many solid wideslab manufacturers only require a 215 wall where slabs met.... only 100 block is required at external walls. This is simply a progress in the technology... some old school engineers may not be happy this "old dogs, new tricks etc" as they have to sign it off....
the issue here is whether the engineers requirement to have 215 on flat at external walls is worth:
1. the extra cost of blocks, mortar and labour
2. the loss of floor area
versus
the hassle and cost to pay off the first guy and hire someone else (assuming someone else will take this on.. perhaps you might not be able to find anyone??)
To give a valid opinion on this thread I would really think that the OP should elaborate further regarding the issues he/she is not happy with, & what his/her engineer has recommended.
Unfortunately....its still not very clear.....& to progress this thead further the following below shoud be answered:
Breakdown in relationship with engineer - I understand your issue here
Decisions made by your engineer - Clarification required
You not happy with your engineer- Clarification required
Then .....a more balanced answer to your query can follow
my statement was a generalisation... a generalisation which is correct for the vast majority of domestic situations in which wide slabs are used.
I completely agree with what you have stated, but i have to say in 10 years of first hand experience with domestic building i have never yet seen a situation where the depth, span or opes required the outer leaf to be 215 block in a house. I have seen it required where hollowcore slabs are used, but thats not what we're talking about.
To answer the questions above :
The engineer has said that he wants all load bearing walls to be block on flat not just where the slabs meet.
I talked to a few friends who have put in the precast floors and they said there engineers were happy to go with what the precast company recommended. My builder has also said that it is a waste of money to go with block on flat and he has put in numerous slabs.
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