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Ok, calculators out! Contrary to what I believe, apparently, a solid grouted masonry wall buckle at a lower load than one with grout at 16" on center. ACI 530, Equation 2.2.3-d with the following values: 8" wall h= 12' e= 2" E= 1125000 Wall Properties 8" on center 16" on center r= 2.2...

Can anyone explain to me how a allowable shear and moment diagram will look like for a steel beam that is partially reinforced with a C on top? The Lb is the length of the beam, the beam in reinforced in the middle third. Will the moment capacity of the unreinforced section be based on the...

New pre-engineered metal building with no slab, 100' clear span. The contractor wants tie beams, not large footings. I'm thinking that dead-men along the tie beams will put the thrust back into the ground. Any other ideas????

A contractor has left out a hairpin for a PEMB. I designed a grade beam to take the horizontal reaction. Seeing the size of the grade beam, he would like us to design a thrust block. As it will be near the ground surface, is this even feasible? If there is a 2500 psf bearing pressure and...

We have an existing catwalk that we are adding load to. The bar grating on top can be removed, so I don't consider that for lateral bracing of the beam. The beams are 20' long, about 3' apart, shear connected at the ends. There are beams connecting these two beams at third points. Do these...

For a building addition with hollowcore prestress planks it is logical to have 3 shear walls with a U shape. Due to the size of the building, and interior layout, there will be several spans of planks, changing direction, different lengths, etc., and I'm using masonry for interior bearing walls...

For the design of heliports and helistops the IBC states the following: Landing areas shall be designed for the following loads: 1) DL plus the gross helicopter weight, plus snow load. 2) DL plus two live loads equal to 75% of the toatal helicopter weight spaced 8' apart. (this represents the...

ASCE 7-02 gives the library live load as 150 psf for stack rooms. Section 9.5.3, definition of W, the effective weight of the structure including the total dead load and other loads listed below: In storage areas, a min of 25% of the floor live load. Actual partition weight or 10 psf...

Our architect has provided me a wood truss, wood stud Church. There are are dormers with windows that start below truss bearing, continuing above truss bearing, cutting the traditional double top plate collector/chord (depending on the load direction) that typically runs the length of the...

Can anyone help me find information regarding how much load from library stacks should be included in seismic design?

Can anyone help me with designation of an existing bar joist. 16" deep, 1.5" x 3/16" angle flanges, 5/8" bars?

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