Report of proper curing temp & technique

[wagg]

Anyone have a good sample of a report for compliance with curing temperature and techniques? What pertinent information should be included on this? IBC Ch. 17 requires periodic inspection and verification, so I'd like to submit a report every week or so. Thanks for your help!

 

[civilperson]

Above freezing is required for the initial set and less than ten degrees per hour increase in temperature is recommended for externally heated concrete products, (with a maximum temperature of 160 degrees F). Maturity meter correlates temperature with 70 degree cure strength gain allowing early strength by application of higher temperatures.

 

[msucog]

you'd better read up on aci hot weather and cold weather curing too. i'd also urge caution in to wading off in to saying everything is okay. keep with the facts of what you observe during your visit. also, you'd probably better read up on many other things (aci, astm, ibc, etc) because if for instance moist curing is supposed to be done, are you going to note that the contractor isn't doing that? if you don't note it, then are you liable to some degree for not recognizing that? it's a silly argument but could hold water in a court of law. just a suggestion.

 

[boffintech]

Just personal preference but I don't like "check list" type reports, or reports that list off things done correctly, and I prefer passive voice. In my opinion reports should list items not meeting the various requirements in one of two categories: 1) resolved discrepancies and 2) unresolved discrepancies. Listed items should be followed by a reference.

If I wrote such a report it would read like the following:

At the request of the client, the project site was visited on the above-referenced date by the undersigned for the purpose of observing the placement of fresh concrete. The observation procedure employs visual observation techniques of the work to verify general compliance with the requirements of project plans and specifications.

Concrete Placement Location(s):

Resolved Discrepancies:

Unresolved Discrepancies:

With the exceptions listed above, fresh concrete for the referenced location(s) was observed to have been placed, consolidated, finished, and cured in general compliance with the requirements of project plans and specifications.

Unless noted otherwise, discrepancies listed above, and other minor discrepancies, if any, were discussed with and corrected by the contractor. Report delivered to: Name/Position/CompanyName.

 

[BigH]

Curing - especially in my Asian jobs - was/is always a problem. There is a tendency to "cure" by splashing on water a couple of times a day - of course, in the hot weather it evaporates within minutes . . . As noted by others, you should only state as to weather the condition of the concrete at the time of the visit was "cured" or not - i.e., was it wetted (burlap or whatever) -- and if the visit was within the specified time that curing is required (usually 7 to 10 days) unless with pozzolan cements or fly ash modified where up to 14 days may be specified. You cannot "guess" the times other than your visit. However, if you see signs of continuous curing (i.e., sprinklers, other measures) you might state that this is so - but again, you cannot say for sure that it was being done.