What is the correct placards for this scenario.

The shipper is supposed to provide placards, put all they give u on, check your bills, they will say what placards you need. but from what u describe you will need both.
Oh, if you are carrying hazmat you are required to carry all three handbooks in tractor when u have hasmat loads, use them to double check your placards.
b

 

You are required to use UN numbered 1263 placards.
You have more than 8,820 lbs of Class 3 UN1263.

See "Identification Number Display" (at bottom of page link, subsection #2).

DOT Chart 15

 

The OP said the 2000 lb remainder was 1 & 5 gal buckets, no polytotes in load.
The 2,205 lb benchmark limit for 172.504 deals only with the use of Dangerous placards, when 2 or more hazmat classes are loaded in the same shipment.
It has nothing to do with this scenario, as the OP listed only Class 3 UN1263 as his only hazmat.

 

I think we agree, however, that he needs to fly the UN 1263 and covers his whole load as he has more than 2,205 lbs of UN 1263 and entire load is 1263.

See also for flowchart: http://www.wsp.wa.gov/traveler/docs/cvd/hazmat_ placard_brochure.pdf

Clear explanation of Table 1 placarding vs Table 2 placarding: http://hazmatplacards.net/

 

You need the square ones.

 

Yes, but the part I disagree about is that the 2,205 lbs threshold is not applicable for this load. He has to use the UN 1263 placards because he is over the 8,820 lb threshold for placarding requirements of 49 CFR section 172.

**ALL of your listed references refer to application of Dangerous Placarding, which totally does NOT apply here. Dangerous placarding is ONLY applicable if 2 or more hazmat classes are loaded on the same shipment. The OP has only one hazmat class, all Class 3.

 

No, he has to fly the 1263 because he has over 2,205 of UN 1263.

"172.504 contains a number of notes and exceptions to these requirements. When two or more Table 2 materials are contained in the same transport vehicle, the "Dangerous" placard may be used instead of the specific placard required for each hazard class. However, when 1,000 kg (2,205 pounds) of a single category of HM is loaded on a transport vehicle, the placard specified for that material must be displayed."


That's all he needs. And if he had one (1) pound of a Table 1 item, he would need to fly a placard for that.

 

The reference statements are correct, but you are reading it wrong, Victor.
To simplify,
The 2,205 lb exception is ONLY used if the load contains 2 or more hazmat classes. If that were the case (2 or more hazmat classes on load), then if even ONE of the hazmat classes had 2,205 lbs or more, the driver would have to use a hazmat placard for THAT class, PLUS a placard for each of the other hazmat classes. This spec ONLY applies to the application of DANGEROUS placards, btw. And it does not have anything to do with UN numbered placards. The 2,205 lb threshold may be used for regular CLASS placards, not UN numbered ones.

Load Example:
2,500 lbs of Class 3 Flammable Liquid
200 lbs of Class 2.1 Flammable Gases
1,200 lbs of Class 8 Corrosives

You would need to have 3 placards on truck, (1 for each class). Regular placards, not UN numbered.

Now lets say you only have 1900 lbs of Class 3 with the other 2 hazmat classes, instead of the 2,500 lbs originally.
THEN you could use just 1 placard for the load... a Dangerous placard.

THIS is what the 2,205 threshold is for, and it still has nothing to do with the OP's load.
The key line you did not highlight is the line before the one you highlighted. Read it together with your highlighted line, for the true meaning. The "However" word in it is also a key word.

...and you cannot even carry 1 lb of a Table 1 (say explosives 1.1 or 1.2) with ANY load containing Class 3. At least not legally!

 

Dang you made me pull out the book!

page 345

Placard advisory on the chart is just a Flammable 3 placard for UN1263.

 

The chart is partial info, and non-inclusive of many of the "nitty gritty/down-n-dirty" hazmat regs.
See post #12 link. It specifies the 8,820 lb threshold for UN numbered requirements.