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I know that and I have the code.The question is if any ones knows where and if at all this issue is discussed in the code in chapter 16 (or anywhere else).

I was wondering if any one knows the requirement of design for existing buildings that would be adding new floors.My understanding is the IBC code requires buildings to be designed based on the most recent code if the added load on the existing building exceeds 10%. What does NYC building code...

Can some one tell me when it comes to wind pressure acting on cladding and components,(walls) do you add the windward and leeward pressures or each acts separately? Thanks

Has anyone taken the ICC Welding (S2) exam? If so any hints as to what study material is best to prep for the test, besides the standard welding codes? Thanks

Does any one know whether the NYC DOB requirement for special inspections (TR-1) requires PE license & ICC certification for welding and bolting is mandatory or still pending further clarification and new rules? PE's with over 10-15 years of relevant experience also require the ICC certification?

Can any one explain the purpose of the last inspection item on the form, referred to as "final, Directive 14". I have a case where I have been asked to provide special inspection for High strength bolt, welding and structural stability,for a small renovation job, however I have been additionally...

Yes. This is an addition for an existing 4 story building in NYC with adjacent similar 4-6 story buildings on either side.

can anyone tell me the extent of underpinning details that is required to be shown on the structural contract drawings in NYC for getting permits? Do the structural drawings need to show all the excavation bracing details under the existing underpinned elements, or can the specifics of the means...

When you say load duration assuming the load in question is wind ,how does the duration come in to play?

Are you implying that the 6000 psi/ 6 ksi value I have been considering is way too conservative versus your 13.5ksi? also is this value also applicable to laminated glass?

I am somewhat familiar with ASTM E1300. Do you know where it can be downloaded or viewed without having to purchase it? Thanks

I have a laminated glass panel wall that is spanning vertically 6 ft and fixed at the base. Typically I have seen modulus of rupture values of 24000 psi for glass panels (tempered/laminated).Also typically a factor of safety of 4 is used to obtain the allowable bending stress = 6000 psi.Does any...

Thanks guys appreciate your input.

I Know the nyc (new york city ) code specifies the 200 lb, concentrated and 50 lb uniform load, but can the determined stresses be reduced by 1/3 , similarly to wind and seismic forces? that is my question.

As it is known commonly when designing handrails as per the code one designs for a concentrated force of 200 lb, or uniform load of 50 lb/ ft.My question is does the nyc code allow for 1/3 stress reduction in this case? can the 200 lb load be considered temporary, to allow for the stress reduction?

Thanks for your detailed response. I checked the wind pressure using the gcpi= + -0.55 (partially enclosed structure), which gives the highest wind pressure.Additionally I suppose to be conservative I can add the positive and negative internal pressures. If the existing members work for this...

I understand that we cannot take any reductions, but it seems to me it is probably more realistic to analyze this as a other-structure system (as outlined in Fig. 6-20 ASCE-02 for solid free standing walls and signs).

I was wondering if some one can provide guidance form the following wind analysis condition: a metal screen that is supported by vertical and horizontal steel tubes is supported on top of a 18 story bldg.the screen has 3 sides and the fourth side is the side of the existing bldg.The screen is...

Thanks for the feedback guys, as suggested I am probably better off contacting the manufacturer, as this is not our typicall structural problem.

Take a look at the enclosed info, specifically the last article as it relates to the use of friction-grip bolts for this purpose.The info on the first page relates to the design of high strength friction-grip bolts, but I am not sure if it applies to structural...