I am looking for information on manufacturers of borosilicate blocks commonly used for chimney liners. The only product I am aware of is Pennguard block manufactured by Hadek. It is an excellent productr, but some of our customers ask for alternate sources. If you are aware of other producers...
AASHTO Guide Spec for Design of Pedestrian Bridges
allows for live load reduction if deck influence area exceeding 400 psf. This reduction is allowed for design main structural members. The reduction formula is reasonably based on reduced probability of large influence areas being loaded to...
I am looking for references or examples of project application of long span wood/glulam trusses (US experience preferred). My current project involves roof trusses spanning nearly 100 ft over assembly hall. It probably can be done but I am personally not familiar with wood roof trusses exceeding...
1) How to account for reduced capacity of steel HP pile, which is inserted into prebored hole to minimize driving resistance?
Preboring or pre-drilling is used frequently on bridge projects to facilitate installation of steel piles in fills or hard clays. Piles are inserted in holes prebored to...
I am looking for recommended details of joints between individuals panels of concrete slurry walls. The project involves 150 ft deep, 60 ft diameter shaft. Concrete slurry wall is one of the contemplated options. However panel joint integrity and groundwater leakage into the shaft is a major...
I am looking for recommended details of joints between individuals panels of concrete slurry walls.
The project involves 150 ft deep, 60 ft diameter shaft. Concrete slurry wall is one of the contemplated options. However joint integrity and prevention of groundwater from leaking into the shaft...
I am looking for a good reference on design of heavy glulam trusses, with particular emphasis on connections design. The APA guides are OK for conventional trusses, but they seem to have limited resources for heavier, customized design. Any suggestions are welcome.
