Al Rajhi Projects and Construction LLC s1

WORK PROCEDURE PROJECT: PROJECT NAME Ref No. FINI/01 PAGE 1 OF 3 SECTION: DATE OF ISSUE FINISHING Dec. 2012 SUBJECT: BY: QA/QC ENGINEER CONTROL OF BLOCKWORK APPROVED BY: QEHS MANAGER ACTION VERIFY

1. SCOPE

This procedure provides a method of control for construction of block masonry work in order to achieve compliance with the contract specifications and drawings.

2. PROCEDURE

.1 All precast concrete masonry blockwork will be carried out in accordance with the specification and Project Quality Plan.

In any circumstances where specifications are not provided or they Project Request For are in any way incomplete, the matter shall be referred back to Manager Information Consultant’s representative for additional information.

.2 Checks Prior to Start of blockwork:

i) Ensure that the area to receive the blockwork is as per the contract drawings and approved finishing schedule. FINI/01/A, ii) Check if preceding activities have been inspected and Project Source approved. Engineer docs, iii) Ensure that blocks are procured from approved manufacturer approvals (s). Except where otherwise approved in writing each material shall be obtained from a single source. iv) Source certificates shall be obtained for all raw materials e.g. sand, cement and blocks to show compliance with the contract specification.

.3 Handling and Storage of Materials:

i) Blocks shall be delivered to site palletised, off loaded as near to the point of use as practicable on a clean hard surface free Store- from contamination by mud or surface water. keeper ii) Cement shall be stored off the ground, kept dry and used in order of delivery. iii) Store metal ties and straps under cover and protect them from Store- damage and distortion. keeper Store- keeper WORK PROCEDURE PROJECT: PROJECT NAME Ref No. FINI/01 PAGE 2 OF 3 SECTION: DATE OF ISSUE FINISHING Dec. 2012 SUBJECT: BY: QA/QC ENGINEER CONTROL OF BLOCKWORK APPROVED BY: QEHS MANAGER ACTION VERIFY

.4 Preparation of Work, Materials and Components:

i) When the materials and components are distributed to the Site work area, ensure that the structure is not overloaded. Engineer ii) Plan for scaffolding material required for block work at heights. Plan for additional manpower for lifting blocks at Site heights. Engineer iii) Set out anticipating the position of openings etc. in the work above to avoid unnecessary cutting and adjustment of Gen. masonry units leading to incorrect or uneven bonding. Foreman

.5 Preparation of Mortar Mixes:

i) Mortar shall be mixed by machine except for small quantities only (not containing plasticiser). Hand mixing (if permitted) may be done on a watertight platform. Gen. ii) When mixed at site, batch boxes shall be used to ensure Foreman correct and consistent mix proportions. Gen. iii) Use mortars (other than retarded mortars) within 2 hours of Foreman mixing or as specified. Gen. Foreman .6 Building Blocks Walls:

i) Build block work within permissible deviations as specified. ii) Unless otherwise specified/permitted, lay blocks on a full bed of mortar and fill all joints. Keep courses levelled and perpend vertically aligned. Plumb quoins and all faces as the Site Engr work proceeds. It is preferable to Align vertically every fifth or sixth perpend and `even out’ the size of Intermediate Gen. joints. Try to keep horizontal joints of uniform thickness. Foreman FINI/01/A iii) Do not carry one course more than the height specified in the contract specifications. Gen. iv) Rake out joints as work proceeds, on all faces to be plastered Foreman or rendered. This will provide a good key for the coating. v) If pointing is specified, the mortar used for the pointing Gen. should not be stronger than that used when constructing the Foreman wall unless specified otherwise. Gen. Foreman

WORK PROCEDURE PROJECT: PROJECT NAME Ref No. FINI/01 PAGE 3 OF 3 SECTION: DATE OF ISSUE FINISHING Dec. 2012 SUBJECT: BY: QA/QC ENGINEER CONTROL OF BLOCKWORK APPROVED BY: QEHS MANAGER ACTION VERIFY

vi) All blockwork shall be bonded to adjacent reinforced Gen. concrete structures by means of galvanised mild steel cramps Foreman at specified spacing unless specified otherwise. vii) Partitions shall be bonded to main walls by toothing as Gen. specified in the contract. Foreman

.7 Chases and Holes:

Cut chases and holes neatly and without damaging the walls as per Gen. the following unless specified otherwise: Foreman

i) Chases in blockwork to be less than 75mm. ii) For hollow units maintain a minimum of 15mm thickness between bottom of chase and void. iii) Do not cut horizontal or raking chases to a depth exceeding one-third the thickness of the single leaf in walls or leaves contracted of solid units. iv) Holes shall not exceed 300mm x 300mm unless specified otherwise. v) Do not cut chases back-to-back exceeding the dimensional restrictions in (i),(ii) and (iii). Offset such chases in line by a distance at least equal to the wall thickness. vi) It is preferable to use mechanical rotary cutters, particularly when it is necessary to avoid heavy impact and vibration. The number and position of chases shall be strictly in accordance with the specification since unauthorised chasing might adversely affect one or more of the functional requirements of the walls e.g. its loadbearing capacity.

.8 Appendix FINI/01/B shall be used to record deliveries of blocks if required by the specification. Site Blocks Site Engineer Register PROJECT: PROJECT NAME SITE NO.:

CHECK SHEET FOR CONTROL OF BLOCKWORK Sheet No.

SUBCONTRACTOR: CLIENT

SECTION OF WORK ______LOCATION ______

Checked STAGE ITEM by DATE PRIOR TO BLOCK- WORK 1. Setting out (openings etc.) SE/SU 2. Check source certificates of blocks, sand and cement. PE

3. Check mix proportion of mortar. GF CHECKS DURING BLOCKWORK 4. Check alignment/width of perpends. GF

5. Check line and level of courses. GF

6. Check metal ties. GF

7. Check raked out joints. GF 8. Check toothing at joint of main wall with partitions. GF

9. Check compliance of chases with specifications. GF

APPROVAL TO PROCEED WITH THE NEXT TRADE QA/QC QA/QC – Quality Assurance/Quality Control, PE – Project Engineer, SE – Site Engineer, SU – Surveyor, GF – General Foreman SITE REGISTER (BLOCK)

PROJECT NAME: ______BUILDING PERMIT NO. ______

AREA: ______PLOT NO.: ______BLOCK REQUIRED: ______SIZE: ______CONTRACTOR: ______CONSULTANT: ______

DATE OF INVOICE CONSULTANT'S INSPECTOR'S NO. LOT SIZE FACTORY NAME LOT NO. C.O.C. NO. REMARKS PRODUCTION NO. SIGNATURE SIGNATURE