Construction Technology and Environmental Services Flashcards
St Cecilia’s - What qualifications are required to replace the boiler.
Engineer should be gas safe and the requirements of approved document J - covers hearths, flues, air supplies etc. Boiler will be efficient. All new and modified wet system to have TRV fitted to every radiator except for the one where the room has a programmable thermostat. Notify the local authority and issue compliance cert.
Evelyn - Why was a specialist sub-contractor required for the hygienic wall boarding?
The product was subject to a supply and fit by the supplier to ensure quality control - Saniclad.
Evelyn - Were there any specific challenges or considerations you had to address in implementing Option 2?
Installation as per the manufactures instructions.
How it met the vinyl flooring.
Check if the base walls were suitable.
Fire ratings.
Evelyn - How was the wall board fixed?
Fixed directly to the painted brick walls with adhesive.
Evelyn - What was the wall boarding made of?
PVCu / 2.5mm.
Evelyn - Why was Option 1 more cost effective?
Material cost, but could be an argument for increased labour cost.
St Cecilia’s - Why was it necessary to commission the services of an asbestos consultant?
To comply with CAR2012 and the duty to manage asbestos.
St Cecilia’s - Why was the asbestos identified as high risk?
ACM classed as sprayed coating.
St Cecilia’s - What implications did this have for the project?
Greater degree of health and safety required. Asbestos consultant used to drill holes for pipework hangers.
St Cecilia’s - Why did both options require the involvement of a licensed contractor?
High risk ACM, to comply with the requirements of CAR2012 & HSE.
St Cecilia’s - What Is the difference between licensed and non-licensed?
The risk and the type of ACM.
St Cecilia’s - Were there any specific regulatory or safety considerations?
CAR2012, Gas Safe, Building Regulations AD J and Certification.
St Cecilia’s - How did your recommendations align with the overall goals and priorities of the project?
Due to existing services and disruption a managed approach was favoured. This reduced the programme and down time of the boiler for hot water and heating.
15 Magdala - What was the maximum U-Value needed?
AD L Section 4 - 0.15 W/m2K
15 Magdala - How did you check you complied with the maximum value?
u-value calculator and building control application.
15 Magdala - Did you carry out a condensation risk analysis?
Marley Roof complied with - BS 5250 examines the causes and effects of surface and interstitial condensation as well as other sources of moisture in buildings and how to manage risk through design, construction and operation. Cross ventilation to be provided by a
proprietary eaves ventilation strip
equivalent to a 25mm continuous
gap at eaves level with insect grill
and 50mm air gap between felt and
insulation. A continuous 5mm wide opening or the equivalent area is required to the length of the ridge.
15 Magdala - 270mm sounds very thick. Why?
As per requirements of AD L - Section 4 - 0.15 W/m2k 100mm Rockwool between ceiling joists and 170mm over.
15 Magdala - How did you Insulate the existing roof?
Full roof replacement, no existing roof.
Canning Street - Why couldn’t you obtain listed building consent for the flue?
Pre-planning advice stipulated flue was prohibited.
Canning Street - Why did you opt for an electrical heating system instead of alternative solutions?
Gas wasn’t suitable due to flue constraints. Oil boiler wasn’t an option.
Canning Street - How did achieving an EPC rating of D instead of E benefit the parties?
More energy efficient property for the incoming tenant and the landlord could legally let the property.
What is a u-value?
U-value is a measure of the rate of thermal transmittance through a structure or material, which shows how good a thermal insulator or conductor that material is.
U-values are measured in W/m2K and when it comes to insulation, low U-values indicate solutions which offer excellent thermal performance capable of reducing heat loss, improving energy efficiency and promoting indoor comfort.
- U-value is a measure of how much heat is lost through a given thickness of a particular material – the lower the value the better.
** W/m2K - watts per metre squared per degree kelvin (the kelvin is a unit of temperature).
What is the RIBA plan of work?
The RIBA Plan of Work organises the process of briefing, designing, constructing and operating building projects into eight stages and explains the stage outcomes, core tasks and information exchanges required at each stage.
Explain a timber frame construction?
The use of timber framing in new build construction is becoming increasingly popular for sustainability reasons. This can be either using large section columns and beams or panelised construction.
It offers a light weight rapid construction solution requiring less foundation strength than with traditional brick and block construction, although cladding is normally provided with an external brick leaf.
These units are prefabricated off-site ensuring consistently high quality production as opposed to on-site formation with the associated risks; eg; Health and safety, weather; unsupervised workmanship; etc.
