Note Interpretation

A

Alwayslearningelec

Senior Member
Location
NJ
Occupation
Estimator
These are notes from mechanical drawing and VAV schedule. There is a motor rate toggle shown for each vav on the floor plans. Which trade do you think is responsible for the switch per note #4?

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If that is on the mechanical sheet, then item 4 is provided by the mechanical contractor. There should be something on the electrical sheets about wiring those disconnects
 
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What's the Project Manual say about interaction between Division 26 and Division 23?

Most of the jobs I've bid its very clearly spelled out, and usually we provide conduits, wiring, boxes, switches, etc., to the Division 23 equipment. Coordination between Division 26 and Division 23 is very important. In any event, I spell out what is included/not included in my bids to the GC. Then if they wish to shift something one way or the other, we can work with them on that.
 
Seven-Delta-FortyOne said:
What's the Project Manual say about interaction between Division 26 and Division 23?

Most of the jobs I've bid its very clearly spelled out, and usually we provide conduits, wiring, boxes, switches, etc., to the Division 23 equipment. Coordination between Division 26 and Division 23 is very important. In any event, I spell out what is included/not included in my bids to the GC. Then if they wish to shift something one way or the other, we can work with them on that.
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Yes I'm sure, usually is. Thanks
 
Adding to what is posted, if there is a switch or a disconnect shown on the electrical plans, I would do something more than ask us. Options:
  1. write an RFI.
  2. Include them in the price.
  3. Ask the GC's opinion and clarify on the bid
  4. include a line item in your proposal to add those disconnects.
  5. Include them in the proposal and include a line item to deduct them if not needed.
  6. Exclude them from your bid.
 
I have just added this to my template proposal letters. If it's loose I don't think per union rules the mechanical can install. If it integral then no install needed.

If there’s a note on the mechanical drawing equipment schedule that a loose disconnect switch is to be provided with equipment or by contractor, it is assumed to be supplied by mechanical contractor.
 
Alwayslearningelec said:
I have just added this to my template proposal letters. If it's loose I don't think per union rules the mechanical can install. If it integral then no install needed.

If there’s a note on the mechanical drawing equipment schedule that a loose disconnect switch is to be provided with equipment or by contractor, it is assumed to be supplied by mechanical contractor.
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That does not enter into it. If the mechanical is required to supply and install, they just have to contract an electrician to do the work.
 
Little Bill said:
What is the air valve for?
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It is a Variable Air Volume (unit) as Seve-Delta-Fortyone stated. They are often also equipped with supplemental heat. They are what the thermostats control when you have a large HVAC unit feeding multiple rooms. In the newer energy efficient systems. You have VFD's controlling the HVAC units, variable dampers controlling the air to individual spaces with everything "talking" to each other and the VFD will increase or decrease the air volume output depending on the demand from the various zones.
 
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