Soil Foundary Spring Calculator

Mat Boundary Spring Generator

INPUT DATA & DESIGN SUMMARY
FOUNDATION LENGTH L =						ft
FOUNDATION WIDTH B =						ft
GRID TRIBUTARY AREA A =						ft²
MODULUS OF SUBGRADE K₁=						lb / in³
(Obtained from the soil report?? for 1' x 1' sf plate load test,
???? in the absence of a soil report obtain from table below )


	INSIDE SPRING VALUE					kips / joint
	EDGE SPRING VALUE					kips / joint
	CORNER SPRING VALUE					kips / joint



ANALYSIS


				( for B = L )
						=
				( for B < L )



					=		lb / in3??????	=




					=			lb / in3??????	=





			TYPICAL VALUES OF MODULUS OF SUBGRADE REACTIONS,???? K₁???? (lb / in³ )
										MOISTURE CONTENT
		TYPE OF MATERIAL			??1 to 4%		??5 to 8%		??9 to 12%	??13 to 16%	??17 to 20%	??21 to 24%	??25 to 28%	??> 28%

	Silts and clays (liquid limit >50)				-		175		150	125	100	75	50	25
	??(OH, CH, MH )

	Silts and clays (liquid limit <50)				-		200		175	150	125	100	75	50
	??(OL, CL, ML )

	Silty and clay sands				300		250		225	200	150	-	-	-
	??(SM & SH )

	Gravelly sands				Over 300????????????		300		250	-	-	-	-	-
	??(SW & SP )

	Silty and clayey gravels				Over 300????????????		Over 300???????? ??		300	-	-	-	-	-
	??(GM & GC )

	Gravel and sand				Over 300????????????		Over 300???????? ??		-	-	-	-	-	-