Can someone explain to me what a Mild Reinforced Slab is? As apposed to just a Reinforced Slab. Why add "mild"? Where can I find the definition? ACI? Could not find the word mild in ACI 318-05.
Is the vertical dead load of metal wall panel supported by the girts or the foundation/slab/grade beam? We have 100 feet tall building and someone is telling me that the full weight of the wall panel is supported by the grade beam around the perimeter. Which means the wall panel has to support...
We are researching foundation design software and want to know any opinions you may have. We need the software to be able to handle mat foundations supported on piles and to be able to design round or obsucure shape mats. Also has to design by Canadian Code CSA A23.3-04.
We have looked at the...
What is the best detail for a hollow steel pipe tension pile imbedded in a pile cap. We were going to cap the top with a steel plate to keep concrete from going down the pile. Then either weld studs to the side of the pile, say 8 studs, two at each of the four quadrants. Or weld rebar to the...
Has anyone every seen or designed a house that has a half walkout basement with the non retaining portion of the basement being wood framed and the rest being CMU? So half the foundation is crawlspace and half is basement, all of CMU. Then you have the wall with the exterior door out of the...
We are designing foundations in Canada and the Geotech mentioned that 900 mm diameter steel pipe piles were being used on a nearby site. He could not give us the material spec that covered this size pipe pile. Does anyone know the specification that would cover piles this large?
We are looking for a great dynamic analysis program to design a turbine table top as well as ID fan foundations and various other dynamic foundations. Must also be able to design pile caps and miscellaneous foundations. Any recommendations.
Has anyone seen this type of construction. House in Florida, built in 1986, has 2x8 floor joists siting on slab on ground.
Any reason for this? Is this typical in this area? Does this type of framing have a name?
I have a 3 span continuous steel beam, uniform load on top flange. Contractor wants to remvoe the two interior beams. Beam has adequate strength without the two interior columns, but fails the deflection criteria. Does anyone know of any references or articles that discusses how to calculate...
Does anyone know where I can find information on glued sheathing shear walls. I have heard of someone designing a multi-story wood building without holdowns or straps, except at the foundation. The shear wall sheathing was glued to all members and the load path was detialed to be continuous at...
Can this be done? We need to add new concrete beam to a coal unloading station. The beam will span 14' and will connect to an existing concrete beam and an existing concrete wall. The existing beam is 4' wide x 6' deep and the wall is 4' thick. The existing beam has ties at 6" oc, top and...
The building construction (built in 1989) is 12 inch fluted CMU bearing walls with pilasters (24"x24") at 10 feet on center. Walls are 28'-0" tall and sit on a 6 feet tall concrete foundation wall. Building dimensions are 57'-4" x 46'-8" with a 1 inch control joint at midspan of the 57'-4"...
I have a 4000 sf office building with glulam columns forming an inner and an outer ring in the center of a square footprint. The rings are 7 feet apart. The exterior walls are wood stud framed. I have a few interior wood framed shear walls. At the request of the contractor and architect I am...
Does anyone have any experience with concrete floor hardener, metallic or non-metallic? Does it work? I am designing a slab for a dozer maintenance shop and there is going to be Cat D10's going across this slab with metal tracks. Should I use a hardener? Does it work? Is there something that...
Does anyone know where I can find span tables for 3 1/2" thick tongue and groove floor deck (plank). Maybe a website for a manufacturer. I have googled it and have not had any luck. This is a commercial application and trying to span 4 to 6 feet.
Has anyone ever replaced concrete with grout for an elevated slab? Contractor on my project did. Said his grout hog couldn't pump concrete..aggregate too big. The application is a stair landing in a stair tower. The design called for 5" thick concrete slab spanning 7.5'. 2" metal deck form...
Does anyone know if there is different criteria for contorl joint spacing for stack bond compared to running bond. NCMA recommends 25 feet max spacing but only shows running bond. I would assume it to be the same regardless, but another engineer that we are doing a peer review for says the max...
I have seen a note on drawings that requires bond beams to be placed above openings and where shown on plans and shall be placed no greater than 10'-0" OC vertically. Can anyone tell me where I can find anything that tells where bond beams should be placed, besides the top of the wall or when...
