It is my understanding that the concrete contractor will build from the rebar place (shop) drawings and not the structural drawings. We have a project where the rebar shops don't show a lot of information (like spread footing locations and wall elevations) and the rationale is that the...
Concrete was poured at a shear wall at about 110 minutes. According to ASTM C-94, "The discharge of the concrete shall be completed within 1 ½ hours after the introduction of the mixing water to the cement and aggregates, or the introduction of the cement to the aggregates." Any thoguhts on...
I am looking to learn how to use Revit Structure to draw details. I have been watching videos on Youtube, but many of them assume some knowledge of Revit. Do you know of good videos on line that explain the basics of using Revit particularly for drawing details?
Thanks
I am reviewing post-tensioned concrete slab and beam shop drawings and calculations. It is my first time. What advice do you have on things to look for?
This is for users of the CFS program by RGS Software for cold formed steel member design.
In the member check menu, the user is required to input the axial loads, moments and shears. Must the maximum shear and moment be used even if they do not occur at the same location?
Thanks.
I need the PDC Technical Report 10-02. It is my understanding that they updated it in April of this year, but now it is no accessable from the PDC web site.
Can anyone post a copy or email it to me?
I need to determine what screws should be used to connect a 5/16” plate to light gauge rafters and roof trusses. See the attached sketch. The wind uplift is around 80 pounds/foot. The 5/16” bent plate will support a gutter, which will weigh 16 pounds/foot if full of water. The building is in...
Please read the following from the 2009 IBC, Chapter 34, Section 3404. It appears to mean that if the P/Pall for a member in an altered structure cannot be more than 10% greater than P/Pall for the unaltered structure. But this doesn't make any sense to me.
Let say that for a given member in...
We are thinking of using helical anchors to hold down a temporary structure being installed on an existing parking structure. The uplift loads are 1,500 to 2,000 pounds. Chance anchors will work but the capacities are much large than I need. What anchors would you use in this applicacation?
Chapter 23 of the IBC provides diaphragm values for sheathing for Structural I grade and DOC PS1 and PS2 grades. Does CDX plywood meet the requirements of PS1 or PS2 .
The contractor poured a portion of a slab on ground 2-1/2" too low. He thought it was a depressed slab, but it is not. The existing slab is 6 inches thick with 4x4 W4.0xW4.0 WWF. The rooms are mostly for storage and will have vinyl composition tile.
The contractor’s solution is to apply a...
I need to install new stud walls on existing 1-1/2" type roof deck. How do I keep the deck from crushing? Is there a heavy duty foam than can get installed below the flutes?
How do you treat wind loads on an entry canopy? Do you view it as an overhang or as an open structure? In this particular case, the canopy protrudes about 10'-0" from the building and is about 40'-0" wide.
The spec in our office requires that the contractor keep the temperature of the concrete below 90 degrees F during placement. The building is seven story, post-tensioned concrete in central Florida.
ACI 305 limits the temperature to 95 degrees F. Can the concrete go as high as 100 degrees F...
Designing a buidling with a workout room on the second floor. What should I use for the live load? I assume there will be machines and free weights., but I do not have equipment information.
Thanks
