Truss Tuesday: Floored

by | Apr 23, 2024 | Educational, Truss Tuesday

floor truss

This week’s truss:

Question:

While the TPI Technical Advisory Committee recommends that the minimum grade of visually stress-related lumber used for truss chords should be No. 2 grade, could you hypothetically use No. 3 for either one and still perform under capacity?

Top and Bottom Chords are Southern Pine No. 2
Webs are Southern Pine No. 3

Building Code: IBC 2021

Loads (psf unless otherwise noted):

TC Live Load 40
TC Dead Load 10
BC Live Load 0
BC Dead Load 5

The answer will be posted on Thursday!

This is not a production truss! This is simply an example for Truss Tuesday conversation. Join the conversation on LinkedIn.

Updated: April 25th, 2024

Answer: T1 can be replaced with No. 3, but replacing B1 with No. 3 would cause the truss to go over capacity.

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Truss Tuesday: Tower of Terror

by | Apr 9, 2024 | Truss Tuesday

Tower

This week’s truss: Tower of Terror

Question:

This truss has one chord member that needs to be upgraded to Number 1, but all the rest will work at Number 2. Which one do you think it is?

Chords are 2×4 Southern Pine #2
Webs are 2×4 Southern Pine #3
End Vertical is 2×8 Southern Pine #3

Building Code: FBC 2020

Loads (psf unless otherwise noted):

TC Live Load 20
TC Dead Load 10
BC Live Load 0
BC Dead Load 10

Wind: 130 mph

The answer will be posted on Thursday!

This is not a production truss! This is simply an example for Truss Tuesday conversation. Join the conversation on LinkedIn.

Updated: Thursday, April 11th

Answer: It’s B2! That span is long enough to cause significant bending in the bottom chord. The tower is well-supported by the thick end vertical and permanent bracing.

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Truss Tuesday: 2 x 4 or not 2 x 4…that is the question

by | Apr 2, 2024 | Truss Tuesday

Trey

This week’s truss:

Question:

This truss is over capacity. What are some ways to fix it?

Top Chords are Southern Pine No 2
Bottom Chords are Southern Pine No 1
Webs are Southern Pine No 3Building

Code: IBC 2021

Loads (psf unless otherwise noted):
TC Live Load 20
TC Dead Load 10
BC Live Load 0
BC Dead Load 10

Application: ResidentialWind: 130

The answer will be posted on Thursday!

This is not a production truss! This is simply an example for Truss Tuesday conversation. Join the conversation on LinkedIn.

Updated Thursday, April 04, 2024

The “simplest” way to get this truss under capacity is to upgrade T3 to a 2×6! How did you do it?

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Truss Tuesday: You Don’t Know Jack Vertical

by | Mar 26, 2024 | Truss Tuesday

Jack Truss

This week’s truss: Who is Jack Vertical?

Question:

Does this jack need a vertical or not? Assuming you want to keep the vertical but still save on material, how far from the end can it be?

 

Top and Bottom Chords are SP No 2

Wedge is SP No 2

Web is SP No 3

 

Building Code: IBC 2021

 

Loads (psf unless otherwise noted):

TC Live Load 20

TC Dead Load 20

BC Live Load 0

BC Dead Load 10

Application: Residential

 

Wind: 150MPH

 

Our answer will be posted on Thursday!

This is not a production truss! This is simply an example for Truss Tuesday conversation. Join the conversation on LinkedIn.

Updated Thursday, March 28th 2024

As it turns out, this Jack requires a vertical; however, it could be shifted left approximately 5′ to save on material.

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Truss Tuesday: Coffee Shop Conundrum

by | Mar 19, 2024 | Truss Tuesday

Vaulted Scissor Truss

This week’s truss: Vaulted Variance

Question:

Joe is opening his own coffee shop and he wants to have a vaulted space with nice light fixtures hanging from the ceiling. How would you upgrade this truss to given that information?

Top Chords are Number 2 Southern Pine
Bottom Chords are Select Structural
Webs are Number 3 Southern Pine

Building Code: IBC 2021

Loads (psf unless otherwise noted):
TC Live Load 20
TC Dead Load 10
BC Live Load 0
BC Dead Load 10

Application: Commercial
Wind: 110MPH

The truss has been designed for a 250LB moving load anywhere along the bottom chords.

The answer will be posted on Thursday!

This is not a production truss! This is simply an example for Truss Tuesday conversation. Join the conversation on LinkedIn.

Updated: Thursday, March 21st.

Answer:

You could do this in many ways, but one solution would be to upgrade the top chords to Number 1 Southern Pine and the Webs to Number 2 Southern Pine.

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