Another time I have come across this issue was with out timber braced walls.
Say we had a 1m length of wall 2m high, it would give us 6kN braced capacity. This lead to a 12kN uplift requirement for the hold down bolts.
But in a typical residential house where the braced walls are used. There is...
Hi there,
So the reason I have this question is that we had to design a prop to support a tilt panel wall before it was tied into the steel portal structure.
we can size the prop and tie it into the tilt panel easy enough. We can analyse the shear for where the prop is tied into the existing...
Dik, we are in a "medium" seismic zone by New Zealand standards. Basically where the building is we take 1/6 of the weight of the building acting laterally in an EQ.
The building is founded on solid ground with effectively no chance of liquefaction.
Toby43, Presently the walls that will be...
Thank you for your quick response Dik.
if we grout the walls that will increase their stiffness but would the resultant loads into the frame still be the same?
it's the deflection of the portal that seems to give the unrealistic period.
we could put the portal legs in concrete to increase the...
Additional reasons for me asking this question.
If the period of the structure is indeed 1.3 seconds then can we reduce the design loads on the portal and subsequently reduce it's size?
I am unsure if other countries codes are like ours but structures with a period greater than 0.4s the demand...
Hi there,
We have a client wanting to seismically upgrade their unreinforced masonry building.
The building is a shop so has long shear walls on 3 of the sides and is open along the front.
We propose that we put in a large stiff portal frame along the front of the building to give it lateral...
