hokie66,
I wouldn't worry about .2% reo contribution to axial load but the capacity reduction factor for unreinforced masonry is only 0.45 which means the capacity of the wall (that's it, I'm stuck with a wall) is 40% less (.45/.75).
Some more: take a closer look at the formulae. Block...
Hi,
Re: Hollow core concrete masonry reinforced and core-filled
There is something in the following which I can not comprehend. Any thoughts?
AS 3700-2001 (Australia) 8.4 specifies: "The main reinforcement in the direction of the axial load shall:
a. be located symmetrically in the...
Hi,
Has anyone heard about Modified Rutledge Formula for designing pile depth in non cohesive soils?
D =[ 3.6V + sqrt(12.96 * V^2 + 16.2 * B * S * M )] / ( 2*B*S)
D = depth required
M = bending moment
V = shear force
S = ultimate bearing capacity of soil
B = width of footing (pile diameter)
If...
If the other project is different from the intended development, you may need at least a review of the old Geotechnical report.
One can not use a Geotechnical report done for a site and a proposed 2 storey building to design/build a 10 storey building on the same site.
How much is the cost of...
Hi,
Could you be more specific? Why do you have to underpin the building, what sort of access is inside and around the building (including height clearance inside), is there any other building nearby, what are the recommendation(s) from the Geotech people.
Thanks.
Hi,
I agree with csd72 about not going for demolition unless that is the only option.
You still have some options before asking the builder to demolish.
- Check the loads, they may be overestimated;
- Check with Geo people to see if you can get more than 1.5kg/cm2 for your loads (permanent +...
csd72,
shear studs are welded to beam, in order to achieve a composite beam section.
bondek + concrete is another composite section and there is no need for shear studs as bondek is shaped in such way that it locks in with the concrete and no sliding is permitted.
read again apsix's post, the...
Hi,
What do you call a "flexible diaphragm"?
You can achieve a diaphragm effect using diagonal bracing.
Have you tried to use a 3D analyse software?
Alternatively, you can design rigid connections between beams/columns along the facade (at top) and pin connection between columns/foundations (at...
Malkobani,
From what I know, ductility is a measure of the ability of an element/structure to yield before failure.
Even if the shear wall is over designed, the ductility may be similar: ratio of force/displacement_when_starts_yielding and force/displacement_when_fails.
If you design the...
