FA568219RA19RA002_RFIs_Q_&_A_(4).pdf

QUESTIONS & ANSWERS (4)

Q: Part B – IIb – Structural Works

Item 3 – Concrete Slab

Please could you clarify where is detail (which drawing) of this work?

A: Wherever concrete slabs are shown in the project drawings.

Item 7 – Reinforced concrete walls

The description close with: thickness over 15 cm.-

The following item (n. 8) has the same title and the last description is thickness 15-30 cm.

What is the difference?

A: Typo error. Revised tech specs will correct it.

Q: Item 11 – Reinforced concrete slabs

A: Wherever a reinforced concrete slab It is shown on the drawings. Item gives the general description of the work to be done, it is not referred to a single detail. Anyway, consider Section F in Drawing S12 as an example of application of the Item.

Q: Item 13 and 14 - … steel bars …

Why existing two same items?

There are other difference?

A: Typo error. Revised tech specs will correct it.

Item 15 and 16 – Masonry reinforcement.

Could you confirm that the quantity of both items are the same?

A: Quantity estimation is Contractor responsibility.

Q: Item 18 R.C. beams reinforcement.

Could you confirm that this description is connected to details for beams T1.7 and T1.8?

A: This description refers to all the structural r.c. elements to be reinforced with FRP.

Q: Item 19 Clay R.C. slab reinforcement.

We ask the confirm that this item is for slab identified with numbers 6 – 7 – 8?

A: Slabs 6-7-8 are NOT fiber reinforced. This description refers to all the structural clay-r.c. elements to be reinforced with FRP.

Q: Where is the item / description for slabs repair with numbers 1 – 2 – 3 – 4 – 5?

A: Part IIb, Item 19.

We mean the work with carbon fiber.

Q: When it comes to the reinforcement of carbon fiber slabs we must raise the following questions to make a correct estimate:

1. Elastic modulus (and relative class) of the laminae (Carboplate) to be applied to the intrados of the joists of the masonry concrete slab

A: See Design Analysis to be posted in FBO

2. Explanations on the thickness of the sheets indicated in the tables since the sheets have a thickness of

1.4 mm or 1.2 mm, while in the drawing thicknesses of 2.5 and 3 mm are indicated: are there multiple layers stacked?

A: The thickness is composed with multiplies of the base thickness. The thickness in the drawings is the minimum required.

3. Weight and width (in the case of stirrups) of fabrics designed to reinforce the beams in c.a.

A: See Design Analysis See Design Analysis to be posted in FBO.

Item 20 – Structures anchoring

Following items 21 and 22 have a similar description.

A: Wherever there is a new structure connecting to an old one there is a structure anchoring.