according to either would be amply strong.


TABLE FOR DIMENSIONING A HOWE TRUSS BRIDGE.
G.L. VOSE.

End Centre Centre
Span. Rise. Panel. Chords. Braces. Braces. End Rods. Rods.
50 10 7 2--8 x 10 7 x 7 5 x 5 1--1-1/8 2--1
75 12 9 2--8 x 10 8 x 8 5 x 5 2--1-1/2 2--1
100 15 11 2--8 x 10 8 x 9 6 x 6 2--1-3/4 2--1
150 20 13 4--8 x 12 10 x 10 6 x 7 3--2 3--1
200 25 15 4--8 x 16 12 x 12 7 x 7 5--2 5--1


TABLE FOR DIMENSIONING A HOWE TRUSS BRIDGE.
JNO. C. TRAUTWINE, C.E.

| | |An Upper | A Lower | An End |A Centre| | End | Centre
Clear| | No.| Chord. | Chord. | Brace. | Brace.|Counter.| Rod. | Rod.
Span |Rise| of |---------|---------|---------|--------|--------|-----------|-----------
in | in |Pan-| No| | No| | No.| | No| | No| | No.| | No.|
feet.|feet|els.|Pcs|Size.|Pcs|Size.|Pcs.|Size|Pcs|Size|Pcs|Size|Rods|Size. |Rods|Size.
-----|----|----|---|-----|---|-----|----|----|---|----|---|----|----|------|----|-----
25 | 6 | 8 | 3 | 4x5 | 3 | 4x10| 2 |4x6 | 2 |5x5 | 1 |4x5 | 2 |1-5/16| 2 | 7/8
50 | 9 | 9 | 3 | 6x7 | 3 | 6x10| 2 |6x7 | 2 |5x6 | 1 |5x6 | 2 |1-5/8 | 2 |1-1/16
75 | 12 | 10 | 3 | 6x9 | 3 | 6x11| 2 |6x8 | 2 |6x6 | 1 |6x6 | 2 |1-7/8 | 2 |1-3/16
100 | 15 | 11 | 3 | 6x10| 3 | 6x12| 2 |8x9 | 2 |6x8 | 1 |6x8 | 2 |2-3/16| 2 |1-5/16
125 | 18 | 12 | 4 | 6x10| 4 | 6x13| 2 |8x10| 2 |6x9 | 1 |6x9 | 2 |2-5/8 | 2 |1-3/8
150 | 21 | 13 | 4 | 8x10| 4 | 8x14| 3 |9x10| 3 |6x9 | 2 |6x9 | 3 |2-3/8 | 3 |1-3/16