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Hi what is the rule of thumb when sizing a discharge plenum box (correct proportion of dimensions etc..)?

what electrical refference books on motor control would you advice for mechanical engineers?

Hello I am looking for a good reference book on the (motor) control and protection of mechanical equipment such as HVAC plants and pumps. Plse advice Where can I find useful info on the Net?

where can i find guidelines on the sizing of a smoke extraction system serving a supermarket?

thks gents I have electric under flor (tile) heating in mind

I am designing a under floor heating system for the first time Where Can I find design guides and info on this subject on the www?

where can i find cad drawings of butterfly valves (bothe flanged and wafer type)?

What is the criteria/ design guidelines to follow when a jockey pump for a faom fire system is to be sized?

where can I find suppliers / manufacturers of auotomated hangar doors?

what is the correct way to size the element rating according to the recovery rate?

what is the correct way to size the element rating according to the recovery rate?

what is the typical compressed air requirement for inflating Boeing 737 tyres ( CFM @ ...PSI)?

What fire protection sprinkler would you recommend for steel columns (460mm x 160mm I-profile)? The height of the columns is approximately 22meter. What is the required flow rate and pressure for such sprinkler(s)? We are planning to use a deluge water system on the columns. Where can I get...

What is the discharge (K) coefecient to be used on the typical fire sprinklers. The simulation will be carried out for metric units. rgds

Hello, Is it acceptable to fit a complete fire pump set (2 electric duty pumps, 1 diesel standby pump) discharging into a common discharge manifold with a single combined flow meter by-pass line and pressure relief line back to the storage tank all connected to the common manifold?

Hello I am busy with compressed air system for a scuba club to fill up the diving cylinders from a centre manifold connected to a compressor. What type of isolating valves is recommended on such systems? Who supply such valves? Where can I find design guideline on 300 bar compressed air systems?

what is a general guideline for the centre raduis of the bend, R=1.5D?

what is the guide line for the centre line raduis of a bend in a pump suction line?

what is the std pressure rating of plumbing fixtures & fittings (taps etc...)?

I am looking for automatic (mechanical activated or similar) fire seperation device (closing from the top) to seperate 2 aircraft hangars. The size is 5x5 m. Which companies may stock such products?