Value Engineering Session
Value Engineering Session
(OP)
I just had a value engineering session on one of my jobs and they came back with a few comments. See below: If anyone has some suggestions on how to respond, I would appreciate it.
1. Eliminate upturned keys in concrete starter walls.
2. Reduce wait time between adjacent concrete placements from 10 days to 3 days.
3. Use steel bar joists and metal decking in lieu of pre-cast concrete planks for roof construction.
4. Do not use hydrophylic expanding rubber waterstops.
5. Use fly ash in concrete.
1. Eliminate upturned keys in concrete starter walls.
2. Reduce wait time between adjacent concrete placements from 10 days to 3 days.
3. Use steel bar joists and metal decking in lieu of pre-cast concrete planks for roof construction.
4. Do not use hydrophylic expanding rubber waterstops.
5. Use fly ash in concrete.






RE: Value Engineering Session
2. can construction sequencing be changed to lessen the impact (i.e. do two sparate stages at once or start the upper shoring at an earlier stage).
3. Give them an alternate typical design so that they can price it up.
4. Not an option.
5. dont know the specifics so cannot comment.
RE: Value Engineering Session
2) We use three days sometimes, but the contractor needs to be pretty good.
3) It will save money now, but will cost money for future remodels.
4) Nope, no, nada, nein, no way.
5) Less than 20% is no problem. Anything more might increase cure times (see 2 above) or cause other issues.
RE: Value Engineering Session
RE: Value Engineering Session
RE: Value Engineering Session
2. Three days is likely OK. If not a strength (flexure and particularly shear).
3. Depends on the use and cost, but steel bar joists and deck is likely less costly, but, you may end up with with a lesser roof.
4. Hydrophillic rubber waterstops are OK; depends on how critical water penetration is; what is their alternative?
5. Fly ash is good and depends on the type of concrete. Not uncommon in these areas to use 25% fly ash with type 10 (GU) to provide equivalent of type 50 (HS) concrete.
Dik
RE: Value Engineering Session
2. Most concrete mixes will get strength in 3 days now, but tests should confirm that. Also recommend some way of alternating pours to maximize time between adjacent pours as strength is not the single factor in placing new concrete adjacent to existing. Just start playing with the extended reinforcing and see what happens.
3. Agree with Dik that overall durability and use should be factor what roof selection is.
4. Water stop depends on application.
5. Fly ash is not bad overall especially when dealing with mass pours. However, this issues goes back to item 2 wherein concrete strength is affected.
Regards,
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RE: Value Engineering Session
Dik
RE: Value Engineering Session
Dik