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good afternoon! Had a contractor who bored 3” hole in four 2x6 wall studs that are at 24” o/c. Pipe runs horizontally through the studs before turning vertical through top double plates. If I were to increase the section modulus of the studs by adding 3/8” OSB sheets on both faces of the wall...

1) ASME B31.1 Table 121.7.2(A) – Carrying Capacity of Threaded ASTM A36, A575, and A578 Hot Rolled Carbon Steel General Notes utilizes a minimum tensile stress of 50 ksi divided by a safety factor of 3.5, reduced by 25%, resulting in an allowable stress of 10.7 ksi. Question: What does...

1) ASME B31.1 Table 121.7.2(A) – Carrying Capacity of Threaded ASTM A36, A575, and A578 Hot Rolled Carbon Steel General Notes utilizes a minimum tensile stress of 50 ksi divided by a safety factor of 3.5, reduced by 25%, resulting in an allowable stress of 10.7 ksi. Question: What does...

1) ASME B31.1 Table 121.7.2(A) – Carrying Capacity of Threaded ASTM A36, A575, and A578 Hot Rolled Carbon Steel General Notes utilizes a minimum tensile stress of 50 ksi divided by a safety factor of 3.5, reduced by 25%, resulting in an allowable stress of 10.7 ksi. Question: What does...

Hi, How do you tell RISA 3D to brace the beam at 15 ft mark on a 30 ft long simply supported beam? Regards, Thanks, FEM4Structures

Hi, I am looking for a design resource book with some good examples on design of wall girts, sag rods and possible connections. AISC Design Guide 22 discusses the design in narrative, however looking for some good design examples. Thanks, Thanks, FEM4Structures

Hi, I am trying to design structural modification to a braced frame. Existing is a concentrically braced frame which needs to be modified to eccentrically braced frame. One brace connected to the spandrel beam will stay whereas the other will be moved half way up the column height. Imbalance of...

Hi, I am trying to introduce a column in a tightly space area of an existing floor. 14"x14" space such that walls on three sides and open access to the confined space from one side for the equipment. Loads are in range of 35 kips in tension due to a relocated cantilevered beam at Mezzanine...

Hi, I am trying to introduce a column in a tightly space area of an existing floor. 14"x14" space such that walls on three sides and open access to the confined space from one side for the equipment. Loads are in range of 35 kips in tension due to a relocated cantilevered beam at Mezzanine...

While determining the Rho= Rebar Area / b*d at any given section, do we include sum of both tensile and compressive steel areas to calculate Rho or the equation should only consider the reinforcement for either positive or negative moment while satisfying the section for Rho max and Rho min...

Looking for information on keyway resistance capacity in retaining walls to resist shear. 30 ft high RC R/W with berm height of 22’-0”. Anticipated shear load at footing is 25 kips. Contractor intend to use keyway at footing level. Trying to size the keyway which can resist the shear at joint...

Have a RISA-3D model / analysis of steel framed mezzanine. By going through the results, how can one tell the vertical braces (Cross type for instance) will be required between the columns? Thanks, FEM4Structures

Analyzing steel framing system in RISA 3D. You encounter a beam with “Max Deflection Ratio” greater than L/240 {for example Max Deflection Ratio is L/120} such that max deflection is at the end which frames into the girder. Load on beam is negligible. Is it correct to say that under this...

Trying to come with anchor Pull-Out Test Load embedded in concrete. Say the service live load is 1 kip. (Assume all Live) Is it correct to multiply 1 kip with (1.6/0.7) for a total Test Load of 2.43 kips. Such that FOS for LL= 1.6 and Phi =0.7 for concrete tension capacity equations per ACI...

How would one approach a small engineering consulting business if he don't want to invest too much. Strategies for attracting business? Thanks, FEM4Structures

I am dealing with small building remodel design. Basically adding an overhead door. Site area 20’x11’. Is anyone aware of such a code clause which may forego the need of special inspections for a small additions projects? Thanks, FEM4Structures

An old residential structure with failed basement wall (structural cracks all around). Any ideas on how to reinforce the retaining structure such as an L-shaped wall with Toe lying on top of basement slab? Sliding becomes an issue...any ideas...Much appreciated. Thanks, FEM4Structures

Adding an Over Head Door Assembly to a building. HSS columns on either side of the door. Looking for some guidance on how to calculate the shear load on the door and its transfer to adjacent columns and underlying foundation walls. Help appreciated. Thanks, FEM4Structures

Hi, Which ASTM Standard govern the testing of anchor rod in CIP comcrete? Loads are Tensile and Shear loads. Thanks

Hi, Anyone know when NCEES will be switching to newer codes (IBC 2012, ACI 318-11 and others) for SE Exam? Thanks