Description of Requirement_- Revised MAR2022_.pdf

Description of Requirement for

ECM Pre-Cast Oval Arch Segments Revised – 23 March 2022

REQUIREMENT: The Geotechnical and Structures Lab (GSL) has a need for the purchase of (1) concrete oval arch assembly with the option to purchase segments for an additional unit, according to the attached drawing details and specifications shown below:

a. Individual arch segments must be constructed according to the attached drawings (See details for Section Types 1, 2, & 3).

b. A minimum of 4000 PSI, not to exceed 7000 PSI, compressive strength concrete at 28 days per ASTM C39

c. Auger cast grout or aggregate mix sufficient to provide proper consolidation with required reinforcing covers must be used and mix design sent to USACE for approval prior to placement

d. All concrete shall conform to ASTM C94

e. Reinforcing bars shall be deformed type conforming to ASTM A615 Grade 60

f. Welded wire reinforcement shall conform to ASTM A185, minimum lap and embedment to be the greater of one cross section wire spacing plus 2” or 6”, whichever is greater

g. Concrete coverage of reinforcement shall be a minimum of 0.5”, not exceeding 0.75”

h. 7 and 28 day concrete compressive strength break data must be provided (3 breaks at each day using

4x8 cylinders). Three additional test cylinders must be cast and sent to ERDC for follow-on testing.

i. If cold joints are required, details shall be provided to technical POC

j. Section will be inspected upon delivery to ensure no structural cracking is present and overall dimensions are within a tolerance of +/- 0.5”. Thicknesses must be within +/- 0.375”.

k. Lifting eyes/supports must be included (not detailed). Plans must be submitted to technical POC prior to concrete placement. Adequate supports and shoring must be included during shipment to prevent cracking of concrete section(s). Adequate lifting points must be provided in each section to lift in their vertical orientation for final placement.

l. Offload rigging, including necessary slings and lifting hardware must be provided

PRICING: The contractor shall provide pricing for one complete unit (composed of 5 individual segments, Types 1, 2, & 3) as specified in the requirement with pricing for an additional unit as an option. Pricing must include shipping costs to delivery location.

DELIVERY Details: Concrete unit(s) must be delivered NLT June 10, 2022. A minimum notice of 14 days is required ahead of delivery. USACE will offload concrete sections on site. An on-site truck wait time of 2hrs must be allotted. Inspection will be made upon delivery to ensure dimensions are within tolerance and no structural cracking is present.

DELIVERY LOCATION: ETF Test Site (previously known as Range 16), Fort Polk Military Installation.

POC will be Joshua Payne, 601-634-2716, or William Griffiths (769-231-6957).

Isometric View

120.00

Male end View

Section Type 1 Joint must follow cross-section All units are in Inches

F

2.00 74.50

72.50

\Male End

J

Closed end - See Reinforcement Details

Side View

NAME DATE TITLE:

�---+----t--

DETAIL E

SCALE 1 : 10

2.00

DETAIL F

SCALE 1 : 10

1-- D R_A W_N--+_J. _R a_ll_l O_S -+--- Magazine_Modular Assembly _DRCHECKED

COMMENTS: REV

SCALE: 1:50 SHEET 2 OF 7

Magazine_Modular Assembly_DRW

SHEET 3 OF 7

DRAWN

SCALE: 1:50

REV

TITLE:NAME DATE

COMMENTS:

CHECKED

J.Ramos

Section Type 1 - Reinforcement Details

Note:

- 4x4 mesh can be overlapped to achieve a 2x2 spacing -Concrete coverage must be a minimum of 0.5" not to exceed 0.75"

- All units are inches

Full Assembly Side View - Type 1

Type 3 Type 2

I

Type1

J

7.

7.75

364.50

SCALE 1 : 10

DETAIL J

3x3 #3 Rebar

3x3 #4 Rebar

#3 12x6 Hooks @ 8" O.C#3 12x6 Hooks @ 8" O.C

3x3 #3 Rebar

SCALE 1 : 10

DETAIL I

#3 12x6 Hook around curvature#3 12x6 Hook around curvature @8" O.C

Joint Reinforcement Details Joint Reinforcement must follow cross-section *See sheet 7 for reinforcement details

DRAWN

SHEET 6 OF 7

Magazine_Modular Assembly_DRW

SCALE: 1:50

REV

TITLE:NAME DATE

COMMENTS:

CHECKED

J.Ramos

DETAIL G

SCALE 1 : 10

3x3 #3 Rebar 0.75

2.00

G

Type 2 Type 2

AB

DETAIL AB

SCALE 1 : 10

2x2w2.1w2.1*

.5

.5

2x2w5w5*

24.98

21.44

4.

.0

22.19

6.

1.

Note:

- 4x4 mesh can be overlapped to achieve a 2x2 spacing

- concrete coverage must be a minimum of 0.5" not to exceed 0.75"

- All units are inches

CHECKED

DRAWN

SHEET 7 OF 7

Magazine_Modular Assembly_DRW

SCALE: 1:20

REV

TITLE:NAME DATE

COMMENTS:

J.Ramos

2x2w2.1w2.1

Front View

2x2w2.1w2.1

2x2w4.5w4.52x2w4.5w4.5

3x3 #3 Rebar

3x3 #4 Rebar

2x2w2.1w2.1

2x2w5w5

Mesh must overlap min 6"

H

12.84 R16.59

R 116.05

2.

R38.99

R12.84

R44.91

.5

R124.03

56.25 3.75

21.75

9.00

9.00

3x3 #3 Rebar

#3 12x6 Hooks @ 15" O.C.

3x3 #3 Rebar

SCALE 1 : 10

DETAIL H

#3 12x6 Hooks @ 15" O.C.

.0

.5

3.75

21.75