Standard wood form height

[ARLORD]

Do wood forms for concrete construction come in standarad lengths. I am designing a 30ft high concrete wall. I plan to step the width of the wall. I want to step the wall in height increments in multiples of a standard form length. I plan to use 8ft multiple increments.

 

[youngstructural]

No personal experience, as I rarely get involved with formwork design, However: I have a photocopied New Zealand standard of practice text that states:

"Sheets govern formwork sizes, with the exception of proprietary formwork systems in which case the manufacturer's material information sheets should be referenced" [Roughly paraphrased]

I would take it to mean that if you're making your own forms, or using reusable timber forms, you're dealing with 4' and 8' increments. Otherwise you've got to talk to the manufacturer.

I am looking forward to seeing more experienced replies!

Good luck,

YS

B.Eng (Carleton), P.Eng (Ontario), MIPENZ (Structural-New Zealand)
Working in Canada, and missing my adoptive New Zealand family... at least I brought the little Kiwi with me!

 

[MiketheEngineer]

On a wall this tall - you need to get with some shoring and forming guys. That is one big wall.

 

[msquared48]

In residential construction, you are mainly dealing with form heights of 2, and 4 feet, standard multiples of a 4X8 sheet of plywood. For the 30 foot high wall, I would still expect the contractor to place the 4X8 sheets flat with the 4 foot dimension vertical. Obviously, you will need a 2 foot panel at the top.

Mike McCann
MMC Engineering

 

[jberg]

I agree with Mike. Talk with the shoring and forming people and get their input. In a former life, I designed formwork and for timber forms for retaining walls, bridge abutments and the like, and we used 8' heights for timber forms, but quite often we used steel forms by EFCO. Either the "Plate Girder" or EFCO Lite is what I saw most often. It has been a few years, but I thought the standard EFCO was 10' tall, but I could be mistaken.

http://www.efcoforms.com/pages_products/products/large_panel.html

JWB