Hello,
I am designing a 34 feet simply supported floor steel beam with a uniform load and a number of point loads on it (including two 13 kips loads in the mid span areas). I know it will be the servicability criteria which would govern the design of this beam plus the fact that I have floor...
Hi Guys,
Currently I am designing a one way slab which has beams (T-beams).
We know that when the neutral axis is in the flange the beam acts like a regular (bf x d) rectangular beam (bf is the effective flange width). In this case if the calculated reinforcement ratio is less than RHOmin...
Hi,
We know that code gives a max deflection limit (for example L/240 for D+L) but I have had beams (specially longer spans)whaich had been designed based on L/240 but there was vibration there.
What would be your recomendation for limiting the deflection of floor beams (wood or steel) to...
Hi, i am designing a curved stair beam which is a semi-circle in plan but also raises up to the floor above. Therefore it makes an spiral. I tried to analyse the beam using computer software and I got my answers but:
1- I heard there is a method called v-load developed by AISC for analysing the...
Hi,
I have an existing warehouse building 62'x60' in floor plan. The structure at this moment is an "empty box" i.e. four walls with an old roof on it. The roof has four 60 feet long big trusses with arched top chord.
The Client wants to construct some offices inside. Along with this internal...
Hi
Considering the cost of the moment frames and cantilever columns, sometimes when the subject structure is not so big I try to utilize wood knee brace for lateral loads. For example right now I have a wood deck at second floor level added to an existing building. The deck is only 8.5'x16'...
I have eccentric load on a continuous basement footing along the property line. The basement wall is all the way towards the property line and sits on the edge of the footing. I know of a method where some engineers try to introduce a counteracting moment by engaging the slab on grade with the...
Hi,
I was always wondering if there is any code recomended allowable deflection for the shoring piles (mostly residential buildings).
I do have the "shoring and trenching manual" of Caltrans which recomends %0.2 of wall height. But this seems to be a very stringent requirement.
Does anybody...
Hi Everyone!
I have a house addition project under construction. The owner gave me a letter telling " The attic area is covered by plywood without engineer's approval". He plans to use the attic as an extra storage while I haven't design it for that load.
Now what should be my response, if he...
Hi everyone,
What is the best fitting equivalent rectangular section for a circular concrete beam?
I am designing a concrete pile which is loaded laterally. The pile has circular cross-section but I design it as a rectangular beam. I do have some hand-outs giving some equivalent rectangular...
Hi everyone,
I was wondering if there is any formal criteria for the allowable deflection of a temporary shoring soldier beam. This shoring is supposed to retain the face of excavated soil.
Thank you
