Streamline your deck formwork with Ellis Horizontal Shores. Engineered for heavy loads yet light enough for easy handling, these adjustable beams reduce your total vertical shoring requirements. Featuring a rapid-adjust wedge lock that secures with a hammer strike, they provide dependable support for concrete decks, bridges, and box culverts. Choose from multiple versatile sizing options stretching from 4' to over 15' to match your exact structural needs.

Available in a wide range of adjustable sizes, from the compact HS-46 (4'–6') up to the heavy-duty HS-915 (102"–182") to perfectly fit any project span.

Specifications

Horizontal Shore quickly adjusts from 3'-7" to 6' (HS-46), 6' to 10' (HS-610), 8' to 13' (HS-813), 9' to 15' (HS-915) to support formwork for concrete decks, bridges, box culverts and heavy loads, but light enough for easy handling.

Horizontal Shores allow users to set up and tear down quickly by reducing the total number of shores needed. Quickly open and close wedge lock with strike of a hammer.

Ellis HS-610 Horizontal Shores supporting deck of box culvert.

Demonstration Video

Data Sheets

Span and Load Data

End Bearing Plate Detail

Spacing Chart for Ellis Horizontal Shores

Use the drawing and corresponding spacing charts below to determine the proper horizontal shore spacing for pouring concrete bridge decks.

Ellis Manufacturing Co. Horizontal Shore Spacing Chart

A - Safe Spacing for Horizontal Shores (Center to Center).

B - Safe Spacing for 2x4 Joists (Center to Center) & continuous over 3 or more supports. * Based on used of No. 2 Grade Southern Pine or Douglas Fir-Larch (S4S Lumber) Fb 1625. ** 3/4" Plywood Decking is continuous over 3 or more supports. Face Grain Parallel to Spacing (Strong Direction).

4-6 Horizontal Shore & Joist Spacing (Center To Center)
Slab	Slab Weight	Horizontal Shore Span			Joist
Thickness	Dead Load +	4'	5'	6'	Spacing
(inches)	Live Load (PSF)	A			B
4" or Less	80	60"	60"	60"	24"
5" to 6"	105	54"	54"	54"	22"
7" to 9"	142.5	48"	48"	42"	20"
10" to 12"	180	42"	42"	30"	19"
13" to 14"	205	36"	36"	30"	18"
15" to 16"	230	36"	36"	24"	17"
17" to 18"	255	36"	36"	24"	17"
19" to 20"	280	30"	30"	18"	17"
21" to 22"	305	30"	30"	18"	16"
23" to 24"	330	30"	24"	18"	16"

6-10 Horizontal Shore & Joist Spacing (Center To Center)
Slab	Slab Weight	Horizontal Shore Span					Joist
Thickness	Dead Load +	6'	7'	8'	9'	10'	Spacing
(inches)	Live Load (PSF)	A					B
4" or Less	80	60"	60"	60"	54"	36"	24"
5" to 6"	105	54"	54"	48"	36"	24"	22"
7" to 9"	142.5	48"	48"	36"	24"	18"	20"
10" to 12"	180	42"	42"	24"	24"	12"	19"
13" to 14"	205	36"	36"	24"	18"	12"	18"
15" to 16"	230	36"	36"	18"	18"	12"	17"
17" to 18"	255	36"	30"	18"	12"	12"	17"
19" to 20"	280	30"	24"	18"	12"	8"	17"
21" to 22"	305	30"	24"	12"	12"	8"	16"
23" to 24"	330	30"	24"	12"	12"	8"	16"

8-13 Horizontal Shore & Joist Spacing (Center To Center)
Slab	Slab Weight	Horizontal Shore Span						Joist
Thickness	Dead Load +	8'	9'	10'	11'	12'	13'	Spacing
(inches)	Live Load (PSF)	A						B
4" or Less	80	60"	60"	48"	42"	30"	24"	24"
5" to 6"	105	54"	48"	36"	30"	24"	18"	22"
7" to 9"	142.5	42"	36"	30"	18"	18"	12"	20"
10" to 12"	180	36"	30"	18"	18"	12"	8"	19"
13" to 14"	205	30"	24"	18"	12"	12"	8"	18"
15" to 16"	230	24"	18"	18"	12"	8"	8"	17"
17" to 18"	255	24"	18"	12"	12"	8"	6"	17"
19" to 20"	280	18"	18"	12"	12"	8"	6"	17"
21" to 22"	305	18"	12"	12"	8"	8"	6"	16"
23" to 24"	330	18	12"	12"	8"	6"	-	16"

Jacks and Shoring