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I'm trying to find information on how to design a concrete collar. This collar will be used to connect an existing concrete box culvert with approximate dimensions of 5'x5' to a new concrete pipe which will have an inside diameter of 48" and outside diameter of 4"-10". My design now calls for...

I'm trying to use Mathcad to set up a program for ACI-318 appendix D. Can you expand on your answer...possibly giving an example?

My current design requires using appendix D in the ACI 318 code. I'm having problems with the units in equation D-7 and concrete pryout strength for anchors in shear. Am I missing something in this equation?

I'm currently evaluating an existing roof structure for a building in Eau Claire, Wisconsin. I'm wondering what the snow loading on the buildings roof should be? The building in question was built in 1914.

I'm in the process of designing a elevated composite concrete and metal deck floor slab for a warehouse. This slab will have rolling fork lift loads. The floor has been designed with two mats of steel, 7 1/2" total concrete thickness and 50 ksi steel beams with a single row of shear studs on...

I'm currently working on an upgrade to an existing floor structure which has composite metal deck and steel beams with shear studs. The upgrade calls for the complete removal of the existing composite floor system down to the existing steel beams, and then replacing with a new composite floor...

Where is the best possible place to put a construction joint in a composite concrete and metal deck floor slab?

jike: It sounds like you have alot of experience with elevated slab design. Have you ever designed one using composite metal deck and concrete for the floor system?

I'm currently working on an existing composite concrete and metal deck floor structure which is supported by steel beams with headed studs welded to the beams top flange. My client wants to increase the loading capacity of the floor. In order to increase the capacity, my analysis program...

I'm planning on using a 3" x 18GA. metal deck with 8" total slab thickness for the slab. The slab has #5 bars spaced 12" O.C. top and bottom, and these bars run in the same direction as the metal deck. Also I have #4 bars spaced 12" O.C. for the transverse steel.

I'm only using the metal deck as a form. I contacted a metal deck supplier and they recommended using the SDI Composite Deck Design Handbook (1997). This manual has a forktruck loading example in it....that's what I've based my design on.

The floor is being used for storage and there will be fork truck loads on it.

I'm currently designing an elevated composite concrete slab with metal deck floor system. The composite slab is supported with composite steel beams and columns. The floor system is accessed using a ramp from an existing floor. I've been told that the proper impact factor for the overall...

I'm currently working on an existing composite concrete and metal deck floor structure which is supported by steel beams. My client wants to increase the loading capacity of this floor. In order to increase the loading capacity, our analysis program indicates that we will need to add...