FAQ

Due to the bulky and heavy nature of the prefilled bagwork, together with the need to ensure the product stays dry during transit, deliveries are made via hauliers using curtain sided haulage vehicles. The most cost effective and typical way to deliver is by 24T articulated lorry, although there is the option to deliver smaller quantities with smaller curtain sided vehicles.

Should you have any preference, please state at the time of enquiry so that suitable haulage options can be investigated and priced.

Delivery may be made with or without a tail lift and it is important that consideration be made to your off-loading capabilities at the place where they are to be unloaded. Where tail lifts are not possible, deliveries will need to be offloaded with a fork lift or telehandler. Where tail lifts are available, offloading can be completed with the vehicles pallet truck, onto a suitable, level hard standing area. It is therefore important that consideration be made to the offloading capabilities on site, and whether it is safe or practical to do so.

Specialist Hiab vehicle deliveries are also possible.

Of course, though the customer should ensure that the delivery address is easily locatable and accessible for a third party haulier. The customer should also ensure that the site delivery address is capable and safe for accepting haulage vehicles. Generally, we recommend all orders are delivered to a fixed, manned, permanent delivery address, such as a depot, which are easier to locate and more suited to haulage vehicles and offloading.

The buyer accepts responsibility, costs and all risks relating to losses or delays arising from deliveries requested to temporary site addresses and associated unloading problems.

Small quantities are typically possible within 2-3 working days, otherwise please allow up to 7 working days for delivery. We recommend contacting our sales department as early as possible to ensure we can meet your timescale for delivery, and to reserve stock.

Typical delivery times for Prefilled Bagwork:\nEngland, Wales and Southern Scotland: 2-3 working days, or 3-5 working days on economy\nNorthern Scotland: 3-5 working days\nNorthern Ireland: 4-5 days\nEire: 4-5 days

Our structural mix is a 32N limestone:cement concrete mix and is suitable for all forms of structural bagwork including underpinning, scour protection, culvert headwalls and river walls. The high strength creates a long lasting, durable concrete block with a longer design life and works particularly well with steel reinforcement.

The specification for this dry mix is comparable to an ST4 (20N) or Postmix concrete (8-12N). The Contractor should satisfy himself/herself as the suitability of the grade of concrete supplied, for the application in hand.

This depends upon where the bagwork is to be placed. Consideration should be given to where the water can be introduced to harden the concrete, and the associated environmental risk in doing so.

Underwater Bagwork is suitable for placement in the watercourse, where the surrounding water becomes absorbed by the dry mix, to harden the concrete. When using Underwater Bagwork, steelwork is used to pierce the bagwork, allowing water to absorb into the bag and hence hydrate the dry mix concrete. For placement in water, the biodegradable liner is needed to ensure the placement is clean and environmentally acceptable, last long enough to keep placement clean but then safely biodegrades.

Above Water Bagwork can be used in both above water and away from water applications where the lack of surrounding water needs to be overcome in order to hydrate the dry mix concrete. This is achieved by the use of water soluble liners which quickly dissolve on the addition of water, allowing the dry mix to be hydrated by pre-soaking or hosing down in situ. Please see the individual product datasheets for further information.

Yes, we have standard design drawings for 1m, 2m, and 3m walls for both River and Non-River Applications, completed by a Consulting Engineer. In addition to standard design drawings, we also have the accompanying Risk Assessments, Design Calculations and Design Check Statements for each design.

Please contact us and we would be happy to provide more information and any technical input you may require.

A prefilled bag measures approximately 300mm x 540mm x 140mm in height. However, it is important to bear in mind that all soil filled bagwork will compress when loaded and ultimately soaked, in situ. Typically the length and width of the bags remains constant, but the height of each course will compress to typically 120mm (sometimes 105-115mm when the height of the wall exceeds 1.5m). A 1.5m high wall would typically settle into a 1.3m high wall, over the initial settling period, which would typically be several days/weeks, dependent upon rainfall, river levels etc.

The weight of each bag, as manufactured and supplied, is 20kg.

Volumetrically, each pallet contains up to 1.07m3 of newly placed MSE Bagwork. This is the nominal yield of the bagwork. Each pallet contains 50no. soil filled bags.

It is important however that you bear in mind the fact that the soil filled bagwork will compress over time and that the height of any wall formed will reduce over a short period of time as the bagwork is loaded and the soil becomes wet. As a guide, please work to the following reductions in height in your estimate of the quantity needed.

tHeight comparisons between freshly laid bagwork and compacted, saturated bagwork\nInitial height

(m)\t1.00\t1.50\t1.73\t2.00\t2.30\t2.50\t2.88\n

Eventual height (m)\t0.87\t1.30\t1.50\t1.73\t2.00\t2.17\t2.50\nBased upon a known length of the wall, the initial height of the formed wall and a designed width to the wall, the volume of bagwork needed (and hence the number of pallets) can then be calculated. For quantity calculations we recommend you assume an effective yield per pallet to be 0.8m3, per pallet.

Remember, for below water applications we also recommend forming the base of the bagwork wall with our Underwater Concrete Bagwork. This forms a more stable and scour resistant base to any wall and the special lined nature of the Underwater Bagwork means that placement is very clean and environmentally safe. Concrete bagwork will not compress like soil filled bagwork, and is not affected like soil by the fact that it is constantly submerged.

Note that unlike concrete filled bagwork, the heights of any wall or feature formed with soil filled bagwork are approximate only and will change during the initial days and weeks following placement.