Can anyone share a typical concrete slab opening (elevated reinforced concrete) detail? I would appreciate it. I have a project where the contractor wants to leave an opening on concrete transfer slab for crane tower and infill later. Thanks in advance.
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I am working on a project that requires a design of mat foundation system. I intend to use #8 top and bottom bars and 48" thick mat. This is my first project that needs a mat foundation. I am looking for some typical mat foundation details (PDF details would do). Any help is appreciated.
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I am designing an elevated concrete slab for loading dock for multi-family building (USA). What is the live load requirement? Is there a section in IBC or ASCE7 that provides live load information for loading dock? I could not find it. Thank you in advance for your response.
Every Problem is an...
Besides the fire rated requirements, what are the difference in structural design for type III-A and type V-A wood framed buildings, if any? Even though code analysis is done by the Architect, I am wondering if there are any specific design requirements for type V-A vs. III-A.
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What is the difference between wood framed type 3A and type 5A buildings in terms of structural design? Where can I find structural design reference for type 5A buildings?
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I am designing precast piles and concrete slab on grade support system for a project in Maryland. Not being so familiar with deep foundation system, is there a bracing requirement for precast piles (braced laterally by the grade beam as the slab on grade will not be able to brace the pile caps)...
I need to design an auger CIP pile (12" diameter per geotechnical report), and I have never designed one before. Is there a design reference book/manual available - per ACI guidelines? How do I start?
In engineering, every problem is an opportunity!!!!
Is there a detail reference manual showing the typical details of RC structures? I know ACI has a detailing manual; however, it appears that it is intended for the detailers than the structural engineers. I know ACI-318 has few typical details as a part of manual for clarification, but not a...
Is there an equation in ASCE or IBC to calculate the fundamental natural frequency of the building to determine if the structure is rigid or flexible? Appreciate any help.
In engineering, every problem is an opportunity!!!!
I am designing a free standing one story commerical shade (flat roof and no walls): 30 PSF snow load, 20 PSF dead love and 90 MPH (exposure B) wind. Since there are no side walls (it is all open on sides), I assume there is no lateral load from wind, except there will be an uplift on roof. I...
I have an existing roof beam, and a new RTU is to be supported by this beam. I was told that an existing beam can be overstressed a maximum of 10% and still be within code allowance? Does anyone know about this? If so, where can I find this info in IBC 2006? Thanks in advance.
Per ACI 318-08 Table 4.3.1, for exposure class F1, F2 and F3, min. f'c is 4500 psi. Can exterior concrete wall footings (extended below the frost depth), interior concrete footings and slab on grade (not a parking garage) be classified as F0 and specify only a min. f'c 2500 psi? Would appreciate...
Is there any reference to indicate how much percentage lateral force does gravity load cause? For example, if there is a freestanding deck to be designed for gravity load, we also have to design it for lateral movement/ load caused by gravity load. How do we calculate the lateral load in this...
For concrete elevated slab above parking garage, what is the bottom concrete cover? Can I assume the concrete is not exposed to weather or in contact with ground? Thus, 3/4" cover.
I am designing a 1/2" thick x 3'-0" wide soda-lime-silica float glass to span over 4'-0" OC (3 span, typical). The manufacturer has provided me with typical design stress for 0.8% probability of breakage, typical mean modulus of rupture and other bunch of properties. However, there is no...
I am designing a freestanding steel handrail post (3'-6") spaced at 4'-0" on center maximumu. Per IBC, I am desiging this post for a point load of 200 lbs at the tip of free end. Per ASD design, can I use plastic section modulus (Z) in lieu of elastic section modulus (S)? The steel is 1" square...
