Live Load Library

AASHTO LFD

Table 2. Truck Load Data
Live Load ID/ Live Load Data		H15 (T)	H20 (T)	HS15 (T)	HS20 (T)	HS25 (T)	Military (T)
Truck Width (ft)		10	10	10	10	10	10
Wheel Spacing (ft)		6	6	6	6	6	6
First Axle Load (kips)		6	8	6	8	10	24
Spacing:	Min (ft)	14	14	14	14	14	4
	Max (ft)	14	14	14	14	14	4
	Increment (ft)	0	0	0	0	0	0
Second Axle Load (kips)		24	32	24	32	40	24
Spacing:	Min (ft)	N/A	N/A	14	14	14	N/A
	Max (ft)	N/A	N/A	30	30	30	N/A
	Increment (ft)	N/A	N/A	16	16	16	N/A
Third Axle Load (kips)		N/A	N/A	24	32	40	N/A

Note: Included in the truck live load library is the Cooper E-80 train load (AREA-E80).

Table 3. Lane Load Data
Live Load ID/ Live Load Data	H/HS15 Lane	H/HS20 Lane	H/HS25 Lane
Lane Load Intensity (klf)	0.48	0.64	0.80
Lane Load Width (ft)	10	10	10
Conc. Load for Moment (kips)	13.5	18	22.5
Conc. Load for Shear (kips)	19.5	26	32.5

Table 4. Truck Load Data
Live Load ID/ Live Load Data		Design Tandem	Design Truck	Double Tandem	Double Truck
Truck Width (ft)		10	10	10	10
Wheel Spacing (ft)		6	6	6	6
First Axle Load (kips)		25	8	25	8
Spacing:	Min (ft)	4	14	4	14
	Max (ft)	4	14	4	14
	Increment (ft)	0	0	0	0
Second Axle Load (kips)		25	32	25	32
Spacing:	Min (ft)	N/A	14	26	14
	Max (ft)	N/A	30	14	14
	Increment (ft)	N/A	16	4	40
Third Axle Load (kips)		N/A	32	25	32
Spacing:	Min (ft)	N/A	N/A	4	50
	Max (ft)	N/A	N/A	4	150
	Increment (ft)	N/A	N/A	0	14
Fourth Axle Load (kips)		N/A	N/A	25	8
Spacing:	Min (ft)	N/A	N/A	N/A	14
	Max (ft)	N/A	N/A	N/A	0
	Increment (ft)	N/A	N/A	N/A	32
Fifth Axle Load (kips)		N/A	N/A	N/A	14
Spacing:	Min (ft)	N/A	N/A	N/A	14
	Max (ft)	N/A	N/A	N/A	14
	Increment (ft)	N/A	N/A	N/A	0
Sixth Axle Load (kips)		N/A	N/A	N/A	32

Table 5. Lane Load Data
Live Load ID/ Live Load Data	Design Lane
Lane Load Intensity (klf)	0.6
Lane Load Width (ft)	10

Note: In addition to the live loads, there can be user-defined Permit Vehicles.