0.1% so now I'm even more confused. Having spoken in length with some technical members of the Galvanizing Association there are 14 items which can increase the chances of LMAC ranging ...

Having encountered some problems with LAMC (Liquid Metal Assisted Cracking) during galvanizing steelwork recently we have been baffled by why, all of a sudden, this phenomenon has started to affect us following years of trouble free Galvanizing. After talking to several experts and reading reams and...

There has been another crane failure in Liverpool recently which caused a block of flats to be evacuated and may lead to possible demolition. Luckily there were no fatalities on this occasion but there have been plenty in the past. There does not seem to be a month go by when a crane incident does n...

I don't know how many designers are aware of this but there seems to be an increase in the number of suppliers quoting Working Load Limits for Bow Shackles and other lifting items instead of the usual Safe Working Load. Recently I specified 4T SWL bow shackles on a modular lift and received a compla...

Subject: When construction in China fails... At around 5:30am on June 27, an unoccupied building still under construction at Lianhuanan Road in the Minxing district of Shanghai city toppled over. One worker was killed. Scary as hell this, check it out! http://www.videosift.com/video/Construction-Fai...

HELP REQUIRED! I've been going slightly mad over the last few days reading through BS5950:Part 1, Part 5 and all the BS6399 codes trying to find an old clause I'm convinced existed at some point. I've completed an inspection of an existing building and there is no load path for the gable wind other...

Hi Andrew Thanks for the information and also your recent case study submission on Grey Water Recycling. We had our review meeting today and it got the thumbs up from all parties and subject to a few minor mods it should be on the site soon. Nice to hear from you again and thanks for all the origina...

With regard to columns falling over during erection - This is a problem which is often overlooked by designers and it applies to all types of bases recessed or flat. All column bases should be designed to be free standing during erection and if additional packs/wedges are required to make this possi...

This is a good point! I think this type of base tends to be used on a raft foundation as an alternative to having the base plate directly to the slab as it looks better when finished. The note about the washer plates refers to the bolt washer plates and presumably they are 20 think to resist uplift ...

Good Little Vid of Vandles (Future Engineers)

http://uk.youtube.com/watch?v=jQrb-8ovgYU